Charles Hannum
parent
f2b63869e3
commit
3245eea08a
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@ -0,0 +1,68 @@
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/* Define control and data flow tables, and regsets.
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Copyright (C) 1987 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License 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 GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* Number of bits in each actual element of a regset. */
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#define REGSET_ELT_BITS HOST_BITS_PER_WIDE_INT
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/* Type to use for a regset element. Note that lots of code assumes
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that the initial part of a regset that contains information on the
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hard registers is the same format as a HARD_REG_SET. */
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#define REGSET_ELT_TYPE HOST_WIDE_INT
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/* Define the type for a pointer to a set with a bit for each
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(hard or pseudo) register. */
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typedef REGSET_ELT_TYPE *regset;
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/* Size of a regset for the current function,
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in (1) bytes and (2) elements. */
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extern int regset_bytes;
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extern int regset_size;
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/* Number of basic blocks in the current function. */
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extern int n_basic_blocks;
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/* Index by basic block number, get first insn in the block. */
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extern rtx *basic_block_head;
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/* Index by basic block number, get last insn in the block. */
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extern rtx *basic_block_end;
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/* Index by basic block number, get address of regset
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describing the registers live at the start of that block. */
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extern regset *basic_block_live_at_start;
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/* Indexed by n, gives number of basic block that (REG n) is used in.
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If the value is REG_BLOCK_GLOBAL (-2),
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it means (REG n) is used in more than one basic block.
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REG_BLOCK_UNKNOWN (-1) means it hasn't been seen yet so we don't know.
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This information remains valid for the rest of the compilation
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of the current function; it is used to control register allocation. */
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#define REG_BLOCK_UNKNOWN -1
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#define REG_BLOCK_GLOBAL -2
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extern short *reg_basic_block;
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@ -165,8 +165,7 @@ init_caller_save ()
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for (offset = 1 << (HOST_BITS_PER_INT / 2); offset; offset >>= 1)
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{
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address = gen_rtx (PLUS, Pmode, addr_reg,
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gen_rtx (CONST_INT, VOIDmode, offset));
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address = gen_rtx (PLUS, Pmode, addr_reg, GEN_INT (offset));
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for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
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if (regno_save_mode[i] != VOIDmode
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@ -275,7 +274,7 @@ setup_save_areas (pchanged)
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if (regno_save_mem[i] != 0)
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ok &= strict_memory_address_p (regno_save_mode[i],
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XEXP (eliminate_regs (regno_save_mem[i],
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0, 0),
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0, NULL_RTX),
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0));
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return ok;
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@ -297,7 +296,8 @@ save_call_clobbered_regs (insn_mode)
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for (b = 0; b < n_basic_blocks; b++)
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{
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regset regs_live = basic_block_live_at_start[b];
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int offset, bit, i, j;
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REGSET_ELT_TYPE bit;
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int offset, i, j;
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int regno;
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/* Compute hard regs live at start of block -- this is the
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@ -318,7 +318,7 @@ save_call_clobbered_regs (insn_mode)
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for (offset = 0, i = 0; offset < regset_size; offset++)
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{
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if (regs_live[offset] == 0)
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i += HOST_BITS_PER_INT;
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i += REGSET_ELT_BITS;
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else
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for (bit = 1; bit && i < max_regno; bit <<= 1, i++)
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if ((regs_live[offset] & bit)
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@ -153,10 +153,10 @@ struct args_size
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/* Convert the implicit sum in a `struct args_size' into an rtx. */
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#define ARGS_SIZE_RTX(SIZE) \
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((SIZE).var == 0 ? gen_rtx (CONST_INT, VOIDmode, (SIZE).constant) \
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((SIZE).var == 0 ? GEN_INT ((SIZE).constant) \
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: expand_expr (size_binop (PLUS_EXPR, (SIZE).var, \
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size_int ((SIZE).constant)), \
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0, VOIDmode, 0))
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NULL_RTX, VOIDmode, 0))
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/* Convert the implicit sum in a `struct args_size' into a tree. */
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#define ARGS_SIZE_TREE(SIZE) \
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@ -527,9 +527,6 @@ extern rtx force_operand ();
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/* Return an rtx for the size in bytes of the value of an expr. */
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extern rtx expr_size ();
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/* Return an rtx for the sum of an rtx and an integer. */
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extern rtx plus_constant ();
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extern rtx lookup_static_chain ();
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/* Return an rtx like arg but sans any constant terms.
