2012-06-26 18:27:50 +02:00
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/* Straight-line strength reduction.
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2013-01-10 21:38:27 +01:00
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Copyright (C) 2012-2013 Free Software Foundation, Inc.
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2012-06-26 18:27:50 +02:00
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Contributed by Bill Schmidt, IBM <wschmidt@linux.ibm.com>
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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/* There are many algorithms for performing strength reduction on
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loops. This is not one of them. IVOPTS handles strength reduction
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of induction variables just fine. This pass is intended to pick
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up the crumbs it leaves behind, by considering opportunities for
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strength reduction along dominator paths.
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2013-05-03 20:56:39 +02:00
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Strength reduction addresses explicit multiplies, and certain
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multiplies implicit in addressing expressions. It would also be
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possible to apply strength reduction to divisions and modulos,
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but such opportunities are relatively uncommon.
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2012-06-26 18:27:50 +02:00
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Strength reduction is also currently restricted to integer operations.
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If desired, it could be extended to floating-point operations under
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control of something like -funsafe-math-optimizations. */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "tree.h"
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#include "gimple.h"
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#include "basic-block.h"
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#include "tree-pass.h"
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#include "cfgloop.h"
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#include "gimple-pretty-print.h"
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#include "tree-flow.h"
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#include "domwalk.h"
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#include "pointer-set.h"
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2012-07-26 15:10:04 +02:00
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#include "expmed.h"
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2012-09-11 14:23:25 +02:00
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#include "params.h"
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2013-04-26 02:28:35 +02:00
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#include "hash-table.h"
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2012-06-26 18:27:50 +02:00
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/* Information about a strength reduction candidate. Each statement
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in the candidate table represents an expression of one of the
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following forms (the special case of CAND_REF will be described
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later):
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(CAND_MULT) S1: X = (B + i) * S
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(CAND_ADD) S1: X = B + (i * S)
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Here X and B are SSA names, i is an integer constant, and S is
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either an SSA name or a constant. We call B the "base," i the
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"index", and S the "stride."
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Any statement S0 that dominates S1 and is of the form:
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(CAND_MULT) S0: Y = (B + i') * S
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(CAND_ADD) S0: Y = B + (i' * S)
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is called a "basis" for S1. In both cases, S1 may be replaced by
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S1': X = Y + (i - i') * S,
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where (i - i') * S is folded to the extent possible.
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All gimple statements are visited in dominator order, and each
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statement that may contribute to one of the forms of S1 above is
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given at least one entry in the candidate table. Such statements
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include addition, pointer addition, subtraction, multiplication,
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negation, copies, and nontrivial type casts. If a statement may
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represent more than one expression of the forms of S1 above,
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multiple "interpretations" are stored in the table and chained
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together. Examples:
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* An add of two SSA names may treat either operand as the base.
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* A multiply of two SSA names, likewise.
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* A copy or cast may be thought of as either a CAND_MULT with
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i = 0 and S = 1, or as a CAND_ADD with i = 0 or S = 0.
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Candidate records are allocated from an obstack. They are addressed
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both from a hash table keyed on S1, and from a vector of candidate
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pointers arranged in predominator order.
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Opportunity note
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----------------
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Currently we don't recognize:
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S0: Y = (S * i') - B
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S1: X = (S * i) - B
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as a strength reduction opportunity, even though this S1 would
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also be replaceable by the S1' above. This can be added if it
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2012-08-01 15:02:38 +02:00
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comes up in practice.
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Strength reduction in addressing
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--------------------------------
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There is another kind of candidate known as CAND_REF. A CAND_REF
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describes a statement containing a memory reference having
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complex addressing that might benefit from strength reduction.
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Specifically, we are interested in references for which
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get_inner_reference returns a base address, offset, and bitpos as
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follows:
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base: MEM_REF (T1, C1)
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offset: MULT_EXPR (PLUS_EXPR (T2, C2), C3)
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bitpos: C4 * BITS_PER_UNIT
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Here T1 and T2 are arbitrary trees, and C1, C2, C3, C4 are
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arbitrary integer constants. Note that C2 may be zero, in which
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case the offset will be MULT_EXPR (T2, C3).
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When this pattern is recognized, the original memory reference
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can be replaced with:
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MEM_REF (POINTER_PLUS_EXPR (T1, MULT_EXPR (T2, C3)),
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C1 + (C2 * C3) + C4)
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which distributes the multiply to allow constant folding. When
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two or more addressing expressions can be represented by MEM_REFs
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of this form, differing only in the constants C1, C2, and C4,
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making this substitution produces more efficient addressing during
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the RTL phases. When there are not at least two expressions with
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the same values of T1, T2, and C3, there is nothing to be gained
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by the replacement.
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Strength reduction of CAND_REFs uses the same infrastructure as
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that used by CAND_MULTs and CAND_ADDs. We record T1 in the base (B)
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field, MULT_EXPR (T2, C3) in the stride (S) field, and
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C1 + (C2 * C3) + C4 in the index (i) field. A basis for a CAND_REF
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is thus another CAND_REF with the same B and S values. When at
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least two CAND_REFs are chained together using the basis relation,
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each of them is replaced as above, resulting in improved code
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2013-05-03 20:56:39 +02:00
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generation for addressing.
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Conditional candidates
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======================
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Conditional candidates are best illustrated with an example.
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Consider the code sequence:
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(1) x_0 = ...;
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(2) a_0 = x_0 * 5; MULT (B: x_0; i: 0; S: 5)
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if (...)
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(3) x_1 = x_0 + 1; ADD (B: x_0, i: 1; S: 1)
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(4) x_2 = PHI <x_0, x_1>; PHI (B: x_0, i: 0, S: 1)
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(5) x_3 = x_2 + 1; ADD (B: x_2, i: 1, S: 1)
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(6) a_1 = x_3 * 5; MULT (B: x_2, i: 1; S: 5)
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Here strength reduction is complicated by the uncertain value of x_2.
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A legitimate transformation is:
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(1) x_0 = ...;
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(2) a_0 = x_0 * 5;
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if (...)
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{
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(3) [x_1 = x_0 + 1;]
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(3a) t_1 = a_0 + 5;
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}
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(4) [x_2 = PHI <x_0, x_1>;]
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(4a) t_2 = PHI <a_0, t_1>;
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(5) [x_3 = x_2 + 1;]
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(6r) a_1 = t_2 + 5;
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where the bracketed instructions may go dead.
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To recognize this opportunity, we have to observe that statement (6)
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has a "hidden basis" (2). The hidden basis is unlike a normal basis
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in that the statement and the hidden basis have different base SSA
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names (x_2 and x_0, respectively). The relationship is established
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when a statement's base name (x_2) is defined by a phi statement (4),
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each argument of which (x_0, x_1) has an identical "derived base name."
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If the argument is defined by a candidate (as x_1 is by (3)) that is a
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CAND_ADD having a stride of 1, the derived base name of the argument is
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the base name of the candidate (x_0). Otherwise, the argument itself
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is its derived base name (as is the case with argument x_0).
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The hidden basis for statement (6) is the nearest dominating candidate
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whose base name is the derived base name (x_0) of the feeding phi (4),
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and whose stride is identical to that of the statement. We can then
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create the new "phi basis" (4a) and feeding adds along incoming arcs (3a),
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allowing the final replacement of (6) by the strength-reduced (6r).
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To facilitate this, a new kind of candidate (CAND_PHI) is introduced.
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A CAND_PHI is not a candidate for replacement, but is maintained in the
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candidate table to ease discovery of hidden bases. Any phi statement
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whose arguments share a common derived base name is entered into the
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table with the derived base name, an (arbitrary) index of zero, and a
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stride of 1. A statement with a hidden basis can then be detected by
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simply looking up its feeding phi definition in the candidate table,
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extracting the derived base name, and searching for a basis in the
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usual manner after substituting the derived base name.
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Note that the transformation is only valid when the original phi and
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the statements that define the phi's arguments are all at the same
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position in the loop hierarchy. */
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2012-06-26 18:27:50 +02:00
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/* Index into the candidate vector, offset by 1. VECs are zero-based,
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while cand_idx's are one-based, with zero indicating null. */
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typedef unsigned cand_idx;
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/* The kind of candidate. */
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enum cand_kind
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{
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CAND_MULT,
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2012-08-01 15:02:38 +02:00
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CAND_ADD,
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CAND_REF,
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CAND_PHI
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2012-06-26 18:27:50 +02:00
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};
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struct slsr_cand_d
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{
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/* The candidate statement S1. */
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gimple cand_stmt;
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2012-08-01 16:00:35 +02:00
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/* The base expression B: often an SSA name, but not always. */
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tree base_expr;
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2012-06-26 18:27:50 +02:00
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/* The stride S. */
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tree stride;
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/* The index constant i. */
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double_int index;
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2012-08-01 16:00:35 +02:00
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/* The type of the candidate. This is normally the type of base_expr,
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but casts may have occurred when combining feeding instructions.
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A candidate can only be a basis for candidates of the same final type.
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(For CAND_REFs, this is the type to be used for operand 1 of the
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replacement MEM_REF.) */
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2012-06-26 18:27:50 +02:00
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tree cand_type;
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/* The kind of candidate (CAND_MULT, etc.). */
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enum cand_kind kind;
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/* Index of this candidate in the candidate vector. */
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cand_idx cand_num;
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/* Index of the next candidate record for the same statement.
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A statement may be useful in more than one way (e.g., due to
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commutativity). So we can have multiple "interpretations"
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of a statement. */
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cand_idx next_interp;
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/* Index of the basis statement S0, if any, in the candidate vector. */
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cand_idx basis;
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/* First candidate for which this candidate is a basis, if one exists. */
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cand_idx dependent;
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/* Next candidate having the same basis as this one. */
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cand_idx sibling;
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2013-05-03 20:56:39 +02:00
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/* If this is a conditional candidate, the CAND_PHI candidate
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that defines the base SSA name B. */
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cand_idx def_phi;
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/* Savings that can be expected from eliminating dead code if this
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candidate is replaced. */
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int dead_savings;
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};
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typedef struct slsr_cand_d slsr_cand, *slsr_cand_t;
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typedef const struct slsr_cand_d *const_slsr_cand_t;
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/* Pointers to candidates are chained together as part of a mapping
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from base expressions to the candidates that use them. */
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struct cand_chain_d
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{
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/* Base expression for the chain of candidates: often, but not
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always, an SSA name. */
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tree base_expr;
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/* Pointer to a candidate. */
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slsr_cand_t cand;
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/* Chain pointer. */
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struct cand_chain_d *next;
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};
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typedef struct cand_chain_d cand_chain, *cand_chain_t;
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typedef const struct cand_chain_d *const_cand_chain_t;
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2012-08-08 03:35:22 +02:00
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/* Information about a unique "increment" associated with candidates
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having an SSA name for a stride. An increment is the difference
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between the index of the candidate and the index of its basis,
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i.e., (i - i') as discussed in the module commentary.
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When we are not going to generate address arithmetic we treat
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increments that differ only in sign as the same, allowing sharing
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of the cost of initializers. The absolute value of the increment
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is stored in the incr_info. */
|
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struct incr_info_d
|
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{
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/* The increment that relates a candidate to its basis. */
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double_int incr;
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/* How many times the increment occurs in the candidate tree. */
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unsigned count;
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/* Cost of replacing candidates using this increment. Negative and
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zero costs indicate replacement should be performed. */
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int cost;
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/* If this increment is profitable but is not -1, 0, or 1, it requires
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an initializer T_0 = stride * incr to be found or introduced in the
|
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nearest common dominator of all candidates. This field holds T_0
|
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for subsequent use. */
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tree initializer;
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/* If the initializer was found to already exist, this is the block
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where it was found. */
|
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basic_block init_bb;
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};
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typedef struct incr_info_d incr_info, *incr_info_t;
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|
2012-06-26 18:27:50 +02:00
|
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/* Candidates are maintained in a vector. If candidate X dominates
|
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|
candidate Y, then X appears before Y in the vector; but the
|
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|
converse does not necessarily hold. */
|
This patch rewrites the old VEC macro-based interface into a new one based on the template class 'vec'.
This patch rewrites the old VEC macro-based interface into a new one
based on the template class 'vec'. The user-visible changes are
described in http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec.
I have tested the patch pretty extensively:
- Regular bootstraps on x86_64, ppc, ia64, sparc and hppa.
- Bootstraps with --enable-checking=release
- Bootstraps with --enable-checking=gc,gcac
- Basic builds on all targets (using contrib/config-list.mk).
We no longer access the vectors via VEC_* macros. The pattern is
"VEC_operation (T, A, V, args)" becomes "V.operation (args)".
The only thing I could not do is create proper ctors and dtors for the
vec class. Since these vectors are stored in unions, we
have to keep them as PODs (C++03 does not allow non-PODs in unions).
This means that creation and destruction must be explicit. There is a
new method vec<type, allocation, layout>::create() and another vec<type,
allocation, layout>::destroy() to allocate the internal vector.
For vectors that must be pointers, there is a family of free functions
that implement the operations that need to tolerate NULL vectors.
These functions all start with the prefix 'vec_safe_'. See the wiki
page for details.
The gengtype change removes the special handling for VEC() that used
to exist in gengtype. Additionally, it allows gengtype to recognize
templates of more than one argument and introduces the concept of an
undefined type (useful for template arguments that may or may not be
types).
When a TYPE_UNDEFINED is reached, gengtype will ignore it if it
happens inside a type marked with GTY((user)). Otherwise, it will
emit an error.
Finally, gengtype rejects root types marked GTY((user)) that are not
first class pointers.
2012-11-16 Diego Novillo <dnovillo@google.com>
VEC API overhaul (http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec)
* vec.c (register_overhead): Convert it into
member function of vec_prefix.
(release_overhead): Likewise.
(calculate_allocation): Likewise.
(vec_heap_free): Remove.
(vec_gc_o_reserve_1): Remove.
(vec_heap_o_reserve_1): Remove.
(vec_stack_o_reserve_1): Remove.
(vec_stack_o_reserve_exact): Remove.
(register_stack_vec): New.
(stack_vec_register_index): New.
(unregister_stack_vec): New.
(vec_assert_fail): Remove.
* vec.h: Conditionally include ggc.h. Document conditional
hackery.
Update top-level documentation.
(ALONE_VEC_CHECK_INFO): Remove.
(VEC_CHECK_INFO): Remove.
(ALONE_VEC_CHECK_DECL): Remove.
(VEC_CHECK_DECL): Remove.
(ALONE_VEC_CHECK_PASS): Remove.
(VEC_CHECK_PASS): Remove.
(VEC_ASSERT): Remove.
(vec_prefix): Add friends va_gc, va_gc_atomic, va_heap and
va_stack.
Mark fields alloc_ and num_ as protected.
(struct vec_t): Remove. Remove all function members.
(struct vl_embed): Declare.
(struct vl_ptr): Declare.
(free): Remove.
(reserve_exact): Remove.
(reserve): Remove.
(safe_splice): Remove.
(safe_push): Remove.
(safe_grow): Remove.
(safe_grow_cleared): Remove.
(safe_insert): Remove.
(DEF_VEC_I): Remove.
(DEF_VEC_ALLOC_I): Remove.
(DEF_VEC_P): Remove.
(DEF_VEC_ALLOC_P): Remove.
(DEF_VEC_O): Remove.
(DEF_VEC_ALLOC_O): Remove.
(DEF_VEC_ALLOC_P_STACK): Remove.
(DEF_VEC_ALLOC_O_STACK): Remove.
(DEF_VEC_ALLOC_I_STACK): Remove.
(DEF_VEC_A): Remove.
(DEF_VEC_ALLOC_A): Remove.
(vec_stack_p_reserve_exact_1): Remove.
(vec_stack_o_reserve): Remove.
(vec_stack_o_reserve_exact): Remove.
(VEC_length): Remove.
(VEC_empty): Remove.
(VEC_address): Remove.
(vec_address): Remove.
(VEC_last): Remove.
(VEC_index): Remove.
(VEC_iterate): Remove.
(VEC_embedded_size): Remove.
(VEC_embedded_init): Remove.
(VEC_free): Remove.
(VEC_copy): Remove.
(VEC_space): Remove.
(VEC_reserve): Remove.
(VEC_reserve_exact): Remove.
(VEC_splice): Remove.
(VEC_safe_splice): Remove.
(VEC_quick_push): Remove.
(VEC_safe_push): Remove.
(VEC_pop): Remove.
(VEC_truncate): Remove.
(VEC_safe_grow): Remove.
(VEC_replace): Remove.
(VEC_quick_insert): Remove.
(VEC_safe_insert): Remove.
(VEC_ordered_remove): Remove.
(VEC_unordered_remove): Remove.
(VEC_block_remove): Remove.
(VEC_lower_bound): Remove.
(VEC_alloc): Remove.
(VEC_qsort): Remove.
(va_heap): Declare.
(va_heap::default_layout): New typedef to vl_ptr.
(va_heap::reserve): New.
(va_heap::release): New.
(va_gc): Declare.
(va_gc::default_layout): New typedef to vl_embed.
(va_gc::reserve): New.
(va_gc::release): New.
(va_gc_atomic): Declare. Inherit from va_gc.
(va_stack): Declare.
(va_stack::default_layout): New typedef to vl_ptr.
(va_stack::alloc): New.
(va_stack::reserve): New.
(va_stack::release): New.
(register_stack_vec): Declare.
(stack_vec_register_index): Declare.
(unregister_stack_vec): Declare.
(vec<T, A = va_heap, L = typename A::default_layout>): Declare
empty vec template.
(vec<T, A, vl_embed>): Partial specialization for embedded
layout.
(vec<T, A, vl_embed>::allocated): New.
(vec<T, A, vl_embed>::length): New.
(vec<T, A, vl_embed>::is_empty): New.
(vec<T, A, vl_embed>::address): New.
(vec<T, A, vl_embed>::operator[]): New.
(vec<T, A, vl_embed>::last New.
(vec<T, A, vl_embed>::space): New.
(vec<T, A, vl_embed>::iterate): New.
(vec<T, A, vl_embed>::iterate): New.
(vec<T, A, vl_embed>::copy): New.
(vec<T, A, vl_embed>::splice): New.
(vec<T, A, vl_embed>::quick_push New.
(vec<T, A, vl_embed>::pop New.
(vec<T, A, vl_embed>::truncate): New.
(vec<T, A, vl_embed>::quick_insert): New.
(vec<T, A, vl_embed>::ordered_remove): New.
(vec<T, A, vl_embed>::unordered_remove): New.
(vec<T, A, vl_embed>::block_remove): New.
(vec<T, A, vl_embed>::qsort): New.
(vec<T, A, vl_embed>::lower_bound): New.
(vec<T, A, vl_embed>::embedded_size): New.
(vec<T, A, vl_embed>::embedded_init): New.
(vec<T, A, vl_embed>::quick_grow): New.
(vec<T, A, vl_embed>::quick_grow_cleared): New.
(vec_safe_space): New.
(vec_safe_length): New.
(vec_safe_address): New.
(vec_safe_is_empty): New.
(vec_safe_reserve): New.
(vec_safe_reserve_exact): New.
(vec_alloc): New.
(vec_free): New.
(vec_safe_grow): New.
(vec_safe_grow_cleared): New.
(vec_safe_iterate): New.
(vec_safe_push): New.
(vec_safe_insert): New.
(vec_safe_truncate): New.
(vec_safe_copy): New.
(vec_safe_splice): New.
(vec<T, A, vl_ptr>): New partial specialization for the space
efficient layout.
(vec<T, A, vl_ptr>::exists): New.
(vec<T, A, vl_ptr>::is_empty): New.
(vec<T, A, vl_ptr>::length): New.
(vec<T, A, vl_ptr>::address): New.
(vec<T, A, vl_ptr>::operator[]): New.
(vec<T, A, vl_ptr>::operator!=): New.
(vec<T, A, vl_ptr>::operator==): New.
(vec<T, A, vl_ptr>::last): New.
(vec<T, A, vl_ptr>::space): New.
(vec<T, A, vl_ptr>::iterate): New.
(vec<T, A, vl_ptr>::copy): New.
(vec<T, A, vl_ptr>::reserve): New.
(vec<T, A, vl_ptr>::reserve_exact): New.
(vec<T, A, vl_ptr>::splice): New.
(vec<T, A, vl_ptr>::safe_splice): New.
(vec<T, A, vl_ptr>::quick_push): New.
(vec<T, A, vl_ptr>::safe_push): New.
(vec<T, A, vl_ptr>::pop): New.
(vec<T, A, vl_ptr>::truncate): New.
(vec<T, A, vl_ptr>::safe_grow): New.
(vec<T, A, vl_ptr>::safe_grow_cleared): New.
(vec<T, A, vl_ptr>::quick_grow): New.
(vec<T, A, vl_ptr>::quick_grow_cleared): New.
(vec<T, A, vl_ptr>::quick_insert): New.
(vec<T, A, vl_ptr>::safe_insert): New.
(vec<T, A, vl_ptr>::ordered_remove): New.
(vec<T, A, vl_ptr>::unordered_remove): New.
(vec<T, A, vl_ptr>::block_remove): New.
(vec<T, A, vl_ptr>::qsort): New.
(vec<T, A, vl_ptr>::lower_bound): New.
(vec_stack_alloc): Define.
(FOR_EACH_VEC_SAFE_ELT): Define.
* vecir.h: Remove. Update all users.
* vecprim.h: Remove. Update all users.
Move uchar to coretypes.h.
* Makefile.in (VEC_H): Add $(GGC_H).
Remove vecir.h and vecprim.h dependencies everywhere.
2012-11-16 Diego Novillo <dnovillo@google.com>
* gengtype-lex.l (VEC): Remove.
Add characters in the set [\!\>\.-].
* gengtype-parse.c (token_names): Remove "VEC".
(require_template_declaration): Remove handling of VEC_TOKEN.
(type): Likewise.
Call create_user_defined_type when parsing GTY((user)).
* gengtype-state.c (type_lineloc): handle TYPE_UNDEFINED.
(write_state_undefined_type): New.
(write_state_type): Call write_state_undefined_type for
TYPE_UNDEFINED.
(read_state_type): Call read_state_undefined_type for
TYPE_UNDEFINED.
* gengtype.c (dbgprint_count_type_at): Handle TYPE_UNDEFINED.
(create_user_defined_type): Make extern.
(type_for_name): Factor out of resolve_typedef.
(create_undefined_type): New
(resolve_typedef): Call it when we cannot find a previous
typedef and the type is not a template.
(find_structure): Accept TYPE_UNDEFINED.
(set_gc_used_type): Add argument ALLOWED_UNDEFINED_TYPES,
default to false.
Emit an error for TYPE_UNDEFINED unless LEVEL is GC_UNUSED or
ALLOWED_UNDEFINED_TYPES is set.
Set ALLOWED_UNDEFINED_TYPES to true for TYPE_USER_STRUCT.
(filter_type_name): Accept templates with more than one
argument.
(output_mangled_typename): Handle TYPE_UNDEFINED
(walk_type): Likewise.
(write_types_process_field): Likewise.
(write_func_for_structure): If CHAIN_NEXT is set, ORIG_S
should not be a user-defined type.
(write_types_local_user_process_field): Handle TYPE_ARRAY,
TYPE_NONE and TYPE_UNDEFINED.
(write_types_local_process_field): Likewise.
(contains_scalar_p): Return 0 for TYPE_USER_STRUCT.
(write_root): Reject user-defined types that are not pointers.
Handle TYPE_NONE, TYPE_UNDEFINED, TYPE_UNION, TYPE_LANG_STRUCT
and TYPE_PARAM_STRUCT.
(output_typename): Handle TYPE_NONE, TYPE_UNDEFINED, and
TYPE_ARRAY.
(dump_typekind): Handle TYPE_UNDEFINED.
* gengtype.h (enum typekind): Add TYPE_UNDEFINED.
(create_user_defined_type): Declare.
(enum gty_token): Remove VEC_TOKEN.
2012-11-16 Diego Novillo <dnovillo@google.com>
Adjust for new vec API (http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec)
* coretypes.h (uchar): Define.
* alias.c: Use new vec API in vec.h.
* asan.c: Likewise.
* attribs.c: Likewise.
* basic-block.h: Likewise.
* bb-reorder.c: Likewise.
* builtins.c: Likewise.
* calls.c: Likewise.
* cfg.c: Likewise.
* cfganal.c: Likewise.
* cfgcleanup.c: Likewise.
* cfgexpand.c: Likewise.
* cfghooks.c: Likewise.
* cfghooks.h: Likewise.
* cfgloop.c: Likewise.
* cfgloop.h: Likewise.
* cfgloopanal.c: Likewise.
* cfgloopmanip.c: Likewise.
* cfgrtl.c: Likewise.
* cgraph.c: Likewise.
* cgraph.h: Likewise.
* cgraphclones.c: Likewise.
* cgraphunit.c: Likewise.
* combine.c: Likewise.
* compare-elim.c: Likewise.
* coverage.c: Likewise.
* cprop.c: Likewise.
* data-streamer.h: Likewise.
* dbxout.c: Likewise.
* dce.c: Likewise.
* df-core.c: Likewise.
* df-problems.c: Likewise.
* df-scan.c: Likewise.
* dominance.c: Likewise.
* domwalk.c: Likewise.
* domwalk.h: Likewise.
* dse.c: Likewise.
* dwarf2cfi.c: Likewise.
* dwarf2out.c: Likewise.
* dwarf2out.h: Likewise.
* emit-rtl.c: Likewise.
* except.c: Likewise.
* except.h: Likewise.
* expr.c: Likewise.
* expr.h: Likewise.
* final.c: Likewise.
* fold-const.c: Likewise.
* function.c: Likewise.
* function.h: Likewise.
* fwprop.c: Likewise.
* gcc.c: Likewise.
* gcse.c: Likewise.
* genattr.c: Likewise.
* genattrtab.c: Likewise.
* genautomata.c: Likewise.
* genextract.c: Likewise.
* genopinit.c: Likewise
* ggc-common.c: Likewise.
* ggc.h: Likewise.
* gimple-low.c: Likewise.
* gimple-ssa-strength-reduction.c: Likewise.
* gimple-streamer-in.c: Likewise.
* gimple.c: Likewise.
* gimple.h: Likewise.
* gimplify.c: Likewise.
* graph.c: Likewise.
* graphds.c: Likewise.
* graphds.h: Likewise.
* graphite-blocking.c: Likewise.
* graphite-clast-to-gimple.c: Likewise.
* graphite-dependences.c: Likewise.
* graphite-interchange.c: Likewise.
* graphite-optimize-isl.c: Likewise.
* graphite-poly.c: Likewise.
* graphite-poly.h: Likewise.
* graphite-scop-detection.c: Likewise.
* graphite-scop-detection.h: Likewise.
* graphite-sese-to-poly.c: Likewise.
* graphite.c: Likewise.
* godump.c: Likewise.
* haifa-sched.c: Likewise.
* hw-doloop.c: Likewise.
* hw-doloop.h: Likewise.
* ifcvt.c: Likewise.
* insn-addr.h: Likewise.
* ipa-cp.c: Likewise.
* ipa-inline-analysis.c: Likewise.
* ipa-inline-transform.c: Likewise.
* ipa-inline.c: Likewise.
* ipa-inline.h: Likewise.
* ipa-prop.c: Likewise.
* ipa-prop.h: Likewise.
* ipa-pure-const.c: Likewise.
* ipa-ref-inline.h: Likewise.
* ipa-ref.c: Likewise.
* ipa-ref.h: Likewise.
* ipa-reference.c: Likewise.
* ipa-split.c: Likewise.
* ipa-utils.c: Likewise.
* ipa-utils.h: Likewise.
* ipa.c: Likewise.
* ira-build.c: Likewise.
* ira-color.c: Likewise.
* ira-emit.c: Likewise.
* ira-int.h: Likewise.
* ira.c: Likewise.
* loop-invariant.c: Likewise.
* loop-unroll.c: Likewise.
* lower-subreg.c: Likewise.
* lra-lives.c: Likewise.
* lra.c: Likewise.
* lto-cgraph.c: Likewise.
* lto-section-out.c: Likewise.
* lto-streamer-in.c: Likewise.
* lto-streamer-out.c: Likewise.
* lto-streamer.h: Likewise.
* lto-symtab.c: Likewise.
* mcf.c: Likewise.
* modulo-sched.c: Likewise.
* omp-low.c: Likewise.
* opts-common.c: Likewise.
* opts-global.c: Likewise.
* opts.c: Likewise.
* opts.h: Likewise.
* passes.c: Likewise.
* predict.c: Likewise.
* print-tree.c: Likewise.
* profile.c: Likewise.
* profile.h: Likewise.
* read-rtl.c: Likewise.
* ree.c: Likewise.
* reg-stack.c: Likewise.
* regrename.c: Likewise.
* regrename.h: Likewise.
* reload.c: Likewise.
* reload.h: Likewise.
* reload1.c: Likewise.
* rtl.h: Likewise.
* sched-deps.c: Likewise.
* sched-int.h: Likewise.
* sdbout.c: Likewise.
* sel-sched-dump.c: Likewise.
* sel-sched-ir.c: Likewise.
* sel-sched-ir.h: Likewise.
* sel-sched.c: Likewise.
* sese.c: Likewise.
* sese.h: Likewise.
* statistics.h: Likewise.
* stmt.c: Likewise.
* stor-layout.c: Likewise.
* store-motion.c: Likewise.
* tlink.c: Likewise.
* toplev.c: Likewise.
* trans-mem.c: Likewise.
* tree-browser.c: Likewise.
* tree-call-cdce.c: Likewise.
* tree-cfg.c: Likewise.
* tree-cfgcleanup.c: Likewise.
* tree-chrec.c: Likewise.
* tree-chrec.h: Likewise.
* tree-complex.c: Likewise.
* tree-data-ref.c: Likewise.
* tree-data-ref.h: Likewise.
* tree-dfa.c: Likewise.
* tree-diagnostic.c: Likewise.
* tree-dump.c: Likewise.
* tree-eh.c: Likewise.
* tree-emutls.c: Likewise.
* tree-flow.h: Likewise.
* tree-if-conv.c: Likewise.
* tree-inline.c: Likewise.
* tree-inline.h: Likewise.
* tree-into-ssa.c: Likewise.
* tree-iterator.c: Likewise.
* tree-loop-distribution.c: Likewise.
* tree-mudflap.c: Likewise.
* tree-optimize.c: Likewise.
* tree-outof-ssa.c: Likewise.
* tree-parloops.c: Likewise.
* tree-phinodes.c: Likewise.
* tree-predcom.c: Likewise.
* tree-pretty-print.c: Likewise.
* tree-scalar-evolution.c: Likewise.
* tree-sra.c: Likewise.
* tree-ssa-address.c: Likewise.
* tree-ssa-alias.c: Likewise.
* tree-ssa-ccp.c: Likewise.
* tree-ssa-coalesce.c: Likewise.
* tree-ssa-dce.c: Likewise.
* tree-ssa-dom.c: Likewise.
* tree-ssa-forwprop.c: Likewise.
* tree-ssa-live.c: Likewise.
* tree-ssa-live.h: Likewise.
* tree-ssa-loop-im.c: Likewise.
* tree-ssa-loop-ivcanon.c: Likewise.
* tree-ssa-loop-ivopts.c: Likewise.
* tree-ssa-loop-manip.c: Likewise.
* tree-ssa-loop-niter.c: Likewise.
* tree-ssa-loop-prefetch.c: Likewise.
* tree-ssa-math-opts.c: Likewise.
* tree-ssa-operands.c: Likewise.
* tree-ssa-phiopt.c: Likewise.
* tree-ssa-phiprop.c: Likewise.
* tree-ssa-pre.c: Likewise.
* tree-ssa-propagate.c: Likewise.
* tree-ssa-reassoc.c: Likewise.
* tree-ssa-sccvn.c: Likewise.
* tree-ssa-sccvn.h: Likewise.
* tree-ssa-strlen.c: Likewise.
* tree-ssa-structalias.c: Likewise.
* tree-ssa-tail-merge.c: Likewise.
* tree-ssa-threadedge.c: Likewise.
* tree-ssa-threadupdate.c: Likewise.
* tree-ssa-uncprop.c: Likewise.
* tree-ssa-uninit.c: Likewise.
* tree-ssa.c: Likewise.
* tree-ssanames.c: Likewise.
* tree-stdarg.c: Likewise.
* tree-streamer-in.c: Likewise.
* tree-streamer-out.c: Likewise.
* tree-streamer.c: Likewise.
* tree-streamer.h: Likewise.
* tree-switch-conversion.c: Likewise.
* tree-vect-data-refs.c: Likewise.
* tree-vect-generic.c: Likewise.
* tree-vect-loop-manip.c: Likewise.
* tree-vect-loop.c: Likewise.
* tree-vect-patterns.c: Likewise.
* tree-vect-slp.c: Likewise.
* tree-vect-stmts.c: Likewise.
* tree-vectorizer.c: Likewise.
* tree-vectorizer.h: Likewise.
* tree-vrp.c: Likewise.
* tree.c: Likewise.
* tree.h: Likewise.
* value-prof.c: Likewise.
* value-prof.h: Likewise.
* var-tracking.c: Likewise.
* varasm.c: Likewise.
* varpool.c: Likewise.
* vmsdbgout.c: Likewise.
* config/bfin/bfin.c: Likewise.
* config/c6x/c6x.c: Likewise.
* config/darwin.c: Likewise.
* config/i386/i386.c: Likewise.
* config/ia64/ia64.c: Likewise.
* config/mep/mep.c: Likewise.
* config/mips/mips.c: Likewise.
* config/pa/pa.c: Likewise.
* config/rs6000/rs6000-c.c: Likewise.
* config/rs6000/rs6000.c: Likewise.
* config/rx/rx.c: Likewise.
* config/spu/spu-c.c: Likewise.
* config/vms/vms.c: Likewise.
* config/vxworks.c: Likewise.
* config/epiphany/resolve-sw-modes.c: Likewise.
From-SVN: r193595
2012-11-18 03:54:30 +01:00
|
|
|
|
static vec<slsr_cand_t> cand_vec;
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
|
|
|
|
enum cost_consts
|
|
|
|
|
{
|
|
|
|
|
COST_NEUTRAL = 0,
|
|
|
|
|
COST_INFINITE = 1000
|
|
|
|
|
};
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
enum stride_status
|
|
|
|
|
{
|
|
|
|
|
UNKNOWN_STRIDE = 0,
|
|
|
|
|
KNOWN_STRIDE = 1
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
enum phi_adjust_status
|
|
|
|
|
{
|
|
|
|
|
NOT_PHI_ADJUST = 0,
|
|
|
|
|
PHI_ADJUST = 1
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
enum count_phis_status
|
|
|
|
|
{
|
|
|
|
|
DONT_COUNT_PHIS = 0,
|
|
|
|
|
COUNT_PHIS = 1
|
|
|
|
|
};
|
|
|
|
|
|
2012-06-26 18:27:50 +02:00
|
|
|
|
/* Pointer map embodying a mapping from statements to candidates. */
|
|
|
|
|
static struct pointer_map_t *stmt_cand_map;
|
|
|
|
|
|
|
|
|
|
/* Obstack for candidates. */
|
|
|
|
|
static struct obstack cand_obstack;
|
|
|
|
|
|
|
|
|
|
/* Obstack for candidate chains. */
|
|
|
|
|
static struct obstack chain_obstack;
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
|
|
|
|
/* An array INCR_VEC of incr_infos is used during analysis of related
|
|
|
|
|
candidates having an SSA name for a stride. INCR_VEC_LEN describes
|
2013-05-07 16:11:21 +02:00
|
|
|
|
its current length. MAX_INCR_VEC_LEN is used to avoid costly
|
|
|
|
|
pathological cases. */
|
2012-08-08 03:35:22 +02:00
|
|
|
|
static incr_info_t incr_vec;
|
|
|
|
|
static unsigned incr_vec_len;
|
2013-05-07 16:11:21 +02:00
|
|
|
|
const int MAX_INCR_VEC_LEN = 16;
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
|
|
|
|
/* For a chain of candidates with unknown stride, indicates whether or not
|
|
|
|
|
we must generate pointer arithmetic when replacing statements. */
|
|
|
|
|
static bool address_arithmetic_p;
|
2013-05-03 20:56:39 +02:00
|
|
|
|
|
|
|
|
|
/* Forward function declarations. */
|
|
|
|
|
static slsr_cand_t base_cand_from_table (tree);
|
2013-05-07 14:44:50 +02:00
|
|
|
|
static tree introduce_cast_before_cand (slsr_cand_t, tree, tree);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
|
|
|
|
/* Produce a pointer to the IDX'th candidate in the candidate vector. */
|
|
|
|
|
|
|
|
|
|
static slsr_cand_t
|
|
|
|
|
lookup_cand (cand_idx idx)
|
|
|
|
|
{
|
This patch rewrites the old VEC macro-based interface into a new one based on the template class 'vec'.
This patch rewrites the old VEC macro-based interface into a new one
based on the template class 'vec'. The user-visible changes are
described in http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec.
I have tested the patch pretty extensively:
- Regular bootstraps on x86_64, ppc, ia64, sparc and hppa.
- Bootstraps with --enable-checking=release
- Bootstraps with --enable-checking=gc,gcac
- Basic builds on all targets (using contrib/config-list.mk).
We no longer access the vectors via VEC_* macros. The pattern is
"VEC_operation (T, A, V, args)" becomes "V.operation (args)".
The only thing I could not do is create proper ctors and dtors for the
vec class. Since these vectors are stored in unions, we
have to keep them as PODs (C++03 does not allow non-PODs in unions).
This means that creation and destruction must be explicit. There is a
new method vec<type, allocation, layout>::create() and another vec<type,
allocation, layout>::destroy() to allocate the internal vector.
For vectors that must be pointers, there is a family of free functions
that implement the operations that need to tolerate NULL vectors.
These functions all start with the prefix 'vec_safe_'. See the wiki
page for details.
The gengtype change removes the special handling for VEC() that used
to exist in gengtype. Additionally, it allows gengtype to recognize
templates of more than one argument and introduces the concept of an
undefined type (useful for template arguments that may or may not be
types).
When a TYPE_UNDEFINED is reached, gengtype will ignore it if it
happens inside a type marked with GTY((user)). Otherwise, it will
emit an error.
Finally, gengtype rejects root types marked GTY((user)) that are not
first class pointers.
2012-11-16 Diego Novillo <dnovillo@google.com>
VEC API overhaul (http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec)
* vec.c (register_overhead): Convert it into
member function of vec_prefix.
(release_overhead): Likewise.
(calculate_allocation): Likewise.
(vec_heap_free): Remove.
(vec_gc_o_reserve_1): Remove.
(vec_heap_o_reserve_1): Remove.
(vec_stack_o_reserve_1): Remove.
(vec_stack_o_reserve_exact): Remove.
(register_stack_vec): New.
(stack_vec_register_index): New.
(unregister_stack_vec): New.
(vec_assert_fail): Remove.
* vec.h: Conditionally include ggc.h. Document conditional
hackery.
Update top-level documentation.
(ALONE_VEC_CHECK_INFO): Remove.
(VEC_CHECK_INFO): Remove.
(ALONE_VEC_CHECK_DECL): Remove.
(VEC_CHECK_DECL): Remove.
(ALONE_VEC_CHECK_PASS): Remove.
(VEC_CHECK_PASS): Remove.
(VEC_ASSERT): Remove.
(vec_prefix): Add friends va_gc, va_gc_atomic, va_heap and
va_stack.
Mark fields alloc_ and num_ as protected.
(struct vec_t): Remove. Remove all function members.
(struct vl_embed): Declare.
(struct vl_ptr): Declare.
(free): Remove.
(reserve_exact): Remove.
(reserve): Remove.
(safe_splice): Remove.
(safe_push): Remove.
(safe_grow): Remove.
(safe_grow_cleared): Remove.
(safe_insert): Remove.
(DEF_VEC_I): Remove.
(DEF_VEC_ALLOC_I): Remove.
(DEF_VEC_P): Remove.
(DEF_VEC_ALLOC_P): Remove.
(DEF_VEC_O): Remove.
(DEF_VEC_ALLOC_O): Remove.
(DEF_VEC_ALLOC_P_STACK): Remove.
(DEF_VEC_ALLOC_O_STACK): Remove.
(DEF_VEC_ALLOC_I_STACK): Remove.
(DEF_VEC_A): Remove.
(DEF_VEC_ALLOC_A): Remove.
(vec_stack_p_reserve_exact_1): Remove.
(vec_stack_o_reserve): Remove.
(vec_stack_o_reserve_exact): Remove.
(VEC_length): Remove.
(VEC_empty): Remove.
(VEC_address): Remove.
(vec_address): Remove.
(VEC_last): Remove.
(VEC_index): Remove.
(VEC_iterate): Remove.
(VEC_embedded_size): Remove.
(VEC_embedded_init): Remove.
(VEC_free): Remove.
(VEC_copy): Remove.
(VEC_space): Remove.
(VEC_reserve): Remove.
(VEC_reserve_exact): Remove.
(VEC_splice): Remove.
(VEC_safe_splice): Remove.
(VEC_quick_push): Remove.
(VEC_safe_push): Remove.
(VEC_pop): Remove.
(VEC_truncate): Remove.
(VEC_safe_grow): Remove.
(VEC_replace): Remove.
(VEC_quick_insert): Remove.
(VEC_safe_insert): Remove.
(VEC_ordered_remove): Remove.
(VEC_unordered_remove): Remove.
(VEC_block_remove): Remove.
(VEC_lower_bound): Remove.
(VEC_alloc): Remove.
(VEC_qsort): Remove.
(va_heap): Declare.
(va_heap::default_layout): New typedef to vl_ptr.
(va_heap::reserve): New.
(va_heap::release): New.
(va_gc): Declare.
(va_gc::default_layout): New typedef to vl_embed.
(va_gc::reserve): New.
(va_gc::release): New.
(va_gc_atomic): Declare. Inherit from va_gc.
(va_stack): Declare.
(va_stack::default_layout): New typedef to vl_ptr.
(va_stack::alloc): New.
(va_stack::reserve): New.
(va_stack::release): New.
(register_stack_vec): Declare.
(stack_vec_register_index): Declare.
(unregister_stack_vec): Declare.
(vec<T, A = va_heap, L = typename A::default_layout>): Declare
empty vec template.
(vec<T, A, vl_embed>): Partial specialization for embedded
layout.
(vec<T, A, vl_embed>::allocated): New.
(vec<T, A, vl_embed>::length): New.
(vec<T, A, vl_embed>::is_empty): New.
(vec<T, A, vl_embed>::address): New.
(vec<T, A, vl_embed>::operator[]): New.
(vec<T, A, vl_embed>::last New.
(vec<T, A, vl_embed>::space): New.
(vec<T, A, vl_embed>::iterate): New.
(vec<T, A, vl_embed>::iterate): New.
(vec<T, A, vl_embed>::copy): New.
(vec<T, A, vl_embed>::splice): New.
(vec<T, A, vl_embed>::quick_push New.
(vec<T, A, vl_embed>::pop New.
(vec<T, A, vl_embed>::truncate): New.
(vec<T, A, vl_embed>::quick_insert): New.
(vec<T, A, vl_embed>::ordered_remove): New.
(vec<T, A, vl_embed>::unordered_remove): New.
(vec<T, A, vl_embed>::block_remove): New.
(vec<T, A, vl_embed>::qsort): New.
(vec<T, A, vl_embed>::lower_bound): New.
(vec<T, A, vl_embed>::embedded_size): New.
(vec<T, A, vl_embed>::embedded_init): New.
(vec<T, A, vl_embed>::quick_grow): New.
(vec<T, A, vl_embed>::quick_grow_cleared): New.
(vec_safe_space): New.
(vec_safe_length): New.
(vec_safe_address): New.
(vec_safe_is_empty): New.
(vec_safe_reserve): New.
(vec_safe_reserve_exact): New.
(vec_alloc): New.
(vec_free): New.
(vec_safe_grow): New.
(vec_safe_grow_cleared): New.
(vec_safe_iterate): New.
(vec_safe_push): New.
(vec_safe_insert): New.
(vec_safe_truncate): New.
(vec_safe_copy): New.
(vec_safe_splice): New.
(vec<T, A, vl_ptr>): New partial specialization for the space
efficient layout.
(vec<T, A, vl_ptr>::exists): New.
(vec<T, A, vl_ptr>::is_empty): New.
(vec<T, A, vl_ptr>::length): New.
(vec<T, A, vl_ptr>::address): New.
(vec<T, A, vl_ptr>::operator[]): New.
(vec<T, A, vl_ptr>::operator!=): New.
(vec<T, A, vl_ptr>::operator==): New.
(vec<T, A, vl_ptr>::last): New.
(vec<T, A, vl_ptr>::space): New.
(vec<T, A, vl_ptr>::iterate): New.
(vec<T, A, vl_ptr>::copy): New.
(vec<T, A, vl_ptr>::reserve): New.
(vec<T, A, vl_ptr>::reserve_exact): New.
(vec<T, A, vl_ptr>::splice): New.
(vec<T, A, vl_ptr>::safe_splice): New.
(vec<T, A, vl_ptr>::quick_push): New.
(vec<T, A, vl_ptr>::safe_push): New.
(vec<T, A, vl_ptr>::pop): New.
(vec<T, A, vl_ptr>::truncate): New.
(vec<T, A, vl_ptr>::safe_grow): New.
(vec<T, A, vl_ptr>::safe_grow_cleared): New.
(vec<T, A, vl_ptr>::quick_grow): New.
(vec<T, A, vl_ptr>::quick_grow_cleared): New.
(vec<T, A, vl_ptr>::quick_insert): New.
(vec<T, A, vl_ptr>::safe_insert): New.
(vec<T, A, vl_ptr>::ordered_remove): New.
(vec<T, A, vl_ptr>::unordered_remove): New.
(vec<T, A, vl_ptr>::block_remove): New.
(vec<T, A, vl_ptr>::qsort): New.
(vec<T, A, vl_ptr>::lower_bound): New.
(vec_stack_alloc): Define.
(FOR_EACH_VEC_SAFE_ELT): Define.
* vecir.h: Remove. Update all users.
* vecprim.h: Remove. Update all users.
Move uchar to coretypes.h.
* Makefile.in (VEC_H): Add $(GGC_H).
Remove vecir.h and vecprim.h dependencies everywhere.
2012-11-16 Diego Novillo <dnovillo@google.com>
* gengtype-lex.l (VEC): Remove.
Add characters in the set [\!\>\.-].
* gengtype-parse.c (token_names): Remove "VEC".
(require_template_declaration): Remove handling of VEC_TOKEN.
(type): Likewise.
Call create_user_defined_type when parsing GTY((user)).
* gengtype-state.c (type_lineloc): handle TYPE_UNDEFINED.
(write_state_undefined_type): New.
(write_state_type): Call write_state_undefined_type for
TYPE_UNDEFINED.
(read_state_type): Call read_state_undefined_type for
TYPE_UNDEFINED.
* gengtype.c (dbgprint_count_type_at): Handle TYPE_UNDEFINED.
(create_user_defined_type): Make extern.
(type_for_name): Factor out of resolve_typedef.
(create_undefined_type): New
(resolve_typedef): Call it when we cannot find a previous
typedef and the type is not a template.
(find_structure): Accept TYPE_UNDEFINED.
(set_gc_used_type): Add argument ALLOWED_UNDEFINED_TYPES,
default to false.
Emit an error for TYPE_UNDEFINED unless LEVEL is GC_UNUSED or
ALLOWED_UNDEFINED_TYPES is set.
Set ALLOWED_UNDEFINED_TYPES to true for TYPE_USER_STRUCT.
(filter_type_name): Accept templates with more than one
argument.
(output_mangled_typename): Handle TYPE_UNDEFINED
(walk_type): Likewise.
(write_types_process_field): Likewise.
(write_func_for_structure): If CHAIN_NEXT is set, ORIG_S
should not be a user-defined type.
(write_types_local_user_process_field): Handle TYPE_ARRAY,
TYPE_NONE and TYPE_UNDEFINED.
(write_types_local_process_field): Likewise.
(contains_scalar_p): Return 0 for TYPE_USER_STRUCT.
(write_root): Reject user-defined types that are not pointers.
Handle TYPE_NONE, TYPE_UNDEFINED, TYPE_UNION, TYPE_LANG_STRUCT
and TYPE_PARAM_STRUCT.
(output_typename): Handle TYPE_NONE, TYPE_UNDEFINED, and
TYPE_ARRAY.
(dump_typekind): Handle TYPE_UNDEFINED.
* gengtype.h (enum typekind): Add TYPE_UNDEFINED.
(create_user_defined_type): Declare.
(enum gty_token): Remove VEC_TOKEN.
2012-11-16 Diego Novillo <dnovillo@google.com>
Adjust for new vec API (http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec)
* coretypes.h (uchar): Define.
* alias.c: Use new vec API in vec.h.
* asan.c: Likewise.
* attribs.c: Likewise.
* basic-block.h: Likewise.
* bb-reorder.c: Likewise.
* builtins.c: Likewise.
* calls.c: Likewise.
* cfg.c: Likewise.
* cfganal.c: Likewise.
* cfgcleanup.c: Likewise.
* cfgexpand.c: Likewise.
* cfghooks.c: Likewise.
* cfghooks.h: Likewise.
* cfgloop.c: Likewise.
* cfgloop.h: Likewise.
* cfgloopanal.c: Likewise.
* cfgloopmanip.c: Likewise.
* cfgrtl.c: Likewise.
* cgraph.c: Likewise.
* cgraph.h: Likewise.
* cgraphclones.c: Likewise.
* cgraphunit.c: Likewise.
* combine.c: Likewise.
* compare-elim.c: Likewise.
* coverage.c: Likewise.
* cprop.c: Likewise.
* data-streamer.h: Likewise.
* dbxout.c: Likewise.
* dce.c: Likewise.
* df-core.c: Likewise.
* df-problems.c: Likewise.
* df-scan.c: Likewise.
* dominance.c: Likewise.
* domwalk.c: Likewise.
* domwalk.h: Likewise.
* dse.c: Likewise.
* dwarf2cfi.c: Likewise.
* dwarf2out.c: Likewise.
* dwarf2out.h: Likewise.
* emit-rtl.c: Likewise.
* except.c: Likewise.
* except.h: Likewise.
* expr.c: Likewise.
* expr.h: Likewise.
* final.c: Likewise.
* fold-const.c: Likewise.
* function.c: Likewise.
* function.h: Likewise.
* fwprop.c: Likewise.
* gcc.c: Likewise.
* gcse.c: Likewise.
* genattr.c: Likewise.
* genattrtab.c: Likewise.
* genautomata.c: Likewise.
* genextract.c: Likewise.
* genopinit.c: Likewise
* ggc-common.c: Likewise.
* ggc.h: Likewise.
* gimple-low.c: Likewise.
* gimple-ssa-strength-reduction.c: Likewise.
* gimple-streamer-in.c: Likewise.
* gimple.c: Likewise.
* gimple.h: Likewise.
* gimplify.c: Likewise.
* graph.c: Likewise.
* graphds.c: Likewise.
* graphds.h: Likewise.
* graphite-blocking.c: Likewise.
* graphite-clast-to-gimple.c: Likewise.
* graphite-dependences.c: Likewise.
* graphite-interchange.c: Likewise.
* graphite-optimize-isl.c: Likewise.
* graphite-poly.c: Likewise.
* graphite-poly.h: Likewise.
* graphite-scop-detection.c: Likewise.
* graphite-scop-detection.h: Likewise.
* graphite-sese-to-poly.c: Likewise.
* graphite.c: Likewise.
* godump.c: Likewise.
* haifa-sched.c: Likewise.
* hw-doloop.c: Likewise.
* hw-doloop.h: Likewise.
* ifcvt.c: Likewise.
* insn-addr.h: Likewise.
* ipa-cp.c: Likewise.
* ipa-inline-analysis.c: Likewise.
* ipa-inline-transform.c: Likewise.
* ipa-inline.c: Likewise.
* ipa-inline.h: Likewise.
* ipa-prop.c: Likewise.
* ipa-prop.h: Likewise.
* ipa-pure-const.c: Likewise.
* ipa-ref-inline.h: Likewise.
* ipa-ref.c: Likewise.
* ipa-ref.h: Likewise.
* ipa-reference.c: Likewise.
* ipa-split.c: Likewise.
* ipa-utils.c: Likewise.
* ipa-utils.h: Likewise.
* ipa.c: Likewise.
* ira-build.c: Likewise.
* ira-color.c: Likewise.
* ira-emit.c: Likewise.
* ira-int.h: Likewise.
* ira.c: Likewise.
* loop-invariant.c: Likewise.
* loop-unroll.c: Likewise.
* lower-subreg.c: Likewise.
* lra-lives.c: Likewise.
* lra.c: Likewise.
* lto-cgraph.c: Likewise.
* lto-section-out.c: Likewise.
* lto-streamer-in.c: Likewise.
* lto-streamer-out.c: Likewise.
* lto-streamer.h: Likewise.
* lto-symtab.c: Likewise.
* mcf.c: Likewise.
* modulo-sched.c: Likewise.
* omp-low.c: Likewise.
* opts-common.c: Likewise.
* opts-global.c: Likewise.
* opts.c: Likewise.
* opts.h: Likewise.
* passes.c: Likewise.
* predict.c: Likewise.
* print-tree.c: Likewise.
* profile.c: Likewise.
* profile.h: Likewise.
* read-rtl.c: Likewise.
* ree.c: Likewise.
* reg-stack.c: Likewise.
* regrename.c: Likewise.
* regrename.h: Likewise.
* reload.c: Likewise.
* reload.h: Likewise.
* reload1.c: Likewise.
* rtl.h: Likewise.
* sched-deps.c: Likewise.
* sched-int.h: Likewise.
* sdbout.c: Likewise.
* sel-sched-dump.c: Likewise.
* sel-sched-ir.c: Likewise.
* sel-sched-ir.h: Likewise.
* sel-sched.c: Likewise.
* sese.c: Likewise.
* sese.h: Likewise.
* statistics.h: Likewise.
* stmt.c: Likewise.
* stor-layout.c: Likewise.
* store-motion.c: Likewise.
* tlink.c: Likewise.
* toplev.c: Likewise.
* trans-mem.c: Likewise.
* tree-browser.c: Likewise.
* tree-call-cdce.c: Likewise.
* tree-cfg.c: Likewise.
* tree-cfgcleanup.c: Likewise.
* tree-chrec.c: Likewise.
* tree-chrec.h: Likewise.
* tree-complex.c: Likewise.
* tree-data-ref.c: Likewise.
* tree-data-ref.h: Likewise.
* tree-dfa.c: Likewise.
* tree-diagnostic.c: Likewise.
* tree-dump.c: Likewise.
* tree-eh.c: Likewise.
* tree-emutls.c: Likewise.
* tree-flow.h: Likewise.
* tree-if-conv.c: Likewise.
* tree-inline.c: Likewise.
* tree-inline.h: Likewise.
* tree-into-ssa.c: Likewise.
* tree-iterator.c: Likewise.
* tree-loop-distribution.c: Likewise.
* tree-mudflap.c: Likewise.
* tree-optimize.c: Likewise.
* tree-outof-ssa.c: Likewise.
* tree-parloops.c: Likewise.
* tree-phinodes.c: Likewise.
* tree-predcom.c: Likewise.
* tree-pretty-print.c: Likewise.
* tree-scalar-evolution.c: Likewise.
* tree-sra.c: Likewise.
* tree-ssa-address.c: Likewise.
* tree-ssa-alias.c: Likewise.
* tree-ssa-ccp.c: Likewise.
* tree-ssa-coalesce.c: Likewise.
* tree-ssa-dce.c: Likewise.
* tree-ssa-dom.c: Likewise.
* tree-ssa-forwprop.c: Likewise.
* tree-ssa-live.c: Likewise.
* tree-ssa-live.h: Likewise.
* tree-ssa-loop-im.c: Likewise.
* tree-ssa-loop-ivcanon.c: Likewise.
* tree-ssa-loop-ivopts.c: Likewise.
* tree-ssa-loop-manip.c: Likewise.
* tree-ssa-loop-niter.c: Likewise.
* tree-ssa-loop-prefetch.c: Likewise.
* tree-ssa-math-opts.c: Likewise.
* tree-ssa-operands.c: Likewise.
* tree-ssa-phiopt.c: Likewise.
* tree-ssa-phiprop.c: Likewise.
* tree-ssa-pre.c: Likewise.
* tree-ssa-propagate.c: Likewise.
* tree-ssa-reassoc.c: Likewise.
* tree-ssa-sccvn.c: Likewise.
* tree-ssa-sccvn.h: Likewise.
* tree-ssa-strlen.c: Likewise.
* tree-ssa-structalias.c: Likewise.
* tree-ssa-tail-merge.c: Likewise.
* tree-ssa-threadedge.c: Likewise.
* tree-ssa-threadupdate.c: Likewise.
* tree-ssa-uncprop.c: Likewise.
* tree-ssa-uninit.c: Likewise.
* tree-ssa.c: Likewise.
* tree-ssanames.c: Likewise.
* tree-stdarg.c: Likewise.
* tree-streamer-in.c: Likewise.
* tree-streamer-out.c: Likewise.
* tree-streamer.c: Likewise.
* tree-streamer.h: Likewise.
* tree-switch-conversion.c: Likewise.
* tree-vect-data-refs.c: Likewise.
* tree-vect-generic.c: Likewise.
* tree-vect-loop-manip.c: Likewise.
* tree-vect-loop.c: Likewise.
* tree-vect-patterns.c: Likewise.
* tree-vect-slp.c: Likewise.
* tree-vect-stmts.c: Likewise.
* tree-vectorizer.c: Likewise.
* tree-vectorizer.h: Likewise.
* tree-vrp.c: Likewise.
* tree.c: Likewise.
* tree.h: Likewise.
* value-prof.c: Likewise.
* value-prof.h: Likewise.
* var-tracking.c: Likewise.
* varasm.c: Likewise.
* varpool.c: Likewise.
* vmsdbgout.c: Likewise.
* config/bfin/bfin.c: Likewise.
* config/c6x/c6x.c: Likewise.
* config/darwin.c: Likewise.
* config/i386/i386.c: Likewise.
* config/ia64/ia64.c: Likewise.
* config/mep/mep.c: Likewise.
* config/mips/mips.c: Likewise.
* config/pa/pa.c: Likewise.
* config/rs6000/rs6000-c.c: Likewise.
* config/rs6000/rs6000.c: Likewise.
* config/rx/rx.c: Likewise.
* config/spu/spu-c.c: Likewise.
* config/vms/vms.c: Likewise.
* config/vxworks.c: Likewise.
* config/epiphany/resolve-sw-modes.c: Likewise.
From-SVN: r193595
2012-11-18 03:54:30 +01:00
|
|
|
|
return cand_vec[idx - 1];
|
2012-06-26 18:27:50 +02:00
|
|
|
|
}
|
|
|
|
|
|
2013-04-26 02:28:35 +02:00
|
|
|
|
/* Helper for hashing a candidate chain header. */
|
2012-08-01 15:02:38 +02:00
|
|
|
|
|
2013-04-26 02:28:35 +02:00
|
|
|
|
struct cand_chain_hasher : typed_noop_remove <cand_chain>
|
2012-08-01 15:02:38 +02:00
|
|
|
|
{
|
2013-04-26 02:28:35 +02:00
|
|
|
|
typedef cand_chain value_type;
|
|
|
|
|
typedef cand_chain compare_type;
|
|
|
|
|
static inline hashval_t hash (const value_type *);
|
|
|
|
|
static inline bool equal (const value_type *, const compare_type *);
|
|
|
|
|
};
|
2012-08-01 15:02:38 +02:00
|
|
|
|
|
2013-04-26 02:28:35 +02:00
|
|
|
|
inline hashval_t
|
|
|
|
|
cand_chain_hasher::hash (const value_type *p)
|
2012-08-01 15:02:38 +02:00
|
|
|
|
{
|
2013-04-26 02:28:35 +02:00
|
|
|
|
tree base_expr = p->base_expr;
|
|
|
|
|
return iterative_hash_expr (base_expr, 0);
|
2012-08-01 15:02:38 +02:00
|
|
|
|
}
|
|
|
|
|
|
2013-04-26 02:28:35 +02:00
|
|
|
|
inline bool
|
|
|
|
|
cand_chain_hasher::equal (const value_type *chain1, const compare_type *chain2)
|
2012-08-01 15:02:38 +02:00
|
|
|
|
{
|
2012-08-01 16:00:35 +02:00
|
|
|
|
return operand_equal_p (chain1->base_expr, chain2->base_expr, 0);
|
2012-08-01 15:02:38 +02:00
|
|
|
|
}
|
2013-04-26 02:28:35 +02:00
|
|
|
|
|
|
|
|
|
/* Hash table embodying a mapping from base exprs to chains of candidates. */
|
|
|
|
|
static hash_table <cand_chain_hasher> base_cand_map;
|
2012-08-01 15:02:38 +02:00
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
/* Look in the candidate table for a CAND_PHI that defines BASE and
|
2013-05-08 14:22:32 +02:00
|
|
|
|
return it if found; otherwise return NULL. */
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
static cand_idx
|
2013-05-08 14:22:32 +02:00
|
|
|
|
find_phi_def (tree base)
|
2013-05-03 20:56:39 +02:00
|
|
|
|
{
|
|
|
|
|
slsr_cand_t c;
|
|
|
|
|
|
|
|
|
|
if (TREE_CODE (base) != SSA_NAME)
|
|
|
|
|
return 0;
|
2013-05-07 14:39:32 +02:00
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
c = base_cand_from_table (base);
|
|
|
|
|
|
|
|
|
|
if (!c || c->kind != CAND_PHI)
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
return c->cand_num;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Helper routine for find_basis_for_candidate. May be called twice:
|
|
|
|
|
once for the candidate's base expr, and optionally again for the
|
|
|
|
|
candidate's phi definition. */
|
|
|
|
|
|
|
|
|
|
static slsr_cand_t
|
|
|
|
|
find_basis_for_base_expr (slsr_cand_t c, tree base_expr)
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
2012-08-01 15:02:38 +02:00
|
|
|
|
cand_chain mapping_key;
|
2012-06-26 18:27:50 +02:00
|
|
|
|
cand_chain_t chain;
|
|
|
|
|
slsr_cand_t basis = NULL;
|
|
|
|
|
|
2012-09-11 14:23:25 +02:00
|
|
|
|
// Limit potential of N^2 behavior for long candidate chains.
|
|
|
|
|
int iters = 0;
|
|
|
|
|
int max_iters = PARAM_VALUE (PARAM_MAX_SLSR_CANDIDATE_SCAN);
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
mapping_key.base_expr = base_expr;
|
2013-04-26 02:28:35 +02:00
|
|
|
|
chain = base_cand_map.find (&mapping_key);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
2012-09-11 14:23:25 +02:00
|
|
|
|
for (; chain && iters < max_iters; chain = chain->next, ++iters)
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
|
|
|
|
slsr_cand_t one_basis = chain->cand;
|
|
|
|
|
|
|
|
|
|
if (one_basis->kind != c->kind
|
2012-10-23 00:09:22 +02:00
|
|
|
|
|| one_basis->cand_stmt == c->cand_stmt
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|| !operand_equal_p (one_basis->stride, c->stride, 0)
|
|
|
|
|
|| !types_compatible_p (one_basis->cand_type, c->cand_type)
|
|
|
|
|
|| !dominated_by_p (CDI_DOMINATORS,
|
|
|
|
|
gimple_bb (c->cand_stmt),
|
|
|
|
|
gimple_bb (one_basis->cand_stmt)))
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
if (!basis || basis->cand_num < one_basis->cand_num)
|
|
|
|
|
basis = one_basis;
|
|
|
|
|
}
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
return basis;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Use the base expr from candidate C to look for possible candidates
|
|
|
|
|
that can serve as a basis for C. Each potential basis must also
|
|
|
|
|
appear in a block that dominates the candidate statement and have
|
|
|
|
|
the same stride and type. If more than one possible basis exists,
|
|
|
|
|
the one with highest index in the vector is chosen; this will be
|
|
|
|
|
the most immediately dominating basis. */
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
find_basis_for_candidate (slsr_cand_t c)
|
|
|
|
|
{
|
|
|
|
|
slsr_cand_t basis = find_basis_for_base_expr (c, c->base_expr);
|
|
|
|
|
|
|
|
|
|
/* If a candidate doesn't have a basis using its base expression,
|
|
|
|
|
it may have a basis hidden by one or more intervening phis. */
|
|
|
|
|
if (!basis && c->def_phi)
|
|
|
|
|
{
|
|
|
|
|
basic_block basis_bb, phi_bb;
|
|
|
|
|
slsr_cand_t phi_cand = lookup_cand (c->def_phi);
|
|
|
|
|
basis = find_basis_for_base_expr (c, phi_cand->base_expr);
|
|
|
|
|
|
|
|
|
|
if (basis)
|
|
|
|
|
{
|
|
|
|
|
/* A hidden basis must dominate the phi-definition of the
|
|
|
|
|
candidate's base name. */
|
|
|
|
|
phi_bb = gimple_bb (phi_cand->cand_stmt);
|
|
|
|
|
basis_bb = gimple_bb (basis->cand_stmt);
|
|
|
|
|
|
|
|
|
|
if (phi_bb == basis_bb
|
|
|
|
|
|| !dominated_by_p (CDI_DOMINATORS, phi_bb, basis_bb))
|
|
|
|
|
{
|
|
|
|
|
basis = NULL;
|
|
|
|
|
c->basis = 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* If we found a hidden basis, estimate additional dead-code
|
|
|
|
|
savings if the phi and its feeding statements can be removed. */
|
|
|
|
|
if (basis && has_single_use (gimple_phi_result (phi_cand->cand_stmt)))
|
|
|
|
|
c->dead_savings += phi_cand->dead_savings;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2012-06-26 18:27:50 +02:00
|
|
|
|
if (basis)
|
|
|
|
|
{
|
|
|
|
|
c->sibling = basis->dependent;
|
|
|
|
|
basis->dependent = c->cand_num;
|
|
|
|
|
return basis->cand_num;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
2012-08-01 16:00:35 +02:00
|
|
|
|
/* Record a mapping from the base expression of C to C itself, indicating that
|
|
|
|
|
C may potentially serve as a basis using that base expression. */
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
record_potential_basis (slsr_cand_t c)
|
|
|
|
|
{
|
2012-08-01 15:02:38 +02:00
|
|
|
|
cand_chain_t node;
|
2013-04-26 02:28:35 +02:00
|
|
|
|
cand_chain **slot;
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
|
|
|
|
node = (cand_chain_t) obstack_alloc (&chain_obstack, sizeof (cand_chain));
|
2012-08-01 16:00:35 +02:00
|
|
|
|
node->base_expr = c->base_expr;
|
2012-06-26 18:27:50 +02:00
|
|
|
|
node->cand = c;
|
|
|
|
|
node->next = NULL;
|
2013-04-26 02:28:35 +02:00
|
|
|
|
slot = base_cand_map.find_slot (node, INSERT);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
2012-08-01 15:02:38 +02:00
|
|
|
|
if (*slot)
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
2012-08-01 15:02:38 +02:00
|
|
|
|
cand_chain_t head = (cand_chain_t) (*slot);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
node->next = head->next;
|
|
|
|
|
head->next = node;
|
|
|
|
|
}
|
|
|
|
|
else
|
2012-08-01 15:02:38 +02:00
|
|
|
|
*slot = node;
|
2012-06-26 18:27:50 +02:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Allocate storage for a new candidate and initialize its fields.
|
|
|
|
|
Attempt to find a basis for the candidate. */
|
|
|
|
|
|
|
|
|
|
static slsr_cand_t
|
|
|
|
|
alloc_cand_and_find_basis (enum cand_kind kind, gimple gs, tree base,
|
|
|
|
|
double_int index, tree stride, tree ctype,
|
|
|
|
|
unsigned savings)
|
|
|
|
|
{
|
|
|
|
|
slsr_cand_t c = (slsr_cand_t) obstack_alloc (&cand_obstack,
|
|
|
|
|
sizeof (slsr_cand));
|
|
|
|
|
c->cand_stmt = gs;
|
2012-08-01 16:00:35 +02:00
|
|
|
|
c->base_expr = base;
|
2012-06-26 18:27:50 +02:00
|
|
|
|
c->stride = stride;
|
|
|
|
|
c->index = index;
|
|
|
|
|
c->cand_type = ctype;
|
|
|
|
|
c->kind = kind;
|
This patch rewrites the old VEC macro-based interface into a new one based on the template class 'vec'.
This patch rewrites the old VEC macro-based interface into a new one
based on the template class 'vec'. The user-visible changes are
described in http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec.
I have tested the patch pretty extensively:
- Regular bootstraps on x86_64, ppc, ia64, sparc and hppa.
- Bootstraps with --enable-checking=release
- Bootstraps with --enable-checking=gc,gcac
- Basic builds on all targets (using contrib/config-list.mk).
We no longer access the vectors via VEC_* macros. The pattern is
"VEC_operation (T, A, V, args)" becomes "V.operation (args)".
The only thing I could not do is create proper ctors and dtors for the
vec class. Since these vectors are stored in unions, we
have to keep them as PODs (C++03 does not allow non-PODs in unions).
This means that creation and destruction must be explicit. There is a
new method vec<type, allocation, layout>::create() and another vec<type,
allocation, layout>::destroy() to allocate the internal vector.
For vectors that must be pointers, there is a family of free functions
that implement the operations that need to tolerate NULL vectors.
These functions all start with the prefix 'vec_safe_'. See the wiki
page for details.
The gengtype change removes the special handling for VEC() that used
to exist in gengtype. Additionally, it allows gengtype to recognize
templates of more than one argument and introduces the concept of an
undefined type (useful for template arguments that may or may not be
types).
When a TYPE_UNDEFINED is reached, gengtype will ignore it if it
happens inside a type marked with GTY((user)). Otherwise, it will
emit an error.
Finally, gengtype rejects root types marked GTY((user)) that are not
first class pointers.
2012-11-16 Diego Novillo <dnovillo@google.com>
VEC API overhaul (http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec)
* vec.c (register_overhead): Convert it into
member function of vec_prefix.
(release_overhead): Likewise.
(calculate_allocation): Likewise.
(vec_heap_free): Remove.
(vec_gc_o_reserve_1): Remove.
(vec_heap_o_reserve_1): Remove.
(vec_stack_o_reserve_1): Remove.
(vec_stack_o_reserve_exact): Remove.
(register_stack_vec): New.
(stack_vec_register_index): New.
(unregister_stack_vec): New.
(vec_assert_fail): Remove.
* vec.h: Conditionally include ggc.h. Document conditional
hackery.
Update top-level documentation.
(ALONE_VEC_CHECK_INFO): Remove.
(VEC_CHECK_INFO): Remove.
(ALONE_VEC_CHECK_DECL): Remove.
(VEC_CHECK_DECL): Remove.
(ALONE_VEC_CHECK_PASS): Remove.
(VEC_CHECK_PASS): Remove.
(VEC_ASSERT): Remove.
(vec_prefix): Add friends va_gc, va_gc_atomic, va_heap and
va_stack.
Mark fields alloc_ and num_ as protected.
(struct vec_t): Remove. Remove all function members.
(struct vl_embed): Declare.
(struct vl_ptr): Declare.
(free): Remove.
(reserve_exact): Remove.
(reserve): Remove.
(safe_splice): Remove.
(safe_push): Remove.
(safe_grow): Remove.
(safe_grow_cleared): Remove.
(safe_insert): Remove.
(DEF_VEC_I): Remove.
(DEF_VEC_ALLOC_I): Remove.
(DEF_VEC_P): Remove.
(DEF_VEC_ALLOC_P): Remove.
(DEF_VEC_O): Remove.
(DEF_VEC_ALLOC_O): Remove.
(DEF_VEC_ALLOC_P_STACK): Remove.
(DEF_VEC_ALLOC_O_STACK): Remove.
(DEF_VEC_ALLOC_I_STACK): Remove.
(DEF_VEC_A): Remove.
(DEF_VEC_ALLOC_A): Remove.
(vec_stack_p_reserve_exact_1): Remove.
(vec_stack_o_reserve): Remove.
(vec_stack_o_reserve_exact): Remove.
(VEC_length): Remove.
(VEC_empty): Remove.
(VEC_address): Remove.
(vec_address): Remove.
(VEC_last): Remove.
(VEC_index): Remove.
(VEC_iterate): Remove.
(VEC_embedded_size): Remove.
(VEC_embedded_init): Remove.
(VEC_free): Remove.
(VEC_copy): Remove.
(VEC_space): Remove.
(VEC_reserve): Remove.
(VEC_reserve_exact): Remove.
(VEC_splice): Remove.
(VEC_safe_splice): Remove.
(VEC_quick_push): Remove.
(VEC_safe_push): Remove.
(VEC_pop): Remove.
(VEC_truncate): Remove.
(VEC_safe_grow): Remove.
(VEC_replace): Remove.
(VEC_quick_insert): Remove.
(VEC_safe_insert): Remove.
(VEC_ordered_remove): Remove.
(VEC_unordered_remove): Remove.
(VEC_block_remove): Remove.
(VEC_lower_bound): Remove.
(VEC_alloc): Remove.
(VEC_qsort): Remove.
(va_heap): Declare.
(va_heap::default_layout): New typedef to vl_ptr.
(va_heap::reserve): New.
(va_heap::release): New.
(va_gc): Declare.
(va_gc::default_layout): New typedef to vl_embed.
(va_gc::reserve): New.
(va_gc::release): New.
(va_gc_atomic): Declare. Inherit from va_gc.
(va_stack): Declare.
(va_stack::default_layout): New typedef to vl_ptr.
(va_stack::alloc): New.
(va_stack::reserve): New.
(va_stack::release): New.
(register_stack_vec): Declare.
(stack_vec_register_index): Declare.
(unregister_stack_vec): Declare.
(vec<T, A = va_heap, L = typename A::default_layout>): Declare
empty vec template.
(vec<T, A, vl_embed>): Partial specialization for embedded
layout.
(vec<T, A, vl_embed>::allocated): New.
(vec<T, A, vl_embed>::length): New.
(vec<T, A, vl_embed>::is_empty): New.
(vec<T, A, vl_embed>::address): New.
(vec<T, A, vl_embed>::operator[]): New.
(vec<T, A, vl_embed>::last New.
(vec<T, A, vl_embed>::space): New.
(vec<T, A, vl_embed>::iterate): New.
(vec<T, A, vl_embed>::iterate): New.
(vec<T, A, vl_embed>::copy): New.
(vec<T, A, vl_embed>::splice): New.
(vec<T, A, vl_embed>::quick_push New.
(vec<T, A, vl_embed>::pop New.
(vec<T, A, vl_embed>::truncate): New.
(vec<T, A, vl_embed>::quick_insert): New.
(vec<T, A, vl_embed>::ordered_remove): New.
(vec<T, A, vl_embed>::unordered_remove): New.
(vec<T, A, vl_embed>::block_remove): New.
(vec<T, A, vl_embed>::qsort): New.
(vec<T, A, vl_embed>::lower_bound): New.
(vec<T, A, vl_embed>::embedded_size): New.
(vec<T, A, vl_embed>::embedded_init): New.
(vec<T, A, vl_embed>::quick_grow): New.
(vec<T, A, vl_embed>::quick_grow_cleared): New.
(vec_safe_space): New.
(vec_safe_length): New.
(vec_safe_address): New.
(vec_safe_is_empty): New.
(vec_safe_reserve): New.
(vec_safe_reserve_exact): New.
(vec_alloc): New.
(vec_free): New.
(vec_safe_grow): New.
(vec_safe_grow_cleared): New.
(vec_safe_iterate): New.
(vec_safe_push): New.
(vec_safe_insert): New.
(vec_safe_truncate): New.
(vec_safe_copy): New.
(vec_safe_splice): New.
(vec<T, A, vl_ptr>): New partial specialization for the space
efficient layout.
(vec<T, A, vl_ptr>::exists): New.
(vec<T, A, vl_ptr>::is_empty): New.
(vec<T, A, vl_ptr>::length): New.
(vec<T, A, vl_ptr>::address): New.
(vec<T, A, vl_ptr>::operator[]): New.
(vec<T, A, vl_ptr>::operator!=): New.
(vec<T, A, vl_ptr>::operator==): New.
(vec<T, A, vl_ptr>::last): New.
(vec<T, A, vl_ptr>::space): New.
(vec<T, A, vl_ptr>::iterate): New.
(vec<T, A, vl_ptr>::copy): New.
(vec<T, A, vl_ptr>::reserve): New.
(vec<T, A, vl_ptr>::reserve_exact): New.
(vec<T, A, vl_ptr>::splice): New.
(vec<T, A, vl_ptr>::safe_splice): New.
(vec<T, A, vl_ptr>::quick_push): New.
(vec<T, A, vl_ptr>::safe_push): New.
(vec<T, A, vl_ptr>::pop): New.
(vec<T, A, vl_ptr>::truncate): New.
(vec<T, A, vl_ptr>::safe_grow): New.
(vec<T, A, vl_ptr>::safe_grow_cleared): New.
(vec<T, A, vl_ptr>::quick_grow): New.
(vec<T, A, vl_ptr>::quick_grow_cleared): New.
(vec<T, A, vl_ptr>::quick_insert): New.
(vec<T, A, vl_ptr>::safe_insert): New.
(vec<T, A, vl_ptr>::ordered_remove): New.
(vec<T, A, vl_ptr>::unordered_remove): New.
(vec<T, A, vl_ptr>::block_remove): New.
(vec<T, A, vl_ptr>::qsort): New.
(vec<T, A, vl_ptr>::lower_bound): New.
(vec_stack_alloc): Define.
(FOR_EACH_VEC_SAFE_ELT): Define.
* vecir.h: Remove. Update all users.
* vecprim.h: Remove. Update all users.
Move uchar to coretypes.h.
* Makefile.in (VEC_H): Add $(GGC_H).
Remove vecir.h and vecprim.h dependencies everywhere.
2012-11-16 Diego Novillo <dnovillo@google.com>
* gengtype-lex.l (VEC): Remove.
Add characters in the set [\!\>\.-].
* gengtype-parse.c (token_names): Remove "VEC".
(require_template_declaration): Remove handling of VEC_TOKEN.
(type): Likewise.
Call create_user_defined_type when parsing GTY((user)).
* gengtype-state.c (type_lineloc): handle TYPE_UNDEFINED.
(write_state_undefined_type): New.
(write_state_type): Call write_state_undefined_type for
TYPE_UNDEFINED.
(read_state_type): Call read_state_undefined_type for
TYPE_UNDEFINED.
* gengtype.c (dbgprint_count_type_at): Handle TYPE_UNDEFINED.
(create_user_defined_type): Make extern.
(type_for_name): Factor out of resolve_typedef.
(create_undefined_type): New
(resolve_typedef): Call it when we cannot find a previous
typedef and the type is not a template.
(find_structure): Accept TYPE_UNDEFINED.
(set_gc_used_type): Add argument ALLOWED_UNDEFINED_TYPES,
default to false.
Emit an error for TYPE_UNDEFINED unless LEVEL is GC_UNUSED or
ALLOWED_UNDEFINED_TYPES is set.
Set ALLOWED_UNDEFINED_TYPES to true for TYPE_USER_STRUCT.
(filter_type_name): Accept templates with more than one
argument.
(output_mangled_typename): Handle TYPE_UNDEFINED
(walk_type): Likewise.
(write_types_process_field): Likewise.
(write_func_for_structure): If CHAIN_NEXT is set, ORIG_S
should not be a user-defined type.
(write_types_local_user_process_field): Handle TYPE_ARRAY,
TYPE_NONE and TYPE_UNDEFINED.
(write_types_local_process_field): Likewise.
(contains_scalar_p): Return 0 for TYPE_USER_STRUCT.
(write_root): Reject user-defined types that are not pointers.
Handle TYPE_NONE, TYPE_UNDEFINED, TYPE_UNION, TYPE_LANG_STRUCT
and TYPE_PARAM_STRUCT.
(output_typename): Handle TYPE_NONE, TYPE_UNDEFINED, and
TYPE_ARRAY.
(dump_typekind): Handle TYPE_UNDEFINED.
* gengtype.h (enum typekind): Add TYPE_UNDEFINED.
(create_user_defined_type): Declare.
(enum gty_token): Remove VEC_TOKEN.
2012-11-16 Diego Novillo <dnovillo@google.com>
Adjust for new vec API (http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec)
* coretypes.h (uchar): Define.
* alias.c: Use new vec API in vec.h.
* asan.c: Likewise.
* attribs.c: Likewise.
* basic-block.h: Likewise.
* bb-reorder.c: Likewise.
* builtins.c: Likewise.
* calls.c: Likewise.
* cfg.c: Likewise.
* cfganal.c: Likewise.
* cfgcleanup.c: Likewise.
* cfgexpand.c: Likewise.
* cfghooks.c: Likewise.
* cfghooks.h: Likewise.
* cfgloop.c: Likewise.
* cfgloop.h: Likewise.
* cfgloopanal.c: Likewise.
* cfgloopmanip.c: Likewise.
* cfgrtl.c: Likewise.
* cgraph.c: Likewise.
* cgraph.h: Likewise.
* cgraphclones.c: Likewise.
* cgraphunit.c: Likewise.
* combine.c: Likewise.
* compare-elim.c: Likewise.
* coverage.c: Likewise.
* cprop.c: Likewise.
* data-streamer.h: Likewise.
* dbxout.c: Likewise.
* dce.c: Likewise.
* df-core.c: Likewise.
* df-problems.c: Likewise.
* df-scan.c: Likewise.
* dominance.c: Likewise.
* domwalk.c: Likewise.
* domwalk.h: Likewise.
* dse.c: Likewise.
* dwarf2cfi.c: Likewise.
* dwarf2out.c: Likewise.
* dwarf2out.h: Likewise.
* emit-rtl.c: Likewise.
* except.c: Likewise.
* except.h: Likewise.
* expr.c: Likewise.
* expr.h: Likewise.
* final.c: Likewise.
* fold-const.c: Likewise.
* function.c: Likewise.
* function.h: Likewise.
* fwprop.c: Likewise.
* gcc.c: Likewise.
* gcse.c: Likewise.
* genattr.c: Likewise.
* genattrtab.c: Likewise.
* genautomata.c: Likewise.
* genextract.c: Likewise.
* genopinit.c: Likewise
* ggc-common.c: Likewise.
* ggc.h: Likewise.
* gimple-low.c: Likewise.
* gimple-ssa-strength-reduction.c: Likewise.
* gimple-streamer-in.c: Likewise.
* gimple.c: Likewise.
* gimple.h: Likewise.
* gimplify.c: Likewise.
* graph.c: Likewise.
* graphds.c: Likewise.
* graphds.h: Likewise.
* graphite-blocking.c: Likewise.
* graphite-clast-to-gimple.c: Likewise.
* graphite-dependences.c: Likewise.
* graphite-interchange.c: Likewise.
* graphite-optimize-isl.c: Likewise.
* graphite-poly.c: Likewise.
* graphite-poly.h: Likewise.
* graphite-scop-detection.c: Likewise.
* graphite-scop-detection.h: Likewise.
* graphite-sese-to-poly.c: Likewise.
* graphite.c: Likewise.
* godump.c: Likewise.
* haifa-sched.c: Likewise.
* hw-doloop.c: Likewise.
* hw-doloop.h: Likewise.
* ifcvt.c: Likewise.
* insn-addr.h: Likewise.
* ipa-cp.c: Likewise.
* ipa-inline-analysis.c: Likewise.
* ipa-inline-transform.c: Likewise.
* ipa-inline.c: Likewise.
* ipa-inline.h: Likewise.
* ipa-prop.c: Likewise.
* ipa-prop.h: Likewise.
* ipa-pure-const.c: Likewise.
* ipa-ref-inline.h: Likewise.
* ipa-ref.c: Likewise.
* ipa-ref.h: Likewise.
* ipa-reference.c: Likewise.
* ipa-split.c: Likewise.
* ipa-utils.c: Likewise.
* ipa-utils.h: Likewise.
* ipa.c: Likewise.
* ira-build.c: Likewise.
* ira-color.c: Likewise.
* ira-emit.c: Likewise.
* ira-int.h: Likewise.
* ira.c: Likewise.
* loop-invariant.c: Likewise.
* loop-unroll.c: Likewise.
* lower-subreg.c: Likewise.
* lra-lives.c: Likewise.
* lra.c: Likewise.
* lto-cgraph.c: Likewise.
* lto-section-out.c: Likewise.
* lto-streamer-in.c: Likewise.
* lto-streamer-out.c: Likewise.
* lto-streamer.h: Likewise.
* lto-symtab.c: Likewise.
* mcf.c: Likewise.
* modulo-sched.c: Likewise.
* omp-low.c: Likewise.
* opts-common.c: Likewise.
* opts-global.c: Likewise.
* opts.c: Likewise.
* opts.h: Likewise.
* passes.c: Likewise.
* predict.c: Likewise.
* print-tree.c: Likewise.
* profile.c: Likewise.
* profile.h: Likewise.
* read-rtl.c: Likewise.
* ree.c: Likewise.
* reg-stack.c: Likewise.
* regrename.c: Likewise.
* regrename.h: Likewise.
* reload.c: Likewise.
* reload.h: Likewise.
* reload1.c: Likewise.
* rtl.h: Likewise.
* sched-deps.c: Likewise.
* sched-int.h: Likewise.
* sdbout.c: Likewise.
* sel-sched-dump.c: Likewise.
* sel-sched-ir.c: Likewise.
* sel-sched-ir.h: Likewise.
* sel-sched.c: Likewise.
* sese.c: Likewise.
* sese.h: Likewise.
* statistics.h: Likewise.
* stmt.c: Likewise.
* stor-layout.c: Likewise.
* store-motion.c: Likewise.
* tlink.c: Likewise.
* toplev.c: Likewise.
* trans-mem.c: Likewise.
* tree-browser.c: Likewise.
* tree-call-cdce.c: Likewise.
* tree-cfg.c: Likewise.
* tree-cfgcleanup.c: Likewise.
* tree-chrec.c: Likewise.
* tree-chrec.h: Likewise.
* tree-complex.c: Likewise.
* tree-data-ref.c: Likewise.
* tree-data-ref.h: Likewise.
* tree-dfa.c: Likewise.
* tree-diagnostic.c: Likewise.
* tree-dump.c: Likewise.
* tree-eh.c: Likewise.
* tree-emutls.c: Likewise.
* tree-flow.h: Likewise.
* tree-if-conv.c: Likewise.
* tree-inline.c: Likewise.
* tree-inline.h: Likewise.
* tree-into-ssa.c: Likewise.
* tree-iterator.c: Likewise.
* tree-loop-distribution.c: Likewise.
* tree-mudflap.c: Likewise.
* tree-optimize.c: Likewise.
* tree-outof-ssa.c: Likewise.
* tree-parloops.c: Likewise.
* tree-phinodes.c: Likewise.
* tree-predcom.c: Likewise.
* tree-pretty-print.c: Likewise.
* tree-scalar-evolution.c: Likewise.
* tree-sra.c: Likewise.
* tree-ssa-address.c: Likewise.
* tree-ssa-alias.c: Likewise.
* tree-ssa-ccp.c: Likewise.
* tree-ssa-coalesce.c: Likewise.
* tree-ssa-dce.c: Likewise.
* tree-ssa-dom.c: Likewise.
* tree-ssa-forwprop.c: Likewise.
* tree-ssa-live.c: Likewise.
* tree-ssa-live.h: Likewise.
* tree-ssa-loop-im.c: Likewise.
* tree-ssa-loop-ivcanon.c: Likewise.
* tree-ssa-loop-ivopts.c: Likewise.
* tree-ssa-loop-manip.c: Likewise.
* tree-ssa-loop-niter.c: Likewise.
* tree-ssa-loop-prefetch.c: Likewise.
* tree-ssa-math-opts.c: Likewise.
* tree-ssa-operands.c: Likewise.
* tree-ssa-phiopt.c: Likewise.
* tree-ssa-phiprop.c: Likewise.
* tree-ssa-pre.c: Likewise.
* tree-ssa-propagate.c: Likewise.
* tree-ssa-reassoc.c: Likewise.
* tree-ssa-sccvn.c: Likewise.
* tree-ssa-sccvn.h: Likewise.
* tree-ssa-strlen.c: Likewise.
* tree-ssa-structalias.c: Likewise.
* tree-ssa-tail-merge.c: Likewise.
* tree-ssa-threadedge.c: Likewise.
* tree-ssa-threadupdate.c: Likewise.
* tree-ssa-uncprop.c: Likewise.
* tree-ssa-uninit.c: Likewise.
* tree-ssa.c: Likewise.
* tree-ssanames.c: Likewise.
* tree-stdarg.c: Likewise.
* tree-streamer-in.c: Likewise.
* tree-streamer-out.c: Likewise.
* tree-streamer.c: Likewise.
* tree-streamer.h: Likewise.
* tree-switch-conversion.c: Likewise.
* tree-vect-data-refs.c: Likewise.
* tree-vect-generic.c: Likewise.
* tree-vect-loop-manip.c: Likewise.
* tree-vect-loop.c: Likewise.
* tree-vect-patterns.c: Likewise.
* tree-vect-slp.c: Likewise.
* tree-vect-stmts.c: Likewise.
* tree-vectorizer.c: Likewise.
* tree-vectorizer.h: Likewise.
* tree-vrp.c: Likewise.
* tree.c: Likewise.
* tree.h: Likewise.
* value-prof.c: Likewise.
* value-prof.h: Likewise.
* var-tracking.c: Likewise.
* varasm.c: Likewise.
* varpool.c: Likewise.
* vmsdbgout.c: Likewise.
* config/bfin/bfin.c: Likewise.
* config/c6x/c6x.c: Likewise.
* config/darwin.c: Likewise.
* config/i386/i386.c: Likewise.
* config/ia64/ia64.c: Likewise.
* config/mep/mep.c: Likewise.
* config/mips/mips.c: Likewise.
* config/pa/pa.c: Likewise.
* config/rs6000/rs6000-c.c: Likewise.
* config/rs6000/rs6000.c: Likewise.
* config/rx/rx.c: Likewise.
* config/spu/spu-c.c: Likewise.
* config/vms/vms.c: Likewise.
* config/vxworks.c: Likewise.
* config/epiphany/resolve-sw-modes.c: Likewise.
From-SVN: r193595
2012-11-18 03:54:30 +01:00
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c->cand_num = cand_vec.length () + 1;
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2012-06-26 18:27:50 +02:00
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c->next_interp = 0;
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c->dependent = 0;
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c->sibling = 0;
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2013-05-08 14:22:32 +02:00
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c->def_phi = kind == CAND_MULT ? find_phi_def (base) : 0;
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2012-06-26 18:27:50 +02:00
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c->dead_savings = savings;
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This patch rewrites the old VEC macro-based interface into a new one based on the template class 'vec'.