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@ -0,0 +1,267 @@
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/* Sets (bit vectors) of hard registers, and operations on them.
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Copyright (C) 1987, 1992 Free Software Foundation, Inc.
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This file is part of GNU CC
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License 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 GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* Define the type of a set of hard registers. */
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/* If HARD_REG_SET is a macro, its definition is a scalar type
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that has enough bits for all the target machine's hard registers.
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Otherwise, it is a typedef for a suitable array of HOST_WIDE_INTs,
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and HARD_REG_SET_LONGS is how many.
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Note that lots of code assumes that the first part of a regset is
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the same format as a HARD_REG_SET. To help make sure this is true,
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we only try the widest integer mode (HOST_WIDE_INT) instead of all the
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smaller types. This only loses if there are a very few registers and
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then only in the few cases where we have an array of HARD_REG_SETs,
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so it isn't worth making this as complex as it used to be. */
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#if FIRST_PSEUDO_REGISTER <= HOST_BITS_PER_WIDE_INT
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#define HARD_REG_SET HOST_WIDE_INT
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#else
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#define HARD_REG_SET_LONGS \
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((FIRST_PSEUDO_REGISTER + HOST_BITS_PER_WIDE_INT - 1) \
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/ HOST_BITS_PER_WIDE_INT)
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typedef HOST_WIDE_INT HARD_REG_SET[HARD_REG_SET_LONGS];
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#endif
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/* HARD_CONST is used to cast a constant to a HARD_REG_SET
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if that is a scalar wider than an integer. */
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#ifdef HARD_REG_SET
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#define HARD_CONST(X) ((HARD_REG_SET) (X))
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#else
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#define HARD_CONST(X) (X)
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#endif
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/* Define macros SET_HARD_REG_BIT, CLEAR_HARD_REG_BIT and TEST_HARD_REG_BIT
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to set, clear or test one bit in a hard reg set of type HARD_REG_SET.
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All three take two arguments: the set and the register number.
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In the case where sets are arrays of longs, the first argument
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is actually a pointer to a long.
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Define two macros for initializing a set:
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CLEAR_HARD_REG_SET and SET_HARD_REG_SET.
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These take just one argument.
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Also define macros for copying hard reg sets:
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COPY_HARD_REG_SET and COMPL_HARD_REG_SET.
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These take two arguments TO and FROM; they read from FROM
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and store into TO. COMPL_HARD_REG_SET complements each bit.
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Also define macros for combining hard reg sets:
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IOR_HARD_REG_SET and AND_HARD_REG_SET.
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These take two arguments TO and FROM; they read from FROM
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and combine bitwise into TO. Define also two variants
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IOR_COMPL_HARD_REG_SET and AND_COMPL_HARD_REG_SET
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which use the complement of the set FROM.
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Also define GO_IF_HARD_REG_SUBSET (X, Y, TO):
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if X is a subset of Y, go to TO.