This patch rewrites the old VEC macro-based interface into a new one
based on the template class 'vec'. The user-visible changes are
described in http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec.
I have tested the patch pretty extensively:
- Regular bootstraps on x86_64, ppc, ia64, sparc and hppa.
- Bootstraps with --enable-checking=release
- Bootstraps with --enable-checking=gc,gcac
- Basic builds on all targets (using contrib/config-list.mk).
We no longer access the vectors via VEC_* macros. The pattern is
"VEC_operation (T, A, V, args)" becomes "V.operation (args)".
The only thing I could not do is create proper ctors and dtors for the
vec class. Since these vectors are stored in unions, we
have to keep them as PODs (C++03 does not allow non-PODs in unions).
This means that creation and destruction must be explicit. There is a
new method vec<type, allocation, layout>::create() and another vec<type,
allocation, layout>::destroy() to allocate the internal vector.
For vectors that must be pointers, there is a family of free functions
that implement the operations that need to tolerate NULL vectors.
These functions all start with the prefix 'vec_safe_'. See the wiki
page for details.
The gengtype change removes the special handling for VEC() that used
to exist in gengtype. Additionally, it allows gengtype to recognize
templates of more than one argument and introduces the concept of an
undefined type (useful for template arguments that may or may not be
types).
When a TYPE_UNDEFINED is reached, gengtype will ignore it if it
happens inside a type marked with GTY((user)). Otherwise, it will
emit an error.
Finally, gengtype rejects root types marked GTY((user)) that are not
first class pointers.
2012-11-16 Diego Novillo <dnovillo@google.com>
VEC API overhaul (http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec)
* vec.c (register_overhead): Convert it into
member function of vec_prefix.
(release_overhead): Likewise.
(calculate_allocation): Likewise.
(vec_heap_free): Remove.
(vec_gc_o_reserve_1): Remove.
(vec_heap_o_reserve_1): Remove.
(vec_stack_o_reserve_1): Remove.
(vec_stack_o_reserve_exact): Remove.
(register_stack_vec): New.
(stack_vec_register_index): New.
(unregister_stack_vec): New.
(vec_assert_fail): Remove.
* vec.h: Conditionally include ggc.h. Document conditional
hackery.
Update top-level documentation.
(ALONE_VEC_CHECK_INFO): Remove.
(VEC_CHECK_INFO): Remove.
(ALONE_VEC_CHECK_DECL): Remove.
(VEC_CHECK_DECL): Remove.
(ALONE_VEC_CHECK_PASS): Remove.
(VEC_CHECK_PASS): Remove.
(VEC_ASSERT): Remove.
(vec_prefix): Add friends va_gc, va_gc_atomic, va_heap and
va_stack.
Mark fields alloc_ and num_ as protected.
(struct vec_t): Remove. Remove all function members.
(struct vl_embed): Declare.
(struct vl_ptr): Declare.
(free): Remove.
(reserve_exact): Remove.
(reserve): Remove.
(safe_splice): Remove.
(safe_push): Remove.
(safe_grow): Remove.
(safe_grow_cleared): Remove.
(safe_insert): Remove.
(DEF_VEC_I): Remove.
(DEF_VEC_ALLOC_I): Remove.
(DEF_VEC_P): Remove.
(DEF_VEC_ALLOC_P): Remove.
(DEF_VEC_O): Remove.
(DEF_VEC_ALLOC_O): Remove.
(DEF_VEC_ALLOC_P_STACK): Remove.
(DEF_VEC_ALLOC_O_STACK): Remove.
(DEF_VEC_ALLOC_I_STACK): Remove.
(DEF_VEC_A): Remove.
(DEF_VEC_ALLOC_A): Remove.
(vec_stack_p_reserve_exact_1): Remove.
(vec_stack_o_reserve): Remove.
(vec_stack_o_reserve_exact): Remove.
(VEC_length): Remove.
(VEC_empty): Remove.
(VEC_address): Remove.
(vec_address): Remove.
(VEC_last): Remove.
(VEC_index): Remove.
(VEC_iterate): Remove.
(VEC_embedded_size): Remove.
(VEC_embedded_init): Remove.
(VEC_free): Remove.
(VEC_copy): Remove.
(VEC_space): Remove.
(VEC_reserve): Remove.
(VEC_reserve_exact): Remove.
(VEC_splice): Remove.
(VEC_safe_splice): Remove.
(VEC_quick_push): Remove.
(VEC_safe_push): Remove.
(VEC_pop): Remove.
(VEC_truncate): Remove.
(VEC_safe_grow): Remove.
(VEC_replace): Remove.
(VEC_quick_insert): Remove.
(VEC_safe_insert): Remove.
(VEC_ordered_remove): Remove.
(VEC_unordered_remove): Remove.
(VEC_block_remove): Remove.
(VEC_lower_bound): Remove.
(VEC_alloc): Remove.
(VEC_qsort): Remove.
(va_heap): Declare.
(va_heap::default_layout): New typedef to vl_ptr.
(va_heap::reserve): New.
(va_heap::release): New.
(va_gc): Declare.
(va_gc::default_layout): New typedef to vl_embed.
(va_gc::reserve): New.
(va_gc::release): New.
(va_gc_atomic): Declare. Inherit from va_gc.
(va_stack): Declare.
(va_stack::default_layout): New typedef to vl_ptr.
(va_stack::alloc): New.
(va_stack::reserve): New.
(va_stack::release): New.
(register_stack_vec): Declare.
(stack_vec_register_index): Declare.
(unregister_stack_vec): Declare.
(vec<T, A = va_heap, L = typename A::default_layout>): Declare
empty vec template.
(vec<T, A, vl_embed>): Partial specialization for embedded
layout.
(vec<T, A, vl_embed>::allocated): New.
(vec<T, A, vl_embed>::length): New.
(vec<T, A, vl_embed>::is_empty): New.
(vec<T, A, vl_embed>::address): New.
(vec<T, A, vl_embed>::operator[]): New.
(vec<T, A, vl_embed>::last New.
(vec<T, A, vl_embed>::space): New.
(vec<T, A, vl_embed>::iterate): New.
(vec<T, A, vl_embed>::iterate): New.
(vec<T, A, vl_embed>::copy): New.
(vec<T, A, vl_embed>::splice): New.
(vec<T, A, vl_embed>::quick_push New.
(vec<T, A, vl_embed>::pop New.
(vec<T, A, vl_embed>::truncate): New.
(vec<T, A, vl_embed>::quick_insert): New.
(vec<T, A, vl_embed>::ordered_remove): New.
(vec<T, A, vl_embed>::unordered_remove): New.
(vec<T, A, vl_embed>::block_remove): New.
(vec<T, A, vl_embed>::qsort): New.
(vec<T, A, vl_embed>::lower_bound): New.
(vec<T, A, vl_embed>::embedded_size): New.
(vec<T, A, vl_embed>::embedded_init): New.
(vec<T, A, vl_embed>::quick_grow): New.
(vec<T, A, vl_embed>::quick_grow_cleared): New.
(vec_safe_space): New.
(vec_safe_length): New.
(vec_safe_address): New.
(vec_safe_is_empty): New.
(vec_safe_reserve): New.
(vec_safe_reserve_exact): New.
(vec_alloc): New.
(vec_free): New.
(vec_safe_grow): New.
(vec_safe_grow_cleared): New.
(vec_safe_iterate): New.
(vec_safe_push): New.
(vec_safe_insert): New.
(vec_safe_truncate): New.
(vec_safe_copy): New.
(vec_safe_splice): New.
(vec<T, A, vl_ptr>): New partial specialization for the space
efficient layout.
(vec<T, A, vl_ptr>::exists): New.
(vec<T, A, vl_ptr>::is_empty): New.
(vec<T, A, vl_ptr>::length): New.
(vec<T, A, vl_ptr>::address): New.
(vec<T, A, vl_ptr>::operator[]): New.
(vec<T, A, vl_ptr>::operator!=): New.
(vec<T, A, vl_ptr>::operator==): New.
(vec<T, A, vl_ptr>::last): New.
(vec<T, A, vl_ptr>::space): New.
(vec<T, A, vl_ptr>::iterate): New.
(vec<T, A, vl_ptr>::copy): New.
(vec<T, A, vl_ptr>::reserve): New.
(vec<T, A, vl_ptr>::reserve_exact): New.
(vec<T, A, vl_ptr>::splice): New.
(vec<T, A, vl_ptr>::safe_splice): New.
(vec<T, A, vl_ptr>::quick_push): New.
(vec<T, A, vl_ptr>::safe_push): New.
(vec<T, A, vl_ptr>::pop): New.
(vec<T, A, vl_ptr>::truncate): New.
(vec<T, A, vl_ptr>::safe_grow): New.
(vec<T, A, vl_ptr>::safe_grow_cleared): New.
(vec<T, A, vl_ptr>::quick_grow): New.
(vec<T, A, vl_ptr>::quick_grow_cleared): New.
(vec<T, A, vl_ptr>::quick_insert): New.
(vec<T, A, vl_ptr>::safe_insert): New.
(vec<T, A, vl_ptr>::ordered_remove): New.
(vec<T, A, vl_ptr>::unordered_remove): New.
(vec<T, A, vl_ptr>::block_remove): New.
(vec<T, A, vl_ptr>::qsort): New.
(vec<T, A, vl_ptr>::lower_bound): New.
(vec_stack_alloc): Define.
(FOR_EACH_VEC_SAFE_ELT): Define.
* vecir.h: Remove. Update all users.
* vecprim.h: Remove. Update all users.
Move uchar to coretypes.h.
* Makefile.in (VEC_H): Add $(GGC_H).
Remove vecir.h and vecprim.h dependencies everywhere.
2012-11-16 Diego Novillo <dnovillo@google.com>
* gengtype-lex.l (VEC): Remove.
Add characters in the set [\!\>\.-].
* gengtype-parse.c (token_names): Remove "VEC".
(require_template_declaration): Remove handling of VEC_TOKEN.
(type): Likewise.
Call create_user_defined_type when parsing GTY((user)).
* gengtype-state.c (type_lineloc): handle TYPE_UNDEFINED.
(write_state_undefined_type): New.
(write_state_type): Call write_state_undefined_type for
TYPE_UNDEFINED.
(read_state_type): Call read_state_undefined_type for
TYPE_UNDEFINED.
* gengtype.c (dbgprint_count_type_at): Handle TYPE_UNDEFINED.
(create_user_defined_type): Make extern.
(type_for_name): Factor out of resolve_typedef.
(create_undefined_type): New
(resolve_typedef): Call it when we cannot find a previous
typedef and the type is not a template.
(find_structure): Accept TYPE_UNDEFINED.
(set_gc_used_type): Add argument ALLOWED_UNDEFINED_TYPES,
default to false.
Emit an error for TYPE_UNDEFINED unless LEVEL is GC_UNUSED or
ALLOWED_UNDEFINED_TYPES is set.
Set ALLOWED_UNDEFINED_TYPES to true for TYPE_USER_STRUCT.
(filter_type_name): Accept templates with more than one
argument.
(output_mangled_typename): Handle TYPE_UNDEFINED
(walk_type): Likewise.
(write_types_process_field): Likewise.
(write_func_for_structure): If CHAIN_NEXT is set, ORIG_S
should not be a user-defined type.
(write_types_local_user_process_field): Handle TYPE_ARRAY,
TYPE_NONE and TYPE_UNDEFINED.
(write_types_local_process_field): Likewise.
(contains_scalar_p): Return 0 for TYPE_USER_STRUCT.
(write_root): Reject user-defined types that are not pointers.
Handle TYPE_NONE, TYPE_UNDEFINED, TYPE_UNION, TYPE_LANG_STRUCT
and TYPE_PARAM_STRUCT.
(output_typename): Handle TYPE_NONE, TYPE_UNDEFINED, and
TYPE_ARRAY.
(dump_typekind): Handle TYPE_UNDEFINED.
* gengtype.h (enum typekind): Add TYPE_UNDEFINED.
(create_user_defined_type): Declare.
(enum gty_token): Remove VEC_TOKEN.
2012-11-16 Diego Novillo <dnovillo@google.com>
Adjust for new vec API (http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec)
* coretypes.h (uchar): Define.
* alias.c: Use new vec API in vec.h.
* asan.c: Likewise.
* attribs.c: Likewise.
* basic-block.h: Likewise.
* bb-reorder.c: Likewise.
* builtins.c: Likewise.
* calls.c: Likewise.
* cfg.c: Likewise.
* cfganal.c: Likewise.
* cfgcleanup.c: Likewise.
* cfgexpand.c: Likewise.
* cfghooks.c: Likewise.
* cfghooks.h: Likewise.
* cfgloop.c: Likewise.
* cfgloop.h: Likewise.
* cfgloopanal.c: Likewise.
* cfgloopmanip.c: Likewise.
* cfgrtl.c: Likewise.
* cgraph.c: Likewise.
* cgraph.h: Likewise.
* cgraphclones.c: Likewise.
* cgraphunit.c: Likewise.
* combine.c: Likewise.
* compare-elim.c: Likewise.
* coverage.c: Likewise.
* cprop.c: Likewise.
* data-streamer.h: Likewise.
* dbxout.c: Likewise.
* dce.c: Likewise.
* df-core.c: Likewise.
* df-problems.c: Likewise.
* df-scan.c: Likewise.
* dominance.c: Likewise.
* domwalk.c: Likewise.
* domwalk.h: Likewise.
* dse.c: Likewise.
* dwarf2cfi.c: Likewise.
* dwarf2out.c: Likewise.
* dwarf2out.h: Likewise.
* emit-rtl.c: Likewise.
* except.c: Likewise.
* except.h: Likewise.
* expr.c: Likewise.
* expr.h: Likewise.
* final.c: Likewise.
* fold-const.c: Likewise.
* function.c: Likewise.
* function.h: Likewise.
* fwprop.c: Likewise.
* gcc.c: Likewise.
* gcse.c: Likewise.
* genattr.c: Likewise.
* genattrtab.c: Likewise.
* genautomata.c: Likewise.
* genextract.c: Likewise.
* genopinit.c: Likewise
* ggc-common.c: Likewise.
* ggc.h: Likewise.
* gimple-low.c: Likewise.
* gimple-ssa-strength-reduction.c: Likewise.
* gimple-streamer-in.c: Likewise.
* gimple.c: Likewise.
* gimple.h: Likewise.
* gimplify.c: Likewise.
* graph.c: Likewise.
* graphds.c: Likewise.
* graphds.h: Likewise.
* graphite-blocking.c: Likewise.
* graphite-clast-to-gimple.c: Likewise.
* graphite-dependences.c: Likewise.
* graphite-interchange.c: Likewise.
* graphite-optimize-isl.c: Likewise.
* graphite-poly.c: Likewise.
* graphite-poly.h: Likewise.
* graphite-scop-detection.c: Likewise.
* graphite-scop-detection.h: Likewise.
* graphite-sese-to-poly.c: Likewise.
* graphite.c: Likewise.
* godump.c: Likewise.
* haifa-sched.c: Likewise.
* hw-doloop.c: Likewise.
* hw-doloop.h: Likewise.
* ifcvt.c: Likewise.
* insn-addr.h: Likewise.
* ipa-cp.c: Likewise.
* ipa-inline-analysis.c: Likewise.
* ipa-inline-transform.c: Likewise.
* ipa-inline.c: Likewise.
* ipa-inline.h: Likewise.
* ipa-prop.c: Likewise.
* ipa-prop.h: Likewise.
* ipa-pure-const.c: Likewise.
* ipa-ref-inline.h: Likewise.
* ipa-ref.c: Likewise.
* ipa-ref.h: Likewise.
* ipa-reference.c: Likewise.
* ipa-split.c: Likewise.
* ipa-utils.c: Likewise.
* ipa-utils.h: Likewise.
* ipa.c: Likewise.
* ira-build.c: Likewise.
* ira-color.c: Likewise.
* ira-emit.c: Likewise.
* ira-int.h: Likewise.
* ira.c: Likewise.
* loop-invariant.c: Likewise.
* loop-unroll.c: Likewise.
* lower-subreg.c: Likewise.
* lra-lives.c: Likewise.
* lra.c: Likewise.
* lto-cgraph.c: Likewise.
* lto-section-out.c: Likewise.
* lto-streamer-in.c: Likewise.
* lto-streamer-out.c: Likewise.
* lto-streamer.h: Likewise.
* lto-symtab.c: Likewise.
* mcf.c: Likewise.
* modulo-sched.c: Likewise.
* omp-low.c: Likewise.
* opts-common.c: Likewise.
* opts-global.c: Likewise.
* opts.c: Likewise.
* opts.h: Likewise.
* passes.c: Likewise.
* predict.c: Likewise.
* print-tree.c: Likewise.
* profile.c: Likewise.
* profile.h: Likewise.
* read-rtl.c: Likewise.
* ree.c: Likewise.
* reg-stack.c: Likewise.
* regrename.c: Likewise.
* regrename.h: Likewise.
* reload.c: Likewise.
* reload.h: Likewise.
* reload1.c: Likewise.
* rtl.h: Likewise.
* sched-deps.c: Likewise.
* sched-int.h: Likewise.
* sdbout.c: Likewise.
* sel-sched-dump.c: Likewise.
* sel-sched-ir.c: Likewise.
* sel-sched-ir.h: Likewise.
* sel-sched.c: Likewise.
* sese.c: Likewise.
* sese.h: Likewise.
* statistics.h: Likewise.
* stmt.c: Likewise.
* stor-layout.c: Likewise.
* store-motion.c: Likewise.
* tlink.c: Likewise.
* toplev.c: Likewise.
* trans-mem.c: Likewise.
* tree-browser.c: Likewise.
* tree-call-cdce.c: Likewise.
* tree-cfg.c: Likewise.
* tree-cfgcleanup.c: Likewise.
* tree-chrec.c: Likewise.
* tree-chrec.h: Likewise.
* tree-complex.c: Likewise.
* tree-data-ref.c: Likewise.
* tree-data-ref.h: Likewise.
* tree-dfa.c: Likewise.
* tree-diagnostic.c: Likewise.
* tree-dump.c: Likewise.
* tree-eh.c: Likewise.
* tree-emutls.c: Likewise.
* tree-flow.h: Likewise.
* tree-if-conv.c: Likewise.
* tree-inline.c: Likewise.
* tree-inline.h: Likewise.
* tree-into-ssa.c: Likewise.
* tree-iterator.c: Likewise.
* tree-loop-distribution.c: Likewise.
* tree-mudflap.c: Likewise.
* tree-optimize.c: Likewise.
* tree-outof-ssa.c: Likewise.
* tree-parloops.c: Likewise.
* tree-phinodes.c: Likewise.
* tree-predcom.c: Likewise.
* tree-pretty-print.c: Likewise.
* tree-scalar-evolution.c: Likewise.
* tree-sra.c: Likewise.
* tree-ssa-address.c: Likewise.
* tree-ssa-alias.c: Likewise.
* tree-ssa-ccp.c: Likewise.
* tree-ssa-coalesce.c: Likewise.
* tree-ssa-dce.c: Likewise.
* tree-ssa-dom.c: Likewise.
* tree-ssa-forwprop.c: Likewise.
* tree-ssa-live.c: Likewise.
* tree-ssa-live.h: Likewise.
* tree-ssa-loop-im.c: Likewise.
* tree-ssa-loop-ivcanon.c: Likewise.
* tree-ssa-loop-ivopts.c: Likewise.
* tree-ssa-loop-manip.c: Likewise.
* tree-ssa-loop-niter.c: Likewise.
* tree-ssa-loop-prefetch.c: Likewise.
* tree-ssa-math-opts.c: Likewise.
* tree-ssa-operands.c: Likewise.
* tree-ssa-phiopt.c: Likewise.
* tree-ssa-phiprop.c: Likewise.
* tree-ssa-pre.c: Likewise.
* tree-ssa-propagate.c: Likewise.
* tree-ssa-reassoc.c: Likewise.
* tree-ssa-sccvn.c: Likewise.
* tree-ssa-sccvn.h: Likewise.
* tree-ssa-strlen.c: Likewise.
* tree-ssa-structalias.c: Likewise.
* tree-ssa-tail-merge.c: Likewise.
* tree-ssa-threadedge.c: Likewise.
* tree-ssa-threadupdate.c: Likewise.
* tree-ssa-uncprop.c: Likewise.
* tree-ssa-uninit.c: Likewise.
* tree-ssa.c: Likewise.
* tree-ssanames.c: Likewise.
* tree-stdarg.c: Likewise.
* tree-streamer-in.c: Likewise.
* tree-streamer-out.c: Likewise.
* tree-streamer.c: Likewise.
* tree-streamer.h: Likewise.
* tree-switch-conversion.c: Likewise.
* tree-vect-data-refs.c: Likewise.
* tree-vect-generic.c: Likewise.
* tree-vect-loop-manip.c: Likewise.
* tree-vect-loop.c: Likewise.
* tree-vect-patterns.c: Likewise.
* tree-vect-slp.c: Likewise.
* tree-vect-stmts.c: Likewise.
* tree-vectorizer.c: Likewise.
* tree-vectorizer.h: Likewise.
* tree-vrp.c: Likewise.
* tree.c: Likewise.
* tree.h: Likewise.
* value-prof.c: Likewise.
* value-prof.h: Likewise.
* var-tracking.c: Likewise.
* varasm.c: Likewise.
* varpool.c: Likewise.
* vmsdbgout.c: Likewise.
* config/bfin/bfin.c: Likewise.
* config/c6x/c6x.c: Likewise.
* config/darwin.c: Likewise.
* config/i386/i386.c: Likewise.
* config/ia64/ia64.c: Likewise.
* config/mep/mep.c: Likewise.
* config/mips/mips.c: Likewise.
* config/pa/pa.c: Likewise.
* config/rs6000/rs6000-c.c: Likewise.
* config/rs6000/rs6000.c: Likewise.
* config/rx/rx.c: Likewise.
* config/spu/spu-c.c: Likewise.
* config/vms/vms.c: Likewise.
* config/vxworks.c: Likewise.
* config/epiphany/resolve-sw-modes.c: Likewise.
From-SVN: r193595
2012-11-18 03:54:30 +01:00
|
|
|
|
cand_vec.safe_push (c);
|
2013-05-03 20:56:39 +02:00
|
|
|
|
|
|
|
|
|
if (kind == CAND_PHI)
|
|
|
|
|
c->basis = 0;
|
|
|
|
|
else
|
|
|
|
|
c->basis = find_basis_for_candidate (c);
|
|
|
|
|
|
2012-06-26 18:27:50 +02:00
|
|
|
|
record_potential_basis (c);
|
|
|
|
|
|
|
|
|
|
return c;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Determine the target cost of statement GS when compiling according
|
|
|
|
|
to SPEED. */
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
stmt_cost (gimple gs, bool speed)
|
|
|
|
|
{
|
|
|
|
|
tree lhs, rhs1, rhs2;
|
|
|
|
|
enum machine_mode lhs_mode;
|
|
|
|
|
|
|
|
|
|
gcc_assert (is_gimple_assign (gs));
|
|
|
|
|
lhs = gimple_assign_lhs (gs);
|
|
|
|
|
rhs1 = gimple_assign_rhs1 (gs);
|
|
|
|
|
lhs_mode = TYPE_MODE (TREE_TYPE (lhs));
|
|
|
|
|
|
|
|
|
|
switch (gimple_assign_rhs_code (gs))
|
|
|
|
|
{
|
|
|
|
|
case MULT_EXPR:
|
|
|
|
|
rhs2 = gimple_assign_rhs2 (gs);
|
|
|
|
|
|
|
|
|
|
if (host_integerp (rhs2, 0))
|
2012-07-26 15:10:04 +02:00
|
|
|
|
return mult_by_coeff_cost (TREE_INT_CST_LOW (rhs2), lhs_mode, speed);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
|
|
|
|
gcc_assert (TREE_CODE (rhs1) != INTEGER_CST);
|
expmed.h (alg_hash, [...]): Delete macro definitions and re-purpose as inline functions.
* expmed.h (alg_hash, alg_hash_used_p, sdiv_pow2_cheap,
smod_pow2_cheap, zero_cost, add_cost, neg_cost, shift_cost)
shiftadd_cost, shiftsub0_cost, shiftsub1_cost, mul_cost,
sdiv_cost, udiv_cost, mul_widen_cost, mul_highpart_cost): Delete
macro definitions and re-purpose as inline functions.
(alg_hash_entry_ptr, set_alg_hash_used_p, sdiv_pow2_cheap_ptr,
set_sdiv_pow2_cheap, smod_pow2_cheap_ptr, set_smod_pow2_cheap,
zero_cost_ptr, set_zero_cost, add_cost_ptr, set_add_cost,
neg_cost_ptr, set_neg_cost, shift_cost_ptr, set_shift_cost,
shiftadd_cost_ptr, set_shiftadd_cost, shiftsub0_cost_ptr,
set_shiftsub0_cost, shiftsub1_cost_ptr, set_shiftsub1_cost,
mul_cost_ptr, set_mul_cost, sdiv_cost_ptr, set_sdiv_cost,
udiv_cost_ptr, set_udiv_cost, mul_widen_cost_ptr,
set_mul_widen_cost, mul_highpart_cost_ptr, set_mul_highpart_cost):
New functions.
(convert_cost_ptr): New function, split out from...
(set_convert_cost, convert_cost): ...here.
* expmed.c, tree-ssa-loop-ivopts.c: Update for new functions.
* gimple-ssa-strength-reduction.c: Likewise.
From-SVN: r189919
2012-07-27 23:01:16 +02:00
|
|
|
|
return mul_cost (speed, lhs_mode);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
|
|
|
|
case PLUS_EXPR:
|
|
|
|
|
case POINTER_PLUS_EXPR:
|
|
|
|
|
case MINUS_EXPR:
|
expmed.h (alg_hash, [...]): Delete macro definitions and re-purpose as inline functions.
* expmed.h (alg_hash, alg_hash_used_p, sdiv_pow2_cheap,
smod_pow2_cheap, zero_cost, add_cost, neg_cost, shift_cost)
shiftadd_cost, shiftsub0_cost, shiftsub1_cost, mul_cost,
sdiv_cost, udiv_cost, mul_widen_cost, mul_highpart_cost): Delete
macro definitions and re-purpose as inline functions.
(alg_hash_entry_ptr, set_alg_hash_used_p, sdiv_pow2_cheap_ptr,
set_sdiv_pow2_cheap, smod_pow2_cheap_ptr, set_smod_pow2_cheap,
zero_cost_ptr, set_zero_cost, add_cost_ptr, set_add_cost,
neg_cost_ptr, set_neg_cost, shift_cost_ptr, set_shift_cost,
shiftadd_cost_ptr, set_shiftadd_cost, shiftsub0_cost_ptr,
set_shiftsub0_cost, shiftsub1_cost_ptr, set_shiftsub1_cost,
mul_cost_ptr, set_mul_cost, sdiv_cost_ptr, set_sdiv_cost,
udiv_cost_ptr, set_udiv_cost, mul_widen_cost_ptr,
set_mul_widen_cost, mul_highpart_cost_ptr, set_mul_highpart_cost):
New functions.
(convert_cost_ptr): New function, split out from...
(set_convert_cost, convert_cost): ...here.
* expmed.c, tree-ssa-loop-ivopts.c: Update for new functions.
* gimple-ssa-strength-reduction.c: Likewise.
From-SVN: r189919
2012-07-27 23:01:16 +02:00
|
|
|
|
return add_cost (speed, lhs_mode);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
|
|
|
|
case NEGATE_EXPR:
|
expmed.h (alg_hash, [...]): Delete macro definitions and re-purpose as inline functions.
* expmed.h (alg_hash, alg_hash_used_p, sdiv_pow2_cheap,
smod_pow2_cheap, zero_cost, add_cost, neg_cost, shift_cost)
shiftadd_cost, shiftsub0_cost, shiftsub1_cost, mul_cost,
sdiv_cost, udiv_cost, mul_widen_cost, mul_highpart_cost): Delete
macro definitions and re-purpose as inline functions.
(alg_hash_entry_ptr, set_alg_hash_used_p, sdiv_pow2_cheap_ptr,
set_sdiv_pow2_cheap, smod_pow2_cheap_ptr, set_smod_pow2_cheap,
zero_cost_ptr, set_zero_cost, add_cost_ptr, set_add_cost,
neg_cost_ptr, set_neg_cost, shift_cost_ptr, set_shift_cost,
shiftadd_cost_ptr, set_shiftadd_cost, shiftsub0_cost_ptr,
set_shiftsub0_cost, shiftsub1_cost_ptr, set_shiftsub1_cost,
mul_cost_ptr, set_mul_cost, sdiv_cost_ptr, set_sdiv_cost,
udiv_cost_ptr, set_udiv_cost, mul_widen_cost_ptr,
set_mul_widen_cost, mul_highpart_cost_ptr, set_mul_highpart_cost):
New functions.
(convert_cost_ptr): New function, split out from...
(set_convert_cost, convert_cost): ...here.
* expmed.c, tree-ssa-loop-ivopts.c: Update for new functions.
* gimple-ssa-strength-reduction.c: Likewise.
From-SVN: r189919
2012-07-27 23:01:16 +02:00
|
|
|
|
return neg_cost (speed, lhs_mode);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
|
|
|
|
case NOP_EXPR:
|
2012-07-26 15:10:04 +02:00
|
|
|
|
return convert_cost (lhs_mode, TYPE_MODE (TREE_TYPE (rhs1)), speed);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
|
|
|
|
/* Note that we don't assign costs to copies that in most cases
|
|
|
|
|
will go away. */
|
|
|
|
|
default:
|
|
|
|
|
;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
gcc_unreachable ();
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Look up the defining statement for BASE_IN and return a pointer
|
|
|
|
|
to its candidate in the candidate table, if any; otherwise NULL.
|
|
|
|
|
Only CAND_ADD and CAND_MULT candidates are returned. */
|
|
|
|
|
|
|
|
|
|
static slsr_cand_t
|
|
|
|
|
base_cand_from_table (tree base_in)
|
|
|
|
|
{
|
|
|
|
|
slsr_cand_t *result;
|
|
|
|
|
|
|
|
|
|
gimple def = SSA_NAME_DEF_STMT (base_in);
|
|
|
|
|
if (!def)
|
|
|
|
|
return (slsr_cand_t) NULL;
|
|
|
|
|
|
|
|
|
|
result = (slsr_cand_t *) pointer_map_contains (stmt_cand_map, def);
|
2012-08-01 15:02:38 +02:00
|
|
|
|
|
|
|
|
|
if (result && (*result)->kind != CAND_REF)
|
|
|
|
|
return *result;
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
2012-08-01 15:02:38 +02:00
|
|
|
|
return (slsr_cand_t) NULL;
|
2012-06-26 18:27:50 +02:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Add an entry to the statement-to-candidate mapping. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
add_cand_for_stmt (gimple gs, slsr_cand_t c)
|
|
|
|
|
{
|
|
|
|
|
void **slot = pointer_map_insert (stmt_cand_map, gs);
|
|
|
|
|
gcc_assert (!*slot);
|
|
|
|
|
*slot = c;
|
|
|
|
|
}
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
/* Given PHI which contains a phi statement, determine whether it
|
|
|
|
|
satisfies all the requirements of a phi candidate. If so, create
|
|
|
|
|
a candidate. Note that a CAND_PHI never has a basis itself, but
|
|
|
|
|
is used to help find a basis for subsequent candidates. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
slsr_process_phi (gimple phi, bool speed)
|
|
|
|
|
{
|
|
|
|
|
unsigned i;
|
|
|
|
|
tree arg0_base = NULL_TREE, base_type;
|
|
|
|
|
slsr_cand_t c;
|
|
|
|
|
struct loop *cand_loop = gimple_bb (phi)->loop_father;
|
|
|
|
|
unsigned savings = 0;
|
|
|
|
|
|
|
|
|
|
/* A CAND_PHI requires each of its arguments to have the same
|
|
|
|
|
derived base name. (See the module header commentary for a
|
|
|
|
|
definition of derived base names.) Furthermore, all feeding
|
|
|
|
|
definitions must be in the same position in the loop hierarchy
|
|
|
|
|
as PHI. */
|
|
|
|
|
|
|
|
|
|
for (i = 0; i < gimple_phi_num_args (phi); i++)
|
|
|
|
|
{
|
|
|
|
|
slsr_cand_t arg_cand;
|
|
|
|
|
tree arg = gimple_phi_arg_def (phi, i);
|
|
|
|
|
tree derived_base_name = NULL_TREE;
|
|
|
|
|
gimple arg_stmt = NULL;
|
|
|
|
|
basic_block arg_bb = NULL;
|
|
|
|
|
|
|
|
|
|
if (TREE_CODE (arg) != SSA_NAME)
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
arg_cand = base_cand_from_table (arg);
|
|
|
|
|
|
|
|
|
|
if (arg_cand)
|
|
|
|
|
{
|
|
|
|
|
while (arg_cand->kind != CAND_ADD && arg_cand->kind != CAND_PHI)
|
|
|
|
|
{
|
|
|
|
|
if (!arg_cand->next_interp)
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
arg_cand = lookup_cand (arg_cand->next_interp);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (!integer_onep (arg_cand->stride))
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
derived_base_name = arg_cand->base_expr;
|
|
|
|
|
arg_stmt = arg_cand->cand_stmt;
|
|
|
|
|
arg_bb = gimple_bb (arg_stmt);
|
|
|
|
|
|
|
|
|
|
/* Gather potential dead code savings if the phi statement
|
|
|
|
|
can be removed later on. */
|
|
|
|
|
if (has_single_use (arg))
|
|
|
|
|
{
|
|
|
|
|
if (gimple_code (arg_stmt) == GIMPLE_PHI)
|
|
|
|
|
savings += arg_cand->dead_savings;
|
|
|
|
|
else
|
|
|
|
|
savings += stmt_cost (arg_stmt, speed);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
derived_base_name = arg;
|
|
|
|
|
|
|
|
|
|
if (SSA_NAME_IS_DEFAULT_DEF (arg))
|
|
|
|
|
arg_bb = single_succ (ENTRY_BLOCK_PTR);
|
|
|
|
|
else
|
|
|
|
|
gimple_bb (SSA_NAME_DEF_STMT (arg));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (!arg_bb || arg_bb->loop_father != cand_loop)
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
if (i == 0)
|
|
|
|
|
arg0_base = derived_base_name;
|
|
|
|
|
else if (!operand_equal_p (derived_base_name, arg0_base, 0))
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Create the candidate. "alloc_cand_and_find_basis" is named
|
|
|
|
|
misleadingly for this case, as no basis will be sought for a
|
|
|
|
|
CAND_PHI. */
|
|
|
|
|
base_type = TREE_TYPE (arg0_base);
|
|
|
|
|
|
|
|
|
|
c = alloc_cand_and_find_basis (CAND_PHI, phi, arg0_base, double_int_zero,
|
|
|
|
|
integer_one_node, base_type, savings);
|
|
|
|
|
|
|
|
|
|
/* Add the candidate to the statement-candidate mapping. */
|
|
|
|
|
add_cand_for_stmt (phi, c);
|
|
|
|
|
}
|
|
|
|
|
|
2012-08-01 15:02:38 +02:00
|
|
|
|
/* Look for the following pattern:
|
|
|
|
|
|
|
|
|
|
*PBASE: MEM_REF (T1, C1)
|
|
|
|
|
|
|
|
|
|
*POFFSET: MULT_EXPR (T2, C3) [C2 is zero]
|
|
|
|
|
or
|
|
|
|
|
MULT_EXPR (PLUS_EXPR (T2, C2), C3)
|
|
|
|
|
or
|
|
|
|
|
MULT_EXPR (MINUS_EXPR (T2, -C2), C3)
|
|
|
|
|
|
|
|
|
|
*PINDEX: C4 * BITS_PER_UNIT
|
|
|
|
|
|
|
|
|
|
If not present, leave the input values unchanged and return FALSE.
|
|
|
|
|
Otherwise, modify the input values as follows and return TRUE:
|
|
|
|
|
|
|
|
|
|
*PBASE: T1
|
|
|
|
|
*POFFSET: MULT_EXPR (T2, C3)
|
|
|
|
|
*PINDEX: C1 + (C2 * C3) + C4 */
|
|
|
|
|
|
|
|
|
|
static bool
|
|
|
|
|
restructure_reference (tree *pbase, tree *poffset, double_int *pindex,
|
|
|
|
|
tree *ptype)
|
|
|
|
|
{
|
|
|
|
|
tree base = *pbase, offset = *poffset;
|
|
|
|
|
double_int index = *pindex;
|
2012-09-07 02:06:35 +02:00
|
|
|
|
double_int bpu = double_int::from_uhwi (BITS_PER_UNIT);
|
2012-08-01 15:02:38 +02:00
|
|
|
|
tree mult_op0, mult_op1, t1, t2, type;
|
|
|
|
|
double_int c1, c2, c3, c4;
|
|
|
|
|
|
|
|
|
|
if (!base
|
|
|
|
|
|| !offset
|
|
|
|
|
|| TREE_CODE (base) != MEM_REF
|
|
|
|
|
|| TREE_CODE (offset) != MULT_EXPR
|
|
|
|
|
|| TREE_CODE (TREE_OPERAND (offset, 1)) != INTEGER_CST
|
2012-09-07 02:06:35 +02:00
|
|
|
|
|| !index.umod (bpu, FLOOR_MOD_EXPR).is_zero ())
|
2012-08-01 15:02:38 +02:00
|
|
|
|
return false;
|
|
|
|
|
|
|
|
|
|
t1 = TREE_OPERAND (base, 0);
|
|
|
|
|
c1 = mem_ref_offset (base);
|
|
|
|
|
type = TREE_TYPE (TREE_OPERAND (base, 1));
|
|
|
|
|
|
|
|
|
|
mult_op0 = TREE_OPERAND (offset, 0);
|
|
|
|
|
mult_op1 = TREE_OPERAND (offset, 1);
|
|
|
|
|
|
|
|
|
|
c3 = tree_to_double_int (mult_op1);
|
|
|
|
|
|
|
|
|
|
if (TREE_CODE (mult_op0) == PLUS_EXPR)
|
|
|
|
|
|
|
|
|
|
if (TREE_CODE (TREE_OPERAND (mult_op0, 1)) == INTEGER_CST)
|
|
|
|
|
{
|
|
|
|
|
t2 = TREE_OPERAND (mult_op0, 0);
|
|
|
|
|
c2 = tree_to_double_int (TREE_OPERAND (mult_op0, 1));
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
return false;
|
|
|
|
|
|
|
|
|
|
else if (TREE_CODE (mult_op0) == MINUS_EXPR)
|
|
|
|
|
|
|
|
|
|
if (TREE_CODE (TREE_OPERAND (mult_op0, 1)) == INTEGER_CST)
|
|
|
|
|
{
|
|
|
|
|
t2 = TREE_OPERAND (mult_op0, 0);
|
2012-09-07 02:06:35 +02:00
|
|
|
|
c2 = -tree_to_double_int (TREE_OPERAND (mult_op0, 1));
|
2012-08-01 15:02:38 +02:00
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
return false;
|
|
|
|
|
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
t2 = mult_op0;
|
|
|
|
|
c2 = double_int_zero;
|
|
|
|
|
}
|
|
|
|
|
|
2012-09-07 02:06:35 +02:00
|
|
|
|
c4 = index.udiv (bpu, FLOOR_DIV_EXPR);
|
2012-08-01 15:02:38 +02:00
|
|
|
|
|
|
|
|
|
*pbase = t1;
|
|
|
|
|
*poffset = fold_build2 (MULT_EXPR, sizetype, t2,
|
|
|
|
|
double_int_to_tree (sizetype, c3));
|
2012-09-07 02:06:35 +02:00
|
|
|
|
*pindex = c1 + c2 * c3 + c4;
|
2012-08-01 15:02:38 +02:00
|
|
|
|
*ptype = type;
|
|
|
|
|
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Given GS which contains a data reference, create a CAND_REF entry in
|
|
|
|
|
the candidate table and attempt to find a basis. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
slsr_process_ref (gimple gs)
|
|
|
|
|
{
|
|
|
|
|
tree ref_expr, base, offset, type;
|
|
|
|
|
HOST_WIDE_INT bitsize, bitpos;
|
|
|
|
|
enum machine_mode mode;
|
|
|
|
|
int unsignedp, volatilep;
|
|
|
|
|
double_int index;
|
|
|
|
|
slsr_cand_t c;
|
|
|
|
|
|
|
|
|
|
if (gimple_vdef (gs))
|
|
|
|
|
ref_expr = gimple_assign_lhs (gs);
|
|
|
|
|
else
|
|
|
|
|
ref_expr = gimple_assign_rhs1 (gs);
|
|
|
|
|
|
|
|
|
|
if (!handled_component_p (ref_expr)
|
|
|
|
|
|| TREE_CODE (ref_expr) == BIT_FIELD_REF
|
|
|
|
|
|| (TREE_CODE (ref_expr) == COMPONENT_REF
|
|
|
|
|
&& DECL_BIT_FIELD (TREE_OPERAND (ref_expr, 1))))
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
base = get_inner_reference (ref_expr, &bitsize, &bitpos, &offset, &mode,
|
|
|
|
|
&unsignedp, &volatilep, false);
|
2012-09-07 02:06:35 +02:00
|
|
|
|
index = double_int::from_uhwi (bitpos);
|
2012-08-01 15:02:38 +02:00
|
|
|
|
|
|
|
|
|
if (!restructure_reference (&base, &offset, &index, &type))
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
c = alloc_cand_and_find_basis (CAND_REF, gs, base, index, offset,
|
|
|
|
|
type, 0);
|
|
|
|
|
|
|
|
|
|
/* Add the candidate to the statement-candidate mapping. */
|
|
|
|
|
add_cand_for_stmt (gs, c);
|
|
|
|
|
}
|
|
|
|
|
|
2012-06-26 18:27:50 +02:00
|
|
|
|
/* Create a candidate entry for a statement GS, where GS multiplies
|
|
|
|
|
two SSA names BASE_IN and STRIDE_IN. Propagate any known information
|
|
|
|
|
about the two SSA names into the new candidate. Return the new
|
|
|
|
|
candidate. */
|
|
|
|
|
|
|
|
|
|
static slsr_cand_t
|
|
|
|
|
create_mul_ssa_cand (gimple gs, tree base_in, tree stride_in, bool speed)
|
|
|
|
|
{
|
|
|
|
|
tree base = NULL_TREE, stride = NULL_TREE, ctype = NULL_TREE;
|
|
|
|
|
double_int index;
|
|
|
|
|
unsigned savings = 0;
|
|
|
|
|
slsr_cand_t c;
|
|
|
|
|
slsr_cand_t base_cand = base_cand_from_table (base_in);
|
|
|
|
|
|
|
|
|
|
/* Look at all interpretations of the base candidate, if necessary,
|
|
|
|
|
to find information to propagate into this candidate. */
|
2013-05-03 20:56:39 +02:00
|
|
|
|
while (base_cand && !base && base_cand->kind != CAND_PHI)
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
if (base_cand->kind == CAND_MULT && integer_onep (base_cand->stride))
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
|
|
|
|
/* Y = (B + i') * 1
|
|
|
|
|
X = Y * Z
|
|
|
|
|
================
|
|
|
|
|
X = (B + i') * Z */
|
2012-08-01 16:00:35 +02:00
|
|
|
|
base = base_cand->base_expr;
|
2012-06-26 18:27:50 +02:00
|
|
|
|
index = base_cand->index;
|
|
|
|
|
stride = stride_in;
|
|
|
|
|
ctype = base_cand->cand_type;
|
|
|
|
|
if (has_single_use (base_in))
|
|
|
|
|
savings = (base_cand->dead_savings
|
|
|
|
|
+ stmt_cost (base_cand->cand_stmt, speed));
|
|
|
|
|
}
|
|
|
|
|
else if (base_cand->kind == CAND_ADD
|
|
|
|
|
&& TREE_CODE (base_cand->stride) == INTEGER_CST)
|
|
|
|
|
{
|
|
|
|
|
/* Y = B + (i' * S), S constant
|
|
|
|
|
X = Y * Z
|
|
|
|
|
============================
|
|
|
|
|
X = B + ((i' * S) * Z) */
|
2012-08-01 16:00:35 +02:00
|
|
|
|
base = base_cand->base_expr;
|
2012-09-07 02:06:35 +02:00
|
|
|
|
index = base_cand->index * tree_to_double_int (base_cand->stride);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
stride = stride_in;
|
|
|
|
|
ctype = base_cand->cand_type;
|
|
|
|
|
if (has_single_use (base_in))
|
|
|
|
|
savings = (base_cand->dead_savings
|
|
|
|
|
+ stmt_cost (base_cand->cand_stmt, speed));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (base_cand->next_interp)
|
|
|
|
|
base_cand = lookup_cand (base_cand->next_interp);
|
|
|
|
|
else
|
|
|
|
|
base_cand = NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (!base)
|
|
|
|
|
{
|
|
|
|
|
/* No interpretations had anything useful to propagate, so
|
|
|
|
|
produce X = (Y + 0) * Z. */
|
|
|
|
|
base = base_in;
|
|
|
|
|
index = double_int_zero;
|
|
|
|
|
stride = stride_in;
|
2012-08-03 10:55:43 +02:00
|
|
|
|
ctype = TREE_TYPE (base_in);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
c = alloc_cand_and_find_basis (CAND_MULT, gs, base, index, stride,
|
|
|
|
|
ctype, savings);
|
|
|
|
|
return c;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Create a candidate entry for a statement GS, where GS multiplies
|
|
|
|
|
SSA name BASE_IN by constant STRIDE_IN. Propagate any known
|
|
|
|
|
information about BASE_IN into the new candidate. Return the new
|
|
|
|
|
candidate. */
|
|
|
|
|
|
|
|
|
|
static slsr_cand_t
|
|
|
|
|
create_mul_imm_cand (gimple gs, tree base_in, tree stride_in, bool speed)
|
|
|
|
|
{
|
|
|
|
|
tree base = NULL_TREE, stride = NULL_TREE, ctype = NULL_TREE;
|
|
|
|
|
double_int index, temp;
|
|
|
|
|
unsigned savings = 0;
|
|
|
|
|
slsr_cand_t c;
|
|
|
|
|
slsr_cand_t base_cand = base_cand_from_table (base_in);
|
|
|
|
|
|
|
|
|
|
/* Look at all interpretations of the base candidate, if necessary,
|
|
|
|
|
to find information to propagate into this candidate. */
|
2013-05-03 20:56:39 +02:00
|
|
|
|
while (base_cand && !base && base_cand->kind != CAND_PHI)
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
|
|
|
|
if (base_cand->kind == CAND_MULT
|
|
|
|
|
&& TREE_CODE (base_cand->stride) == INTEGER_CST)
|
|
|
|
|
{
|
|
|
|
|
/* Y = (B + i') * S, S constant
|
|
|
|
|
X = Y * c
|
|
|
|
|
============================
|
|
|
|
|
X = (B + i') * (S * c) */
|
2012-08-01 16:00:35 +02:00
|
|
|
|
base = base_cand->base_expr;
|
2012-06-26 18:27:50 +02:00
|
|
|
|
index = base_cand->index;
|
2012-09-07 02:06:35 +02:00
|
|
|
|
temp = tree_to_double_int (base_cand->stride)
|
|
|
|
|
* tree_to_double_int (stride_in);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
stride = double_int_to_tree (TREE_TYPE (stride_in), temp);
|
|
|
|
|
ctype = base_cand->cand_type;
|
|
|
|
|
if (has_single_use (base_in))
|
|
|
|
|
savings = (base_cand->dead_savings
|
|
|
|
|
+ stmt_cost (base_cand->cand_stmt, speed));
|
|
|
|
|
}
|
2013-05-03 20:56:39 +02:00
|
|
|
|
else if (base_cand->kind == CAND_ADD && integer_onep (base_cand->stride))
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
|
|
|
|
/* Y = B + (i' * 1)
|
|
|
|
|
X = Y * c
|
|
|
|
|
===========================
|
|
|
|
|
X = (B + i') * c */
|
2012-08-01 16:00:35 +02:00
|
|
|
|
base = base_cand->base_expr;
|
2012-06-26 18:27:50 +02:00
|
|
|
|
index = base_cand->index;
|
|
|
|
|
stride = stride_in;
|
|
|
|
|
ctype = base_cand->cand_type;
|
|
|
|
|
if (has_single_use (base_in))
|
|
|
|
|
savings = (base_cand->dead_savings
|
|
|
|
|
+ stmt_cost (base_cand->cand_stmt, speed));
|
|
|
|
|
}
|
|
|
|
|
else if (base_cand->kind == CAND_ADD
|
2012-09-07 02:06:35 +02:00
|
|
|
|
&& base_cand->index.is_one ()
|
2012-06-26 18:27:50 +02:00
|
|
|
|
&& TREE_CODE (base_cand->stride) == INTEGER_CST)
|
|
|
|
|
{
|
|
|
|
|
/* Y = B + (1 * S), S constant
|
|
|
|
|
X = Y * c
|
|
|
|
|
===========================
|
|
|
|
|
X = (B + S) * c */
|
2012-08-01 16:00:35 +02:00
|
|
|
|
base = base_cand->base_expr;
|
2012-06-26 18:27:50 +02:00
|
|
|
|
index = tree_to_double_int (base_cand->stride);
|
|
|
|
|
stride = stride_in;
|
|
|
|
|
ctype = base_cand->cand_type;
|
|
|
|
|
if (has_single_use (base_in))
|
|
|
|
|
savings = (base_cand->dead_savings
|
|
|
|
|
+ stmt_cost (base_cand->cand_stmt, speed));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (base_cand->next_interp)
|
|
|
|
|
base_cand = lookup_cand (base_cand->next_interp);
|
|
|
|
|
else
|
|
|
|
|
base_cand = NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (!base)
|
|
|
|
|
{
|
|
|
|
|
/* No interpretations had anything useful to propagate, so
|
|
|
|
|
produce X = (Y + 0) * c. */
|
|
|
|
|
base = base_in;
|
|
|
|
|
index = double_int_zero;
|
|
|
|
|
stride = stride_in;
|
2012-08-03 10:55:43 +02:00
|
|
|
|
ctype = TREE_TYPE (base_in);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
c = alloc_cand_and_find_basis (CAND_MULT, gs, base, index, stride,
|
|
|
|
|
ctype, savings);
|
|
|
|
|
return c;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Given GS which is a multiply of scalar integers, make an appropriate
|
|
|
|
|
entry in the candidate table. If this is a multiply of two SSA names,
|
|
|
|
|
create two CAND_MULT interpretations and attempt to find a basis for
|
|
|
|
|
each of them. Otherwise, create a single CAND_MULT and attempt to
|
|
|
|
|
find a basis. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
slsr_process_mul (gimple gs, tree rhs1, tree rhs2, bool speed)
|
|
|
|
|
{
|
|
|
|
|
slsr_cand_t c, c2;
|
|
|
|
|
|
|
|
|
|
/* If this is a multiply of an SSA name with itself, it is highly
|
|
|
|
|
unlikely that we will get a strength reduction opportunity, so
|
|
|
|
|
don't record it as a candidate. This simplifies the logic for
|
|
|
|
|
finding a basis, so if this is removed that must be considered. */
|
|
|
|
|
if (rhs1 == rhs2)
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
if (TREE_CODE (rhs2) == SSA_NAME)
|
|
|
|
|
{
|
|
|
|
|
/* Record an interpretation of this statement in the candidate table
|
2012-08-01 16:00:35 +02:00
|
|
|
|
assuming RHS1 is the base expression and RHS2 is the stride. */
|
2012-06-26 18:27:50 +02:00
|
|
|
|
c = create_mul_ssa_cand (gs, rhs1, rhs2, speed);
|
|
|
|
|
|
|
|
|
|
/* Add the first interpretation to the statement-candidate mapping. */
|
|
|
|
|
add_cand_for_stmt (gs, c);
|
|
|
|
|
|
|
|
|
|
/* Record another interpretation of this statement assuming RHS1
|
2012-08-01 16:00:35 +02:00
|
|
|
|
is the stride and RHS2 is the base expression. */
|
2012-06-26 18:27:50 +02:00
|
|
|
|
c2 = create_mul_ssa_cand (gs, rhs2, rhs1, speed);
|
|
|
|
|
c->next_interp = c2->cand_num;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
/* Record an interpretation for the multiply-immediate. */
|
|
|
|
|
c = create_mul_imm_cand (gs, rhs1, rhs2, speed);
|
|
|
|
|
|
|
|
|
|
/* Add the interpretation to the statement-candidate mapping. */
|
|
|
|
|
add_cand_for_stmt (gs, c);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Create a candidate entry for a statement GS, where GS adds two
|
|
|
|
|
SSA names BASE_IN and ADDEND_IN if SUBTRACT_P is false, and
|
|
|
|
|
subtracts ADDEND_IN from BASE_IN otherwise. Propagate any known
|
|
|
|
|
information about the two SSA names into the new candidate.
|
|
|
|
|
Return the new candidate. */
|
|
|
|
|
|
|
|
|
|
static slsr_cand_t
|
|
|
|
|
create_add_ssa_cand (gimple gs, tree base_in, tree addend_in,
|
|
|
|
|
bool subtract_p, bool speed)
|
|
|
|
|
{
|
|
|
|
|
tree base = NULL_TREE, stride = NULL_TREE, ctype = NULL;
|
|
|
|
|
double_int index;
|
|
|
|
|
unsigned savings = 0;
|
|
|
|
|
slsr_cand_t c;
|
|
|
|
|
slsr_cand_t base_cand = base_cand_from_table (base_in);
|
|
|
|
|
slsr_cand_t addend_cand = base_cand_from_table (addend_in);
|
|
|
|
|
|
|
|
|
|
/* The most useful transformation is a multiply-immediate feeding
|
|
|
|
|
an add or subtract. Look for that first. */
|
2013-05-03 20:56:39 +02:00
|
|
|
|
while (addend_cand && !base && addend_cand->kind != CAND_PHI)
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
|
|
|
|
if (addend_cand->kind == CAND_MULT
|
2012-09-07 02:06:35 +02:00
|
|
|
|
&& addend_cand->index.is_zero ()
|
2012-06-26 18:27:50 +02:00
|
|
|
|
&& TREE_CODE (addend_cand->stride) == INTEGER_CST)
|
|
|
|
|
{
|
|
|
|
|
/* Z = (B + 0) * S, S constant
|
|
|
|
|
X = Y +/- Z
|
|
|
|
|
===========================
|
|
|
|
|
X = Y + ((+/-1 * S) * B) */
|
|
|
|
|
base = base_in;
|
|
|
|
|
index = tree_to_double_int (addend_cand->stride);
|
|
|
|
|
if (subtract_p)
|
2012-09-07 02:06:35 +02:00
|
|
|
|
index = -index;
|
2012-08-01 16:00:35 +02:00
|
|
|
|
stride = addend_cand->base_expr;
|
2012-08-03 10:55:43 +02:00
|
|
|
|
ctype = TREE_TYPE (base_in);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
if (has_single_use (addend_in))
|
|
|
|
|
savings = (addend_cand->dead_savings
|
|
|
|
|
+ stmt_cost (addend_cand->cand_stmt, speed));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (addend_cand->next_interp)
|
|
|
|
|
addend_cand = lookup_cand (addend_cand->next_interp);
|
|
|
|
|
else
|
|
|
|
|
addend_cand = NULL;
|
|
|
|
|
}
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
while (base_cand && !base && base_cand->kind != CAND_PHI)
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
|
|
|
|
if (base_cand->kind == CAND_ADD
|
2012-09-07 02:06:35 +02:00
|
|
|
|
&& (base_cand->index.is_zero ()
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|| operand_equal_p (base_cand->stride,
|
|
|
|
|
integer_zero_node, 0)))
|
|
|
|
|
{
|
|
|
|
|
/* Y = B + (i' * S), i' * S = 0
|
|
|
|
|
X = Y +/- Z
|
|
|
|
|
============================
|
|
|
|
|
X = B + (+/-1 * Z) */
|
2012-08-01 16:00:35 +02:00
|
|
|
|
base = base_cand->base_expr;
|
2012-06-26 18:27:50 +02:00
|
|
|
|
index = subtract_p ? double_int_minus_one : double_int_one;
|
|
|
|
|
stride = addend_in;
|
|
|
|
|
ctype = base_cand->cand_type;
|
|
|
|
|
if (has_single_use (base_in))
|
|
|
|
|
savings = (base_cand->dead_savings
|
|
|
|
|
+ stmt_cost (base_cand->cand_stmt, speed));
|
|
|
|
|
}
|
|
|
|
|
else if (subtract_p)
|
|
|
|
|
{
|
|
|
|
|
slsr_cand_t subtrahend_cand = base_cand_from_table (addend_in);
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
while (subtrahend_cand && !base && subtrahend_cand->kind != CAND_PHI)
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
|
|
|
|
if (subtrahend_cand->kind == CAND_MULT
|
2012-09-07 02:06:35 +02:00
|
|
|
|
&& subtrahend_cand->index.is_zero ()
|
2012-06-26 18:27:50 +02:00
|
|
|
|
&& TREE_CODE (subtrahend_cand->stride) == INTEGER_CST)
|
|
|
|
|
{
|
|
|
|
|
/* Z = (B + 0) * S, S constant
|
|
|
|
|
X = Y - Z
|
|
|
|
|
===========================
|
|
|
|
|
Value: X = Y + ((-1 * S) * B) */
|
|
|
|
|
base = base_in;
|
|
|
|
|
index = tree_to_double_int (subtrahend_cand->stride);
|
2012-09-07 02:06:35 +02:00
|
|
|
|
index = -index;
|
2012-08-01 16:00:35 +02:00
|
|
|
|
stride = subtrahend_cand->base_expr;
|
2012-08-03 10:55:43 +02:00
|
|
|
|
ctype = TREE_TYPE (base_in);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
if (has_single_use (addend_in))
|
|
|
|
|
savings = (subtrahend_cand->dead_savings
|
|
|
|
|
+ stmt_cost (subtrahend_cand->cand_stmt, speed));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (subtrahend_cand->next_interp)
|
|
|
|
|
subtrahend_cand = lookup_cand (subtrahend_cand->next_interp);
|
|
|
|
|
else
|
|
|
|
|
subtrahend_cand = NULL;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (base_cand->next_interp)
|
|
|
|
|
base_cand = lookup_cand (base_cand->next_interp);
|
|
|
|
|
else
|
|
|
|
|
base_cand = NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (!base)
|
|
|
|
|
{
|
|
|
|
|
/* No interpretations had anything useful to propagate, so
|
|
|
|
|
produce X = Y + (1 * Z). */
|
|
|
|
|
base = base_in;
|
|
|
|
|
index = subtract_p ? double_int_minus_one : double_int_one;
|
|
|
|
|
stride = addend_in;
|
2012-08-03 10:55:43 +02:00
|
|
|
|
ctype = TREE_TYPE (base_in);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
c = alloc_cand_and_find_basis (CAND_ADD, gs, base, index, stride,
|
|
|
|
|
ctype, savings);
|
|
|
|
|
return c;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Create a candidate entry for a statement GS, where GS adds SSA
|
|
|
|
|
name BASE_IN to constant INDEX_IN. Propagate any known information
|
|
|
|
|
about BASE_IN into the new candidate. Return the new candidate. */
|
|
|
|
|
|
|
|
|
|
static slsr_cand_t
|
|
|
|
|
create_add_imm_cand (gimple gs, tree base_in, double_int index_in, bool speed)
|
|
|
|
|
{
|
|
|
|
|
enum cand_kind kind = CAND_ADD;
|
|
|
|
|
tree base = NULL_TREE, stride = NULL_TREE, ctype = NULL_TREE;
|
|
|
|
|
double_int index, multiple;
|
|
|
|
|
unsigned savings = 0;
|
|
|
|
|
slsr_cand_t c;
|
|
|
|
|
slsr_cand_t base_cand = base_cand_from_table (base_in);
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
while (base_cand && !base && base_cand->kind != CAND_PHI)
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
|
|
|
|
bool unsigned_p = TYPE_UNSIGNED (TREE_TYPE (base_cand->stride));
|
|
|
|
|
|
|
|
|
|
if (TREE_CODE (base_cand->stride) == INTEGER_CST
|
2012-09-07 02:06:35 +02:00
|
|
|
|
&& index_in.multiple_of (tree_to_double_int (base_cand->stride),
|
|
|
|
|
unsigned_p, &multiple))
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
|
|
|
|
/* Y = (B + i') * S, S constant, c = kS for some integer k
|
|
|
|
|
X = Y + c
|
|
|
|
|
============================
|
|
|
|
|
X = (B + (i'+ k)) * S
|
|
|
|
|
OR
|
|
|
|
|
Y = B + (i' * S), S constant, c = kS for some integer k
|
|
|
|
|
X = Y + c
|
|
|
|
|
============================
|
|
|
|
|
X = (B + (i'+ k)) * S */
|
|
|
|
|
kind = base_cand->kind;
|
2012-08-01 16:00:35 +02:00
|
|
|
|
base = base_cand->base_expr;
|
2012-09-07 02:06:35 +02:00
|
|
|
|
index = base_cand->index + multiple;
|
2012-06-26 18:27:50 +02:00
|
|
|
|
stride = base_cand->stride;
|
|
|
|
|
ctype = base_cand->cand_type;
|
|
|
|
|
if (has_single_use (base_in))
|
|
|
|
|
savings = (base_cand->dead_savings
|
|
|
|
|
+ stmt_cost (base_cand->cand_stmt, speed));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (base_cand->next_interp)
|
|
|
|
|
base_cand = lookup_cand (base_cand->next_interp);
|
|
|
|
|
else
|
|
|
|
|
base_cand = NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (!base)
|
|
|
|
|
{
|
|
|
|
|
/* No interpretations had anything useful to propagate, so
|
|
|
|
|
produce X = Y + (c * 1). */
|
|
|
|
|
kind = CAND_ADD;
|
|
|
|
|
base = base_in;
|
|
|
|
|
index = index_in;
|
|
|
|
|
stride = integer_one_node;
|
2012-08-03 10:55:43 +02:00
|
|
|
|
ctype = TREE_TYPE (base_in);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
c = alloc_cand_and_find_basis (kind, gs, base, index, stride,
|
|
|
|
|
ctype, savings);
|
|
|
|
|
return c;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Given GS which is an add or subtract of scalar integers or pointers,
|
|
|
|
|
make at least one appropriate entry in the candidate table. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
slsr_process_add (gimple gs, tree rhs1, tree rhs2, bool speed)
|
|
|
|
|
{
|
|
|
|
|
bool subtract_p = gimple_assign_rhs_code (gs) == MINUS_EXPR;
|
|
|
|
|
slsr_cand_t c = NULL, c2;
|
|
|
|
|
|
|
|
|
|
if (TREE_CODE (rhs2) == SSA_NAME)
|
|
|
|
|
{
|
2012-08-01 16:00:35 +02:00
|
|
|
|
/* First record an interpretation assuming RHS1 is the base expression
|
2012-06-26 18:27:50 +02:00
|
|
|
|
and RHS2 is the stride. But it doesn't make sense for the
|
|
|
|
|
stride to be a pointer, so don't record a candidate in that case. */
|
2012-08-03 10:55:43 +02:00
|
|
|
|
if (!POINTER_TYPE_P (TREE_TYPE (rhs2)))
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
|
|
|
|
c = create_add_ssa_cand (gs, rhs1, rhs2, subtract_p, speed);
|
|
|
|
|
|
|
|
|
|
/* Add the first interpretation to the statement-candidate
|
|
|
|
|
mapping. */
|
|
|
|
|
add_cand_for_stmt (gs, c);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* If the two RHS operands are identical, or this is a subtract,
|
|
|
|
|
we're done. */
|
|
|
|
|
if (operand_equal_p (rhs1, rhs2, 0) || subtract_p)
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
/* Otherwise, record another interpretation assuming RHS2 is the
|
2012-08-01 16:00:35 +02:00
|
|
|
|
base expression and RHS1 is the stride, again provided that the
|
2012-06-26 18:27:50 +02:00
|
|
|
|
stride is not a pointer. */
|
2012-08-03 10:55:43 +02:00
|
|
|
|
if (!POINTER_TYPE_P (TREE_TYPE (rhs1)))
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
|
|
|
|
c2 = create_add_ssa_cand (gs, rhs2, rhs1, false, speed);
|
|
|
|
|
if (c)
|
|
|
|
|
c->next_interp = c2->cand_num;
|
|
|
|
|
else
|
|
|
|
|
add_cand_for_stmt (gs, c2);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
double_int index;
|
|
|
|
|
|
|
|
|
|
/* Record an interpretation for the add-immediate. */
|
|
|
|
|
index = tree_to_double_int (rhs2);
|
|
|
|
|
if (subtract_p)
|
2012-09-07 02:06:35 +02:00
|
|
|
|
index = -index;
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
|
|
|
|
c = create_add_imm_cand (gs, rhs1, index, speed);
|
|
|
|
|
|
|
|
|
|
/* Add the interpretation to the statement-candidate mapping. */
|
|
|
|
|
add_cand_for_stmt (gs, c);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Given GS which is a negate of a scalar integer, make an appropriate
|
|
|
|
|
entry in the candidate table. A negate is equivalent to a multiply
|
|
|
|
|
by -1. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
slsr_process_neg (gimple gs, tree rhs1, bool speed)
|
|
|
|
|
{
|
|
|
|
|
/* Record a CAND_MULT interpretation for the multiply by -1. */
|
|
|
|
|
slsr_cand_t c = create_mul_imm_cand (gs, rhs1, integer_minus_one_node, speed);
|
|
|
|
|
|
|
|
|
|
/* Add the interpretation to the statement-candidate mapping. */
|
|
|
|
|
add_cand_for_stmt (gs, c);
|
|
|
|
|
}
|
|
|
|
|
|
2012-08-15 15:27:29 +02:00
|
|
|
|
/* Help function for legal_cast_p, operating on two trees. Checks
|
|
|
|
|
whether it's allowable to cast from RHS to LHS. See legal_cast_p
|
|
|
|
|
for more details. */
|
|
|
|
|
|
|
|
|
|
static bool
|
|
|
|
|
legal_cast_p_1 (tree lhs, tree rhs)
|
|
|
|
|
{
|
|
|
|
|
tree lhs_type, rhs_type;
|
|
|
|
|
unsigned lhs_size, rhs_size;
|
|
|
|
|
bool lhs_wraps, rhs_wraps;
|
|
|
|
|
|
|
|
|
|
lhs_type = TREE_TYPE (lhs);
|
|
|
|
|
rhs_type = TREE_TYPE (rhs);
|
|
|
|
|
lhs_size = TYPE_PRECISION (lhs_type);
|
|
|
|
|
rhs_size = TYPE_PRECISION (rhs_type);
|
|
|
|
|
lhs_wraps = TYPE_OVERFLOW_WRAPS (lhs_type);
|
|
|
|
|
rhs_wraps = TYPE_OVERFLOW_WRAPS (rhs_type);
|
|
|
|
|
|
|
|
|
|
if (lhs_size < rhs_size
|
|
|
|
|
|| (rhs_wraps && !lhs_wraps)
|
|
|
|
|
|| (rhs_wraps && lhs_wraps && rhs_size != lhs_size))
|
|
|
|
|
return false;
|
|
|
|
|
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
2012-06-26 18:27:50 +02:00
|
|
|
|
/* Return TRUE if GS is a statement that defines an SSA name from
|
|
|
|
|
a conversion and is legal for us to combine with an add and multiply
|
|
|
|
|
in the candidate table. For example, suppose we have:
|
|
|
|
|
|
|
|
|
|
A = B + i;
|
|
|
|
|
C = (type) A;
|
|
|
|
|
D = C * S;
|
|
|
|
|
|
|
|
|
|
Without the type-cast, we would create a CAND_MULT for D with base B,
|
|
|
|
|
index i, and stride S. We want to record this candidate only if it
|
|
|
|
|
is equivalent to apply the type cast following the multiply:
|
|
|
|
|
|
|
|
|
|
A = B + i;
|
|
|
|
|
E = A * S;
|
|
|
|
|
D = (type) E;
|
|
|
|
|
|
|
|
|
|
We will record the type with the candidate for D. This allows us
|
|
|
|
|
to use a similar previous candidate as a basis. If we have earlier seen
|
|
|
|
|
|
|
|
|
|
A' = B + i';
|
|
|
|
|
C' = (type) A';
|
|
|
|
|
D' = C' * S;
|
|
|
|
|
|
|
|
|
|
we can replace D with
|
|
|
|
|
|
|
|
|
|
D = D' + (i - i') * S;
|
|
|
|
|
|
|
|
|
|
But if moving the type-cast would change semantics, we mustn't do this.
|
|
|
|
|
|
|
|
|
|
This is legitimate for casts from a non-wrapping integral type to
|
|
|
|
|
any integral type of the same or larger size. It is not legitimate
|
|
|
|
|
to convert a wrapping type to a non-wrapping type, or to a wrapping
|
|
|
|
|
type of a different size. I.e., with a wrapping type, we must
|
|
|
|
|
assume that the addition B + i could wrap, in which case performing
|
|
|
|
|
the multiply before or after one of the "illegal" type casts will
|
|
|
|
|
have different semantics. */
|
|
|
|
|
|
|
|
|
|
static bool
|
|
|
|
|
legal_cast_p (gimple gs, tree rhs)
|
|
|
|
|
{
|
|
|
|
|
if (!is_gimple_assign (gs)
|
|
|
|
|
|| !CONVERT_EXPR_CODE_P (gimple_assign_rhs_code (gs)))
|
|
|
|
|
return false;
|
|
|
|
|
|
2012-08-15 15:27:29 +02:00
|
|
|
|
return legal_cast_p_1 (gimple_assign_lhs (gs), rhs);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Given GS which is a cast to a scalar integer type, determine whether
|
|
|
|
|
the cast is legal for strength reduction. If so, make at least one
|
|
|
|
|
appropriate entry in the candidate table. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
slsr_process_cast (gimple gs, tree rhs1, bool speed)
|
|
|
|
|
{
|
|
|
|
|
tree lhs, ctype;
|
|
|
|
|
slsr_cand_t base_cand, c, c2;
|
|
|
|
|
unsigned savings = 0;
|
|
|
|
|
|
|
|
|
|
if (!legal_cast_p (gs, rhs1))
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
lhs = gimple_assign_lhs (gs);
|
|
|
|
|
base_cand = base_cand_from_table (rhs1);
|
|
|
|
|
ctype = TREE_TYPE (lhs);
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
if (base_cand && base_cand->kind != CAND_PHI)
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
|
|
|
|
while (base_cand)
|
|
|
|
|
{
|
|
|
|
|
/* Propagate all data from the base candidate except the type,
|
|
|
|
|
which comes from the cast, and the base candidate's cast,
|
|
|
|
|
which is no longer applicable. */
|
|
|
|
|
if (has_single_use (rhs1))
|
|
|
|
|
savings = (base_cand->dead_savings
|
|
|
|
|
+ stmt_cost (base_cand->cand_stmt, speed));
|
|
|
|
|
|
|
|
|
|
c = alloc_cand_and_find_basis (base_cand->kind, gs,
|
2012-08-01 16:00:35 +02:00
|
|
|
|
base_cand->base_expr,
|
2012-06-26 18:27:50 +02:00
|
|
|
|
base_cand->index, base_cand->stride,
|
|
|
|
|
ctype, savings);
|
|
|
|
|
if (base_cand->next_interp)
|
|
|
|
|
base_cand = lookup_cand (base_cand->next_interp);
|
|
|
|
|
else
|
|
|
|
|
base_cand = NULL;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
/* If nothing is known about the RHS, create fresh CAND_ADD and
|
|
|
|
|
CAND_MULT interpretations:
|
|
|
|
|
|
|
|
|
|
X = Y + (0 * 1)
|
|
|
|
|
X = (Y + 0) * 1
|
|
|
|
|
|
|
|
|
|
The first of these is somewhat arbitrary, but the choice of
|
|
|
|
|
1 for the stride simplifies the logic for propagating casts
|
|
|
|
|
into their uses. */
|
|
|
|
|
c = alloc_cand_and_find_basis (CAND_ADD, gs, rhs1, double_int_zero,
|
|
|
|
|
integer_one_node, ctype, 0);
|
|
|
|
|
c2 = alloc_cand_and_find_basis (CAND_MULT, gs, rhs1, double_int_zero,
|
|
|
|
|
integer_one_node, ctype, 0);
|
|
|
|
|
c->next_interp = c2->cand_num;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Add the first (or only) interpretation to the statement-candidate
|
|
|
|
|
mapping. */
|
|
|
|
|
add_cand_for_stmt (gs, c);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Given GS which is a copy of a scalar integer type, make at least one
|
|
|
|
|
appropriate entry in the candidate table.
|
|
|
|
|
|
|
|
|
|
This interface is included for completeness, but is unnecessary
|
|
|
|
|
if this pass immediately follows a pass that performs copy
|
|
|
|
|
propagation, such as DOM. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
slsr_process_copy (gimple gs, tree rhs1, bool speed)
|
|
|
|
|
{
|
|
|
|
|
slsr_cand_t base_cand, c, c2;
|
|
|
|
|
unsigned savings = 0;
|
|
|
|
|
|
|
|
|
|
base_cand = base_cand_from_table (rhs1);
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
if (base_cand && base_cand->kind != CAND_PHI)
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
|
|
|
|
while (base_cand)
|
|
|
|
|
{
|
|
|
|
|
/* Propagate all data from the base candidate. */
|
|
|
|
|
if (has_single_use (rhs1))
|
|
|
|
|
savings = (base_cand->dead_savings
|
|
|
|
|
+ stmt_cost (base_cand->cand_stmt, speed));
|
|
|
|
|
|
|
|
|
|
c = alloc_cand_and_find_basis (base_cand->kind, gs,
|
2012-08-01 16:00:35 +02:00
|
|
|
|
base_cand->base_expr,
|
2012-06-26 18:27:50 +02:00
|
|
|
|
base_cand->index, base_cand->stride,
|
|
|
|
|
base_cand->cand_type, savings);
|
|
|
|
|
if (base_cand->next_interp)
|
|
|
|
|
base_cand = lookup_cand (base_cand->next_interp);
|
|
|
|
|
else
|
|
|
|
|
base_cand = NULL;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
/* If nothing is known about the RHS, create fresh CAND_ADD and
|
|
|
|
|
CAND_MULT interpretations:
|
|
|
|
|
|
|
|
|
|
X = Y + (0 * 1)
|
|
|
|
|
X = (Y + 0) * 1
|
|
|
|
|
|
|
|
|
|
The first of these is somewhat arbitrary, but the choice of
|
|
|
|
|
1 for the stride simplifies the logic for propagating casts
|
|
|
|
|
into their uses. */
|
|
|
|
|
c = alloc_cand_and_find_basis (CAND_ADD, gs, rhs1, double_int_zero,
|
|
|
|
|
integer_one_node, TREE_TYPE (rhs1), 0);
|
|
|
|
|
c2 = alloc_cand_and_find_basis (CAND_MULT, gs, rhs1, double_int_zero,
|
|
|
|
|
integer_one_node, TREE_TYPE (rhs1), 0);
|
|
|
|
|
c->next_interp = c2->cand_num;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Add the first (or only) interpretation to the statement-candidate
|
|
|
|
|
mapping. */
|
|
|
|
|
add_cand_for_stmt (gs, c);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Find strength-reduction candidates in block BB. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
find_candidates_in_block (struct dom_walk_data *walk_data ATTRIBUTE_UNUSED,
|
|
|
|
|
basic_block bb)
|
|
|
|
|
{
|
|
|
|
|
bool speed = optimize_bb_for_speed_p (bb);
|
|
|
|
|
gimple_stmt_iterator gsi;
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
for (gsi = gsi_start_phis (bb); !gsi_end_p (gsi); gsi_next (&gsi))
|
|
|
|
|
slsr_process_phi (gsi_stmt (gsi), speed);
|
|
|
|
|
|
2012-06-26 18:27:50 +02:00
|
|
|
|
for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
|
|
|
|
|
{
|
|
|
|
|
gimple gs = gsi_stmt (gsi);
|
|
|
|
|
|
2012-08-01 15:02:38 +02:00
|
|
|
|
if (gimple_vuse (gs) && gimple_assign_single_p (gs))
|
|
|
|
|
slsr_process_ref (gs);
|
|
|
|
|
|
|
|
|
|
else if (is_gimple_assign (gs)
|
|
|
|
|
&& SCALAR_INT_MODE_P
|
|
|
|
|
(TYPE_MODE (TREE_TYPE (gimple_assign_lhs (gs)))))
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
|
|
|
|
tree rhs1 = NULL_TREE, rhs2 = NULL_TREE;
|
|
|
|
|
|
|
|
|
|
switch (gimple_assign_rhs_code (gs))
|
|
|
|
|
{
|
|
|
|
|
case MULT_EXPR:
|
|
|
|
|
case PLUS_EXPR:
|
|
|
|
|
rhs1 = gimple_assign_rhs1 (gs);
|
|
|
|
|
rhs2 = gimple_assign_rhs2 (gs);
|
|
|
|
|
/* Should never happen, but currently some buggy situations
|
|
|
|
|
in earlier phases put constants in rhs1. */
|
|
|
|
|
if (TREE_CODE (rhs1) != SSA_NAME)
|
|
|
|
|
continue;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
/* Possible future opportunity: rhs1 of a ptr+ can be
|
|
|
|
|
an ADDR_EXPR. */
|
|
|
|
|
case POINTER_PLUS_EXPR:
|
|
|
|
|
case MINUS_EXPR:
|
|
|
|
|
rhs2 = gimple_assign_rhs2 (gs);
|
|
|
|
|
/* Fall-through. */
|
|
|
|
|
|
|
|
|
|
case NOP_EXPR:
|
|
|
|
|
case MODIFY_EXPR:
|
|
|
|
|
case NEGATE_EXPR:
|
|
|
|
|
rhs1 = gimple_assign_rhs1 (gs);
|
|
|
|
|
if (TREE_CODE (rhs1) != SSA_NAME)
|
|
|
|
|
continue;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
switch (gimple_assign_rhs_code (gs))
|
|
|
|
|
{
|
|
|
|
|
case MULT_EXPR:
|
|
|
|
|
slsr_process_mul (gs, rhs1, rhs2, speed);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case PLUS_EXPR:
|
|
|
|
|
case POINTER_PLUS_EXPR:
|
|
|
|
|
case MINUS_EXPR:
|
|
|
|
|
slsr_process_add (gs, rhs1, rhs2, speed);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case NEGATE_EXPR:
|
|
|
|
|
slsr_process_neg (gs, rhs1, speed);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case NOP_EXPR:
|
|
|
|
|
slsr_process_cast (gs, rhs1, speed);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case MODIFY_EXPR:
|
|
|
|
|
slsr_process_copy (gs, rhs1, speed);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Dump a candidate for debug. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
dump_candidate (slsr_cand_t c)
|
|
|
|
|
{
|
|
|
|
|
fprintf (dump_file, "%3d [%d] ", c->cand_num,
|
|
|
|
|
gimple_bb (c->cand_stmt)->index);
|
|
|
|
|
print_gimple_stmt (dump_file, c->cand_stmt, 0, 0);
|
|
|
|
|
switch (c->kind)
|
|
|
|
|
{
|
|
|
|
|
case CAND_MULT:
|
|
|
|
|
fputs (" MULT : (", dump_file);
|
2012-08-01 16:00:35 +02:00
|
|
|
|
print_generic_expr (dump_file, c->base_expr, 0);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
fputs (" + ", dump_file);
|
|
|
|
|
dump_double_int (dump_file, c->index, false);
|
|
|
|
|
fputs (") * ", dump_file);
|
|
|
|
|
print_generic_expr (dump_file, c->stride, 0);
|
|
|
|
|
fputs (" : ", dump_file);
|
|
|
|
|
break;
|
|
|
|
|
case CAND_ADD:
|
|
|
|
|
fputs (" ADD : ", dump_file);
|
2012-08-01 16:00:35 +02:00
|
|
|
|
print_generic_expr (dump_file, c->base_expr, 0);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
fputs (" + (", dump_file);
|
|
|
|
|
dump_double_int (dump_file, c->index, false);
|
|
|
|
|
fputs (" * ", dump_file);
|
|
|
|
|
print_generic_expr (dump_file, c->stride, 0);
|
|
|
|
|
fputs (") : ", dump_file);
|
|
|
|
|
break;
|
2012-08-01 15:02:38 +02:00
|
|
|
|
case CAND_REF:
|
|
|
|
|
fputs (" REF : ", dump_file);
|
2012-08-01 16:00:35 +02:00
|
|
|
|
print_generic_expr (dump_file, c->base_expr, 0);
|
2012-08-01 15:02:38 +02:00
|
|
|
|
fputs (" + (", dump_file);
|
|
|
|
|
print_generic_expr (dump_file, c->stride, 0);
|
|
|
|
|
fputs (") + ", dump_file);
|
|
|
|
|
dump_double_int (dump_file, c->index, false);
|
|
|
|
|
fputs (" : ", dump_file);
|
|
|
|
|
break;
|
2013-05-03 20:56:39 +02:00
|
|
|
|
case CAND_PHI:
|
|
|
|
|
fputs (" PHI : ", dump_file);
|
|
|
|
|
print_generic_expr (dump_file, c->base_expr, 0);
|
|
|
|
|
fputs (" + (unknown * ", dump_file);
|
|
|
|
|
print_generic_expr (dump_file, c->stride, 0);
|
|
|
|
|
fputs (") : ", dump_file);
|
|
|
|
|
break;
|
2012-06-26 18:27:50 +02:00
|
|
|
|
default:
|
|
|
|
|
gcc_unreachable ();
|
|
|
|
|
}
|
|
|
|
|
print_generic_expr (dump_file, c->cand_type, 0);
|
|
|
|
|
fprintf (dump_file, "\n basis: %d dependent: %d sibling: %d\n",
|
|
|
|
|
c->basis, c->dependent, c->sibling);
|
|
|
|
|
fprintf (dump_file, " next-interp: %d dead-savings: %d\n",
|
|
|
|
|
c->next_interp, c->dead_savings);
|
|
|
|
|
if (c->def_phi)
|
2013-05-03 20:56:39 +02:00
|
|
|
|
fprintf (dump_file, " phi: %d\n", c->def_phi);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
fputs ("\n", dump_file);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Dump the candidate vector for debug. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
dump_cand_vec (void)
|
|
|
|
|
{
|
|
|
|
|
unsigned i;
|
|
|
|
|
slsr_cand_t c;
|
|
|
|
|
|
|
|
|
|
fprintf (dump_file, "\nStrength reduction candidate vector:\n\n");
|
|
|
|
|
|
This patch rewrites the old VEC macro-based interface into a new one based on the template class 'vec'.
This patch rewrites the old VEC macro-based interface into a new one
based on the template class 'vec'. The user-visible changes are
described in http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec.
I have tested the patch pretty extensively:
- Regular bootstraps on x86_64, ppc, ia64, sparc and hppa.
- Bootstraps with --enable-checking=release
- Bootstraps with --enable-checking=gc,gcac
- Basic builds on all targets (using contrib/config-list.mk).
We no longer access the vectors via VEC_* macros. The pattern is
"VEC_operation (T, A, V, args)" becomes "V.operation (args)".
The only thing I could not do is create proper ctors and dtors for the
vec class. Since these vectors are stored in unions, we
have to keep them as PODs (C++03 does not allow non-PODs in unions).
This means that creation and destruction must be explicit. There is a
new method vec<type, allocation, layout>::create() and another vec<type,
allocation, layout>::destroy() to allocate the internal vector.
For vectors that must be pointers, there is a family of free functions
that implement the operations that need to tolerate NULL vectors.
These functions all start with the prefix 'vec_safe_'. See the wiki
page for details.
The gengtype change removes the special handling for VEC() that used
to exist in gengtype. Additionally, it allows gengtype to recognize
templates of more than one argument and introduces the concept of an
undefined type (useful for template arguments that may or may not be
types).
When a TYPE_UNDEFINED is reached, gengtype will ignore it if it
happens inside a type marked with GTY((user)). Otherwise, it will
emit an error.
Finally, gengtype rejects root types marked GTY((user)) that are not
first class pointers.
2012-11-16 Diego Novillo <dnovillo@google.com>
VEC API overhaul (http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec)
* vec.c (register_overhead): Convert it into
member function of vec_prefix.
(release_overhead): Likewise.
(calculate_allocation): Likewise.
(vec_heap_free): Remove.
(vec_gc_o_reserve_1): Remove.
(vec_heap_o_reserve_1): Remove.
(vec_stack_o_reserve_1): Remove.
(vec_stack_o_reserve_exact): Remove.
(register_stack_vec): New.
(stack_vec_register_index): New.
(unregister_stack_vec): New.
(vec_assert_fail): Remove.
* vec.h: Conditionally include ggc.h. Document conditional
hackery.
Update top-level documentation.
(ALONE_VEC_CHECK_INFO): Remove.
(VEC_CHECK_INFO): Remove.
(ALONE_VEC_CHECK_DECL): Remove.
(VEC_CHECK_DECL): Remove.
(ALONE_VEC_CHECK_PASS): Remove.
(VEC_CHECK_PASS): Remove.
(VEC_ASSERT): Remove.
(vec_prefix): Add friends va_gc, va_gc_atomic, va_heap and
va_stack.
Mark fields alloc_ and num_ as protected.
(struct vec_t): Remove. Remove all function members.
(struct vl_embed): Declare.
(struct vl_ptr): Declare.
(free): Remove.
(reserve_exact): Remove.
(reserve): Remove.
(safe_splice): Remove.
(safe_push): Remove.
(safe_grow): Remove.
(safe_grow_cleared): Remove.
(safe_insert): Remove.
(DEF_VEC_I): Remove.
(DEF_VEC_ALLOC_I): Remove.
(DEF_VEC_P): Remove.
(DEF_VEC_ALLOC_P): Remove.
(DEF_VEC_O): Remove.
(DEF_VEC_ALLOC_O): Remove.
(DEF_VEC_ALLOC_P_STACK): Remove.
(DEF_VEC_ALLOC_O_STACK): Remove.
(DEF_VEC_ALLOC_I_STACK): Remove.
(DEF_VEC_A): Remove.
(DEF_VEC_ALLOC_A): Remove.
(vec_stack_p_reserve_exact_1): Remove.
(vec_stack_o_reserve): Remove.
(vec_stack_o_reserve_exact): Remove.
(VEC_length): Remove.
(VEC_empty): Remove.
(VEC_address): Remove.
(vec_address): Remove.
(VEC_last): Remove.
(VEC_index): Remove.
(VEC_iterate): Remove.
(VEC_embedded_size): Remove.
(VEC_embedded_init): Remove.
(VEC_free): Remove.
(VEC_copy): Remove.
(VEC_space): Remove.
(VEC_reserve): Remove.
(VEC_reserve_exact): Remove.
(VEC_splice): Remove.
(VEC_safe_splice): Remove.
(VEC_quick_push): Remove.
(VEC_safe_push): Remove.
(VEC_pop): Remove.
(VEC_truncate): Remove.
(VEC_safe_grow): Remove.
(VEC_replace): Remove.
(VEC_quick_insert): Remove.
(VEC_safe_insert): Remove.
(VEC_ordered_remove): Remove.
(VEC_unordered_remove): Remove.
(VEC_block_remove): Remove.
(VEC_lower_bound): Remove.
(VEC_alloc): Remove.
(VEC_qsort): Remove.
(va_heap): Declare.
(va_heap::default_layout): New typedef to vl_ptr.
(va_heap::reserve): New.
(va_heap::release): New.
(va_gc): Declare.
(va_gc::default_layout): New typedef to vl_embed.
(va_gc::reserve): New.
(va_gc::release): New.
(va_gc_atomic): Declare. Inherit from va_gc.
(va_stack): Declare.
(va_stack::default_layout): New typedef to vl_ptr.
(va_stack::alloc): New.
(va_stack::reserve): New.
(va_stack::release): New.
(register_stack_vec): Declare.
(stack_vec_register_index): Declare.
(unregister_stack_vec): Declare.
(vec<T, A = va_heap, L = typename A::default_layout>): Declare
empty vec template.
(vec<T, A, vl_embed>): Partial specialization for embedded
layout.
(vec<T, A, vl_embed>::allocated): New.
(vec<T, A, vl_embed>::length): New.
(vec<T, A, vl_embed>::is_empty): New.
(vec<T, A, vl_embed>::address): New.
(vec<T, A, vl_embed>::operator[]): New.
(vec<T, A, vl_embed>::last New.
(vec<T, A, vl_embed>::space): New.
(vec<T, A, vl_embed>::iterate): New.
(vec<T, A, vl_embed>::iterate): New.
(vec<T, A, vl_embed>::copy): New.
(vec<T, A, vl_embed>::splice): New.
(vec<T, A, vl_embed>::quick_push New.
(vec<T, A, vl_embed>::pop New.
(vec<T, A, vl_embed>::truncate): New.
(vec<T, A, vl_embed>::quick_insert): New.
(vec<T, A, vl_embed>::ordered_remove): New.
(vec<T, A, vl_embed>::unordered_remove): New.
(vec<T, A, vl_embed>::block_remove): New.
(vec<T, A, vl_embed>::qsort): New.
(vec<T, A, vl_embed>::lower_bound): New.
(vec<T, A, vl_embed>::embedded_size): New.
(vec<T, A, vl_embed>::embedded_init): New.
(vec<T, A, vl_embed>::quick_grow): New.
(vec<T, A, vl_embed>::quick_grow_cleared): New.
(vec_safe_space): New.
(vec_safe_length): New.
(vec_safe_address): New.
(vec_safe_is_empty): New.
(vec_safe_reserve): New.
(vec_safe_reserve_exact): New.
(vec_alloc): New.
(vec_free): New.
(vec_safe_grow): New.
(vec_safe_grow_cleared): New.
(vec_safe_iterate): New.
(vec_safe_push): New.
(vec_safe_insert): New.
(vec_safe_truncate): New.
(vec_safe_copy): New.
(vec_safe_splice): New.
(vec<T, A, vl_ptr>): New partial specialization for the space
efficient layout.
(vec<T, A, vl_ptr>::exists): New.
(vec<T, A, vl_ptr>::is_empty): New.
(vec<T, A, vl_ptr>::length): New.
(vec<T, A, vl_ptr>::address): New.
(vec<T, A, vl_ptr>::operator[]): New.
(vec<T, A, vl_ptr>::operator!=): New.
(vec<T, A, vl_ptr>::operator==): New.