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*/
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#ifdef HARD_REG_SET
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#define SET_HARD_REG_BIT(SET, BIT) \
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((SET) |= HARD_CONST (1) << (BIT))
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#define CLEAR_HARD_REG_BIT(SET, BIT) \
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((SET) &= ~(HARD_CONST (1) << (BIT)))
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#define TEST_HARD_REG_BIT(SET, BIT) \
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((SET) & (HARD_CONST (1) << (BIT)))
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#define CLEAR_HARD_REG_SET(TO) ((TO) = HARD_CONST (0))
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#define SET_HARD_REG_SET(TO) ((TO) = HARD_CONST (-1))
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#define COPY_HARD_REG_SET(TO, FROM) ((TO) = (FROM))
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#define COMPL_HARD_REG_SET(TO, FROM) ((TO) = ~(FROM))
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#define IOR_HARD_REG_SET(TO, FROM) ((TO) |= (FROM))
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#define IOR_COMPL_HARD_REG_SET(TO, FROM) ((TO) |= ~ (FROM))
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#define AND_HARD_REG_SET(TO, FROM) ((TO) &= (FROM))
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#define AND_COMPL_HARD_REG_SET(TO, FROM) ((TO) &= ~ (FROM))
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#define GO_IF_HARD_REG_SUBSET(X,Y,TO) if (HARD_CONST (0) == ((X) & ~(Y))) goto TO
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#define GO_IF_HARD_REG_EQUAL(X,Y,TO) if ((X) == (Y)) goto TO
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#else
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#define UHOST_BITS_PER_WIDE_INT ((unsigned) HOST_BITS_PER_WIDE_INT)
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#define SET_HARD_REG_BIT(SET, BIT) \
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((SET)[(BIT) / UHOST_BITS_PER_WIDE_INT] \
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|= (HOST_WIDE_INT) 1 << ((BIT) % UHOST_BITS_PER_WIDE_INT))
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#define CLEAR_HARD_REG_BIT(SET, BIT) \
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((SET)[(BIT) / UHOST_BITS_PER_WIDE_INT] \
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&= ~((HOST_WIDE_INT) 1 << ((BIT) % UHOST_BITS_PER_WIDE_INT)))
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#define TEST_HARD_REG_BIT(SET, BIT) \
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((SET)[(BIT) / UHOST_BITS_PER_WIDE_INT] \
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& ((HOST_WIDE_INT) 1 << ((BIT) % UHOST_BITS_PER_WIDE_INT)))
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#define CLEAR_HARD_REG_SET(TO) \
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do { register HOST_WIDE_INT *scan_tp_ = (TO); \
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register int i; \
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for (i = 0; i < HARD_REG_SET_LONGS; i++) \
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*scan_tp_++ = 0; } while (0)
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#define SET_HARD_REG_SET(TO) \
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do { register HOST_WIDE_INT *scan_tp_ = (TO); \
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register int i; \
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for (i = 0; i < HARD_REG_SET_LONGS; i++) \
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*scan_tp_++ = -1; } while (0)
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#define COPY_HARD_REG_SET(TO, FROM) \
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do { register HOST_WIDE_INT *scan_tp_ = (TO), *scan_fp_ = (FROM); \
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register int i; \
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for (i = 0; i < HARD_REG_SET_LONGS; i++) \
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*scan_tp_++ = *scan_fp_++; } while (0)
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#define COMPL_HARD_REG_SET(TO, FROM) \
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do { register HOST_WIDE_INT *scan_tp_ = (TO), *scan_fp_ = (FROM); \
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register int i; \
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for (i = 0; i < HARD_REG_SET_LONGS; i++) \
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*scan_tp_++ = ~ *scan_fp_++; } while (0)
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#define AND_HARD_REG_SET(TO, FROM) \
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do { register HOST_WIDE_INT *scan_tp_ = (TO), *scan_fp_ = (FROM); \
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register int i; \
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for (i = 0; i < HARD_REG_SET_LONGS; i++) \
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*scan_tp_++ &= *scan_fp_++; } while (0)
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#define AND_COMPL_HARD_REG_SET(TO, FROM) \