(vec<T, A, vl_ptr>::last): New.
(vec<T, A, vl_ptr>::space): New.
(vec<T, A, vl_ptr>::iterate): New.
(vec<T, A, vl_ptr>::copy): New.
(vec<T, A, vl_ptr>::reserve): New.
(vec<T, A, vl_ptr>::reserve_exact): New.
(vec<T, A, vl_ptr>::splice): New.
(vec<T, A, vl_ptr>::safe_splice): New.
(vec<T, A, vl_ptr>::quick_push): New.
(vec<T, A, vl_ptr>::safe_push): New.
(vec<T, A, vl_ptr>::pop): New.
(vec<T, A, vl_ptr>::truncate): New.
(vec<T, A, vl_ptr>::safe_grow): New.
(vec<T, A, vl_ptr>::safe_grow_cleared): New.
(vec<T, A, vl_ptr>::quick_grow): New.
(vec<T, A, vl_ptr>::quick_grow_cleared): New.
(vec<T, A, vl_ptr>::quick_insert): New.
(vec<T, A, vl_ptr>::safe_insert): New.
(vec<T, A, vl_ptr>::ordered_remove): New.
(vec<T, A, vl_ptr>::unordered_remove): New.
(vec<T, A, vl_ptr>::block_remove): New.
(vec<T, A, vl_ptr>::qsort): New.
(vec<T, A, vl_ptr>::lower_bound): New.
(vec_stack_alloc): Define.
(FOR_EACH_VEC_SAFE_ELT): Define.
* vecir.h: Remove. Update all users.
* vecprim.h: Remove. Update all users.
Move uchar to coretypes.h.
* Makefile.in (VEC_H): Add $(GGC_H).
Remove vecir.h and vecprim.h dependencies everywhere.
2012-11-16 Diego Novillo <dnovillo@google.com>
* gengtype-lex.l (VEC): Remove.
Add characters in the set [\!\>\.-].
* gengtype-parse.c (token_names): Remove "VEC".
(require_template_declaration): Remove handling of VEC_TOKEN.
(type): Likewise.
Call create_user_defined_type when parsing GTY((user)).
* gengtype-state.c (type_lineloc): handle TYPE_UNDEFINED.
(write_state_undefined_type): New.
(write_state_type): Call write_state_undefined_type for
TYPE_UNDEFINED.
(read_state_type): Call read_state_undefined_type for
TYPE_UNDEFINED.
* gengtype.c (dbgprint_count_type_at): Handle TYPE_UNDEFINED.
(create_user_defined_type): Make extern.
(type_for_name): Factor out of resolve_typedef.
(create_undefined_type): New
(resolve_typedef): Call it when we cannot find a previous
typedef and the type is not a template.
(find_structure): Accept TYPE_UNDEFINED.
(set_gc_used_type): Add argument ALLOWED_UNDEFINED_TYPES,
default to false.
Emit an error for TYPE_UNDEFINED unless LEVEL is GC_UNUSED or
ALLOWED_UNDEFINED_TYPES is set.
Set ALLOWED_UNDEFINED_TYPES to true for TYPE_USER_STRUCT.
(filter_type_name): Accept templates with more than one
argument.
(output_mangled_typename): Handle TYPE_UNDEFINED
(walk_type): Likewise.
(write_types_process_field): Likewise.
(write_func_for_structure): If CHAIN_NEXT is set, ORIG_S
should not be a user-defined type.
(write_types_local_user_process_field): Handle TYPE_ARRAY,
TYPE_NONE and TYPE_UNDEFINED.
(write_types_local_process_field): Likewise.
(contains_scalar_p): Return 0 for TYPE_USER_STRUCT.
(write_root): Reject user-defined types that are not pointers.
Handle TYPE_NONE, TYPE_UNDEFINED, TYPE_UNION, TYPE_LANG_STRUCT
and TYPE_PARAM_STRUCT.
(output_typename): Handle TYPE_NONE, TYPE_UNDEFINED, and
TYPE_ARRAY.
(dump_typekind): Handle TYPE_UNDEFINED.
* gengtype.h (enum typekind): Add TYPE_UNDEFINED.
(create_user_defined_type): Declare.
(enum gty_token): Remove VEC_TOKEN.
2012-11-16 Diego Novillo <dnovillo@google.com>
Adjust for new vec API (http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec)
* coretypes.h (uchar): Define.
* alias.c: Use new vec API in vec.h.
* asan.c: Likewise.
* attribs.c: Likewise.
* basic-block.h: Likewise.
* bb-reorder.c: Likewise.
* builtins.c: Likewise.
* calls.c: Likewise.
* cfg.c: Likewise.
* cfganal.c: Likewise.
* cfgcleanup.c: Likewise.
* cfgexpand.c: Likewise.
* cfghooks.c: Likewise.
* cfghooks.h: Likewise.
* cfgloop.c: Likewise.
* cfgloop.h: Likewise.
* cfgloopanal.c: Likewise.
* cfgloopmanip.c: Likewise.
* cfgrtl.c: Likewise.
* cgraph.c: Likewise.
* cgraph.h: Likewise.
* cgraphclones.c: Likewise.
* cgraphunit.c: Likewise.
* combine.c: Likewise.
* compare-elim.c: Likewise.
* coverage.c: Likewise.
* cprop.c: Likewise.
* data-streamer.h: Likewise.
* dbxout.c: Likewise.
* dce.c: Likewise.
* df-core.c: Likewise.
* df-problems.c: Likewise.
* df-scan.c: Likewise.
* dominance.c: Likewise.
* domwalk.c: Likewise.
* domwalk.h: Likewise.
* dse.c: Likewise.
* dwarf2cfi.c: Likewise.
* dwarf2out.c: Likewise.
* dwarf2out.h: Likewise.
* emit-rtl.c: Likewise.
* except.c: Likewise.
* except.h: Likewise.
* expr.c: Likewise.
* expr.h: Likewise.
* final.c: Likewise.
* fold-const.c: Likewise.
* function.c: Likewise.
* function.h: Likewise.
* fwprop.c: Likewise.
* gcc.c: Likewise.
* gcse.c: Likewise.
* genattr.c: Likewise.
* genattrtab.c: Likewise.
* genautomata.c: Likewise.
* genextract.c: Likewise.
* genopinit.c: Likewise
* ggc-common.c: Likewise.
* ggc.h: Likewise.
* gimple-low.c: Likewise.
* gimple-ssa-strength-reduction.c: Likewise.
* gimple-streamer-in.c: Likewise.
* gimple.c: Likewise.
* gimple.h: Likewise.
* gimplify.c: Likewise.
* graph.c: Likewise.
* graphds.c: Likewise.
* graphds.h: Likewise.
* graphite-blocking.c: Likewise.
* graphite-clast-to-gimple.c: Likewise.
* graphite-dependences.c: Likewise.
* graphite-interchange.c: Likewise.
* graphite-optimize-isl.c: Likewise.
* graphite-poly.c: Likewise.
* graphite-poly.h: Likewise.
* graphite-scop-detection.c: Likewise.
* graphite-scop-detection.h: Likewise.
* graphite-sese-to-poly.c: Likewise.
* graphite.c: Likewise.
* godump.c: Likewise.
* haifa-sched.c: Likewise.
* hw-doloop.c: Likewise.
* hw-doloop.h: Likewise.
* ifcvt.c: Likewise.
* insn-addr.h: Likewise.
* ipa-cp.c: Likewise.
* ipa-inline-analysis.c: Likewise.
* ipa-inline-transform.c: Likewise.
* ipa-inline.c: Likewise.
* ipa-inline.h: Likewise.
* ipa-prop.c: Likewise.
* ipa-prop.h: Likewise.
* ipa-pure-const.c: Likewise.
* ipa-ref-inline.h: Likewise.
* ipa-ref.c: Likewise.
* ipa-ref.h: Likewise.
* ipa-reference.c: Likewise.
* ipa-split.c: Likewise.
* ipa-utils.c: Likewise.
* ipa-utils.h: Likewise.
* ipa.c: Likewise.
* ira-build.c: Likewise.
* ira-color.c: Likewise.
* ira-emit.c: Likewise.
* ira-int.h: Likewise.
* ira.c: Likewise.
* loop-invariant.c: Likewise.
* loop-unroll.c: Likewise.
* lower-subreg.c: Likewise.
* lra-lives.c: Likewise.
* lra.c: Likewise.
* lto-cgraph.c: Likewise.
* lto-section-out.c: Likewise.
* lto-streamer-in.c: Likewise.
* lto-streamer-out.c: Likewise.
* lto-streamer.h: Likewise.
* lto-symtab.c: Likewise.
* mcf.c: Likewise.
* modulo-sched.c: Likewise.
* omp-low.c: Likewise.
* opts-common.c: Likewise.
* opts-global.c: Likewise.
* opts.c: Likewise.
* opts.h: Likewise.
* passes.c: Likewise.
* predict.c: Likewise.
* print-tree.c: Likewise.
* profile.c: Likewise.
* profile.h: Likewise.
* read-rtl.c: Likewise.
* ree.c: Likewise.
* reg-stack.c: Likewise.
* regrename.c: Likewise.
* regrename.h: Likewise.
* reload.c: Likewise.
* reload.h: Likewise.
* reload1.c: Likewise.
* rtl.h: Likewise.
* sched-deps.c: Likewise.
* sched-int.h: Likewise.
* sdbout.c: Likewise.
* sel-sched-dump.c: Likewise.
* sel-sched-ir.c: Likewise.
* sel-sched-ir.h: Likewise.
* sel-sched.c: Likewise.
* sese.c: Likewise.
* sese.h: Likewise.
* statistics.h: Likewise.
* stmt.c: Likewise.
* stor-layout.c: Likewise.
* store-motion.c: Likewise.
* tlink.c: Likewise.
* toplev.c: Likewise.
* trans-mem.c: Likewise.
* tree-browser.c: Likewise.
* tree-call-cdce.c: Likewise.
* tree-cfg.c: Likewise.
* tree-cfgcleanup.c: Likewise.
* tree-chrec.c: Likewise.
* tree-chrec.h: Likewise.
* tree-complex.c: Likewise.
* tree-data-ref.c: Likewise.
* tree-data-ref.h: Likewise.
* tree-dfa.c: Likewise.
* tree-diagnostic.c: Likewise.
* tree-dump.c: Likewise.
* tree-eh.c: Likewise.
* tree-emutls.c: Likewise.
* tree-flow.h: Likewise.
* tree-if-conv.c: Likewise.
* tree-inline.c: Likewise.
* tree-inline.h: Likewise.
* tree-into-ssa.c: Likewise.
* tree-iterator.c: Likewise.
* tree-loop-distribution.c: Likewise.
* tree-mudflap.c: Likewise.
* tree-optimize.c: Likewise.
* tree-outof-ssa.c: Likewise.
* tree-parloops.c: Likewise.
* tree-phinodes.c: Likewise.
* tree-predcom.c: Likewise.
* tree-pretty-print.c: Likewise.
* tree-scalar-evolution.c: Likewise.
* tree-sra.c: Likewise.
* tree-ssa-address.c: Likewise.
* tree-ssa-alias.c: Likewise.
* tree-ssa-ccp.c: Likewise.
* tree-ssa-coalesce.c: Likewise.
* tree-ssa-dce.c: Likewise.
* tree-ssa-dom.c: Likewise.
* tree-ssa-forwprop.c: Likewise.
* tree-ssa-live.c: Likewise.
* tree-ssa-live.h: Likewise.
* tree-ssa-loop-im.c: Likewise.
* tree-ssa-loop-ivcanon.c: Likewise.
* tree-ssa-loop-ivopts.c: Likewise.
* tree-ssa-loop-manip.c: Likewise.
* tree-ssa-loop-niter.c: Likewise.
* tree-ssa-loop-prefetch.c: Likewise.
* tree-ssa-math-opts.c: Likewise.
* tree-ssa-operands.c: Likewise.
* tree-ssa-phiopt.c: Likewise.
* tree-ssa-phiprop.c: Likewise.
* tree-ssa-pre.c: Likewise.
* tree-ssa-propagate.c: Likewise.
* tree-ssa-reassoc.c: Likewise.
* tree-ssa-sccvn.c: Likewise.
* tree-ssa-sccvn.h: Likewise.
* tree-ssa-strlen.c: Likewise.
* tree-ssa-structalias.c: Likewise.
* tree-ssa-tail-merge.c: Likewise.
* tree-ssa-threadedge.c: Likewise.
* tree-ssa-threadupdate.c: Likewise.
* tree-ssa-uncprop.c: Likewise.
* tree-ssa-uninit.c: Likewise.
* tree-ssa.c: Likewise.
* tree-ssanames.c: Likewise.
* tree-stdarg.c: Likewise.
* tree-streamer-in.c: Likewise.
* tree-streamer-out.c: Likewise.
* tree-streamer.c: Likewise.
* tree-streamer.h: Likewise.
* tree-switch-conversion.c: Likewise.
* tree-vect-data-refs.c: Likewise.
* tree-vect-generic.c: Likewise.
* tree-vect-loop-manip.c: Likewise.
* tree-vect-loop.c: Likewise.
* tree-vect-patterns.c: Likewise.
* tree-vect-slp.c: Likewise.
* tree-vect-stmts.c: Likewise.
* tree-vectorizer.c: Likewise.
* tree-vectorizer.h: Likewise.
* tree-vrp.c: Likewise.
* tree.c: Likewise.
* tree.h: Likewise.
* value-prof.c: Likewise.
* value-prof.h: Likewise.
* var-tracking.c: Likewise.
* varasm.c: Likewise.
* varpool.c: Likewise.
* vmsdbgout.c: Likewise.
* config/bfin/bfin.c: Likewise.
* config/c6x/c6x.c: Likewise.
* config/darwin.c: Likewise.
* config/i386/i386.c: Likewise.
* config/ia64/ia64.c: Likewise.
* config/mep/mep.c: Likewise.
* config/mips/mips.c: Likewise.
* config/pa/pa.c: Likewise.
* config/rs6000/rs6000-c.c: Likewise.
* config/rs6000/rs6000.c: Likewise.
* config/rx/rx.c: Likewise.
* config/spu/spu-c.c: Likewise.
* config/vms/vms.c: Likewise.
* config/vxworks.c: Likewise.
* config/epiphany/resolve-sw-modes.c: Likewise.
From-SVN: r193595
2012-11-18 03:54:30 +01:00
|
|
|
|
FOR_EACH_VEC_ELT (cand_vec, i, c)
|
2012-06-26 18:27:50 +02:00
|
|
|
|
dump_candidate (c);
|
|
|
|
|
}
|
|
|
|
|
|
2012-08-01 15:02:38 +02:00
|
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|
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/* Callback used to dump the candidate chains hash table. */
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
2013-04-26 02:28:35 +02:00
|
|
|
|
int
|
|
|
|
|
ssa_base_cand_dump_callback (cand_chain **slot, void *ignored ATTRIBUTE_UNUSED)
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
2013-04-26 02:28:35 +02:00
|
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|
|
const_cand_chain_t chain = *slot;
|
2012-08-01 15:02:38 +02:00
|
|
|
|
cand_chain_t p;
|
2012-06-26 18:27:50 +02:00
|
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|
|
|
2012-08-01 16:00:35 +02:00
|
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|
print_generic_expr (dump_file, chain->base_expr, 0);
|
2012-08-01 15:02:38 +02:00
|
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|
|
fprintf (dump_file, " -> %d", chain->cand->cand_num);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
2012-08-01 15:02:38 +02:00
|
|
|
|
for (p = chain->next; p; p = p->next)
|
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|
fprintf (dump_file, " -> %d", p->cand->cand_num);
|
2012-06-26 18:27:50 +02:00
|
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|
|
2012-08-01 15:02:38 +02:00
|
|
|
|
fputs ("\n", dump_file);
|
|
|
|
|
return 1;
|
|
|
|
|
}
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
2012-08-01 15:02:38 +02:00
|
|
|
|
/* Dump the candidate chains. */
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
2012-08-01 15:02:38 +02:00
|
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|
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static void
|
|
|
|
|
dump_cand_chains (void)
|
|
|
|
|
{
|
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|
|
fprintf (dump_file, "\nStrength reduction candidate chains:\n\n");
|
2013-04-26 02:28:35 +02:00
|
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|
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base_cand_map.traverse_noresize <void *, ssa_base_cand_dump_callback> (NULL);
|
2012-06-26 18:27:50 +02:00
|
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|
|
fputs ("\n", dump_file);
|
|
|
|
|
}
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
|
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|
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/* Dump the increment vector for debug. */
|
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|
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static void
|
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|
dump_incr_vec (void)
|
|
|
|
|
{
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|
|
|
if (dump_file && (dump_flags & TDF_DETAILS))
|
|
|
|
|
{
|
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|
|
unsigned i;
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|
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|
|
fprintf (dump_file, "\nIncrement vector:\n\n");
|
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|
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for (i = 0; i < incr_vec_len; i++)
|
|
|
|
|
{
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|
|
fprintf (dump_file, "%3d increment: ", i);
|
|
|
|
|
dump_double_int (dump_file, incr_vec[i].incr, false);
|
|
|
|
|
fprintf (dump_file, "\n count: %d", incr_vec[i].count);
|
|
|
|
|
fprintf (dump_file, "\n cost: %d", incr_vec[i].cost);
|
|
|
|
|
fputs ("\n initializer: ", dump_file);
|
|
|
|
|
print_generic_expr (dump_file, incr_vec[i].initializer, 0);
|
|
|
|
|
fputs ("\n\n", dump_file);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
2012-08-01 15:02:38 +02:00
|
|
|
|
/* Replace *EXPR in candidate C with an equivalent strength-reduced
|
|
|
|
|
data reference. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
replace_ref (tree *expr, slsr_cand_t c)
|
|
|
|
|
{
|
2012-08-01 16:00:35 +02:00
|
|
|
|
tree add_expr = fold_build2 (POINTER_PLUS_EXPR, TREE_TYPE (c->base_expr),
|
|
|
|
|
c->base_expr, c->stride);
|
2012-08-01 15:02:38 +02:00
|
|
|
|
tree mem_ref = fold_build2 (MEM_REF, TREE_TYPE (*expr), add_expr,
|
|
|
|
|
double_int_to_tree (c->cand_type, c->index));
|
|
|
|
|
|
|
|
|
|
/* Gimplify the base addressing expression for the new MEM_REF tree. */
|
|
|
|
|
gimple_stmt_iterator gsi = gsi_for_stmt (c->cand_stmt);
|
|
|
|
|
TREE_OPERAND (mem_ref, 0)
|
|
|
|
|
= force_gimple_operand_gsi (&gsi, TREE_OPERAND (mem_ref, 0),
|
|
|
|
|
/*simple_p=*/true, NULL,
|
|
|
|
|
/*before=*/true, GSI_SAME_STMT);
|
|
|
|
|
copy_ref_info (mem_ref, *expr);
|
|
|
|
|
*expr = mem_ref;
|
|
|
|
|
update_stmt (c->cand_stmt);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Replace CAND_REF candidate C, each sibling of candidate C, and each
|
|
|
|
|
dependent of candidate C with an equivalent strength-reduced data
|
|
|
|
|
reference. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
replace_refs (slsr_cand_t c)
|
|
|
|
|
{
|
|
|
|
|
if (gimple_vdef (c->cand_stmt))
|
|
|
|
|
{
|
|
|
|
|
tree *lhs = gimple_assign_lhs_ptr (c->cand_stmt);
|
|
|
|
|
replace_ref (lhs, c);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
tree *rhs = gimple_assign_rhs1_ptr (c->cand_stmt);
|
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|
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|
replace_ref (rhs, c);
|
|
|
|
|
}
|
|
|
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|
|
|
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|
|
if (c->sibling)
|
|
|
|
|
replace_refs (lookup_cand (c->sibling));
|
|
|
|
|
|
|
|
|
|
if (c->dependent)
|
|
|
|
|
replace_refs (lookup_cand (c->dependent));
|
|
|
|
|
}
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
/* Return TRUE if candidate C is dependent upon a PHI. */
|
|
|
|
|
|
|
|
|
|
static bool
|
|
|
|
|
phi_dependent_cand_p (slsr_cand_t c)
|
|
|
|
|
{
|
|
|
|
|
/* A candidate is not necessarily dependent upon a PHI just because
|
|
|
|
|
it has a phi definition for its base name. It may have a basis
|
|
|
|
|
that relies upon the same phi definition, in which case the PHI
|
|
|
|
|
is irrelevant to this candidate. */
|
|
|
|
|
return (c->def_phi
|
|
|
|
|
&& c->basis
|
|
|
|
|
&& lookup_cand (c->basis)->def_phi != c->def_phi);
|
|
|
|
|
}
|
|
|
|
|
|
2012-06-26 18:27:50 +02:00
|
|
|
|
/* Calculate the increment required for candidate C relative to
|
|
|
|
|
its basis. */
|
|
|
|
|
|
|
|
|
|
static double_int
|
|
|
|
|
cand_increment (slsr_cand_t c)
|
|
|
|
|
{
|
|
|
|
|
slsr_cand_t basis;
|
|
|
|
|
|
|
|
|
|
/* If the candidate doesn't have a basis, just return its own
|
|
|
|
|
index. This is useful in record_increments to help us find
|
2013-05-03 20:56:39 +02:00
|
|
|
|
an existing initializer. Also, if the candidate's basis is
|
|
|
|
|
hidden by a phi, then its own index will be the increment
|
|
|
|
|
from the newly introduced phi basis. */
|
|
|
|
|
if (!c->basis || phi_dependent_cand_p (c))
|
2012-06-26 18:27:50 +02:00
|
|
|
|
return c->index;
|
|
|
|
|
|
|
|
|
|
basis = lookup_cand (c->basis);
|
2012-08-01 16:00:35 +02:00
|
|
|
|
gcc_assert (operand_equal_p (c->base_expr, basis->base_expr, 0));
|
2012-09-07 02:06:35 +02:00
|
|
|
|
return c->index - basis->index;
|
2012-06-26 18:27:50 +02:00
|
|
|
|
}
|
|
|
|
|
|
2012-08-08 03:35:22 +02:00
|
|
|
|
/* Calculate the increment required for candidate C relative to
|
|
|
|
|
its basis. If we aren't going to generate pointer arithmetic
|
|
|
|
|
for this candidate, return the absolute value of that increment
|
|
|
|
|
instead. */
|
|
|
|
|
|
|
|
|
|
static inline double_int
|
|
|
|
|
cand_abs_increment (slsr_cand_t c)
|
|
|
|
|
{
|
|
|
|
|
double_int increment = cand_increment (c);
|
|
|
|
|
|
2012-09-07 02:06:35 +02:00
|
|
|
|
if (!address_arithmetic_p && increment.is_negative ())
|
|
|
|
|
increment = -increment;
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
|
|
|
|
return increment;
|
|
|
|
|
}
|
|
|
|
|
|
2012-06-26 18:27:50 +02:00
|
|
|
|
/* Return TRUE iff candidate C has already been replaced under
|
|
|
|
|
another interpretation. */
|
|
|
|
|
|
|
|
|
|
static inline bool
|
|
|
|
|
cand_already_replaced (slsr_cand_t c)
|
|
|
|
|
{
|
|
|
|
|
return (gimple_bb (c->cand_stmt) == 0);
|
|
|
|
|
}
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
/* Common logic used by replace_unconditional_candidate and
|
|
|
|
|
replace_conditional_candidate. */
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
|
|
|
|
static void
|
2013-05-07 14:44:50 +02:00
|
|
|
|
replace_mult_candidate (slsr_cand_t c, tree basis_name, double_int bump)
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
2013-05-03 20:56:39 +02:00
|
|
|
|
tree target_type = TREE_TYPE (gimple_assign_lhs (c->cand_stmt));
|
|
|
|
|
enum tree_code cand_code = gimple_assign_rhs_code (c->cand_stmt);
|
|
|
|
|
|
2012-06-26 18:27:50 +02:00
|
|
|
|
/* It is highly unlikely, but possible, that the resulting
|
|
|
|
|
bump doesn't fit in a HWI. Abandon the replacement
|
2013-05-03 20:56:39 +02:00
|
|
|
|
in this case. This does not affect siblings or dependents
|
|
|
|
|
of C. Restriction to signed HWI is conservative for unsigned
|
|
|
|
|
types but allows for safe negation without twisted logic. */
|
|
|
|
|
if (bump.fits_shwi ()
|
|
|
|
|
&& bump.to_shwi () != HOST_WIDE_INT_MIN
|
|
|
|
|
/* It is not useful to replace casts, copies, or adds of
|
|
|
|
|
an SSA name and a constant. */
|
|
|
|
|
&& cand_code != MODIFY_EXPR
|
|
|
|
|
&& cand_code != NOP_EXPR
|
|
|
|
|
&& cand_code != PLUS_EXPR
|
|
|
|
|
&& cand_code != POINTER_PLUS_EXPR
|
|
|
|
|
&& cand_code != MINUS_EXPR)
|
|
|
|
|
{
|
|
|
|
|
enum tree_code code = PLUS_EXPR;
|
|
|
|
|
tree bump_tree;
|
|
|
|
|
gimple stmt_to_print = NULL;
|
|
|
|
|
|
|
|
|
|
/* If the basis name and the candidate's LHS have incompatible
|
|
|
|
|
types, introduce a cast. */
|
|
|
|
|
if (!useless_type_conversion_p (target_type, TREE_TYPE (basis_name)))
|
2013-05-07 14:44:50 +02:00
|
|
|
|
basis_name = introduce_cast_before_cand (c, target_type, basis_name);
|
2013-05-03 20:56:39 +02:00
|
|
|
|
if (bump.is_negative ())
|
|
|
|
|
{
|
|
|
|
|
code = MINUS_EXPR;
|
|
|
|
|
bump = -bump;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
bump_tree = double_int_to_tree (target_type, bump);
|
|
|
|
|
|
|
|
|
|
if (dump_file && (dump_flags & TDF_DETAILS))
|
|
|
|
|
{
|
|
|
|
|
fputs ("Replacing: ", dump_file);
|
|
|
|
|
print_gimple_stmt (dump_file, c->cand_stmt, 0, 0);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (bump.is_zero ())
|
|
|
|
|
{
|
|
|
|
|
tree lhs = gimple_assign_lhs (c->cand_stmt);
|
|
|
|
|
gimple copy_stmt = gimple_build_assign (lhs, basis_name);
|
|
|
|
|
gimple_stmt_iterator gsi = gsi_for_stmt (c->cand_stmt);
|
|
|
|
|
gimple_set_location (copy_stmt, gimple_location (c->cand_stmt));
|
|
|
|
|
gsi_replace (&gsi, copy_stmt, false);
|
2013-07-30 03:01:35 +02:00
|
|
|
|
c->cand_stmt = copy_stmt;
|
2013-05-03 20:56:39 +02:00
|
|
|
|
if (dump_file && (dump_flags & TDF_DETAILS))
|
|
|
|
|
stmt_to_print = copy_stmt;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
tree rhs1, rhs2;
|
|
|
|
|
if (cand_code != NEGATE_EXPR) {
|
|
|
|
|
rhs1 = gimple_assign_rhs1 (c->cand_stmt);
|
|
|
|
|
rhs2 = gimple_assign_rhs2 (c->cand_stmt);
|
|
|
|
|
}
|
|
|
|
|
if (cand_code != NEGATE_EXPR
|
|
|
|
|
&& ((operand_equal_p (rhs1, basis_name, 0)
|
|
|
|
|
&& operand_equal_p (rhs2, bump_tree, 0))
|
|
|
|
|
|| (operand_equal_p (rhs1, bump_tree, 0)
|
|
|
|
|
&& operand_equal_p (rhs2, basis_name, 0))))
|
|
|
|
|
{
|
|
|
|
|
if (dump_file && (dump_flags & TDF_DETAILS))
|
|
|
|
|
{
|
|
|
|
|
fputs ("(duplicate, not actually replacing)", dump_file);
|
|
|
|
|
stmt_to_print = c->cand_stmt;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
gimple_stmt_iterator gsi = gsi_for_stmt (c->cand_stmt);
|
|
|
|
|
gimple_assign_set_rhs_with_ops (&gsi, code,
|
|
|
|
|
basis_name, bump_tree);
|
|
|
|
|
update_stmt (gsi_stmt (gsi));
|
2013-08-03 16:37:26 +02:00
|
|
|
|
c->cand_stmt = gsi_stmt (gsi);
|
2013-05-03 20:56:39 +02:00
|
|
|
|
if (dump_file && (dump_flags & TDF_DETAILS))
|
|
|
|
|
stmt_to_print = gsi_stmt (gsi);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (dump_file && (dump_flags & TDF_DETAILS))
|
|
|
|
|
{
|
|
|
|
|
fputs ("With: ", dump_file);
|
|
|
|
|
print_gimple_stmt (dump_file, stmt_to_print, 0, 0);
|
|
|
|
|
fputs ("\n", dump_file);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Replace candidate C with an add or subtract. Note that we only
|
|
|
|
|
operate on CAND_MULTs with known strides, so we will never generate
|
|
|
|
|
a POINTER_PLUS_EXPR. Each candidate X = (B + i) * S is replaced by
|
|
|
|
|
X = Y + ((i - i') * S), as described in the module commentary. The
|
|
|
|
|
folded value ((i - i') * S) is referred to here as the "bump." */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
replace_unconditional_candidate (slsr_cand_t c)
|
|
|
|
|
{
|
|
|
|
|
slsr_cand_t basis;
|
|
|
|
|
double_int stride, bump;
|
|
|
|
|
|
|
|
|
|
if (cand_already_replaced (c))
|
2012-06-26 18:27:50 +02:00
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
basis = lookup_cand (c->basis);
|
2013-05-03 20:56:39 +02:00
|
|
|
|
stride = tree_to_double_int (c->stride);
|
|
|
|
|
bump = cand_increment (c) * stride;
|
|
|
|
|
|
2013-05-07 14:44:50 +02:00
|
|
|
|
replace_mult_candidate (c, gimple_assign_lhs (basis->cand_stmt), bump);
|
2013-05-03 20:56:39 +02:00
|
|
|
|
}
|
|
|
|
|
|
2013-05-07 16:11:21 +02:00
|
|
|
|
/* Return the index in the increment vector of the given INCREMENT,
|
|
|
|
|
or -1 if not found. The latter can occur if more than
|
|
|
|
|
MAX_INCR_VEC_LEN increments have been found. */
|
2013-05-03 20:56:39 +02:00
|
|
|
|
|
2013-05-07 16:11:21 +02:00
|
|
|
|
static inline int
|
2013-05-03 20:56:39 +02:00
|
|
|
|
incr_vec_index (double_int increment)
|
|
|
|
|
{
|
|
|
|
|
unsigned i;
|
|
|
|
|
|
|
|
|
|
for (i = 0; i < incr_vec_len && increment != incr_vec[i].incr; i++)
|
|
|
|
|
;
|
|
|
|
|
|
2013-05-07 16:11:21 +02:00
|
|
|
|
if (i < incr_vec_len)
|
|
|
|
|
return i;
|
|
|
|
|
else
|
|
|
|
|
return -1;
|
2013-05-03 20:56:39 +02:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Create a new statement along edge E to add BASIS_NAME to the product
|
|
|
|
|
of INCREMENT and the stride of candidate C. Create and return a new
|
|
|
|
|
SSA name from *VAR to be used as the LHS of the new statement.
|
|
|
|
|
KNOWN_STRIDE is true iff C's stride is a constant. */
|
|
|
|
|
|
|
|
|
|
static tree
|
|
|
|
|
create_add_on_incoming_edge (slsr_cand_t c, tree basis_name,
|
|
|
|
|
double_int increment, edge e, location_t loc,
|
|
|
|
|
bool known_stride)
|
|
|
|
|
{
|
|
|
|
|
basic_block insert_bb;
|
|
|
|
|
gimple_stmt_iterator gsi;
|
|
|
|
|
tree lhs, basis_type;
|
|
|
|
|
gimple new_stmt;
|
|
|
|
|
|
|
|
|
|
/* If the add candidate along this incoming edge has the same
|
|
|
|
|
index as C's hidden basis, the hidden basis represents this
|
|
|
|
|
edge correctly. */
|
|
|
|
|
if (increment.is_zero ())
|
|
|
|
|
return basis_name;
|
|
|
|
|
|
|
|
|
|
basis_type = TREE_TYPE (basis_name);
|
|
|
|
|
lhs = make_temp_ssa_name (basis_type, NULL, "slsr");
|
|
|
|
|
|
|
|
|
|
if (known_stride)
|
2012-11-20 19:28:09 +01:00
|
|
|
|
{
|
2013-05-03 20:56:39 +02:00
|
|
|
|
tree bump_tree;
|
|
|
|
|
enum tree_code code = PLUS_EXPR;
|
|
|
|
|
double_int bump = increment * tree_to_double_int (c->stride);
|
|
|
|
|
if (bump.is_negative ())
|
|
|
|
|
{
|
|
|
|
|
code = MINUS_EXPR;
|
|
|
|
|
bump = -bump;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
bump_tree = double_int_to_tree (basis_type, bump);
|
|
|
|
|
new_stmt = gimple_build_assign_with_ops (code, lhs, basis_name,
|
|
|
|
|
bump_tree);
|
2012-11-20 19:28:09 +01:00
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
2013-05-07 16:11:21 +02:00
|
|
|
|
int i;
|
2013-05-03 20:56:39 +02:00
|
|
|
|
bool negate_incr = (!address_arithmetic_p && increment.is_negative ());
|
|
|
|
|
i = incr_vec_index (negate_incr ? -increment : increment);
|
2013-05-07 16:11:21 +02:00
|
|
|
|
gcc_assert (i >= 0);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
if (incr_vec[i].initializer)
|
|
|
|
|
{
|
|
|
|
|
enum tree_code code = negate_incr ? MINUS_EXPR : PLUS_EXPR;
|
|
|
|
|
new_stmt = gimple_build_assign_with_ops (code, lhs, basis_name,
|
|
|
|
|
incr_vec[i].initializer);
|
|
|
|
|
}
|
|
|
|
|
else if (increment.is_one ())
|
|
|
|
|
new_stmt = gimple_build_assign_with_ops (PLUS_EXPR, lhs, basis_name,
|
|
|
|
|
c->stride);
|
|
|
|
|
else if (increment.is_minus_one ())
|
|
|
|
|
new_stmt = gimple_build_assign_with_ops (MINUS_EXPR, lhs, basis_name,
|
|
|
|
|
c->stride);
|
|
|
|
|
else
|
|
|
|
|
gcc_unreachable ();
|
2012-06-26 18:27:50 +02:00
|
|
|
|
}
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
insert_bb = single_succ_p (e->src) ? e->src : split_edge (e);
|
|
|
|
|
gsi = gsi_last_bb (insert_bb);
|
|
|
|
|
|
|
|
|
|
if (!gsi_end_p (gsi) && is_ctrl_stmt (gsi_stmt (gsi)))
|
|
|
|
|
gsi_insert_before (&gsi, new_stmt, GSI_NEW_STMT);
|
|
|
|
|
else
|
|
|
|
|
gsi_insert_after (&gsi, new_stmt, GSI_NEW_STMT);
|
|
|
|
|
|
|
|
|
|
gimple_set_location (new_stmt, loc);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
|
|
|
|
if (dump_file && (dump_flags & TDF_DETAILS))
|
|
|
|
|
{
|
2013-05-03 20:56:39 +02:00
|
|
|
|
fprintf (dump_file, "Inserting in block %d: ", insert_bb->index);
|
|
|
|
|
print_gimple_stmt (dump_file, new_stmt, 0, 0);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
}
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
return lhs;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Given a candidate C with BASIS_NAME being the LHS of C's basis which
|
|
|
|
|
is hidden by the phi node FROM_PHI, create a new phi node in the same
|
|
|
|
|
block as FROM_PHI. The new phi is suitable for use as a basis by C,
|
|
|
|
|
with its phi arguments representing conditional adjustments to the
|
|
|
|
|
hidden basis along conditional incoming paths. Those adjustments are
|
|
|
|
|
made by creating add statements (and sometimes recursively creating
|
|
|
|
|
phis) along those incoming paths. LOC is the location to attach to
|
|
|
|
|
the introduced statements. KNOWN_STRIDE is true iff C's stride is a
|
|
|
|
|
constant. */
|
|
|
|
|
|
|
|
|
|
static tree
|
|
|
|
|
create_phi_basis (slsr_cand_t c, gimple from_phi, tree basis_name,
|
|
|
|
|
location_t loc, bool known_stride)
|
|
|
|
|
{
|
|
|
|
|
int i;
|
|
|
|
|
tree name, phi_arg;
|
|
|
|
|
gimple phi;
|
|
|
|
|
vec<tree> phi_args;
|
|
|
|
|
slsr_cand_t basis = lookup_cand (c->basis);
|
|
|
|
|
int nargs = gimple_phi_num_args (from_phi);
|
|
|
|
|
basic_block phi_bb = gimple_bb (from_phi);
|
|
|
|
|
slsr_cand_t phi_cand = base_cand_from_table (gimple_phi_result (from_phi));
|
|
|
|
|
phi_args.create (nargs);
|
|
|
|
|
|
|
|
|
|
/* Process each argument of the existing phi that represents
|
|
|
|
|
conditionally-executed add candidates. */
|
|
|
|
|
for (i = 0; i < nargs; i++)
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
2013-05-03 20:56:39 +02:00
|
|
|
|
edge e = (*phi_bb->preds)[i];
|
|
|
|
|
tree arg = gimple_phi_arg_def (from_phi, i);
|
|
|
|
|
tree feeding_def;
|
|
|
|
|
|
|
|
|
|
/* If the phi argument is the base name of the CAND_PHI, then
|
|
|
|
|
this incoming arc should use the hidden basis. */
|
|
|
|
|
if (operand_equal_p (arg, phi_cand->base_expr, 0))
|
|
|
|
|
if (basis->index.is_zero ())
|
|
|
|
|
feeding_def = gimple_assign_lhs (basis->cand_stmt);
|
|
|
|
|
else
|
|
|
|
|
{
|
2013-05-06 15:31:39 +02:00
|
|
|
|
double_int incr = -basis->index;
|
2013-05-03 20:56:39 +02:00
|
|
|
|
feeding_def = create_add_on_incoming_edge (c, basis_name, incr,
|
|
|
|
|
e, loc, known_stride);
|
|
|
|
|
}
|
|
|
|
|
else
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
2013-05-03 20:56:39 +02:00
|
|
|
|
gimple arg_def = SSA_NAME_DEF_STMT (arg);
|
|
|
|
|
|
|
|
|
|
/* If there is another phi along this incoming edge, we must
|
|
|
|
|
process it in the same fashion to ensure that all basis
|
|
|
|
|
adjustments are made along its incoming edges. */
|
|
|
|
|
if (gimple_code (arg_def) == GIMPLE_PHI)
|
|
|
|
|
feeding_def = create_phi_basis (c, arg_def, basis_name,
|
|
|
|
|
loc, known_stride);
|
|
|
|
|
else
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
2013-05-03 20:56:39 +02:00
|
|
|
|
slsr_cand_t arg_cand = base_cand_from_table (arg);
|
|
|
|
|
double_int diff = arg_cand->index - basis->index;
|
|
|
|
|
feeding_def = create_add_on_incoming_edge (c, basis_name, diff,
|
|
|
|
|
e, loc, known_stride);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
}
|
|
|
|
|
}
|
2013-05-03 20:56:39 +02:00
|
|
|
|
|
|
|
|
|
/* Because of recursion, we need to save the arguments in a vector
|
|
|
|
|
so we can create the PHI statement all at once. Otherwise the
|
|
|
|
|
storage for the half-created PHI can be reclaimed. */
|
|
|
|
|
phi_args.safe_push (feeding_def);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
}
|
2013-05-03 20:56:39 +02:00
|
|
|
|
|
|
|
|
|
/* Create the new phi basis. */
|
|
|
|
|
name = make_temp_ssa_name (TREE_TYPE (basis_name), NULL, "slsr");
|
|
|
|
|
phi = create_phi_node (name, phi_bb);
|
|
|
|
|
SSA_NAME_DEF_STMT (name) = phi;
|
|
|
|
|
|
|
|
|
|
FOR_EACH_VEC_ELT (phi_args, i, phi_arg)
|
|
|
|
|
{
|
|
|
|
|
edge e = (*phi_bb->preds)[i];
|
|
|
|
|
add_phi_arg (phi, phi_arg, e, loc);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
update_stmt (phi);
|
|
|
|
|
|
2012-06-26 18:27:50 +02:00
|
|
|
|
if (dump_file && (dump_flags & TDF_DETAILS))
|
|
|
|
|
{
|
2013-05-03 20:56:39 +02:00
|
|
|
|
fputs ("Introducing new phi basis: ", dump_file);
|
|
|
|
|
print_gimple_stmt (dump_file, phi, 0, 0);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
}
|
2013-05-03 20:56:39 +02:00
|
|
|
|
|
|
|
|
|
return name;
|
2012-06-26 18:27:50 +02:00
|
|
|
|
}
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
/* Given a candidate C whose basis is hidden by at least one intervening
|
|
|
|
|
phi, introduce a matching number of new phis to represent its basis
|
|
|
|
|
adjusted by conditional increments along possible incoming paths. Then
|
|
|
|
|
replace C as though it were an unconditional candidate, using the new
|
|
|
|
|
basis. */
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
|
|
|
|
static void
|
2013-05-03 20:56:39 +02:00
|
|
|
|
replace_conditional_candidate (slsr_cand_t c)
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
2013-05-07 14:44:50 +02:00
|
|
|
|
tree basis_name, name;
|
2013-05-03 20:56:39 +02:00
|
|
|
|
slsr_cand_t basis;
|
|
|
|
|
location_t loc;
|
|
|
|
|
double_int stride, bump;
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
/* Look up the LHS SSA name from C's basis. This will be the
|
|
|
|
|
RHS1 of the adds we will introduce to create new phi arguments. */
|
|
|
|
|
basis = lookup_cand (c->basis);
|
|
|
|
|
basis_name = gimple_assign_lhs (basis->cand_stmt);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
/* Create a new phi statement which will represent C's true basis
|
|
|
|
|
after the transformation is complete. */
|
|
|
|
|
loc = gimple_location (c->cand_stmt);
|
|
|
|
|
name = create_phi_basis (c, lookup_cand (c->def_phi)->cand_stmt,
|
|
|
|
|
basis_name, loc, KNOWN_STRIDE);
|
|
|
|
|
/* Replace C with an add of the new basis phi and a constant. */
|
|
|
|
|
stride = tree_to_double_int (c->stride);
|
|
|
|
|
bump = c->index * stride;
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
2013-05-07 14:44:50 +02:00
|
|
|
|
replace_mult_candidate (c, name, bump);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
}
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
/* Compute the expected costs of inserting basis adjustments for
|
|
|
|
|
candidate C with phi-definition PHI. The cost of inserting
|
|
|
|
|
one adjustment is given by ONE_ADD_COST. If PHI has arguments
|
|
|
|
|
which are themselves phi results, recursively calculate costs
|
|
|
|
|
for those phis as well. */
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
phi_add_costs (gimple phi, slsr_cand_t c, int one_add_cost)
|
2012-08-08 03:35:22 +02:00
|
|
|
|
{
|
|
|
|
|
unsigned i;
|
2013-05-03 20:56:39 +02:00
|
|
|
|
int cost = 0;
|
|
|
|
|
slsr_cand_t phi_cand = base_cand_from_table (gimple_phi_result (phi));
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
2013-07-30 03:01:35 +02:00
|
|
|
|
/* If we work our way back to a phi that isn't dominated by the hidden
|
|
|
|
|
basis, this isn't a candidate for replacement. Indicate this by
|
|
|
|
|
returning an unreasonably high cost. It's not easy to detect
|
|
|
|
|
these situations when determining the basis, so we defer the
|
|
|
|
|
decision until now. */
|
|
|
|
|
basic_block phi_bb = gimple_bb (phi);
|
|
|
|
|
slsr_cand_t basis = lookup_cand (c->basis);
|
|
|
|
|
basic_block basis_bb = gimple_bb (basis->cand_stmt);
|
|
|
|
|
|
|
|
|
|
if (phi_bb == basis_bb || !dominated_by_p (CDI_DOMINATORS, phi_bb, basis_bb))
|
|
|
|
|
return COST_INFINITE;
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
for (i = 0; i < gimple_phi_num_args (phi); i++)
|
|
|
|
|
{
|
|
|
|
|
tree arg = gimple_phi_arg_def (phi, i);
|
|
|
|
|
|
|
|
|
|
if (arg != phi_cand->base_expr)
|
|
|
|
|
{
|
|
|
|
|
gimple arg_def = SSA_NAME_DEF_STMT (arg);
|
|
|
|
|
|
|
|
|
|
if (gimple_code (arg_def) == GIMPLE_PHI)
|
|
|
|
|
cost += phi_add_costs (arg_def, c, one_add_cost);
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
slsr_cand_t arg_cand = base_cand_from_table (arg);
|
|
|
|
|
|
|
|
|
|
if (arg_cand->index != c->index)
|
|
|
|
|
cost += one_add_cost;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return cost;
|
2012-08-08 03:35:22 +02:00
|
|
|
|
}
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
/* For candidate C, each sibling of candidate C, and each dependent of
|
|
|
|
|
candidate C, determine whether the candidate is dependent upon a
|
|
|
|
|
phi that hides its basis. If not, replace the candidate unconditionally.
|
|
|
|
|
Otherwise, determine whether the cost of introducing compensation code
|
|
|
|
|
for the candidate is offset by the gains from strength reduction. If
|
|
|
|
|
so, replace the candidate and introduce the compensation code. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
replace_uncond_cands_and_profitable_phis (slsr_cand_t c)
|
|
|
|
|
{
|
|
|
|
|
if (phi_dependent_cand_p (c))
|
|
|
|
|
{
|
|
|
|
|
if (c->kind == CAND_MULT)
|
|
|
|
|
{
|
|
|
|
|
/* A candidate dependent upon a phi will replace a multiply by
|
|
|
|
|
a constant with an add, and will insert at most one add for
|
|
|
|
|
each phi argument. Add these costs with the potential dead-code
|
|
|
|
|
savings to determine profitability. */
|
|
|
|
|
bool speed = optimize_bb_for_speed_p (gimple_bb (c->cand_stmt));
|
|
|
|
|
int mult_savings = stmt_cost (c->cand_stmt, speed);
|
|
|
|
|
gimple phi = lookup_cand (c->def_phi)->cand_stmt;
|
|
|
|
|
tree phi_result = gimple_phi_result (phi);
|
|
|
|
|
int one_add_cost = add_cost (speed,
|
|
|
|
|
TYPE_MODE (TREE_TYPE (phi_result)));
|
|
|
|
|
int add_costs = one_add_cost + phi_add_costs (phi, c, one_add_cost);
|
|
|
|
|
int cost = add_costs - mult_savings - c->dead_savings;
|
|
|
|
|
|
|
|
|
|
if (dump_file && (dump_flags & TDF_DETAILS))
|
|
|
|
|
{
|
|
|
|
|
fprintf (dump_file, " Conditional candidate %d:\n", c->cand_num);
|
|
|
|
|
fprintf (dump_file, " add_costs = %d\n", add_costs);
|
|
|
|
|
fprintf (dump_file, " mult_savings = %d\n", mult_savings);
|
|
|
|
|
fprintf (dump_file, " dead_savings = %d\n", c->dead_savings);
|
|
|
|
|
fprintf (dump_file, " cost = %d\n", cost);
|
|
|
|
|
if (cost <= COST_NEUTRAL)
|
|
|
|
|
fputs (" Replacing...\n", dump_file);
|
|
|
|
|
else
|
|
|
|
|
fputs (" Not replaced.\n", dump_file);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (cost <= COST_NEUTRAL)
|
|
|
|
|
replace_conditional_candidate (c);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
replace_unconditional_candidate (c);
|
|
|
|
|
|
|
|
|
|
if (c->sibling)
|
|
|
|
|
replace_uncond_cands_and_profitable_phis (lookup_cand (c->sibling));
|
|
|
|
|
|
|
|
|
|
if (c->dependent)
|
|
|
|
|
replace_uncond_cands_and_profitable_phis (lookup_cand (c->dependent));
|
|
|
|
|
}
|
|
|
|
|
|
2012-08-08 03:35:22 +02:00
|
|
|
|
/* Count the number of candidates in the tree rooted at C that have
|
|
|
|
|
not already been replaced under other interpretations. */
|
|
|
|
|
|
2013-05-08 19:05:59 +02:00
|
|
|
|
static int
|
2012-08-08 03:35:22 +02:00
|
|
|
|
count_candidates (slsr_cand_t c)
|
|
|
|
|
{
|
|
|
|
|
unsigned count = cand_already_replaced (c) ? 0 : 1;
|
|
|
|
|
|
|
|
|
|
if (c->sibling)
|
|
|
|
|
count += count_candidates (lookup_cand (c->sibling));
|
|
|
|
|
|
|
|
|
|
if (c->dependent)
|
|
|
|
|
count += count_candidates (lookup_cand (c->dependent));
|
|
|
|
|
|
|
|
|
|
return count;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Increase the count of INCREMENT by one in the increment vector.
|
2013-05-03 20:56:39 +02:00
|
|
|
|
INCREMENT is associated with candidate C. If INCREMENT is to be
|
|
|
|
|
conditionally executed as part of a conditional candidate replacement,
|
|
|
|
|
IS_PHI_ADJUST is true, otherwise false. If an initializer
|
2012-08-08 03:35:22 +02:00
|
|
|
|
T_0 = stride * I is provided by a candidate that dominates all
|
|
|
|
|
candidates with the same increment, also record T_0 for subsequent use. */
|
|
|
|
|
|
|
|
|
|
static void
|
2013-05-03 20:56:39 +02:00
|
|
|
|
record_increment (slsr_cand_t c, double_int increment, bool is_phi_adjust)
|
2012-08-08 03:35:22 +02:00
|
|
|
|
{
|
|
|
|
|
bool found = false;
|
|
|
|
|
unsigned i;
|
|
|
|
|
|
|
|
|
|
/* Treat increments that differ only in sign as identical so as to
|
|
|
|
|
share initializers, unless we are generating pointer arithmetic. */
|
2012-09-07 02:06:35 +02:00
|
|
|
|
if (!address_arithmetic_p && increment.is_negative ())
|
|
|
|
|
increment = -increment;
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
|
|
|
|
for (i = 0; i < incr_vec_len; i++)
|
|
|
|
|
{
|
2012-09-07 02:06:35 +02:00
|
|
|
|
if (incr_vec[i].incr == increment)
|
2012-08-08 03:35:22 +02:00
|
|
|
|
{
|
|
|
|
|
incr_vec[i].count++;
|
|
|
|
|
found = true;
|
|
|
|
|
|
|
|
|
|
/* If we previously recorded an initializer that doesn't
|
|
|
|
|
dominate this candidate, it's not going to be useful to
|
|
|
|
|
us after all. */
|
|
|
|
|
if (incr_vec[i].initializer
|
|
|
|
|
&& !dominated_by_p (CDI_DOMINATORS,
|
|
|
|
|
gimple_bb (c->cand_stmt),
|
|
|
|
|
incr_vec[i].init_bb))
|
|
|
|
|
{
|
|
|
|
|
incr_vec[i].initializer = NULL_TREE;
|
|
|
|
|
incr_vec[i].init_bb = NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2013-05-07 16:11:21 +02:00
|
|
|
|
if (!found && incr_vec_len < MAX_INCR_VEC_LEN - 1)
|
2012-08-08 03:35:22 +02:00
|
|
|
|
{
|
|
|
|
|
/* The first time we see an increment, create the entry for it.
|
|
|
|
|
If this is the root candidate which doesn't have a basis, set
|
|
|
|
|
the count to zero. We're only processing it so it can possibly
|
|
|
|
|
provide an initializer for other candidates. */
|
|
|
|
|
incr_vec[incr_vec_len].incr = increment;
|
2013-05-03 20:56:39 +02:00
|
|
|
|
incr_vec[incr_vec_len].count = c->basis || is_phi_adjust ? 1 : 0;
|
2012-08-08 03:35:22 +02:00
|
|
|
|
incr_vec[incr_vec_len].cost = COST_INFINITE;
|
|
|
|
|
|
|
|
|
|
/* Optimistically record the first occurrence of this increment
|
|
|
|
|
as providing an initializer (if it does); we will revise this
|
|
|
|
|
opinion later if it doesn't dominate all other occurrences.
|
2013-05-03 20:56:39 +02:00
|
|
|
|
Exception: increments of -1, 0, 1 never need initializers;
|
|
|
|
|
and phi adjustments don't ever provide initializers. */
|
2012-08-08 03:35:22 +02:00
|
|
|
|
if (c->kind == CAND_ADD
|
2013-05-03 20:56:39 +02:00
|
|
|
|
&& !is_phi_adjust
|
2012-09-07 02:06:35 +02:00
|
|
|
|
&& c->index == increment
|
|
|
|
|
&& (increment.sgt (double_int_one)
|
2013-04-15 16:56:36 +02:00
|
|
|
|
|| increment.slt (double_int_minus_one))
|
|
|
|
|
&& (gimple_assign_rhs_code (c->cand_stmt) == PLUS_EXPR
|
|
|
|
|
|| gimple_assign_rhs_code (c->cand_stmt) == POINTER_PLUS_EXPR))
|
2012-08-08 03:35:22 +02:00
|
|
|
|
{
|
2013-04-15 16:56:36 +02:00
|
|
|
|
tree t0 = NULL_TREE;
|
2012-08-08 03:35:22 +02:00
|
|
|
|
tree rhs1 = gimple_assign_rhs1 (c->cand_stmt);
|
|
|
|
|
tree rhs2 = gimple_assign_rhs2 (c->cand_stmt);
|
|
|
|
|
if (operand_equal_p (rhs1, c->base_expr, 0))
|
|
|
|
|
t0 = rhs2;
|
2013-04-15 16:56:36 +02:00
|
|
|
|
else if (operand_equal_p (rhs2, c->base_expr, 0))
|
2012-08-08 03:35:22 +02:00
|
|
|
|
t0 = rhs1;
|
2013-04-15 16:56:36 +02:00
|
|
|
|
if (t0
|
|
|
|
|
&& SSA_NAME_DEF_STMT (t0)
|
|
|
|
|
&& gimple_bb (SSA_NAME_DEF_STMT (t0)))
|
2012-08-08 03:35:22 +02:00
|
|
|
|
{
|
|
|
|
|
incr_vec[incr_vec_len].initializer = t0;
|
|
|
|
|
incr_vec[incr_vec_len++].init_bb
|
|
|
|
|
= gimple_bb (SSA_NAME_DEF_STMT (t0));
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
incr_vec[incr_vec_len].initializer = NULL_TREE;
|
|
|
|
|
incr_vec[incr_vec_len++].init_bb = NULL;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
incr_vec[incr_vec_len].initializer = NULL_TREE;
|
|
|
|
|
incr_vec[incr_vec_len++].init_bb = NULL;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
/* Given phi statement PHI that hides a candidate from its BASIS, find
|
|
|
|
|
the increments along each incoming arc (recursively handling additional
|
|
|
|
|
phis that may be present) and record them. These increments are the
|
|
|
|
|
difference in index between the index-adjusting statements and the
|
|
|
|
|
index of the basis. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
record_phi_increments (slsr_cand_t basis, gimple phi)
|
|
|
|
|
{
|
|
|
|
|
unsigned i;
|
|
|
|
|
slsr_cand_t phi_cand = base_cand_from_table (gimple_phi_result (phi));
|
|
|
|
|
|
|
|
|
|
for (i = 0; i < gimple_phi_num_args (phi); i++)
|
|
|
|
|
{
|
|
|
|
|
tree arg = gimple_phi_arg_def (phi, i);
|
|
|
|
|
|
|
|
|
|
if (!operand_equal_p (arg, phi_cand->base_expr, 0))
|
|
|
|
|
{
|
|
|
|
|
gimple arg_def = SSA_NAME_DEF_STMT (arg);
|
|
|
|
|
|
|
|
|
|
if (gimple_code (arg_def) == GIMPLE_PHI)
|
|
|
|
|
record_phi_increments (basis, arg_def);
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
slsr_cand_t arg_cand = base_cand_from_table (arg);
|
|
|
|
|
double_int diff = arg_cand->index - basis->index;
|
|
|
|
|
record_increment (arg_cand, diff, PHI_ADJUST);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2012-08-08 03:35:22 +02:00
|
|
|
|
/* Determine how many times each unique increment occurs in the set
|
|
|
|
|
of candidates rooted at C's parent, recording the data in the
|
|
|
|
|
increment vector. For each unique increment I, if an initializer
|
|
|
|
|
T_0 = stride * I is provided by a candidate that dominates all
|
|
|
|
|
candidates with the same increment, also record T_0 for subsequent
|
|
|
|
|
use. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
record_increments (slsr_cand_t c)
|
|
|
|
|
{
|
|
|
|
|
if (!cand_already_replaced (c))
|
2013-05-03 20:56:39 +02:00
|
|
|
|
{
|
|
|
|
|
if (!phi_dependent_cand_p (c))
|
|
|
|
|
record_increment (c, cand_increment (c), NOT_PHI_ADJUST);
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
/* A candidate with a basis hidden by a phi will have one
|
|
|
|
|
increment for its relationship to the index represented by
|
|
|
|
|
the phi, and potentially additional increments along each
|
|
|
|
|
incoming edge. For the root of the dependency tree (which
|
|
|
|
|
has no basis), process just the initial index in case it has
|
|
|
|
|
an initializer that can be used by subsequent candidates. */
|
|
|
|
|
record_increment (c, c->index, NOT_PHI_ADJUST);
|
|
|
|
|
|
|
|
|
|
if (c->basis)
|
|
|
|
|
record_phi_increments (lookup_cand (c->basis),
|
|
|
|
|
lookup_cand (c->def_phi)->cand_stmt);
|
|
|
|
|
}
|
|
|
|
|
}
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
|
|
|
|
if (c->sibling)
|
|
|
|
|
record_increments (lookup_cand (c->sibling));
|
|
|
|
|
|
|
|
|
|
if (c->dependent)
|
|
|
|
|
record_increments (lookup_cand (c->dependent));
|
|
|
|
|
}
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
/* Add up and return the costs of introducing add statements that
|
|
|
|
|
require the increment INCR on behalf of candidate C and phi
|
|
|
|
|
statement PHI. Accumulate into *SAVINGS the potential savings
|
|
|
|
|
from removing existing statements that feed PHI and have no other
|
|
|
|
|
uses. */
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
phi_incr_cost (slsr_cand_t c, double_int incr, gimple phi, int *savings)
|
|
|
|
|
{
|
|
|
|
|
unsigned i;
|
|
|
|
|
int cost = 0;
|
|
|
|
|
slsr_cand_t basis = lookup_cand (c->basis);
|
|
|
|
|
slsr_cand_t phi_cand = base_cand_from_table (gimple_phi_result (phi));
|
|
|
|
|
|
|
|
|
|
for (i = 0; i < gimple_phi_num_args (phi); i++)
|
|
|
|
|
{
|
|
|
|
|
tree arg = gimple_phi_arg_def (phi, i);
|
|
|
|
|
|
|
|
|
|
if (!operand_equal_p (arg, phi_cand->base_expr, 0))
|
|
|
|
|
{
|
|
|
|
|
gimple arg_def = SSA_NAME_DEF_STMT (arg);
|
|
|
|
|
|
|
|
|
|
if (gimple_code (arg_def) == GIMPLE_PHI)
|
|
|
|
|
{
|
|
|
|
|
int feeding_savings = 0;
|
|
|
|
|
cost += phi_incr_cost (c, incr, arg_def, &feeding_savings);
|
|
|
|
|
if (has_single_use (gimple_phi_result (arg_def)))
|
|
|
|
|
*savings += feeding_savings;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
slsr_cand_t arg_cand = base_cand_from_table (arg);
|
|
|
|
|
double_int diff = arg_cand->index - basis->index;
|
|
|
|
|
|
|
|
|
|
if (incr == diff)
|
|
|
|
|
{
|
|
|
|
|
tree basis_lhs = gimple_assign_lhs (basis->cand_stmt);
|
|
|
|
|
tree lhs = gimple_assign_lhs (arg_cand->cand_stmt);
|
|
|
|
|
cost += add_cost (true, TYPE_MODE (TREE_TYPE (basis_lhs)));
|
|
|
|
|
if (has_single_use (lhs))
|
|
|
|
|
*savings += stmt_cost (arg_cand->cand_stmt, true);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return cost;
|
|
|
|
|
}
|
|
|
|
|
|
2012-08-08 03:35:22 +02:00
|
|
|
|
/* Return the first candidate in the tree rooted at C that has not
|
|
|
|
|
already been replaced, favoring siblings over dependents. */
|
|
|
|
|
|
|
|
|
|
static slsr_cand_t
|
|
|
|
|
unreplaced_cand_in_tree (slsr_cand_t c)
|
|
|
|
|
{
|
|
|
|
|
if (!cand_already_replaced (c))
|
|
|
|
|
return c;
|
|
|
|
|
|
|
|
|
|
if (c->sibling)
|
|
|
|
|
{
|
|
|
|
|
slsr_cand_t sib = unreplaced_cand_in_tree (lookup_cand (c->sibling));
|
|
|
|
|
if (sib)
|
|
|
|
|
return sib;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (c->dependent)
|
|
|
|
|
{
|
|
|
|
|
slsr_cand_t dep = unreplaced_cand_in_tree (lookup_cand (c->dependent));
|
|
|
|
|
if (dep)
|
|
|
|
|
return dep;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Return TRUE if the candidates in the tree rooted at C should be
|
|
|
|
|
optimized for speed, else FALSE. We estimate this based on the block
|
|
|
|
|
containing the most dominant candidate in the tree that has not yet
|
|
|
|
|
been replaced. */
|
|
|
|
|
|
|
|
|
|
static bool
|
|
|
|
|
optimize_cands_for_speed_p (slsr_cand_t c)
|
|
|
|
|
{
|
|
|
|
|
slsr_cand_t c2 = unreplaced_cand_in_tree (c);
|
|
|
|
|
gcc_assert (c2);
|
|
|
|
|
return optimize_bb_for_speed_p (gimple_bb (c2->cand_stmt));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Add COST_IN to the lowest cost of any dependent path starting at
|
|
|
|
|
candidate C or any of its siblings, counting only candidates along
|
|
|
|
|
such paths with increment INCR. Assume that replacing a candidate
|
|
|
|
|
reduces cost by REPL_SAVINGS. Also account for savings from any
|
2013-05-03 20:56:39 +02:00
|
|
|
|
statements that would go dead. If COUNT_PHIS is true, include
|
|
|
|
|
costs of introducing feeding statements for conditional candidates. */
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
|
|
|
|
static int
|
2013-05-03 20:56:39 +02:00
|
|
|
|
lowest_cost_path (int cost_in, int repl_savings, slsr_cand_t c,
|
|
|
|
|
double_int incr, bool count_phis)
|
2012-08-08 03:35:22 +02:00
|
|
|
|
{
|
2013-05-03 20:56:39 +02:00
|
|
|
|
int local_cost, sib_cost, savings = 0;
|
2012-08-08 03:35:22 +02:00
|
|
|
|
double_int cand_incr = cand_abs_increment (c);
|
|
|
|
|
|
|
|
|
|
if (cand_already_replaced (c))
|
|
|
|
|
local_cost = cost_in;
|
2012-09-07 02:06:35 +02:00
|
|
|
|
else if (incr == cand_incr)
|
2012-08-08 03:35:22 +02:00
|
|
|
|
local_cost = cost_in - repl_savings - c->dead_savings;
|
|
|
|
|
else
|
|
|
|
|
local_cost = cost_in - c->dead_savings;
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
if (count_phis
|
|
|
|
|
&& phi_dependent_cand_p (c)
|
|
|
|
|
&& !cand_already_replaced (c))
|
|
|
|
|
{
|
|
|
|
|
gimple phi = lookup_cand (c->def_phi)->cand_stmt;
|
|
|
|
|
local_cost += phi_incr_cost (c, incr, phi, &savings);
|
|
|
|
|
|
|
|
|
|
if (has_single_use (gimple_phi_result (phi)))
|
|
|
|
|
local_cost -= savings;
|
|
|
|
|
}
|
|
|
|
|
|
2012-08-08 03:35:22 +02:00
|
|
|
|
if (c->dependent)
|
|
|
|
|
local_cost = lowest_cost_path (local_cost, repl_savings,
|
2013-05-03 20:56:39 +02:00
|
|
|
|
lookup_cand (c->dependent), incr,
|
|
|
|
|
count_phis);
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
|
|
|
|
if (c->sibling)
|
|
|
|
|
{
|
|
|
|
|
sib_cost = lowest_cost_path (cost_in, repl_savings,
|
2013-05-03 20:56:39 +02:00
|
|
|
|
lookup_cand (c->sibling), incr,
|
|
|
|
|
count_phis);
|
2012-08-08 03:35:22 +02:00
|
|
|
|
local_cost = MIN (local_cost, sib_cost);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return local_cost;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Compute the total savings that would accrue from all replacements
|
|
|
|
|
in the candidate tree rooted at C, counting only candidates with
|
|
|
|
|
increment INCR. Assume that replacing a candidate reduces cost
|
|
|
|
|
by REPL_SAVINGS. Also account for savings from statements that
|
|
|
|
|
would go dead. */
|
|
|
|
|
|
|
|
|
|
static int
|
2013-05-03 20:56:39 +02:00
|
|
|
|
total_savings (int repl_savings, slsr_cand_t c, double_int incr,
|
|
|
|
|
bool count_phis)
|
2012-08-08 03:35:22 +02:00
|
|
|
|
{
|
|
|
|
|
int savings = 0;
|
|
|
|
|
double_int cand_incr = cand_abs_increment (c);
|
|
|
|
|
|
2012-09-07 02:06:35 +02:00
|
|
|
|
if (incr == cand_incr && !cand_already_replaced (c))
|
2012-08-08 03:35:22 +02:00
|
|
|
|
savings += repl_savings + c->dead_savings;
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
if (count_phis
|
|
|
|
|
&& phi_dependent_cand_p (c)
|
|
|
|
|
&& !cand_already_replaced (c))
|
|
|
|
|
{
|
|
|
|
|
int phi_savings = 0;
|
|
|
|
|
gimple phi = lookup_cand (c->def_phi)->cand_stmt;
|
|
|
|
|
savings -= phi_incr_cost (c, incr, phi, &phi_savings);
|
|
|
|
|
|
|
|
|
|
if (has_single_use (gimple_phi_result (phi)))
|
|
|
|
|
savings += phi_savings;
|
|
|
|
|
}
|
|
|
|
|
|
2012-08-08 03:35:22 +02:00
|
|
|
|
if (c->dependent)
|
2013-05-03 20:56:39 +02:00
|
|
|
|
savings += total_savings (repl_savings, lookup_cand (c->dependent), incr,
|
|
|
|
|
count_phis);
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
|
|
|
|
if (c->sibling)
|
2013-05-03 20:56:39 +02:00
|
|
|
|
savings += total_savings (repl_savings, lookup_cand (c->sibling), incr,
|
|
|
|
|
count_phis);
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
|
|
|
|
return savings;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Use target-specific costs to determine and record which increments
|
|
|
|
|
in the current candidate tree are profitable to replace, assuming
|
|
|
|
|
MODE and SPEED. FIRST_DEP is the first dependent of the root of
|
|
|
|
|
the candidate tree.
|
|
|
|
|
|
|
|
|
|
One slight limitation here is that we don't account for the possible
|
|
|
|
|
introduction of casts in some cases. See replace_one_candidate for
|
|
|
|
|
the cases where these are introduced. This should probably be cleaned
|
|
|
|
|
up sometime. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
analyze_increments (slsr_cand_t first_dep, enum machine_mode mode, bool speed)
|
|
|
|
|
{
|
|
|
|
|
unsigned i;
|
|
|
|
|
|
|
|
|
|
for (i = 0; i < incr_vec_len; i++)
|
|
|
|
|
{
|
2012-09-07 02:06:35 +02:00
|
|
|
|
HOST_WIDE_INT incr = incr_vec[i].incr.to_shwi ();
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
|
|
|
|
/* If somehow this increment is bigger than a HWI, we won't
|
|
|
|
|
be optimizing candidates that use it. And if the increment
|
|
|
|
|
has a count of zero, nothing will be done with it. */
|
2012-09-07 02:06:35 +02:00
|
|
|
|
if (!incr_vec[i].incr.fits_shwi () || !incr_vec[i].count)
|
2012-08-08 03:35:22 +02:00
|
|
|
|
incr_vec[i].cost = COST_INFINITE;
|
|
|
|
|
|
|
|
|
|
/* Increments of 0, 1, and -1 are always profitable to replace,
|
|
|
|
|
because they always replace a multiply or add with an add or
|
|
|
|
|
copy, and may cause one or more existing instructions to go
|
|
|
|
|
dead. Exception: -1 can't be assumed to be profitable for
|
|
|
|
|
pointer addition. */
|
|
|
|
|
else if (incr == 0
|
|
|
|
|
|| incr == 1
|
|
|
|
|
|| (incr == -1
|
|
|
|
|
&& (gimple_assign_rhs_code (first_dep->cand_stmt)
|
|
|
|
|
!= POINTER_PLUS_EXPR)))
|
|
|
|
|
incr_vec[i].cost = COST_NEUTRAL;
|
|
|
|
|
|
2012-08-15 15:27:29 +02:00
|
|
|
|
/* FORNOW: If we need to add an initializer, give up if a cast from
|
|
|
|
|
the candidate's type to its stride's type can lose precision.
|
|
|
|
|
This could eventually be handled better by expressly retaining the
|
|
|
|
|
result of a cast to a wider type in the stride. Example:
|
|
|
|
|
|
|
|
|
|
short int _1;
|
|
|
|
|
_2 = (int) _1;
|
|
|
|
|
_3 = _2 * 10;
|
|
|
|
|
_4 = x + _3; ADD: x + (10 * _1) : int
|
|
|
|
|
_5 = _2 * 15;
|
|
|
|
|
_6 = x + _3; ADD: x + (15 * _1) : int
|
|
|
|
|
|
|
|
|
|
Right now replacing _6 would cause insertion of an initializer
|
|
|
|
|
of the form "short int T = _1 * 5;" followed by a cast to
|
|
|
|
|
int, which could overflow incorrectly. Had we recorded _2 or
|
|
|
|
|
(int)_1 as the stride, this wouldn't happen. However, doing
|
|
|
|
|
this breaks other opportunities, so this will require some
|
|
|
|
|
care. */
|
|
|
|
|
else if (!incr_vec[i].initializer
|
|
|
|
|
&& TREE_CODE (first_dep->stride) != INTEGER_CST
|
|
|
|
|
&& !legal_cast_p_1 (first_dep->stride,
|
|
|
|
|
gimple_assign_lhs (first_dep->cand_stmt)))
|
|
|
|
|
|
|
|
|
|
incr_vec[i].cost = COST_INFINITE;
|
|
|
|
|
|
2012-09-26 18:49:32 +02:00
|
|
|
|
/* If we need to add an initializer, make sure we don't introduce
|
|
|
|
|
a multiply by a pointer type, which can happen in certain cast
|
|
|
|
|
scenarios. FIXME: When cleaning up these cast issues, we can
|
|
|
|
|
afford to introduce the multiply provided we cast out to an
|
|
|
|
|
unsigned int of appropriate size. */
|
|
|
|
|
else if (!incr_vec[i].initializer
|
|
|
|
|
&& TREE_CODE (first_dep->stride) != INTEGER_CST
|
|
|
|
|
&& POINTER_TYPE_P (TREE_TYPE (first_dep->stride)))
|
|
|
|
|
|
|
|
|
|
incr_vec[i].cost = COST_INFINITE;
|
|
|
|
|
|
2012-08-08 03:35:22 +02:00
|
|
|
|
/* For any other increment, if this is a multiply candidate, we
|
|
|
|
|
must introduce a temporary T and initialize it with
|
|
|
|
|
T_0 = stride * increment. When optimizing for speed, walk the
|
|
|
|
|
candidate tree to calculate the best cost reduction along any
|
|
|
|
|
path; if it offsets the fixed cost of inserting the initializer,
|
|
|
|
|
replacing the increment is profitable. When optimizing for
|
|
|
|
|
size, instead calculate the total cost reduction from replacing
|
|
|
|
|
all candidates with this increment. */
|
|
|
|
|
else if (first_dep->kind == CAND_MULT)
|
|
|
|
|
{
|
|
|
|
|
int cost = mult_by_coeff_cost (incr, mode, speed);
|
|
|
|
|
int repl_savings = mul_cost (speed, mode) - add_cost (speed, mode);
|
|
|
|
|
if (speed)
|
|
|
|
|
cost = lowest_cost_path (cost, repl_savings, first_dep,
|
2013-05-03 20:56:39 +02:00
|
|
|
|
incr_vec[i].incr, COUNT_PHIS);
|
2012-08-08 03:35:22 +02:00
|
|
|
|
else
|
2013-05-03 20:56:39 +02:00
|
|
|
|
cost -= total_savings (repl_savings, first_dep, incr_vec[i].incr,
|
|
|
|
|
COUNT_PHIS);
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
|
|
|
|
incr_vec[i].cost = cost;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* If this is an add candidate, the initializer may already
|
|
|
|
|
exist, so only calculate the cost of the initializer if it
|
|
|
|
|
doesn't. We are replacing one add with another here, so the
|
|
|
|
|
known replacement savings is zero. We will account for removal
|
|
|
|
|
of dead instructions in lowest_cost_path or total_savings. */
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
int cost = 0;
|
|
|
|
|
if (!incr_vec[i].initializer)
|
|
|
|
|
cost = mult_by_coeff_cost (incr, mode, speed);
|
|
|
|
|
|
|
|
|
|
if (speed)
|
2013-05-03 20:56:39 +02:00
|
|
|
|
cost = lowest_cost_path (cost, 0, first_dep, incr_vec[i].incr,
|
|
|
|
|
DONT_COUNT_PHIS);
|
2012-08-08 03:35:22 +02:00
|
|
|
|
else
|
2013-05-03 20:56:39 +02:00
|
|
|
|
cost -= total_savings (0, first_dep, incr_vec[i].incr,
|
|
|
|
|
DONT_COUNT_PHIS);
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
|
|
|
|
incr_vec[i].cost = cost;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Return the nearest common dominator of BB1 and BB2. If the blocks
|
|
|
|
|
are identical, return the earlier of C1 and C2 in *WHERE. Otherwise,
|
|
|
|
|
if the NCD matches BB1, return C1 in *WHERE; if the NCD matches BB2,
|
|
|
|
|
return C2 in *WHERE; and if the NCD matches neither, return NULL in
|
|
|
|
|
*WHERE. Note: It is possible for one of C1 and C2 to be NULL. */
|
|
|
|
|
|
|
|
|
|
static basic_block
|
|
|
|
|
ncd_for_two_cands (basic_block bb1, basic_block bb2,
|
|
|
|
|
slsr_cand_t c1, slsr_cand_t c2, slsr_cand_t *where)
|
|
|
|
|
{
|
|
|
|
|
basic_block ncd;
|
|
|
|
|
|
|
|
|
|
if (!bb1)
|
|
|
|
|
{
|
|
|
|
|
*where = c2;
|
|
|
|
|
return bb2;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (!bb2)
|
|
|
|
|
{
|
|
|
|
|
*where = c1;
|
|
|
|
|
return bb1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ncd = nearest_common_dominator (CDI_DOMINATORS, bb1, bb2);
|
|
|
|
|
|
|
|
|
|
/* If both candidates are in the same block, the earlier
|
|
|
|
|
candidate wins. */
|
|
|
|
|
if (bb1 == ncd && bb2 == ncd)
|
|
|
|
|
{
|
|
|
|
|
if (!c1 || (c2 && c2->cand_num < c1->cand_num))
|
|
|
|
|
*where = c2;
|
|
|
|
|
else
|
|
|
|
|
*where = c1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Otherwise, if one of them produced a candidate in the
|
|
|
|
|
dominator, that one wins. */
|
|
|
|
|
else if (bb1 == ncd)
|
|
|
|
|
*where = c1;
|
|
|
|
|
|
|
|
|
|
else if (bb2 == ncd)
|
|
|
|
|
*where = c2;
|
|
|
|
|
|
|
|
|
|
/* If neither matches the dominator, neither wins. */
|
|
|
|
|
else
|
|
|
|
|
*where = NULL;
|
|
|
|
|
|
|
|
|
|
return ncd;
|
|
|
|
|
}
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
/* Consider all candidates that feed PHI. Find the nearest common
|
|
|
|
|
dominator of those candidates requiring the given increment INCR.
|
|
|
|
|
Further find and return the nearest common dominator of this result
|
|
|
|
|
with block NCD. If the returned block contains one or more of the
|
|
|
|
|
candidates, return the earliest candidate in the block in *WHERE. */
|
|
|
|
|
|
|
|
|
|
static basic_block
|
|
|
|
|
ncd_with_phi (slsr_cand_t c, double_int incr, gimple phi,
|
|
|
|
|
basic_block ncd, slsr_cand_t *where)
|
|
|
|
|
{
|
|
|
|
|
unsigned i;
|
|
|
|
|
slsr_cand_t basis = lookup_cand (c->basis);
|
|
|
|
|
slsr_cand_t phi_cand = base_cand_from_table (gimple_phi_result (phi));
|
|
|
|
|
|
|
|
|
|
for (i = 0; i < gimple_phi_num_args (phi); i++)
|
|
|
|
|
{
|
|
|
|
|
tree arg = gimple_phi_arg_def (phi, i);
|
|
|
|
|
|
|
|
|
|
if (!operand_equal_p (arg, phi_cand->base_expr, 0))
|
|
|
|
|
{
|
|
|
|
|
gimple arg_def = SSA_NAME_DEF_STMT (arg);
|
|
|
|
|
|
|
|
|
|
if (gimple_code (arg_def) == GIMPLE_PHI)
|
|
|
|
|
ncd = ncd_with_phi (c, incr, arg_def, ncd, where);
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
slsr_cand_t arg_cand = base_cand_from_table (arg);
|
|
|
|
|
double_int diff = arg_cand->index - basis->index;
|
|
|
|
|
|
|
|
|
|
if ((incr == diff) || (!address_arithmetic_p && incr == -diff))
|
|
|
|
|
ncd = ncd_for_two_cands (ncd, gimple_bb (arg_cand->cand_stmt),
|
|
|
|
|
*where, arg_cand, where);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return ncd;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Consider the candidate C together with any candidates that feed
|
|
|
|
|
C's phi dependence (if any). Find and return the nearest common
|
|
|
|
|
dominator of those candidates requiring the given increment INCR.
|
|
|
|
|
If the returned block contains one or more of the candidates,
|
|
|
|
|
return the earliest candidate in the block in *WHERE. */
|
|
|
|
|
|
|
|
|
|
static basic_block
|
|
|
|
|
ncd_of_cand_and_phis (slsr_cand_t c, double_int incr, slsr_cand_t *where)
|
|
|
|
|
{
|
|
|
|
|
basic_block ncd = NULL;
|
|
|
|
|
|
|
|
|
|
if (cand_abs_increment (c) == incr)
|
|
|
|
|
{
|
|
|
|
|
ncd = gimple_bb (c->cand_stmt);
|
|
|
|
|
*where = c;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (phi_dependent_cand_p (c))
|
|
|
|
|
ncd = ncd_with_phi (c, incr, lookup_cand (c->def_phi)->cand_stmt,
|
|
|
|
|
ncd, where);
|
|
|
|
|
|
|
|
|
|
return ncd;
|
|
|
|
|
}
|
|
|
|
|
|
2012-08-08 03:35:22 +02:00
|
|
|
|
/* Consider all candidates in the tree rooted at C for which INCR
|
|
|
|
|
represents the required increment of C relative to its basis.
|
|
|
|
|
Find and return the basic block that most nearly dominates all
|
|
|
|
|
such candidates. If the returned block contains one or more of
|
|
|
|
|
the candidates, return the earliest candidate in the block in
|
|
|
|
|
*WHERE. */
|
|
|
|
|
|
|
|
|
|
static basic_block
|
|
|
|
|
nearest_common_dominator_for_cands (slsr_cand_t c, double_int incr,
|
|
|
|
|
slsr_cand_t *where)
|
|
|
|
|
{
|
|
|
|
|
basic_block sib_ncd = NULL, dep_ncd = NULL, this_ncd = NULL, ncd;
|
|
|
|
|
slsr_cand_t sib_where = NULL, dep_where = NULL, this_where = NULL, new_where;
|
|
|
|
|
|
|
|
|
|
/* First find the NCD of all siblings and dependents. */
|
|
|
|
|
if (c->sibling)
|
|
|
|
|
sib_ncd = nearest_common_dominator_for_cands (lookup_cand (c->sibling),
|
|
|
|
|
incr, &sib_where);
|
|
|
|
|
if (c->dependent)
|
|
|
|
|
dep_ncd = nearest_common_dominator_for_cands (lookup_cand (c->dependent),
|
|
|
|
|
incr, &dep_where);
|
|
|
|
|
if (!sib_ncd && !dep_ncd)
|
|
|
|
|
{
|
|
|
|
|
new_where = NULL;
|
|
|
|
|
ncd = NULL;
|
|
|
|
|
}
|
|
|
|
|
else if (sib_ncd && !dep_ncd)
|
|
|
|
|
{
|
|
|
|
|
new_where = sib_where;
|
|
|
|
|
ncd = sib_ncd;
|
|
|
|
|
}
|
|
|
|
|
else if (dep_ncd && !sib_ncd)
|
|
|
|
|
{
|
|
|
|
|
new_where = dep_where;
|
|
|
|
|
ncd = dep_ncd;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
ncd = ncd_for_two_cands (sib_ncd, dep_ncd, sib_where,
|
|
|
|
|
dep_where, &new_where);
|
|
|
|
|
|
|
|
|
|
/* If the candidate's increment doesn't match the one we're interested
|
2013-05-03 20:56:39 +02:00
|
|
|
|
in (and nor do any increments for feeding defs of a phi-dependence),
|
|
|
|
|
then the result depends only on siblings and dependents. */
|
|
|
|
|
this_ncd = ncd_of_cand_and_phis (c, incr, &this_where);
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
if (!this_ncd || cand_already_replaced (c))
|
2012-08-08 03:35:22 +02:00
|
|
|
|
{
|
|
|
|
|
*where = new_where;
|
|
|
|
|
return ncd;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Otherwise, compare this candidate with the result from all siblings
|
|
|
|
|
and dependents. */
|
|
|
|
|
ncd = ncd_for_two_cands (ncd, this_ncd, new_where, this_where, where);
|
|
|
|
|
|
|
|
|
|
return ncd;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Return TRUE if the increment indexed by INDEX is profitable to replace. */
|
|
|
|
|
|
|
|
|
|
static inline bool
|
|
|
|
|
profitable_increment_p (unsigned index)
|
|
|
|
|
{
|
|
|
|
|
return (incr_vec[index].cost <= COST_NEUTRAL);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* For each profitable increment in the increment vector not equal to
|
|
|
|
|
0 or 1 (or -1, for non-pointer arithmetic), find the nearest common
|
|
|
|
|
dominator of all statements in the candidate chain rooted at C
|
|
|
|
|
that require that increment, and insert an initializer
|
|
|
|
|
T_0 = stride * increment at that location. Record T_0 with the
|
|
|
|
|
increment record. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
insert_initializers (slsr_cand_t c)
|
|
|
|
|
{
|
|
|
|
|
unsigned i;
|
|
|
|
|
|
|
|
|
|
for (i = 0; i < incr_vec_len; i++)
|
|
|
|
|
{
|
|
|
|
|
basic_block bb;
|
|
|
|
|
slsr_cand_t where = NULL;
|
|
|
|
|
gimple init_stmt;
|
|
|
|
|
tree stride_type, new_name, incr_tree;
|
|
|
|
|
double_int incr = incr_vec[i].incr;
|
|
|
|
|
|
|
|
|
|
if (!profitable_increment_p (i)
|
2012-09-07 02:06:35 +02:00
|
|
|
|
|| incr.is_one ()
|
|
|
|
|
|| (incr.is_minus_one ()
|
2012-08-08 03:35:22 +02:00
|
|
|
|
&& gimple_assign_rhs_code (c->cand_stmt) != POINTER_PLUS_EXPR)
|
2012-09-07 02:06:35 +02:00
|
|
|
|
|| incr.is_zero ())
|
2012-08-08 03:35:22 +02:00
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
/* We may have already identified an existing initializer that
|
|
|
|
|
will suffice. */
|
|
|
|
|
if (incr_vec[i].initializer)
|
|
|
|
|
{
|
|
|
|
|
if (dump_file && (dump_flags & TDF_DETAILS))
|
|
|
|
|
{
|
|
|
|
|
fputs ("Using existing initializer: ", dump_file);
|
|
|
|
|
print_gimple_stmt (dump_file,
|
|
|
|
|
SSA_NAME_DEF_STMT (incr_vec[i].initializer),
|
|
|
|
|
0, 0);
|
|
|
|
|
}
|
|
|
|
|
continue;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Find the block that most closely dominates all candidates
|
|
|
|
|
with this increment. If there is at least one candidate in
|
|
|
|
|
that block, the earliest one will be returned in WHERE. */
|
|
|
|
|
bb = nearest_common_dominator_for_cands (c, incr, &where);
|
|
|
|
|
|
|
|
|
|
/* Create a new SSA name to hold the initializer's value. */
|
|
|
|
|
stride_type = TREE_TYPE (c->stride);
|
2013-05-07 14:44:50 +02:00
|
|
|
|
new_name = make_temp_ssa_name (stride_type, NULL, "slsr");
|
2012-08-08 03:35:22 +02:00
|
|
|
|
incr_vec[i].initializer = new_name;
|
|
|
|
|
|
|
|
|
|
/* Create the initializer and insert it in the latest possible
|
|
|
|
|
dominating position. */
|
|
|
|
|
incr_tree = double_int_to_tree (stride_type, incr);
|
|
|
|
|
init_stmt = gimple_build_assign_with_ops (MULT_EXPR, new_name,
|
|
|
|
|
c->stride, incr_tree);
|
|
|
|
|
if (where)
|
|
|
|
|
{
|
|
|
|
|
gimple_stmt_iterator gsi = gsi_for_stmt (where->cand_stmt);
|
|
|
|
|
gsi_insert_before (&gsi, init_stmt, GSI_SAME_STMT);
|
|
|
|
|
gimple_set_location (init_stmt, gimple_location (where->cand_stmt));
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
gimple_stmt_iterator gsi = gsi_last_bb (bb);
|
|
|
|
|
gimple basis_stmt = lookup_cand (c->basis)->cand_stmt;
|
|
|
|
|
|
|
|
|
|
if (!gsi_end_p (gsi) && is_ctrl_stmt (gsi_stmt (gsi)))
|
|
|
|
|
gsi_insert_before (&gsi, init_stmt, GSI_SAME_STMT);
|
|
|
|
|
else
|
|
|
|
|
gsi_insert_after (&gsi, init_stmt, GSI_SAME_STMT);
|
|
|
|
|
|
|
|
|
|
gimple_set_location (init_stmt, gimple_location (basis_stmt));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (dump_file && (dump_flags & TDF_DETAILS))
|
|
|
|
|
{
|
|
|
|
|
fputs ("Inserting initializer: ", dump_file);
|
|
|
|
|
print_gimple_stmt (dump_file, init_stmt, 0, 0);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
/* Return TRUE iff all required increments for candidates feeding PHI
|
|
|
|
|
are profitable to replace on behalf of candidate C. */
|
|
|
|
|
|
|
|
|
|
static bool
|
|
|
|
|
all_phi_incrs_profitable (slsr_cand_t c, gimple phi)
|
|
|
|
|
{
|
|
|
|
|
unsigned i;
|
|
|
|
|
slsr_cand_t basis = lookup_cand (c->basis);
|
|
|
|
|
slsr_cand_t phi_cand = base_cand_from_table (gimple_phi_result (phi));
|
|
|
|
|
|
|
|
|
|
for (i = 0; i < gimple_phi_num_args (phi); i++)
|
|
|
|
|
{
|
|
|
|
|
tree arg = gimple_phi_arg_def (phi, i);
|
|
|
|
|
|
|
|
|
|
if (!operand_equal_p (arg, phi_cand->base_expr, 0))
|
|
|
|
|
{
|
|
|
|
|
gimple arg_def = SSA_NAME_DEF_STMT (arg);
|
|
|
|
|
|
|
|
|
|
if (gimple_code (arg_def) == GIMPLE_PHI)
|
|
|
|
|
{
|
|
|
|
|
if (!all_phi_incrs_profitable (c, arg_def))
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
2013-05-07 16:11:21 +02:00
|
|
|
|
int j;
|
2013-05-03 20:56:39 +02:00
|
|
|
|
slsr_cand_t arg_cand = base_cand_from_table (arg);
|
|
|
|
|
double_int increment = arg_cand->index - basis->index;
|
|
|
|
|
|
|
|
|
|
if (!address_arithmetic_p && increment.is_negative ())
|
|
|
|
|
increment = -increment;
|
|
|
|
|
|
|
|
|
|
j = incr_vec_index (increment);
|
|
|
|
|
|
|
|
|
|
if (dump_file && (dump_flags & TDF_DETAILS))
|
|
|
|
|
{
|
|
|
|
|
fprintf (dump_file, " Conditional candidate %d, phi: ",
|
|
|
|
|
c->cand_num);
|
|
|
|
|
print_gimple_stmt (dump_file, phi, 0, 0);
|
|
|
|
|
fputs (" increment: ", dump_file);
|
|
|
|
|
dump_double_int (dump_file, increment, false);
|
2013-05-07 16:11:21 +02:00
|
|
|
|
if (j < 0)
|
|
|
|
|
fprintf (dump_file,
|
|
|
|
|
"\n Not replaced; incr_vec overflow.\n");
|
|
|
|
|
else {
|
|
|
|
|
fprintf (dump_file, "\n cost: %d\n", incr_vec[j].cost);
|
|
|
|
|
if (profitable_increment_p (j))
|
|
|
|
|
fputs (" Replacing...\n", dump_file);
|
|
|
|
|
else
|
|
|
|
|
fputs (" Not replaced.\n", dump_file);
|
|
|
|
|
}
|
2013-05-03 20:56:39 +02:00
|
|
|
|
}
|
|
|
|
|
|
2013-05-07 16:11:21 +02:00
|
|
|
|
if (j < 0 || !profitable_increment_p (j))
|
2013-05-03 20:56:39 +02:00
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
2012-08-08 03:35:22 +02:00
|
|
|
|
/* Create a NOP_EXPR that copies FROM_EXPR into a new SSA name of
|
|
|
|
|
type TO_TYPE, and insert it in front of the statement represented
|
|
|
|
|
by candidate C. Use *NEW_VAR to create the new SSA name. Return
|
|
|
|
|
the new SSA name. */
|
|
|
|
|
|
|
|
|
|
static tree
|
2013-05-07 14:44:50 +02:00
|
|
|
|
introduce_cast_before_cand (slsr_cand_t c, tree to_type, tree from_expr)
|
2012-08-08 03:35:22 +02:00
|
|
|
|
{
|
|
|
|
|
tree cast_lhs;
|
|
|
|
|
gimple cast_stmt;
|
|
|
|
|
gimple_stmt_iterator gsi = gsi_for_stmt (c->cand_stmt);
|
|
|
|
|
|
2013-05-07 14:44:50 +02:00
|
|
|
|
cast_lhs = make_temp_ssa_name (to_type, NULL, "slsr");
|
2012-08-08 03:35:22 +02:00
|
|
|
|
cast_stmt = gimple_build_assign_with_ops (NOP_EXPR, cast_lhs,
|
|
|
|
|
from_expr, NULL_TREE);
|
|
|
|
|
gimple_set_location (cast_stmt, gimple_location (c->cand_stmt));
|
|
|
|
|
gsi_insert_before (&gsi, cast_stmt, GSI_SAME_STMT);
|
|
|
|
|
|
|
|
|
|
if (dump_file && (dump_flags & TDF_DETAILS))
|
|
|
|
|
{
|
|
|
|
|
fputs (" Inserting: ", dump_file);
|
|
|
|
|
print_gimple_stmt (dump_file, cast_stmt, 0, 0);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return cast_lhs;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Replace the RHS of the statement represented by candidate C with
|
|
|
|
|
NEW_CODE, NEW_RHS1, and NEW_RHS2, provided that to do so doesn't
|
|
|
|
|
leave C unchanged or just interchange its operands. The original
|
|
|
|
|
operation and operands are in OLD_CODE, OLD_RHS1, and OLD_RHS2.