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do { register HOST_WIDE_INT *scan_tp_ = (TO), *scan_fp_ = (FROM); \
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register int i; \
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for (i = 0; i < HARD_REG_SET_LONGS; i++) \
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*scan_tp_++ &= ~ *scan_fp_++; } while (0)
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#define IOR_HARD_REG_SET(TO, FROM) \
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do { register HOST_WIDE_INT *scan_tp_ = (TO), *scan_fp_ = (FROM); \
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register int i; \
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for (i = 0; i < HARD_REG_SET_LONGS; i++) \
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*scan_tp_++ |= *scan_fp_++; } while (0)
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#define IOR_COMPL_HARD_REG_SET(TO, FROM) \
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do { register HOST_WIDE_INT *scan_tp_ = (TO), *scan_fp_ = (FROM); \
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register int i; \
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for (i = 0; i < HARD_REG_SET_LONGS; i++) \
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*scan_tp_++ |= ~ *scan_fp_++; } while (0)
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#define GO_IF_HARD_REG_SUBSET(X,Y,TO) \
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do { register HOST_WIDE_INT *scan_xp_ = (X), *scan_yp_ = (Y); \
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register int i; \
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for (i = 0; i < HARD_REG_SET_LONGS; i++) \
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if (0 != (*scan_xp_++ & ~*scan_yp_++)) break; \
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if (i == HARD_REG_SET_LONGS) goto TO; } while (0)
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#define GO_IF_HARD_REG_EQUAL(X,Y,TO) \
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do { register HOST_WIDE_INT *scan_xp_ = (X), *scan_yp_ = (Y); \
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register int i; \
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for (i = 0; i < HARD_REG_SET_LONGS; i++) \
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if (*scan_xp_++ != ~*scan_yp_++)) break; \
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if (i == HARD_REG_SET_LONGS) goto TO; } while (0)
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#endif
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/* Define some standard sets of registers. */
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/* Indexed by hard register number, contains 1 for registers
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that are fixed use (stack pointer, pc, frame pointer, etc.).
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These are the registers that cannot be used to allocate
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a pseudo reg whose life does not cross calls. */
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extern char fixed_regs[FIRST_PSEUDO_REGISTER];
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/* The same info as a HARD_REG_SET. */
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extern HARD_REG_SET fixed_reg_set;
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/* Indexed by hard register number, contains 1 for registers
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that are fixed use or are clobbered by function calls.
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These are the registers that cannot be used to allocate
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a pseudo reg whose life crosses calls. */
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extern char call_used_regs[FIRST_PSEUDO_REGISTER];
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/* The same info as a HARD_REG_SET. */
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extern HARD_REG_SET call_used_reg_set;
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/* Indexed by hard register number, contains 1 for registers that are
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fixed use -- i.e. in fixed_regs -- or a function value return register
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or STRUCT_VALUE_REGNUM or STATIC_CHAIN_REGNUM. These are the
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registers that cannot hold quantities across calls even if we are
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willing to save and restore them. */
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extern char call_fixed_regs[FIRST_PSEUDO_REGISTER];
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/* The same info as a HARD_REG_SET. */
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extern HARD_REG_SET call_fixed_reg_set;
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/* Indexed by hard register number, contains 1 for registers
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that are being used for global register decls.