|
|
|
|
|
If the replacement was made and we are doing a details dump,
|
|
|
|
|
return the revised statement, else NULL. */
|
|
|
|
|
|
|
|
|
|
static gimple
|
|
|
|
|
replace_rhs_if_not_dup (enum tree_code new_code, tree new_rhs1, tree new_rhs2,
|
|
|
|
|
enum tree_code old_code, tree old_rhs1, tree old_rhs2,
|
|
|
|
|
slsr_cand_t c)
|
|
|
|
|
{
|
|
|
|
|
if (new_code != old_code
|
|
|
|
|
|| ((!operand_equal_p (new_rhs1, old_rhs1, 0)
|
|
|
|
|
|| !operand_equal_p (new_rhs2, old_rhs2, 0))
|
|
|
|
|
&& (!operand_equal_p (new_rhs1, old_rhs2, 0)
|
|
|
|
|
|| !operand_equal_p (new_rhs2, old_rhs1, 0))))
|
|
|
|
|
{
|
|
|
|
|
gimple_stmt_iterator gsi = gsi_for_stmt (c->cand_stmt);
|
|
|
|
|
gimple_assign_set_rhs_with_ops (&gsi, new_code, new_rhs1, new_rhs2);
|
|
|
|
|
update_stmt (gsi_stmt (gsi));
|
2013-08-03 16:37:26 +02:00
|
|
|
|
c->cand_stmt = gsi_stmt (gsi);
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
|
|
|
|
if (dump_file && (dump_flags & TDF_DETAILS))
|
|
|
|
|
return gsi_stmt (gsi);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
else if (dump_file && (dump_flags & TDF_DETAILS))
|
|
|
|
|
fputs (" (duplicate, not actually replacing)\n", dump_file);
|
|
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Strength-reduce the statement represented by candidate C by replacing
|
|
|
|
|
it with an equivalent addition or subtraction. I is the index into
|
|
|
|
|
the increment vector identifying C's increment. NEW_VAR is used to
|
|
|
|
|
create a new SSA name if a cast needs to be introduced. BASIS_NAME
|
|
|
|
|
is the rhs1 to use in creating the add/subtract. */
|
|
|
|
|
|
|
|
|
|
static void
|
2013-05-07 14:44:50 +02:00
|
|
|
|
replace_one_candidate (slsr_cand_t c, unsigned i, tree basis_name)
|
2012-08-08 03:35:22 +02:00
|
|
|
|
{
|
|
|
|
|
gimple stmt_to_print = NULL;
|
|
|
|
|
tree orig_rhs1, orig_rhs2;
|
|
|
|
|
tree rhs2;
|
|
|
|
|
enum tree_code orig_code, repl_code;
|
|
|
|
|
double_int cand_incr;
|
|
|
|
|
|
|
|
|
|
orig_code = gimple_assign_rhs_code (c->cand_stmt);
|
|
|
|
|
orig_rhs1 = gimple_assign_rhs1 (c->cand_stmt);
|
|
|
|
|
orig_rhs2 = gimple_assign_rhs2 (c->cand_stmt);
|
|
|
|
|
cand_incr = cand_increment (c);
|
|
|
|
|
|
|
|
|
|
if (dump_file && (dump_flags & TDF_DETAILS))
|
|
|
|
|
{
|
|
|
|
|
fputs ("Replacing: ", dump_file);
|
|
|
|
|
print_gimple_stmt (dump_file, c->cand_stmt, 0, 0);
|
|
|
|
|
stmt_to_print = c->cand_stmt;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (address_arithmetic_p)
|
|
|
|
|
repl_code = POINTER_PLUS_EXPR;
|
|
|
|
|
else
|
|
|
|
|
repl_code = PLUS_EXPR;
|
|
|
|
|
|
|
|
|
|
/* If the increment has an initializer T_0, replace the candidate
|
|
|
|
|
statement with an add of the basis name and the initializer. */
|
|
|
|
|
if (incr_vec[i].initializer)
|
|
|
|
|
{
|
|
|
|
|
tree init_type = TREE_TYPE (incr_vec[i].initializer);
|
|
|
|
|
tree orig_type = TREE_TYPE (orig_rhs2);
|
|
|
|
|
|
|
|
|
|
if (types_compatible_p (orig_type, init_type))
|
|
|
|
|
rhs2 = incr_vec[i].initializer;
|
|
|
|
|
else
|
|
|
|
|
rhs2 = introduce_cast_before_cand (c, orig_type,
|
2013-05-07 14:44:50 +02:00
|
|
|
|
incr_vec[i].initializer);
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
2012-09-07 02:06:35 +02:00
|
|
|
|
if (incr_vec[i].incr != cand_incr)
|
2012-08-08 03:35:22 +02:00
|
|
|
|
{
|
|
|
|
|
gcc_assert (repl_code == PLUS_EXPR);
|
|
|
|
|
repl_code = MINUS_EXPR;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
stmt_to_print = replace_rhs_if_not_dup (repl_code, basis_name, rhs2,
|
|
|
|
|
orig_code, orig_rhs1, orig_rhs2,
|
|
|
|
|
c);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Otherwise, the increment is one of -1, 0, and 1. Replace
|
|
|
|
|
with a subtract of the stride from the basis name, a copy
|
|
|
|
|
from the basis name, or an add of the stride to the basis
|
|
|
|
|
name, respectively. It may be necessary to introduce a
|
|
|
|
|
cast (or reuse an existing cast). */
|
2012-09-07 02:06:35 +02:00
|
|
|
|
else if (cand_incr.is_one ())
|
2012-08-08 03:35:22 +02:00
|
|
|
|
{
|
|
|
|
|
tree stride_type = TREE_TYPE (c->stride);
|
|
|
|
|
tree orig_type = TREE_TYPE (orig_rhs2);
|
|
|
|
|
|
|
|
|
|
if (types_compatible_p (orig_type, stride_type))
|
|
|
|
|
rhs2 = c->stride;
|
|
|
|
|
else
|
2013-05-07 14:44:50 +02:00
|
|
|
|
rhs2 = introduce_cast_before_cand (c, orig_type, c->stride);
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
|
|
|
|
stmt_to_print = replace_rhs_if_not_dup (repl_code, basis_name, rhs2,
|
|
|
|
|
orig_code, orig_rhs1, orig_rhs2,
|
|
|
|
|
c);
|
|
|
|
|
}
|
|
|
|
|
|
2012-09-07 02:06:35 +02:00
|
|
|
|
else if (cand_incr.is_minus_one ())
|
2012-08-08 03:35:22 +02:00
|
|
|
|
{
|
|
|
|
|
tree stride_type = TREE_TYPE (c->stride);
|
|
|
|
|
tree orig_type = TREE_TYPE (orig_rhs2);
|
|
|
|
|
gcc_assert (repl_code != POINTER_PLUS_EXPR);
|
|
|
|
|
|
|
|
|
|
if (types_compatible_p (orig_type, stride_type))
|
|
|
|
|
rhs2 = c->stride;
|
|
|
|
|
else
|
2013-05-07 14:44:50 +02:00
|
|
|
|
rhs2 = introduce_cast_before_cand (c, orig_type, c->stride);
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
|
|
|
|
if (orig_code != MINUS_EXPR
|
|
|
|
|
|| !operand_equal_p (basis_name, orig_rhs1, 0)
|
|
|
|
|
|| !operand_equal_p (rhs2, orig_rhs2, 0))
|
|
|
|
|
{
|
|
|
|
|
gimple_stmt_iterator gsi = gsi_for_stmt (c->cand_stmt);
|
|
|
|
|
gimple_assign_set_rhs_with_ops (&gsi, MINUS_EXPR, basis_name, rhs2);
|
|
|
|
|
update_stmt (gsi_stmt (gsi));
|
2013-08-03 16:37:26 +02:00
|
|
|
|
c->cand_stmt = gsi_stmt (gsi);
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
|
|
|
|
if (dump_file && (dump_flags & TDF_DETAILS))
|
|
|
|
|
stmt_to_print = gsi_stmt (gsi);
|
|
|
|
|
}
|
|
|
|
|
else if (dump_file && (dump_flags & TDF_DETAILS))
|
|
|
|
|
fputs (" (duplicate, not actually replacing)\n", dump_file);
|
|
|
|
|
}
|
|
|
|
|
|
2012-09-07 02:06:35 +02:00
|
|
|
|
else if (cand_incr.is_zero ())
|
2012-08-08 03:35:22 +02:00
|
|
|
|
{
|
|
|
|
|
tree lhs = gimple_assign_lhs (c->cand_stmt);
|
|
|
|
|
tree lhs_type = TREE_TYPE (lhs);
|
|
|
|
|
tree basis_type = TREE_TYPE (basis_name);
|
|
|
|
|
|
|
|
|
|
if (types_compatible_p (lhs_type, basis_type))
|
|
|
|
|
{
|
|
|
|
|
gimple copy_stmt = gimple_build_assign (lhs, basis_name);
|
|
|
|
|
gimple_stmt_iterator gsi = gsi_for_stmt (c->cand_stmt);
|
|
|
|
|
gimple_set_location (copy_stmt, gimple_location (c->cand_stmt));
|
|
|
|
|
gsi_replace (&gsi, copy_stmt, false);
|
2013-07-30 03:01:35 +02:00
|
|
|
|
c->cand_stmt = copy_stmt;
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
|
|
|
|
if (dump_file && (dump_flags & TDF_DETAILS))
|
|
|
|
|
stmt_to_print = copy_stmt;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
gimple_stmt_iterator gsi = gsi_for_stmt (c->cand_stmt);
|
|
|
|
|
gimple cast_stmt = gimple_build_assign_with_ops (NOP_EXPR, lhs,
|
|
|
|
|
basis_name,
|
|
|
|
|
NULL_TREE);
|
|
|
|
|
gimple_set_location (cast_stmt, gimple_location (c->cand_stmt));
|
|
|
|
|
gsi_replace (&gsi, cast_stmt, false);
|
2013-07-30 03:01:35 +02:00
|
|
|
|
c->cand_stmt = cast_stmt;
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
|
|
|
|
if (dump_file && (dump_flags & TDF_DETAILS))
|
|
|
|
|
stmt_to_print = cast_stmt;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
gcc_unreachable ();
|
|
|
|
|
|
|
|
|
|
if (dump_file && (dump_flags & TDF_DETAILS) && stmt_to_print)
|
|
|
|
|
{
|
|
|
|
|
fputs ("With: ", dump_file);
|
|
|
|
|
print_gimple_stmt (dump_file, stmt_to_print, 0, 0);
|
|
|
|
|
fputs ("\n", dump_file);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* For each candidate in the tree rooted at C, replace it with
|
|
|
|
|
an increment if such has been shown to be profitable. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
replace_profitable_candidates (slsr_cand_t c)
|
|
|
|
|
{
|
|
|
|
|
if (!cand_already_replaced (c))
|
|
|
|
|
{
|
|
|
|
|
double_int increment = cand_abs_increment (c);
|
|
|
|
|
enum tree_code orig_code = gimple_assign_rhs_code (c->cand_stmt);
|
2013-05-07 16:11:21 +02:00
|
|
|
|
int i;
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
|
|
|
|
i = incr_vec_index (increment);
|
|
|
|
|
|
|
|
|
|
/* Only process profitable increments. Nothing useful can be done
|
|
|
|
|
to a cast or copy. */
|
2013-05-07 16:11:21 +02:00
|
|
|
|
if (i >= 0
|
|
|
|
|
&& profitable_increment_p (i)
|
2012-08-08 03:35:22 +02:00
|
|
|
|
&& orig_code != MODIFY_EXPR
|
|
|
|
|
&& orig_code != NOP_EXPR)
|
|
|
|
|
{
|
2013-05-03 20:56:39 +02:00
|
|
|
|
if (phi_dependent_cand_p (c))
|
|
|
|
|
{
|
|
|
|
|
gimple phi = lookup_cand (c->def_phi)->cand_stmt;
|
|
|
|
|
|
|
|
|
|
if (all_phi_incrs_profitable (c, phi))
|
|
|
|
|
{
|
|
|
|
|
/* Look up the LHS SSA name from C's basis. This will be
|
|
|
|
|
the RHS1 of the adds we will introduce to create new
|
|
|
|
|
phi arguments. */
|
|
|
|
|
slsr_cand_t basis = lookup_cand (c->basis);
|
|
|
|
|
tree basis_name = gimple_assign_lhs (basis->cand_stmt);
|
|
|
|
|
|
|
|
|
|
/* Create a new phi statement that will represent C's true
|
|
|
|
|
basis after the transformation is complete. */
|
|
|
|
|
location_t loc = gimple_location (c->cand_stmt);
|
|
|
|
|
tree name = create_phi_basis (c, phi, basis_name,
|
|
|
|
|
loc, UNKNOWN_STRIDE);
|
|
|
|
|
|
|
|
|
|
/* Replace C with an add of the new basis phi and the
|
|
|
|
|
increment. */
|
2013-05-07 14:44:50 +02:00
|
|
|
|
replace_one_candidate (c, i, name);
|
2013-05-03 20:56:39 +02:00
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
slsr_cand_t basis = lookup_cand (c->basis);
|
|
|
|
|
tree basis_name = gimple_assign_lhs (basis->cand_stmt);
|
2013-05-07 14:44:50 +02:00
|
|
|
|
replace_one_candidate (c, i, basis_name);
|
2013-05-03 20:56:39 +02:00
|
|
|
|
}
|
2012-08-08 03:35:22 +02:00
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (c->sibling)
|
|
|
|
|
replace_profitable_candidates (lookup_cand (c->sibling));
|
|
|
|
|
|
|
|
|
|
if (c->dependent)
|
|
|
|
|
replace_profitable_candidates (lookup_cand (c->dependent));
|
|
|
|
|
}
|
|
|
|
|
|
2012-06-26 18:27:50 +02:00
|
|
|
|
/* Analyze costs of related candidates in the candidate vector,
|
|
|
|
|
and make beneficial replacements. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
analyze_candidates_and_replace (void)
|
|
|
|
|
{
|
|
|
|
|
unsigned i;
|
|
|
|
|
slsr_cand_t c;
|
|
|
|
|
|
|
|
|
|
/* Each candidate that has a null basis and a non-null
|
|
|
|
|
dependent is the root of a tree of related statements.
|
|
|
|
|
Analyze each tree to determine a subset of those
|
|
|
|
|
statements that can be replaced with maximum benefit. */
|
This patch rewrites the old VEC macro-based interface into a new one based on the template class 'vec'.
This patch rewrites the old VEC macro-based interface into a new one
based on the template class 'vec'. The user-visible changes are
described in http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec.
I have tested the patch pretty extensively:
- Regular bootstraps on x86_64, ppc, ia64, sparc and hppa.
- Bootstraps with --enable-checking=release
- Bootstraps with --enable-checking=gc,gcac
- Basic builds on all targets (using contrib/config-list.mk).
We no longer access the vectors via VEC_* macros. The pattern is
"VEC_operation (T, A, V, args)" becomes "V.operation (args)".
The only thing I could not do is create proper ctors and dtors for the
vec class. Since these vectors are stored in unions, we
have to keep them as PODs (C++03 does not allow non-PODs in unions).
This means that creation and destruction must be explicit. There is a
new method vec<type, allocation, layout>::create() and another vec<type,
allocation, layout>::destroy() to allocate the internal vector.
For vectors that must be pointers, there is a family of free functions
that implement the operations that need to tolerate NULL vectors.
These functions all start with the prefix 'vec_safe_'. See the wiki
page for details.
The gengtype change removes the special handling for VEC() that used
to exist in gengtype. Additionally, it allows gengtype to recognize
templates of more than one argument and introduces the concept of an
undefined type (useful for template arguments that may or may not be
types).
When a TYPE_UNDEFINED is reached, gengtype will ignore it if it
happens inside a type marked with GTY((user)). Otherwise, it will
emit an error.
Finally, gengtype rejects root types marked GTY((user)) that are not
first class pointers.
2012-11-16 Diego Novillo <dnovillo@google.com>
VEC API overhaul (http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec)
* vec.c (register_overhead): Convert it into
member function of vec_prefix.
(release_overhead): Likewise.
(calculate_allocation): Likewise.
(vec_heap_free): Remove.
(vec_gc_o_reserve_1): Remove.
(vec_heap_o_reserve_1): Remove.
(vec_stack_o_reserve_1): Remove.
(vec_stack_o_reserve_exact): Remove.
(register_stack_vec): New.
(stack_vec_register_index): New.
(unregister_stack_vec): New.
(vec_assert_fail): Remove.
* vec.h: Conditionally include ggc.h. Document conditional
hackery.
Update top-level documentation.
(ALONE_VEC_CHECK_INFO): Remove.
(VEC_CHECK_INFO): Remove.
(ALONE_VEC_CHECK_DECL): Remove.
(VEC_CHECK_DECL): Remove.
(ALONE_VEC_CHECK_PASS): Remove.
(VEC_CHECK_PASS): Remove.
(VEC_ASSERT): Remove.
(vec_prefix): Add friends va_gc, va_gc_atomic, va_heap and
va_stack.
Mark fields alloc_ and num_ as protected.
(struct vec_t): Remove. Remove all function members.
(struct vl_embed): Declare.
(struct vl_ptr): Declare.
(free): Remove.
(reserve_exact): Remove.
(reserve): Remove.
(safe_splice): Remove.
(safe_push): Remove.
(safe_grow): Remove.
(safe_grow_cleared): Remove.
(safe_insert): Remove.
(DEF_VEC_I): Remove.
(DEF_VEC_ALLOC_I): Remove.
(DEF_VEC_P): Remove.
(DEF_VEC_ALLOC_P): Remove.
(DEF_VEC_O): Remove.
(DEF_VEC_ALLOC_O): Remove.
(DEF_VEC_ALLOC_P_STACK): Remove.
(DEF_VEC_ALLOC_O_STACK): Remove.
(DEF_VEC_ALLOC_I_STACK): Remove.
(DEF_VEC_A): Remove.
(DEF_VEC_ALLOC_A): Remove.
(vec_stack_p_reserve_exact_1): Remove.
(vec_stack_o_reserve): Remove.
(vec_stack_o_reserve_exact): Remove.
(VEC_length): Remove.
(VEC_empty): Remove.
(VEC_address): Remove.
(vec_address): Remove.
(VEC_last): Remove.
(VEC_index): Remove.
(VEC_iterate): Remove.
(VEC_embedded_size): Remove.
(VEC_embedded_init): Remove.
(VEC_free): Remove.
(VEC_copy): Remove.
(VEC_space): Remove.
(VEC_reserve): Remove.
(VEC_reserve_exact): Remove.
(VEC_splice): Remove.
(VEC_safe_splice): Remove.
(VEC_quick_push): Remove.
(VEC_safe_push): Remove.
(VEC_pop): Remove.
(VEC_truncate): Remove.
(VEC_safe_grow): Remove.
(VEC_replace): Remove.
(VEC_quick_insert): Remove.
(VEC_safe_insert): Remove.
(VEC_ordered_remove): Remove.
(VEC_unordered_remove): Remove.
(VEC_block_remove): Remove.
(VEC_lower_bound): Remove.
(VEC_alloc): Remove.
(VEC_qsort): Remove.
(va_heap): Declare.
(va_heap::default_layout): New typedef to vl_ptr.
(va_heap::reserve): New.
(va_heap::release): New.
(va_gc): Declare.
(va_gc::default_layout): New typedef to vl_embed.
(va_gc::reserve): New.
(va_gc::release): New.
(va_gc_atomic): Declare. Inherit from va_gc.
(va_stack): Declare.
(va_stack::default_layout): New typedef to vl_ptr.
(va_stack::alloc): New.
(va_stack::reserve): New.
(va_stack::release): New.
(register_stack_vec): Declare.
(stack_vec_register_index): Declare.
(unregister_stack_vec): Declare.
(vec<T, A = va_heap, L = typename A::default_layout>): Declare
empty vec template.
(vec<T, A, vl_embed>): Partial specialization for embedded
layout.
(vec<T, A, vl_embed>::allocated): New.
(vec<T, A, vl_embed>::length): New.
(vec<T, A, vl_embed>::is_empty): New.
(vec<T, A, vl_embed>::address): New.
(vec<T, A, vl_embed>::operator[]): New.
(vec<T, A, vl_embed>::last New.
(vec<T, A, vl_embed>::space): New.
(vec<T, A, vl_embed>::iterate): New.
(vec<T, A, vl_embed>::iterate): New.
(vec<T, A, vl_embed>::copy): New.
(vec<T, A, vl_embed>::splice): New.
(vec<T, A, vl_embed>::quick_push New.
(vec<T, A, vl_embed>::pop New.
(vec<T, A, vl_embed>::truncate): New.
(vec<T, A, vl_embed>::quick_insert): New.
(vec<T, A, vl_embed>::ordered_remove): New.
(vec<T, A, vl_embed>::unordered_remove): New.
(vec<T, A, vl_embed>::block_remove): New.
(vec<T, A, vl_embed>::qsort): New.
(vec<T, A, vl_embed>::lower_bound): New.
(vec<T, A, vl_embed>::embedded_size): New.
(vec<T, A, vl_embed>::embedded_init): New.
(vec<T, A, vl_embed>::quick_grow): New.
(vec<T, A, vl_embed>::quick_grow_cleared): New.
(vec_safe_space): New.
(vec_safe_length): New.
(vec_safe_address): New.
(vec_safe_is_empty): New.
(vec_safe_reserve): New.
(vec_safe_reserve_exact): New.
(vec_alloc): New.
(vec_free): New.
(vec_safe_grow): New.
(vec_safe_grow_cleared): New.
(vec_safe_iterate): New.
(vec_safe_push): New.
(vec_safe_insert): New.
(vec_safe_truncate): New.
(vec_safe_copy): New.
(vec_safe_splice): New.
(vec<T, A, vl_ptr>): New partial specialization for the space
efficient layout.
(vec<T, A, vl_ptr>::exists): New.
(vec<T, A, vl_ptr>::is_empty): New.
(vec<T, A, vl_ptr>::length): New.
(vec<T, A, vl_ptr>::address): New.
(vec<T, A, vl_ptr>::operator[]): New.
(vec<T, A, vl_ptr>::operator!=): New.
(vec<T, A, vl_ptr>::operator==): New.
(vec<T, A, vl_ptr>::last): New.
(vec<T, A, vl_ptr>::space): New.
(vec<T, A, vl_ptr>::iterate): New.
(vec<T, A, vl_ptr>::copy): New.
(vec<T, A, vl_ptr>::reserve): New.
(vec<T, A, vl_ptr>::reserve_exact): New.
(vec<T, A, vl_ptr>::splice): New.
(vec<T, A, vl_ptr>::safe_splice): New.
(vec<T, A, vl_ptr>::quick_push): New.
(vec<T, A, vl_ptr>::safe_push): New.
(vec<T, A, vl_ptr>::pop): New.
(vec<T, A, vl_ptr>::truncate): New.
(vec<T, A, vl_ptr>::safe_grow): New.
(vec<T, A, vl_ptr>::safe_grow_cleared): New.
(vec<T, A, vl_ptr>::quick_grow): New.
(vec<T, A, vl_ptr>::quick_grow_cleared): New.
(vec<T, A, vl_ptr>::quick_insert): New.
(vec<T, A, vl_ptr>::safe_insert): New.
(vec<T, A, vl_ptr>::ordered_remove): New.
(vec<T, A, vl_ptr>::unordered_remove): New.
(vec<T, A, vl_ptr>::block_remove): New.
(vec<T, A, vl_ptr>::qsort): New.
(vec<T, A, vl_ptr>::lower_bound): New.
(vec_stack_alloc): Define.
(FOR_EACH_VEC_SAFE_ELT): Define.
* vecir.h: Remove. Update all users.
* vecprim.h: Remove. Update all users.
Move uchar to coretypes.h.
* Makefile.in (VEC_H): Add $(GGC_H).
Remove vecir.h and vecprim.h dependencies everywhere.
2012-11-16 Diego Novillo <dnovillo@google.com>
* gengtype-lex.l (VEC): Remove.
Add characters in the set [\!\>\.-].
* gengtype-parse.c (token_names): Remove "VEC".
(require_template_declaration): Remove handling of VEC_TOKEN.
(type): Likewise.
Call create_user_defined_type when parsing GTY((user)).
* gengtype-state.c (type_lineloc): handle TYPE_UNDEFINED.
(write_state_undefined_type): New.
(write_state_type): Call write_state_undefined_type for
TYPE_UNDEFINED.
(read_state_type): Call read_state_undefined_type for
TYPE_UNDEFINED.
* gengtype.c (dbgprint_count_type_at): Handle TYPE_UNDEFINED.
(create_user_defined_type): Make extern.
(type_for_name): Factor out of resolve_typedef.
(create_undefined_type): New
(resolve_typedef): Call it when we cannot find a previous
typedef and the type is not a template.
(find_structure): Accept TYPE_UNDEFINED.
(set_gc_used_type): Add argument ALLOWED_UNDEFINED_TYPES,
default to false.
Emit an error for TYPE_UNDEFINED unless LEVEL is GC_UNUSED or
ALLOWED_UNDEFINED_TYPES is set.
Set ALLOWED_UNDEFINED_TYPES to true for TYPE_USER_STRUCT.
(filter_type_name): Accept templates with more than one
argument.
(output_mangled_typename): Handle TYPE_UNDEFINED
(walk_type): Likewise.
(write_types_process_field): Likewise.
(write_func_for_structure): If CHAIN_NEXT is set, ORIG_S
should not be a user-defined type.
(write_types_local_user_process_field): Handle TYPE_ARRAY,
TYPE_NONE and TYPE_UNDEFINED.
(write_types_local_process_field): Likewise.
(contains_scalar_p): Return 0 for TYPE_USER_STRUCT.
(write_root): Reject user-defined types that are not pointers.
Handle TYPE_NONE, TYPE_UNDEFINED, TYPE_UNION, TYPE_LANG_STRUCT
and TYPE_PARAM_STRUCT.
(output_typename): Handle TYPE_NONE, TYPE_UNDEFINED, and
TYPE_ARRAY.
(dump_typekind): Handle TYPE_UNDEFINED.
* gengtype.h (enum typekind): Add TYPE_UNDEFINED.
(create_user_defined_type): Declare.
(enum gty_token): Remove VEC_TOKEN.
2012-11-16 Diego Novillo <dnovillo@google.com>
Adjust for new vec API (http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec)
* coretypes.h (uchar): Define.
* alias.c: Use new vec API in vec.h.
* asan.c: Likewise.
* attribs.c: Likewise.
* basic-block.h: Likewise.
* bb-reorder.c: Likewise.
* builtins.c: Likewise.
* calls.c: Likewise.
* cfg.c: Likewise.
* cfganal.c: Likewise.
* cfgcleanup.c: Likewise.
* cfgexpand.c: Likewise.
* cfghooks.c: Likewise.
* cfghooks.h: Likewise.
* cfgloop.c: Likewise.
* cfgloop.h: Likewise.
* cfgloopanal.c: Likewise.
* cfgloopmanip.c: Likewise.
* cfgrtl.c: Likewise.
* cgraph.c: Likewise.
* cgraph.h: Likewise.
* cgraphclones.c: Likewise.
* cgraphunit.c: Likewise.
* combine.c: Likewise.
* compare-elim.c: Likewise.
* coverage.c: Likewise.
* cprop.c: Likewise.
* data-streamer.h: Likewise.
* dbxout.c: Likewise.
* dce.c: Likewise.
* df-core.c: Likewise.
* df-problems.c: Likewise.
* df-scan.c: Likewise.
* dominance.c: Likewise.
* domwalk.c: Likewise.
* domwalk.h: Likewise.
* dse.c: Likewise.
* dwarf2cfi.c: Likewise.
* dwarf2out.c: Likewise.
* dwarf2out.h: Likewise.
* emit-rtl.c: Likewise.
* except.c: Likewise.
* except.h: Likewise.
* expr.c: Likewise.
* expr.h: Likewise.
* final.c: Likewise.
* fold-const.c: Likewise.
* function.c: Likewise.
* function.h: Likewise.
* fwprop.c: Likewise.
* gcc.c: Likewise.
* gcse.c: Likewise.
* genattr.c: Likewise.
* genattrtab.c: Likewise.
* genautomata.c: Likewise.
* genextract.c: Likewise.
* genopinit.c: Likewise
* ggc-common.c: Likewise.
* ggc.h: Likewise.
* gimple-low.c: Likewise.
* gimple-ssa-strength-reduction.c: Likewise.
* gimple-streamer-in.c: Likewise.
* gimple.c: Likewise.
* gimple.h: Likewise.
* gimplify.c: Likewise.
* graph.c: Likewise.
* graphds.c: Likewise.
* graphds.h: Likewise.
* graphite-blocking.c: Likewise.
* graphite-clast-to-gimple.c: Likewise.
* graphite-dependences.c: Likewise.
* graphite-interchange.c: Likewise.
* graphite-optimize-isl.c: Likewise.
* graphite-poly.c: Likewise.
* graphite-poly.h: Likewise.
* graphite-scop-detection.c: Likewise.
* graphite-scop-detection.h: Likewise.
* graphite-sese-to-poly.c: Likewise.
* graphite.c: Likewise.
* godump.c: Likewise.
* haifa-sched.c: Likewise.
* hw-doloop.c: Likewise.
* hw-doloop.h: Likewise.
* ifcvt.c: Likewise.
* insn-addr.h: Likewise.
* ipa-cp.c: Likewise.
* ipa-inline-analysis.c: Likewise.
* ipa-inline-transform.c: Likewise.
* ipa-inline.c: Likewise.
* ipa-inline.h: Likewise.
* ipa-prop.c: Likewise.
* ipa-prop.h: Likewise.
* ipa-pure-const.c: Likewise.
* ipa-ref-inline.h: Likewise.
* ipa-ref.c: Likewise.
* ipa-ref.h: Likewise.
* ipa-reference.c: Likewise.
* ipa-split.c: Likewise.
* ipa-utils.c: Likewise.
* ipa-utils.h: Likewise.
* ipa.c: Likewise.
* ira-build.c: Likewise.
* ira-color.c: Likewise.
* ira-emit.c: Likewise.
* ira-int.h: Likewise.
* ira.c: Likewise.
* loop-invariant.c: Likewise.
* loop-unroll.c: Likewise.
* lower-subreg.c: Likewise.
* lra-lives.c: Likewise.
* lra.c: Likewise.
* lto-cgraph.c: Likewise.
* lto-section-out.c: Likewise.
* lto-streamer-in.c: Likewise.
* lto-streamer-out.c: Likewise.
* lto-streamer.h: Likewise.
* lto-symtab.c: Likewise.
* mcf.c: Likewise.
* modulo-sched.c: Likewise.
* omp-low.c: Likewise.
* opts-common.c: Likewise.
* opts-global.c: Likewise.
* opts.c: Likewise.
* opts.h: Likewise.
* passes.c: Likewise.
* predict.c: Likewise.
* print-tree.c: Likewise.
* profile.c: Likewise.
* profile.h: Likewise.
* read-rtl.c: Likewise.
* ree.c: Likewise.
* reg-stack.c: Likewise.
* regrename.c: Likewise.
* regrename.h: Likewise.
* reload.c: Likewise.
* reload.h: Likewise.
* reload1.c: Likewise.
* rtl.h: Likewise.
* sched-deps.c: Likewise.
* sched-int.h: Likewise.
* sdbout.c: Likewise.
* sel-sched-dump.c: Likewise.
* sel-sched-ir.c: Likewise.
* sel-sched-ir.h: Likewise.
* sel-sched.c: Likewise.
* sese.c: Likewise.
* sese.h: Likewise.
* statistics.h: Likewise.
* stmt.c: Likewise.
* stor-layout.c: Likewise.
* store-motion.c: Likewise.
* tlink.c: Likewise.
* toplev.c: Likewise.
* trans-mem.c: Likewise.
* tree-browser.c: Likewise.
* tree-call-cdce.c: Likewise.
* tree-cfg.c: Likewise.
* tree-cfgcleanup.c: Likewise.
* tree-chrec.c: Likewise.
* tree-chrec.h: Likewise.
* tree-complex.c: Likewise.
* tree-data-ref.c: Likewise.
* tree-data-ref.h: Likewise.
* tree-dfa.c: Likewise.
* tree-diagnostic.c: Likewise.
* tree-dump.c: Likewise.
* tree-eh.c: Likewise.
* tree-emutls.c: Likewise.
* tree-flow.h: Likewise.
* tree-if-conv.c: Likewise.
* tree-inline.c: Likewise.
* tree-inline.h: Likewise.
* tree-into-ssa.c: Likewise.
* tree-iterator.c: Likewise.
* tree-loop-distribution.c: Likewise.
* tree-mudflap.c: Likewise.
* tree-optimize.c: Likewise.
* tree-outof-ssa.c: Likewise.
* tree-parloops.c: Likewise.
* tree-phinodes.c: Likewise.
* tree-predcom.c: Likewise.
* tree-pretty-print.c: Likewise.
* tree-scalar-evolution.c: Likewise.
* tree-sra.c: Likewise.
* tree-ssa-address.c: Likewise.
* tree-ssa-alias.c: Likewise.
* tree-ssa-ccp.c: Likewise.
* tree-ssa-coalesce.c: Likewise.
* tree-ssa-dce.c: Likewise.
* tree-ssa-dom.c: Likewise.
* tree-ssa-forwprop.c: Likewise.
* tree-ssa-live.c: Likewise.
* tree-ssa-live.h: Likewise.
* tree-ssa-loop-im.c: Likewise.
* tree-ssa-loop-ivcanon.c: Likewise.
* tree-ssa-loop-ivopts.c: Likewise.
* tree-ssa-loop-manip.c: Likewise.
* tree-ssa-loop-niter.c: Likewise.
* tree-ssa-loop-prefetch.c: Likewise.
* tree-ssa-math-opts.c: Likewise.
* tree-ssa-operands.c: Likewise.
* tree-ssa-phiopt.c: Likewise.
* tree-ssa-phiprop.c: Likewise.
* tree-ssa-pre.c: Likewise.
* tree-ssa-propagate.c: Likewise.
* tree-ssa-reassoc.c: Likewise.
* tree-ssa-sccvn.c: Likewise.
* tree-ssa-sccvn.h: Likewise.
* tree-ssa-strlen.c: Likewise.
* tree-ssa-structalias.c: Likewise.
* tree-ssa-tail-merge.c: Likewise.
* tree-ssa-threadedge.c: Likewise.
* tree-ssa-threadupdate.c: Likewise.
* tree-ssa-uncprop.c: Likewise.
* tree-ssa-uninit.c: Likewise.
* tree-ssa.c: Likewise.
* tree-ssanames.c: Likewise.
* tree-stdarg.c: Likewise.
* tree-streamer-in.c: Likewise.
* tree-streamer-out.c: Likewise.
* tree-streamer.c: Likewise.
* tree-streamer.h: Likewise.
* tree-switch-conversion.c: Likewise.
* tree-vect-data-refs.c: Likewise.
* tree-vect-generic.c: Likewise.
* tree-vect-loop-manip.c: Likewise.
* tree-vect-loop.c: Likewise.
* tree-vect-patterns.c: Likewise.
* tree-vect-slp.c: Likewise.
* tree-vect-stmts.c: Likewise.
* tree-vectorizer.c: Likewise.
* tree-vectorizer.h: Likewise.
* tree-vrp.c: Likewise.
* tree.c: Likewise.
* tree.h: Likewise.
* value-prof.c: Likewise.
* value-prof.h: Likewise.
* var-tracking.c: Likewise.
* varasm.c: Likewise.
* varpool.c: Likewise.
* vmsdbgout.c: Likewise.
* config/bfin/bfin.c: Likewise.
* config/c6x/c6x.c: Likewise.
* config/darwin.c: Likewise.
* config/i386/i386.c: Likewise.
* config/ia64/ia64.c: Likewise.
* config/mep/mep.c: Likewise.
* config/mips/mips.c: Likewise.
* config/pa/pa.c: Likewise.
* config/rs6000/rs6000-c.c: Likewise.
* config/rs6000/rs6000.c: Likewise.
* config/rx/rx.c: Likewise.
* config/spu/spu-c.c: Likewise.
* config/vms/vms.c: Likewise.
* config/vxworks.c: Likewise.
* config/epiphany/resolve-sw-modes.c: Likewise.
From-SVN: r193595
2012-11-18 03:54:30 +01:00
|
|
|
|
FOR_EACH_VEC_ELT (cand_vec, i, c)
|
2012-06-26 18:27:50 +02:00
|
|
|
|
{
|
|
|
|
|
slsr_cand_t first_dep;
|
|
|
|
|
|
|
|
|
|
if (c->basis != 0 || c->dependent == 0)
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
if (dump_file && (dump_flags & TDF_DETAILS))
|
|
|
|
|
fprintf (dump_file, "\nProcessing dependency tree rooted at %d.\n",
|
|
|
|
|
c->cand_num);
|
|
|
|
|
|
|
|
|
|
first_dep = lookup_cand (c->dependent);
|
|
|
|
|
|
2012-08-01 15:02:38 +02:00
|
|
|
|
/* If this is a chain of CAND_REFs, unconditionally replace
|
|
|
|
|
each of them with a strength-reduced data reference. */
|
|
|
|
|
if (c->kind == CAND_REF)
|
|
|
|
|
replace_refs (c);
|
|
|
|
|
|
2013-05-03 20:56:39 +02:00
|
|
|
|
/* If the common stride of all related candidates is a known
|
|
|
|
|
constant, each candidate without a phi-dependence can be
|
|
|
|
|
profitably replaced. Each replaces a multiply by a single
|
|
|
|
|
add, with the possibility that a feeding add also goes dead.
|
|
|
|
|
A candidate with a phi-dependence is replaced only if the
|
|
|
|
|
compensation code it requires is offset by the strength
|
|
|
|
|
reduction savings. */
|
|
|
|
|
else if (TREE_CODE (c->stride) == INTEGER_CST)
|
|
|
|
|
replace_uncond_cands_and_profitable_phis (first_dep);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
2012-08-08 03:35:22 +02:00
|
|
|
|
/* When the stride is an SSA name, it may still be profitable
|
|
|
|
|
to replace some or all of the dependent candidates, depending
|
|
|
|
|
on whether the introduced increments can be reused, or are
|
|
|
|
|
less expensive to calculate than the replaced statements. */
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
enum machine_mode mode;
|
|
|
|
|
bool speed;
|
|
|
|
|
|
|
|
|
|
/* Determine whether we'll be generating pointer arithmetic
|
|
|
|
|
when replacing candidates. */
|
|
|
|
|
address_arithmetic_p = (c->kind == CAND_ADD
|
2012-08-10 14:16:04 +02:00
|
|
|
|
&& POINTER_TYPE_P (c->cand_type));
|
2012-08-08 03:35:22 +02:00
|
|
|
|
|
|
|
|
|
/* If all candidates have already been replaced under other
|
|
|
|
|
interpretations, nothing remains to be done. */
|
2013-05-29 18:00:54 +02:00
|
|
|
|
if (!count_candidates (c))
|
2012-08-08 03:35:22 +02:00
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
/* Construct an array of increments for this candidate chain. */
|
2013-05-29 18:00:54 +02:00
|
|
|
|
incr_vec = XNEWVEC (incr_info, MAX_INCR_VEC_LEN);
|
2012-08-08 03:35:22 +02:00
|
|
|
|
incr_vec_len = 0;
|
|
|
|
|
record_increments (c);
|
|
|
|
|
|
|
|
|
|
/* Determine which increments are profitable to replace. */
|
|
|
|
|
mode = TYPE_MODE (TREE_TYPE (gimple_assign_lhs (c->cand_stmt)));
|
|
|
|
|
speed = optimize_cands_for_speed_p (c);
|
|
|
|
|
analyze_increments (first_dep, mode, speed);
|
|
|
|
|
|
|
|
|
|
/* Insert initializers of the form T_0 = stride * increment
|
|
|
|
|
for use in profitable replacements. */
|
|
|
|
|
insert_initializers (first_dep);
|
|
|
|
|
dump_incr_vec ();
|
|
|
|
|
|
|
|
|
|
/* Perform the replacements. */
|
|
|
|
|
replace_profitable_candidates (first_dep);
|
|
|
|
|
free (incr_vec);
|
|
|
|
|
}
|
2012-06-26 18:27:50 +02:00
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static unsigned
|
|
|
|
|
execute_strength_reduction (void)
|
|
|
|
|
{
|
|
|
|
|
struct dom_walk_data walk_data;
|
|
|
|
|
|
|
|
|
|
/* Create the obstack where candidates will reside. */
|
|
|
|
|
gcc_obstack_init (&cand_obstack);
|
|
|
|
|
|
|
|
|
|
/* Allocate the candidate vector. */
|
This patch rewrites the old VEC macro-based interface into a new one based on the template class 'vec'.
This patch rewrites the old VEC macro-based interface into a new one
based on the template class 'vec'. The user-visible changes are
described in http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec.
I have tested the patch pretty extensively:
- Regular bootstraps on x86_64, ppc, ia64, sparc and hppa.
- Bootstraps with --enable-checking=release
- Bootstraps with --enable-checking=gc,gcac
- Basic builds on all targets (using contrib/config-list.mk).
We no longer access the vectors via VEC_* macros. The pattern is
"VEC_operation (T, A, V, args)" becomes "V.operation (args)".
The only thing I could not do is create proper ctors and dtors for the
vec class. Since these vectors are stored in unions, we
have to keep them as PODs (C++03 does not allow non-PODs in unions).
This means that creation and destruction must be explicit. There is a
new method vec<type, allocation, layout>::create() and another vec<type,
allocation, layout>::destroy() to allocate the internal vector.
For vectors that must be pointers, there is a family of free functions
that implement the operations that need to tolerate NULL vectors.
These functions all start with the prefix 'vec_safe_'. See the wiki
page for details.
The gengtype change removes the special handling for VEC() that used
to exist in gengtype. Additionally, it allows gengtype to recognize
templates of more than one argument and introduces the concept of an
undefined type (useful for template arguments that may or may not be
types).
When a TYPE_UNDEFINED is reached, gengtype will ignore it if it
happens inside a type marked with GTY((user)). Otherwise, it will
emit an error.
Finally, gengtype rejects root types marked GTY((user)) that are not
first class pointers.
2012-11-16 Diego Novillo <dnovillo@google.com>
VEC API overhaul (http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec)
* vec.c (register_overhead): Convert it into
member function of vec_prefix.
(release_overhead): Likewise.
(calculate_allocation): Likewise.
(vec_heap_free): Remove.
(vec_gc_o_reserve_1): Remove.
(vec_heap_o_reserve_1): Remove.
(vec_stack_o_reserve_1): Remove.
(vec_stack_o_reserve_exact): Remove.
(register_stack_vec): New.
(stack_vec_register_index): New.
(unregister_stack_vec): New.
(vec_assert_fail): Remove.
* vec.h: Conditionally include ggc.h. Document conditional
hackery.
Update top-level documentation.
(ALONE_VEC_CHECK_INFO): Remove.
(VEC_CHECK_INFO): Remove.
(ALONE_VEC_CHECK_DECL): Remove.
(VEC_CHECK_DECL): Remove.
(ALONE_VEC_CHECK_PASS): Remove.
(VEC_CHECK_PASS): Remove.
(VEC_ASSERT): Remove.
(vec_prefix): Add friends va_gc, va_gc_atomic, va_heap and
va_stack.
Mark fields alloc_ and num_ as protected.
(struct vec_t): Remove. Remove all function members.