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These must be exempt from ordinary flow analysis
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and are also considered fixed. */
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extern char global_regs[FIRST_PSEUDO_REGISTER];
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/* Table of register numbers in the order in which to try to use them. */
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#ifdef REG_ALLOC_ORDER /* Avoid undef symbol in certain broken linkers. */
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extern int reg_alloc_order[FIRST_PSEUDO_REGISTER];
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#endif
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/* For each reg class, a HARD_REG_SET saying which registers are in it. */
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extern HARD_REG_SET reg_class_contents[];
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/* For each reg class, number of regs it contains. */
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extern int reg_class_size[N_REG_CLASSES];
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/* For each reg class, table listing all the containing classes. */
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extern enum reg_class reg_class_superclasses[N_REG_CLASSES][N_REG_CLASSES];
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/* For each reg class, table listing all the classes contained in it. */
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extern enum reg_class reg_class_subclasses[N_REG_CLASSES][N_REG_CLASSES];
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/* For each pair of reg classes,
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a largest reg class contained in their union. */
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extern enum reg_class reg_class_subunion[N_REG_CLASSES][N_REG_CLASSES];
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/* For each pair of reg classes,
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the smallest reg class that contains their union. */
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extern enum reg_class reg_class_superunion[N_REG_CLASSES][N_REG_CLASSES];
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/* Number of non-fixed registers. */
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extern int n_non_fixed_regs;
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/* Vector indexed by hardware reg giving its name. */
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extern char *reg_names[FIRST_PSEUDO_REGISTER];
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@ -100,7 +100,7 @@ struct induction
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struct induction *same; /* If this giv has been combined with another
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giv, this points to the base giv. The base
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giv will have COMBINED_WITH non-zero. */
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int const_adjust; /* Used by loop unrolling, when an address giv
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HOST_WIDE_INT const_adjust; /* Used by loop unrolling, when an address giv
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is split, and a constant is eliminated from
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the address, the -constant is stored here
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for later use. */
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@ -141,7 +141,7 @@ extern int max_uid_for_loop;
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extern int *uid_loop_num;
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extern int *loop_outer_loop;
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extern rtx *loop_number_exit_labels;
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extern unsigned long loop_n_iterations;
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extern unsigned HOST_WIDE_INT loop_n_iterations;
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extern int max_reg_before_loop;
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||||
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||||
extern FILE *loop_dump_stream;
|
||||
|
|
@ -169,7 +169,7 @@ void unroll_block_trees ();
|
|||
|
||||
void unroll_loop ();
|
||||
rtx biv_total_increment ();
|
||||
unsigned long loop_iterations ();
|
||||
unsigned HOST_WIDE_INT loop_iterations ();
|
||||
rtx final_biv_value ();
|
||||
rtx final_giv_value ();
|
||||
void emit_unrolled_add ();
|
||||
|
|
|
|||
|
|
@ -53,7 +53,7 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
|
|||
#define REAL_IS_NOT_DOUBLE
|
||||
#ifndef REAL_VALUE_TYPE
|
||||
#define REAL_VALUE_TYPE \
|
||||
struct real_value { long i[sizeof (double) / sizeof (long)]; }
|
||||
struct real_value{ HOST_WIDE_INT i[sizeof (double)/sizeof (HOST_WIDE_INT)]; }
|
||||
#endif /* no REAL_VALUE_TYPE */
|
||||
#endif /* formats differ */
|
||||
#endif /* 0 */
|
||||
|
|
@ -196,7 +196,7 @@ extern REAL_VALUE_TYPE dconstm1;
|
|||
union real_extract
|
||||
{
|
||||
REAL_VALUE_TYPE d;
|
||||
int i[sizeof (REAL_VALUE_TYPE) / sizeof (int)];
|
||||
HOST_WIDE_INT i[sizeof (REAL_VALUE_TYPE) / sizeof (HOST_WIDE_INT)];
|
||||
};
|
||||
|
||||
/* For a CONST_DOUBLE:
|
||||
|
|
@ -206,8 +206,8 @@ union real_extract
|
|||
For a float, the number of ints varies,
|
||||
and CONST_DOUBLE_LOW is the one that should come first *in memory*.
|
||||
So use &CONST_DOUBLE_LOW(r) as the address of an array of ints. */
|
||||
#define CONST_DOUBLE_LOW(r) XINT (r, 2)
|
||||
#define CONST_DOUBLE_HIGH(r) XINT (r, 3)
|
||||
#define CONST_DOUBLE_LOW(r) XWINT (r, 2)
|
||||
#define CONST_DOUBLE_HIGH(r) XWINT (r, 3)
|
||||
|
||||
/* Link for chain of all CONST_DOUBLEs in use in current function. */
|
||||
#define CONST_DOUBLE_CHAIN(r) XEXP (r, 1)
|
||||
|
|
|
|||
Loading…
Reference in New Issue