(struct vl_embed): Declare.
(struct vl_ptr): Declare.
(free): Remove.
(reserve_exact): Remove.
(reserve): Remove.
(safe_splice): Remove.
(safe_push): Remove.
(safe_grow): Remove.
(safe_grow_cleared): Remove.
(safe_insert): Remove.
(DEF_VEC_I): Remove.
(DEF_VEC_ALLOC_I): Remove.
(DEF_VEC_P): Remove.
(DEF_VEC_ALLOC_P): Remove.
(DEF_VEC_O): Remove.
(DEF_VEC_ALLOC_O): Remove.
(DEF_VEC_ALLOC_P_STACK): Remove.
(DEF_VEC_ALLOC_O_STACK): Remove.
(DEF_VEC_ALLOC_I_STACK): Remove.
(DEF_VEC_A): Remove.
(DEF_VEC_ALLOC_A): Remove.
(vec_stack_p_reserve_exact_1): Remove.
(vec_stack_o_reserve): Remove.
(vec_stack_o_reserve_exact): Remove.
(VEC_length): Remove.
(VEC_empty): Remove.
(VEC_address): Remove.
(vec_address): Remove.
(VEC_last): Remove.
(VEC_index): Remove.
(VEC_iterate): Remove.
(VEC_embedded_size): Remove.
(VEC_embedded_init): Remove.
(VEC_free): Remove.
(VEC_copy): Remove.
(VEC_space): Remove.
(VEC_reserve): Remove.
(VEC_reserve_exact): Remove.
(VEC_splice): Remove.
(VEC_safe_splice): Remove.
(VEC_quick_push): Remove.
(VEC_safe_push): Remove.
(VEC_pop): Remove.
(VEC_truncate): Remove.
(VEC_safe_grow): Remove.
(VEC_replace): Remove.
(VEC_quick_insert): Remove.
(VEC_safe_insert): Remove.
(VEC_ordered_remove): Remove.
(VEC_unordered_remove): Remove.
(VEC_block_remove): Remove.
(VEC_lower_bound): Remove.
(VEC_alloc): Remove.
(VEC_qsort): Remove.
(va_heap): Declare.
(va_heap::default_layout): New typedef to vl_ptr.
(va_heap::reserve): New.
(va_heap::release): New.
(va_gc): Declare.
(va_gc::default_layout): New typedef to vl_embed.
(va_gc::reserve): New.
(va_gc::release): New.
(va_gc_atomic): Declare. Inherit from va_gc.
(va_stack): Declare.
(va_stack::default_layout): New typedef to vl_ptr.
(va_stack::alloc): New.
(va_stack::reserve): New.
(va_stack::release): New.
(register_stack_vec): Declare.
(stack_vec_register_index): Declare.
(unregister_stack_vec): Declare.
(vec<T, A = va_heap, L = typename A::default_layout>): Declare
empty vec template.
(vec<T, A, vl_embed>): Partial specialization for embedded
layout.
(vec<T, A, vl_embed>::allocated): New.
(vec<T, A, vl_embed>::length): New.
(vec<T, A, vl_embed>::is_empty): New.
(vec<T, A, vl_embed>::address): New.
(vec<T, A, vl_embed>::operator[]): New.
(vec<T, A, vl_embed>::last New.
(vec<T, A, vl_embed>::space): New.
(vec<T, A, vl_embed>::iterate): New.
(vec<T, A, vl_embed>::iterate): New.
(vec<T, A, vl_embed>::copy): New.
(vec<T, A, vl_embed>::splice): New.
(vec<T, A, vl_embed>::quick_push New.
(vec<T, A, vl_embed>::pop New.
(vec<T, A, vl_embed>::truncate): New.
(vec<T, A, vl_embed>::quick_insert): New.
(vec<T, A, vl_embed>::ordered_remove): New.
(vec<T, A, vl_embed>::unordered_remove): New.
(vec<T, A, vl_embed>::block_remove): New.
(vec<T, A, vl_embed>::qsort): New.
(vec<T, A, vl_embed>::lower_bound): New.
(vec<T, A, vl_embed>::embedded_size): New.
(vec<T, A, vl_embed>::embedded_init): New.
(vec<T, A, vl_embed>::quick_grow): New.
(vec<T, A, vl_embed>::quick_grow_cleared): New.
(vec_safe_space): New.
(vec_safe_length): New.
(vec_safe_address): New.
(vec_safe_is_empty): New.
(vec_safe_reserve): New.
(vec_safe_reserve_exact): New.
(vec_alloc): New.
(vec_free): New.
(vec_safe_grow): New.
(vec_safe_grow_cleared): New.
(vec_safe_iterate): New.
(vec_safe_push): New.
(vec_safe_insert): New.
(vec_safe_truncate): New.
(vec_safe_copy): New.
(vec_safe_splice): New.
(vec<T, A, vl_ptr>): New partial specialization for the space
efficient layout.
(vec<T, A, vl_ptr>::exists): New.
(vec<T, A, vl_ptr>::is_empty): New.
(vec<T, A, vl_ptr>::length): New.
(vec<T, A, vl_ptr>::address): New.
(vec<T, A, vl_ptr>::operator[]): New.
(vec<T, A, vl_ptr>::operator!=): New.
(vec<T, A, vl_ptr>::operator==): New.
(vec<T, A, vl_ptr>::last): New.
(vec<T, A, vl_ptr>::space): New.
(vec<T, A, vl_ptr>::iterate): New.
(vec<T, A, vl_ptr>::copy): New.
(vec<T, A, vl_ptr>::reserve): New.
(vec<T, A, vl_ptr>::reserve_exact): New.
(vec<T, A, vl_ptr>::splice): New.
(vec<T, A, vl_ptr>::safe_splice): New.
(vec<T, A, vl_ptr>::quick_push): New.
(vec<T, A, vl_ptr>::safe_push): New.
(vec<T, A, vl_ptr>::pop): New.
(vec<T, A, vl_ptr>::truncate): New.
(vec<T, A, vl_ptr>::safe_grow): New.
(vec<T, A, vl_ptr>::safe_grow_cleared): New.
(vec<T, A, vl_ptr>::quick_grow): New.
(vec<T, A, vl_ptr>::quick_grow_cleared): New.
(vec<T, A, vl_ptr>::quick_insert): New.
(vec<T, A, vl_ptr>::safe_insert): New.
(vec<T, A, vl_ptr>::ordered_remove): New.
(vec<T, A, vl_ptr>::unordered_remove): New.
(vec<T, A, vl_ptr>::block_remove): New.
(vec<T, A, vl_ptr>::qsort): New.
(vec<T, A, vl_ptr>::lower_bound): New.
(vec_stack_alloc): Define.
(FOR_EACH_VEC_SAFE_ELT): Define.
* vecir.h: Remove. Update all users.
* vecprim.h: Remove. Update all users.
Move uchar to coretypes.h.
* Makefile.in (VEC_H): Add $(GGC_H).
Remove vecir.h and vecprim.h dependencies everywhere.
2012-11-16 Diego Novillo <dnovillo@google.com>
* gengtype-lex.l (VEC): Remove.
Add characters in the set [\!\>\.-].
* gengtype-parse.c (token_names): Remove "VEC".
(require_template_declaration): Remove handling of VEC_TOKEN.
(type): Likewise.
Call create_user_defined_type when parsing GTY((user)).
* gengtype-state.c (type_lineloc): handle TYPE_UNDEFINED.
(write_state_undefined_type): New.
(write_state_type): Call write_state_undefined_type for
TYPE_UNDEFINED.
(read_state_type): Call read_state_undefined_type for
TYPE_UNDEFINED.
* gengtype.c (dbgprint_count_type_at): Handle TYPE_UNDEFINED.
(create_user_defined_type): Make extern.
(type_for_name): Factor out of resolve_typedef.
(create_undefined_type): New
(resolve_typedef): Call it when we cannot find a previous
typedef and the type is not a template.
(find_structure): Accept TYPE_UNDEFINED.
(set_gc_used_type): Add argument ALLOWED_UNDEFINED_TYPES,
default to false.
Emit an error for TYPE_UNDEFINED unless LEVEL is GC_UNUSED or
ALLOWED_UNDEFINED_TYPES is set.
Set ALLOWED_UNDEFINED_TYPES to true for TYPE_USER_STRUCT.
(filter_type_name): Accept templates with more than one
argument.
(output_mangled_typename): Handle TYPE_UNDEFINED
(walk_type): Likewise.
(write_types_process_field): Likewise.
(write_func_for_structure): If CHAIN_NEXT is set, ORIG_S
should not be a user-defined type.
(write_types_local_user_process_field): Handle TYPE_ARRAY,
TYPE_NONE and TYPE_UNDEFINED.
(write_types_local_process_field): Likewise.
(contains_scalar_p): Return 0 for TYPE_USER_STRUCT.
(write_root): Reject user-defined types that are not pointers.
Handle TYPE_NONE, TYPE_UNDEFINED, TYPE_UNION, TYPE_LANG_STRUCT
and TYPE_PARAM_STRUCT.
(output_typename): Handle TYPE_NONE, TYPE_UNDEFINED, and
TYPE_ARRAY.
(dump_typekind): Handle TYPE_UNDEFINED.
* gengtype.h (enum typekind): Add TYPE_UNDEFINED.
(create_user_defined_type): Declare.
(enum gty_token): Remove VEC_TOKEN.
2012-11-16 Diego Novillo <dnovillo@google.com>
Adjust for new vec API (http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec)
* coretypes.h (uchar): Define.
* alias.c: Use new vec API in vec.h.
* asan.c: Likewise.
* attribs.c: Likewise.
* basic-block.h: Likewise.
* bb-reorder.c: Likewise.
* builtins.c: Likewise.
* calls.c: Likewise.
* cfg.c: Likewise.
* cfganal.c: Likewise.
* cfgcleanup.c: Likewise.
* cfgexpand.c: Likewise.
* cfghooks.c: Likewise.
* cfghooks.h: Likewise.
* cfgloop.c: Likewise.
* cfgloop.h: Likewise.
* cfgloopanal.c: Likewise.
* cfgloopmanip.c: Likewise.
* cfgrtl.c: Likewise.
* cgraph.c: Likewise.
* cgraph.h: Likewise.
* cgraphclones.c: Likewise.
* cgraphunit.c: Likewise.
* combine.c: Likewise.
* compare-elim.c: Likewise.
* coverage.c: Likewise.
* cprop.c: Likewise.
* data-streamer.h: Likewise.
* dbxout.c: Likewise.
* dce.c: Likewise.
* df-core.c: Likewise.
* df-problems.c: Likewise.
* df-scan.c: Likewise.
* dominance.c: Likewise.
* domwalk.c: Likewise.
* domwalk.h: Likewise.
* dse.c: Likewise.
* dwarf2cfi.c: Likewise.
* dwarf2out.c: Likewise.
* dwarf2out.h: Likewise.
* emit-rtl.c: Likewise.
* except.c: Likewise.
* except.h: Likewise.
* expr.c: Likewise.
* expr.h: Likewise.
* final.c: Likewise.
* fold-const.c: Likewise.
* function.c: Likewise.
* function.h: Likewise.
* fwprop.c: Likewise.
* gcc.c: Likewise.
* gcse.c: Likewise.
* genattr.c: Likewise.
* genattrtab.c: Likewise.
* genautomata.c: Likewise.
* genextract.c: Likewise.
* genopinit.c: Likewise
* ggc-common.c: Likewise.
* ggc.h: Likewise.
* gimple-low.c: Likewise.
* gimple-ssa-strength-reduction.c: Likewise.
* gimple-streamer-in.c: Likewise.
* gimple.c: Likewise.
* gimple.h: Likewise.
* gimplify.c: Likewise.
* graph.c: Likewise.
* graphds.c: Likewise.
* graphds.h: Likewise.
* graphite-blocking.c: Likewise.
* graphite-clast-to-gimple.c: Likewise.
* graphite-dependences.c: Likewise.
* graphite-interchange.c: Likewise.
* graphite-optimize-isl.c: Likewise.
* graphite-poly.c: Likewise.
* graphite-poly.h: Likewise.
* graphite-scop-detection.c: Likewise.
* graphite-scop-detection.h: Likewise.
* graphite-sese-to-poly.c: Likewise.
* graphite.c: Likewise.
* godump.c: Likewise.
* haifa-sched.c: Likewise.
* hw-doloop.c: Likewise.
* hw-doloop.h: Likewise.
* ifcvt.c: Likewise.
* insn-addr.h: Likewise.
* ipa-cp.c: Likewise.
* ipa-inline-analysis.c: Likewise.
* ipa-inline-transform.c: Likewise.
* ipa-inline.c: Likewise.
* ipa-inline.h: Likewise.
* ipa-prop.c: Likewise.
* ipa-prop.h: Likewise.
* ipa-pure-const.c: Likewise.
* ipa-ref-inline.h: Likewise.
* ipa-ref.c: Likewise.
* ipa-ref.h: Likewise.
* ipa-reference.c: Likewise.
* ipa-split.c: Likewise.
* ipa-utils.c: Likewise.
* ipa-utils.h: Likewise.
* ipa.c: Likewise.
* ira-build.c: Likewise.
* ira-color.c: Likewise.
* ira-emit.c: Likewise.
* ira-int.h: Likewise.
* ira.c: Likewise.
* loop-invariant.c: Likewise.
* loop-unroll.c: Likewise.
* lower-subreg.c: Likewise.
* lra-lives.c: Likewise.
* lra.c: Likewise.
* lto-cgraph.c: Likewise.
* lto-section-out.c: Likewise.
* lto-streamer-in.c: Likewise.
* lto-streamer-out.c: Likewise.
* lto-streamer.h: Likewise.
* lto-symtab.c: Likewise.
* mcf.c: Likewise.
* modulo-sched.c: Likewise.
* omp-low.c: Likewise.
* opts-common.c: Likewise.
* opts-global.c: Likewise.
* opts.c: Likewise.
* opts.h: Likewise.
* passes.c: Likewise.
* predict.c: Likewise.
* print-tree.c: Likewise.
* profile.c: Likewise.
* profile.h: Likewise.
* read-rtl.c: Likewise.
* ree.c: Likewise.
* reg-stack.c: Likewise.
* regrename.c: Likewise.
* regrename.h: Likewise.
* reload.c: Likewise.
* reload.h: Likewise.
* reload1.c: Likewise.
* rtl.h: Likewise.
* sched-deps.c: Likewise.
* sched-int.h: Likewise.
* sdbout.c: Likewise.
* sel-sched-dump.c: Likewise.
* sel-sched-ir.c: Likewise.
* sel-sched-ir.h: Likewise.
* sel-sched.c: Likewise.
* sese.c: Likewise.
* sese.h: Likewise.
* statistics.h: Likewise.
* stmt.c: Likewise.
* stor-layout.c: Likewise.
* store-motion.c: Likewise.
* tlink.c: Likewise.
* toplev.c: Likewise.
* trans-mem.c: Likewise.
* tree-browser.c: Likewise.
* tree-call-cdce.c: Likewise.
* tree-cfg.c: Likewise.
* tree-cfgcleanup.c: Likewise.
* tree-chrec.c: Likewise.
* tree-chrec.h: Likewise.
* tree-complex.c: Likewise.
* tree-data-ref.c: Likewise.
* tree-data-ref.h: Likewise.
* tree-dfa.c: Likewise.
* tree-diagnostic.c: Likewise.
* tree-dump.c: Likewise.
* tree-eh.c: Likewise.
* tree-emutls.c: Likewise.
* tree-flow.h: Likewise.
* tree-if-conv.c: Likewise.
* tree-inline.c: Likewise.
* tree-inline.h: Likewise.
* tree-into-ssa.c: Likewise.
* tree-iterator.c: Likewise.
* tree-loop-distribution.c: Likewise.
* tree-mudflap.c: Likewise.
* tree-optimize.c: Likewise.
* tree-outof-ssa.c: Likewise.
* tree-parloops.c: Likewise.
* tree-phinodes.c: Likewise.
* tree-predcom.c: Likewise.
* tree-pretty-print.c: Likewise.
* tree-scalar-evolution.c: Likewise.
* tree-sra.c: Likewise.
* tree-ssa-address.c: Likewise.
* tree-ssa-alias.c: Likewise.
* tree-ssa-ccp.c: Likewise.
* tree-ssa-coalesce.c: Likewise.
* tree-ssa-dce.c: Likewise.
* tree-ssa-dom.c: Likewise.
* tree-ssa-forwprop.c: Likewise.
* tree-ssa-live.c: Likewise.
* tree-ssa-live.h: Likewise.
* tree-ssa-loop-im.c: Likewise.
* tree-ssa-loop-ivcanon.c: Likewise.
* tree-ssa-loop-ivopts.c: Likewise.
* tree-ssa-loop-manip.c: Likewise.
* tree-ssa-loop-niter.c: Likewise.
* tree-ssa-loop-prefetch.c: Likewise.
* tree-ssa-math-opts.c: Likewise.
* tree-ssa-operands.c: Likewise.
* tree-ssa-phiopt.c: Likewise.
* tree-ssa-phiprop.c: Likewise.
* tree-ssa-pre.c: Likewise.
* tree-ssa-propagate.c: Likewise.
* tree-ssa-reassoc.c: Likewise.
* tree-ssa-sccvn.c: Likewise.
* tree-ssa-sccvn.h: Likewise.
* tree-ssa-strlen.c: Likewise.
* tree-ssa-structalias.c: Likewise.
* tree-ssa-tail-merge.c: Likewise.
* tree-ssa-threadedge.c: Likewise.
* tree-ssa-threadupdate.c: Likewise.
* tree-ssa-uncprop.c: Likewise.
* tree-ssa-uninit.c: Likewise.
* tree-ssa.c: Likewise.
* tree-ssanames.c: Likewise.
* tree-stdarg.c: Likewise.
* tree-streamer-in.c: Likewise.
* tree-streamer-out.c: Likewise.
* tree-streamer.c: Likewise.
* tree-streamer.h: Likewise.
* tree-switch-conversion.c: Likewise.
* tree-vect-data-refs.c: Likewise.
* tree-vect-generic.c: Likewise.
* tree-vect-loop-manip.c: Likewise.
* tree-vect-loop.c: Likewise.
* tree-vect-patterns.c: Likewise.
* tree-vect-slp.c: Likewise.
* tree-vect-stmts.c: Likewise.
* tree-vectorizer.c: Likewise.
* tree-vectorizer.h: Likewise.
* tree-vrp.c: Likewise.
* tree.c: Likewise.
* tree.h: Likewise.
* value-prof.c: Likewise.
* value-prof.h: Likewise.
* var-tracking.c: Likewise.
* varasm.c: Likewise.
* varpool.c: Likewise.
* vmsdbgout.c: Likewise.
* config/bfin/bfin.c: Likewise.
* config/c6x/c6x.c: Likewise.
* config/darwin.c: Likewise.
* config/i386/i386.c: Likewise.
* config/ia64/ia64.c: Likewise.
* config/mep/mep.c: Likewise.
* config/mips/mips.c: Likewise.
* config/pa/pa.c: Likewise.
* config/rs6000/rs6000-c.c: Likewise.
* config/rs6000/rs6000.c: Likewise.
* config/rx/rx.c: Likewise.
* config/spu/spu-c.c: Likewise.
* config/vms/vms.c: Likewise.
* config/vxworks.c: Likewise.
* config/epiphany/resolve-sw-modes.c: Likewise.
From-SVN: r193595
2012-11-18 03:54:30 +01:00
|
|
|
|
cand_vec.create (128);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
|
|
|
|
/* Allocate the mapping from statements to candidate indices. */
|
|
|
|
|
stmt_cand_map = pointer_map_create ();
|
|
|
|
|
|
|
|
|
|
/* Create the obstack where candidate chains will reside. */
|
|
|
|
|
gcc_obstack_init (&chain_obstack);
|
|
|
|
|
|
2012-08-01 16:00:35 +02:00
|
|
|
|
/* Allocate the mapping from base expressions to candidate chains. */
|
2013-04-26 02:28:35 +02:00
|
|
|
|
base_cand_map.create (500);
|
2012-06-26 18:27:50 +02:00
|
|
|
|
|
|
|
|
|
/* Initialize the loop optimizer. We need to detect flow across
|
|
|
|
|
back edges, and this gives us dominator information as well. */
|
|
|
|
|
loop_optimizer_init (AVOID_CFG_MODIFICATIONS);
|
|
|
|
|
|
|
|
|
|
/* Set up callbacks for the generic dominator tree walker. */
|
|
|
|
|
walk_data.dom_direction = CDI_DOMINATORS;
|
|
|
|
|
walk_data.initialize_block_local_data = NULL;
|
|
|
|
|
walk_data.before_dom_children = find_candidates_in_block;
|
|
|
|
|
walk_data.after_dom_children = NULL;
|
|
|
|
|
walk_data.global_data = NULL;
|
|
|
|
|
walk_data.block_local_data_size = 0;
|
|
|
|
|
init_walk_dominator_tree (&walk_data);
|
|
|
|
|
|
|
|
|
|
/* Walk the CFG in predominator order looking for strength reduction
|
|
|
|
|
candidates. */
|
|
|
|
|
walk_dominator_tree (&walk_data, ENTRY_BLOCK_PTR);
|
|
|
|
|
|
|
|
|
|
if (dump_file && (dump_flags & TDF_DETAILS))
|
|
|
|
|
{
|
|
|
|
|
dump_cand_vec ();
|
|
|
|
|
dump_cand_chains ();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Analyze costs and make appropriate replacements. */
|
|
|
|
|
analyze_candidates_and_replace ();
|
|
|
|
|
|
|
|
|
|
/* Free resources. */
|
|
|
|
|
fini_walk_dominator_tree (&walk_data);
|
|
|
|
|
loop_optimizer_finalize ();
|
2013-04-26 02:28:35 +02:00
|
|
|
|
base_cand_map.dispose ();
|
2012-06-26 18:27:50 +02:00
|
|
|
|
obstack_free (&chain_obstack, NULL);
|
|
|
|
|
pointer_map_destroy (stmt_cand_map);
|
This patch rewrites the old VEC macro-based interface into a new one based on the template class 'vec'.
This patch rewrites the old VEC macro-based interface into a new one
based on the template class 'vec'. The user-visible changes are
described in http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec.
I have tested the patch pretty extensively:
- Regular bootstraps on x86_64, ppc, ia64, sparc and hppa.
- Bootstraps with --enable-checking=release
- Bootstraps with --enable-checking=gc,gcac
- Basic builds on all targets (using contrib/config-list.mk).
We no longer access the vectors via VEC_* macros. The pattern is
"VEC_operation (T, A, V, args)" becomes "V.operation (args)".
The only thing I could not do is create proper ctors and dtors for the
vec class. Since these vectors are stored in unions, we
have to keep them as PODs (C++03 does not allow non-PODs in unions).
This means that creation and destruction must be explicit. There is a
new method vec<type, allocation, layout>::create() and another vec<type,
allocation, layout>::destroy() to allocate the internal vector.
For vectors that must be pointers, there is a family of free functions
that implement the operations that need to tolerate NULL vectors.
These functions all start with the prefix 'vec_safe_'. See the wiki
page for details.
The gengtype change removes the special handling for VEC() that used
to exist in gengtype. Additionally, it allows gengtype to recognize
templates of more than one argument and introduces the concept of an
undefined type (useful for template arguments that may or may not be
types).
When a TYPE_UNDEFINED is reached, gengtype will ignore it if it
happens inside a type marked with GTY((user)). Otherwise, it will
emit an error.
Finally, gengtype rejects root types marked GTY((user)) that are not
first class pointers.
2012-11-16 Diego Novillo <dnovillo@google.com>
VEC API overhaul (http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec)
* vec.c (register_overhead): Convert it into
member function of vec_prefix.
(release_overhead): Likewise.
(calculate_allocation): Likewise.
(vec_heap_free): Remove.
(vec_gc_o_reserve_1): Remove.
(vec_heap_o_reserve_1): Remove.
(vec_stack_o_reserve_1): Remove.
(vec_stack_o_reserve_exact): Remove.
(register_stack_vec): New.
(stack_vec_register_index): New.
(unregister_stack_vec): New.
(vec_assert_fail): Remove.
* vec.h: Conditionally include ggc.h. Document conditional
hackery.
Update top-level documentation.
(ALONE_VEC_CHECK_INFO): Remove.
(VEC_CHECK_INFO): Remove.
(ALONE_VEC_CHECK_DECL): Remove.
(VEC_CHECK_DECL): Remove.
(ALONE_VEC_CHECK_PASS): Remove.
(VEC_CHECK_PASS): Remove.
(VEC_ASSERT): Remove.
(vec_prefix): Add friends va_gc, va_gc_atomic, va_heap and
va_stack.
Mark fields alloc_ and num_ as protected.
(struct vec_t): Remove. Remove all function members.
(struct vl_embed): Declare.
(struct vl_ptr): Declare.
(free): Remove.
(reserve_exact): Remove.
(reserve): Remove.
(safe_splice): Remove.
(safe_push): Remove.
(safe_grow): Remove.
(safe_grow_cleared): Remove.
(safe_insert): Remove.
(DEF_VEC_I): Remove.
(DEF_VEC_ALLOC_I): Remove.
(DEF_VEC_P): Remove.
(DEF_VEC_ALLOC_P): Remove.
(DEF_VEC_O): Remove.
(DEF_VEC_ALLOC_O): Remove.
(DEF_VEC_ALLOC_P_STACK): Remove.
(DEF_VEC_ALLOC_O_STACK): Remove.
(DEF_VEC_ALLOC_I_STACK): Remove.
(DEF_VEC_A): Remove.
(DEF_VEC_ALLOC_A): Remove.
(vec_stack_p_reserve_exact_1): Remove.
(vec_stack_o_reserve): Remove.
(vec_stack_o_reserve_exact): Remove.
(VEC_length): Remove.
(VEC_empty): Remove.
(VEC_address): Remove.
(vec_address): Remove.
(VEC_last): Remove.
(VEC_index): Remove.
(VEC_iterate): Remove.
(VEC_embedded_size): Remove.
(VEC_embedded_init): Remove.
(VEC_free): Remove.
(VEC_copy): Remove.
(VEC_space): Remove.
(VEC_reserve): Remove.
(VEC_reserve_exact): Remove.
(VEC_splice): Remove.
(VEC_safe_splice): Remove.
(VEC_quick_push): Remove.
(VEC_safe_push): Remove.
(VEC_pop): Remove.
(VEC_truncate): Remove.
(VEC_safe_grow): Remove.
(VEC_replace): Remove.
(VEC_quick_insert): Remove.
(VEC_safe_insert): Remove.
(VEC_ordered_remove): Remove.
(VEC_unordered_remove): Remove.
(VEC_block_remove): Remove.
(VEC_lower_bound): Remove.
(VEC_alloc): Remove.
(VEC_qsort): Remove.
(va_heap): Declare.
(va_heap::default_layout): New typedef to vl_ptr.
(va_heap::reserve): New.
(va_heap::release): New.
(va_gc): Declare.
(va_gc::default_layout): New typedef to vl_embed.
(va_gc::reserve): New.
(va_gc::release): New.
(va_gc_atomic): Declare. Inherit from va_gc.
(va_stack): Declare.
(va_stack::default_layout): New typedef to vl_ptr.
(va_stack::alloc): New.
(va_stack::reserve): New.
(va_stack::release): New.
(register_stack_vec): Declare.
(stack_vec_register_index): Declare.
(unregister_stack_vec): Declare.
(vec<T, A = va_heap, L = typename A::default_layout>): Declare
empty vec template.
(vec<T, A, vl_embed>): Partial specialization for embedded
layout.
(vec<T, A, vl_embed>::allocated): New.
(vec<T, A, vl_embed>::length): New.
(vec<T, A, vl_embed>::is_empty): New.
(vec<T, A, vl_embed>::address): New.
(vec<T, A, vl_embed>::operator[]): New.
(vec<T, A, vl_embed>::last New.
(vec<T, A, vl_embed>::space): New.
(vec<T, A, vl_embed>::iterate): New.
(vec<T, A, vl_embed>::iterate): New.
(vec<T, A, vl_embed>::copy): New.
(vec<T, A, vl_embed>::splice): New.
(vec<T, A, vl_embed>::quick_push New.
(vec<T, A, vl_embed>::pop New.
(vec<T, A, vl_embed>::truncate): New.
(vec<T, A, vl_embed>::quick_insert): New.
(vec<T, A, vl_embed>::ordered_remove): New.
(vec<T, A, vl_embed>::unordered_remove): New.
(vec<T, A, vl_embed>::block_remove): New.
(vec<T, A, vl_embed>::qsort): New.
(vec<T, A, vl_embed>::lower_bound): New.
(vec<T, A, vl_embed>::embedded_size): New.
(vec<T, A, vl_embed>::embedded_init): New.
(vec<T, A, vl_embed>::quick_grow): New.
(vec<T, A, vl_embed>::quick_grow_cleared): New.
(vec_safe_space): New.
(vec_safe_length): New.
(vec_safe_address): New.
(vec_safe_is_empty): New.
(vec_safe_reserve): New.
(vec_safe_reserve_exact): New.
(vec_alloc): New.
(vec_free): New.
(vec_safe_grow): New.
(vec_safe_grow_cleared): New.
(vec_safe_iterate): New.
(vec_safe_push): New.
(vec_safe_insert): New.
(vec_safe_truncate): New.
(vec_safe_copy): New.
(vec_safe_splice): New.
(vec<T, A, vl_ptr>): New partial specialization for the space
efficient layout.
(vec<T, A, vl_ptr>::exists): New.
(vec<T, A, vl_ptr>::is_empty): New.
(vec<T, A, vl_ptr>::length): New.
(vec<T, A, vl_ptr>::address): New.
(vec<T, A, vl_ptr>::operator[]): New.
(vec<T, A, vl_ptr>::operator!=): New.
(vec<T, A, vl_ptr>::operator==): New.
(vec<T, A, vl_ptr>::last): New.
(vec<T, A, vl_ptr>::space): New.
(vec<T, A, vl_ptr>::iterate): New.
(vec<T, A, vl_ptr>::copy): New.
(vec<T, A, vl_ptr>::reserve): New.
(vec<T, A, vl_ptr>::reserve_exact): New.
(vec<T, A, vl_ptr>::splice): New.
(vec<T, A, vl_ptr>::safe_splice): New.
(vec<T, A, vl_ptr>::quick_push): New.
(vec<T, A, vl_ptr>::safe_push): New.
(vec<T, A, vl_ptr>::pop): New.
(vec<T, A, vl_ptr>::truncate): New.
(vec<T, A, vl_ptr>::safe_grow): New.
(vec<T, A, vl_ptr>::safe_grow_cleared): New.
(vec<T, A, vl_ptr>::quick_grow): New.
(vec<T, A, vl_ptr>::quick_grow_cleared): New.
(vec<T, A, vl_ptr>::quick_insert): New.
(vec<T, A, vl_ptr>::safe_insert): New.
(vec<T, A, vl_ptr>::ordered_remove): New.
(vec<T, A, vl_ptr>::unordered_remove): New.
(vec<T, A, vl_ptr>::block_remove): New.
(vec<T, A, vl_ptr>::qsort): New.
(vec<T, A, vl_ptr>::lower_bound): New.
(vec_stack_alloc): Define.
(FOR_EACH_VEC_SAFE_ELT): Define.
* vecir.h: Remove. Update all users.
* vecprim.h: Remove. Update all users.
Move uchar to coretypes.h.
* Makefile.in (VEC_H): Add $(GGC_H).
Remove vecir.h and vecprim.h dependencies everywhere.
2012-11-16 Diego Novillo <dnovillo@google.com>
* gengtype-lex.l (VEC): Remove.
Add characters in the set [\!\>\.-].
* gengtype-parse.c (token_names): Remove "VEC".
(require_template_declaration): Remove handling of VEC_TOKEN.
(type): Likewise.
Call create_user_defined_type when parsing GTY((user)).
* gengtype-state.c (type_lineloc): handle TYPE_UNDEFINED.
(write_state_undefined_type): New.
(write_state_type): Call write_state_undefined_type for
TYPE_UNDEFINED.
(read_state_type): Call read_state_undefined_type for
TYPE_UNDEFINED.
* gengtype.c (dbgprint_count_type_at): Handle TYPE_UNDEFINED.
(create_user_defined_type): Make extern.
(type_for_name): Factor out of resolve_typedef.
(create_undefined_type): New
(resolve_typedef): Call it when we cannot find a previous
typedef and the type is not a template.
(find_structure): Accept TYPE_UNDEFINED.
(set_gc_used_type): Add argument ALLOWED_UNDEFINED_TYPES,
default to false.
Emit an error for TYPE_UNDEFINED unless LEVEL is GC_UNUSED or
ALLOWED_UNDEFINED_TYPES is set.
Set ALLOWED_UNDEFINED_TYPES to true for TYPE_USER_STRUCT.
(filter_type_name): Accept templates with more than one
argument.
(output_mangled_typename): Handle TYPE_UNDEFINED
(walk_type): Likewise.
(write_types_process_field): Likewise.
(write_func_for_structure): If CHAIN_NEXT is set, ORIG_S
should not be a user-defined type.
(write_types_local_user_process_field): Handle TYPE_ARRAY,
TYPE_NONE and TYPE_UNDEFINED.
(write_types_local_process_field): Likewise.
(contains_scalar_p): Return 0 for TYPE_USER_STRUCT.
(write_root): Reject user-defined types that are not pointers.
Handle TYPE_NONE, TYPE_UNDEFINED, TYPE_UNION, TYPE_LANG_STRUCT
and TYPE_PARAM_STRUCT.
(output_typename): Handle TYPE_NONE, TYPE_UNDEFINED, and
TYPE_ARRAY.
(dump_typekind): Handle TYPE_UNDEFINED.
* gengtype.h (enum typekind): Add TYPE_UNDEFINED.
(create_user_defined_type): Declare.
(enum gty_token): Remove VEC_TOKEN.
2012-11-16 Diego Novillo <dnovillo@google.com>
Adjust for new vec API (http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec)
* coretypes.h (uchar): Define.
* alias.c: Use new vec API in vec.h.
* asan.c: Likewise.
* attribs.c: Likewise.
* basic-block.h: Likewise.
* bb-reorder.c: Likewise.
* builtins.c: Likewise.
* calls.c: Likewise.
* cfg.c: Likewise.
* cfganal.c: Likewise.
* cfgcleanup.c: Likewise.
* cfgexpand.c: Likewise.
* cfghooks.c: Likewise.
* cfghooks.h: Likewise.
* cfgloop.c: Likewise.
* cfgloop.h: Likewise.
* cfgloopanal.c: Likewise.
* cfgloopmanip.c: Likewise.
* cfgrtl.c: Likewise.
* cgraph.c: Likewise.
* cgraph.h: Likewise.
* cgraphclones.c: Likewise.
* cgraphunit.c: Likewise.
* combine.c: Likewise.
* compare-elim.c: Likewise.
* coverage.c: Likewise.
* cprop.c: Likewise.
* data-streamer.h: Likewise.
* dbxout.c: Likewise.
* dce.c: Likewise.
* df-core.c: Likewise.
* df-problems.c: Likewise.
* df-scan.c: Likewise.
* dominance.c: Likewise.
* domwalk.c: Likewise.
* domwalk.h: Likewise.
* dse.c: Likewise.
* dwarf2cfi.c: Likewise.
* dwarf2out.c: Likewise.
* dwarf2out.h: Likewise.
* emit-rtl.c: Likewise.
* except.c: Likewise.
* except.h: Likewise.
* expr.c: Likewise.
* expr.h: Likewise.
* final.c: Likewise.
* fold-const.c: Likewise.
* function.c: Likewise.
* function.h: Likewise.
* fwprop.c: Likewise.
* gcc.c: Likewise.
* gcse.c: Likewise.
* genattr.c: Likewise.
* genattrtab.c: Likewise.
* genautomata.c: Likewise.
* genextract.c: Likewise.
* genopinit.c: Likewise
* ggc-common.c: Likewise.
* ggc.h: Likewise.
* gimple-low.c: Likewise.
* gimple-ssa-strength-reduction.c: Likewise.
* gimple-streamer-in.c: Likewise.
* gimple.c: Likewise.
* gimple.h: Likewise.
* gimplify.c: Likewise.
* graph.c: Likewise.
* graphds.c: Likewise.
* graphds.h: Likewise.
* graphite-blocking.c: Likewise.
* graphite-clast-to-gimple.c: Likewise.
* graphite-dependences.c: Likewise.
* graphite-interchange.c: Likewise.
* graphite-optimize-isl.c: Likewise.
* graphite-poly.c: Likewise.
* graphite-poly.h: Likewise.
* graphite-scop-detection.c: Likewise.
* graphite-scop-detection.h: Likewise.
* graphite-sese-to-poly.c: Likewise.
* graphite.c: Likewise.
* godump.c: Likewise.
* haifa-sched.c: Likewise.
* hw-doloop.c: Likewise.
* hw-doloop.h: Likewise.
* ifcvt.c: Likewise.
* insn-addr.h: Likewise.
* ipa-cp.c: Likewise.
* ipa-inline-analysis.c: Likewise.
* ipa-inline-transform.c: Likewise.
* ipa-inline.c: Likewise.
* ipa-inline.h: Likewise.
* ipa-prop.c: Likewise.
* ipa-prop.h: Likewise.
* ipa-pure-const.c: Likewise.
* ipa-ref-inline.h: Likewise.
* ipa-ref.c: Likewise.
* ipa-ref.h: Likewise.
* ipa-reference.c: Likewise.
* ipa-split.c: Likewise.
* ipa-utils.c: Likewise.
* ipa-utils.h: Likewise.
* ipa.c: Likewise.
* ira-build.c: Likewise.
* ira-color.c: Likewise.
* ira-emit.c: Likewise.
* ira-int.h: Likewise.
* ira.c: Likewise.
* loop-invariant.c: Likewise.
* loop-unroll.c: Likewise.
* lower-subreg.c: Likewise.
* lra-lives.c: Likewise.
* lra.c: Likewise.
* lto-cgraph.c: Likewise.
* lto-section-out.c: Likewise.
* lto-streamer-in.c: Likewise.
* lto-streamer-out.c: Likewise.
* lto-streamer.h: Likewise.
* lto-symtab.c: Likewise.
* mcf.c: Likewise.
* modulo-sched.c: Likewise.
* omp-low.c: Likewise.
* opts-common.c: Likewise.
* opts-global.c: Likewise.
* opts.c: Likewise.
* opts.h: Likewise.
* passes.c: Likewise.
* predict.c: Likewise.
* print-tree.c: Likewise.
* profile.c: Likewise.
* profile.h: Likewise.
* read-rtl.c: Likewise.
* ree.c: Likewise.
* reg-stack.c: Likewise.
* regrename.c: Likewise.
* regrename.h: Likewise.
* reload.c: Likewise.
* reload.h: Likewise.
* reload1.c: Likewise.
* rtl.h: Likewise.
* sched-deps.c: Likewise.
* sched-int.h: Likewise.
* sdbout.c: Likewise.
* sel-sched-dump.c: Likewise.
* sel-sched-ir.c: Likewise.
* sel-sched-ir.h: Likewise.
* sel-sched.c: Likewise.
* sese.c: Likewise.
* sese.h: Likewise.
* statistics.h: Likewise.
* stmt.c: Likewise.
* stor-layout.c: Likewise.
* store-motion.c: Likewise.
* tlink.c: Likewise.
* toplev.c: Likewise.
* trans-mem.c: Likewise.
* tree-browser.c: Likewise.
* tree-call-cdce.c: Likewise.
* tree-cfg.c: Likewise.
* tree-cfgcleanup.c: Likewise.
* tree-chrec.c: Likewise.
* tree-chrec.h: Likewise.
* tree-complex.c: Likewise.
* tree-data-ref.c: Likewise.
* tree-data-ref.h: Likewise.
* tree-dfa.c: Likewise.
* tree-diagnostic.c: Likewise.
* tree-dump.c: Likewise.
* tree-eh.c: Likewise.
* tree-emutls.c: Likewise.
* tree-flow.h: Likewise.
* tree-if-conv.c: Likewise.
* tree-inline.c: Likewise.
* tree-inline.h: Likewise.
* tree-into-ssa.c: Likewise.
* tree-iterator.c: Likewise.
* tree-loop-distribution.c: Likewise.
* tree-mudflap.c: Likewise.
* tree-optimize.c: Likewise.
* tree-outof-ssa.c: Likewise.
* tree-parloops.c: Likewise.
* tree-phinodes.c: Likewise.
* tree-predcom.c: Likewise.
* tree-pretty-print.c: Likewise.
* tree-scalar-evolution.c: Likewise.
* tree-sra.c: Likewise.
* tree-ssa-address.c: Likewise.
* tree-ssa-alias.c: Likewise.
* tree-ssa-ccp.c: Likewise.
* tree-ssa-coalesce.c: Likewise.
* tree-ssa-dce.c: Likewise.
* tree-ssa-dom.c: Likewise.
* tree-ssa-forwprop.c: Likewise.
* tree-ssa-live.c: Likewise.
* tree-ssa-live.h: Likewise.
* tree-ssa-loop-im.c: Likewise.
* tree-ssa-loop-ivcanon.c: Likewise.
* tree-ssa-loop-ivopts.c: Likewise.
* tree-ssa-loop-manip.c: Likewise.
* tree-ssa-loop-niter.c: Likewise.
* tree-ssa-loop-prefetch.c: Likewise.
* tree-ssa-math-opts.c: Likewise.
* tree-ssa-operands.c: Likewise.
* tree-ssa-phiopt.c: Likewise.
* tree-ssa-phiprop.c: Likewise.
* tree-ssa-pre.c: Likewise.
* tree-ssa-propagate.c: Likewise.
* tree-ssa-reassoc.c: Likewise.
* tree-ssa-sccvn.c: Likewise.
* tree-ssa-sccvn.h: Likewise.
* tree-ssa-strlen.c: Likewise.
* tree-ssa-structalias.c: Likewise.
* tree-ssa-tail-merge.c: Likewise.
* tree-ssa-threadedge.c: Likewise.
* tree-ssa-threadupdate.c: Likewise.
* tree-ssa-uncprop.c: Likewise.
* tree-ssa-uninit.c: Likewise.
* tree-ssa.c: Likewise.
* tree-ssanames.c: Likewise.
* tree-stdarg.c: Likewise.
* tree-streamer-in.c: Likewise.
* tree-streamer-out.c: Likewise.
* tree-streamer.c: Likewise.
* tree-streamer.h: Likewise.
* tree-switch-conversion.c: Likewise.
* tree-vect-data-refs.c: Likewise.
* tree-vect-generic.c: Likewise.
* tree-vect-loop-manip.c: Likewise.
* tree-vect-loop.c: Likewise.
* tree-vect-patterns.c: Likewise.
* tree-vect-slp.c: Likewise.
* tree-vect-stmts.c: Likewise.
* tree-vectorizer.c: Likewise.
* tree-vectorizer.h: Likewise.
* tree-vrp.c: Likewise.
* tree.c: Likewise.
* tree.h: Likewise.
* value-prof.c: Likewise.
* value-prof.h: Likewise.
* var-tracking.c: Likewise.
* varasm.c: Likewise.
* varpool.c: Likewise.
* vmsdbgout.c: Likewise.
* config/bfin/bfin.c: Likewise.
* config/c6x/c6x.c: Likewise.
* config/darwin.c: Likewise.
* config/i386/i386.c: Likewise.
* config/ia64/ia64.c: Likewise.
* config/mep/mep.c: Likewise.
* config/mips/mips.c: Likewise.
* config/pa/pa.c: Likewise.
* config/rs6000/rs6000-c.c: Likewise.
* config/rs6000/rs6000.c: Likewise.
* config/rx/rx.c: Likewise.
* config/spu/spu-c.c: Likewise.
* config/vms/vms.c: Likewise.
* config/vxworks.c: Likewise.
* config/epiphany/resolve-sw-modes.c: Likewise.
From-SVN: r193595
2012-11-18 03:54:30 +01:00
|
|
|
|
cand_vec.release ();
|
2012-06-26 18:27:50 +02:00
|
|
|
|
obstack_free (&cand_obstack, NULL);
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static bool
|
|
|
|
|
gate_strength_reduction (void)
|
|
|
|
|
{
|
2012-07-18 17:15:36 +02:00
|
|
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return flag_tree_slsr;
|
2012-06-26 18:27:50 +02:00
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|
|
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}
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|
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struct gimple_opt_pass pass_strength_reduction =
|
|
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|
|
{
|
|
|
|
|
{
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|
|
GIMPLE_PASS,
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|
|
|
|
"slsr", /* name */
|
2012-11-01 08:34:44 +01:00
|
|
|
|
OPTGROUP_NONE, /* optinfo_flags */
|
2012-06-26 18:27:50 +02:00
|
|
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|
gate_strength_reduction, /* gate */
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|
|
|
|
execute_strength_reduction, /* execute */
|
|
|
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|
NULL, /* sub */
|
|
|
|
|
NULL, /* next */
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|
|
|
|
0, /* static_pass_number */
|
|
|
|
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TV_GIMPLE_SLSR, /* tv_id */
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|
|
|
|
PROP_cfg | PROP_ssa, /* properties_required */
|
|
|
|
|
0, /* properties_provided */
|
|
|
|
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0, /* properties_destroyed */
|
|
|
|
|
0, /* todo_flags_start */
|
|
|
|
|
TODO_verify_ssa /* todo_flags_finish */
|
|
|
|
|
}
|
|
|
|
|
};
|