PR middle-end/66867
* builtins.c (expand_ifn_atomic_compare_exchange_into_call,
expand_ifn_atomic_compare_exchange): New functions.
* internal-fn.c (expand_ATOMIC_COMPARE_EXCHANGE): New function.
* tree.h (build_call_expr_internal_loc): Rename to ...
(build_call_expr_internal_loc_array): ... this. Fix up type of
last argument.
* internal-fn.def (ATOMIC_COMPARE_EXCHANGE): New internal fn.
* predict.c (expr_expected_value_1): Handle IMAGPART_EXPR of
ATOMIC_COMPARE_EXCHANGE result.
* builtins.h (expand_ifn_atomic_compare_exchange): New prototype.
* gimple-fold.h (optimize_atomic_compare_exchange_p,
fold_builtin_atomic_compare_exchange): New prototypes.
* gimple-fold.c (optimize_atomic_compare_exchange_p,
fold_builtin_atomic_compare_exchange): New functions..
* tree-ssa.c (execute_update_addresses_taken): If
optimize_atomic_compare_exchange_p, ignore &var in 2nd argument
of call when finding addressable vars, and if such var becomes
non-addressable, call fold_builtin_atomic_compare_exchange.
From-SVN: r237814
This moves the fold rules for trunc, floor, ceil, round, nearbyint and
rint in one go, since they're tested as a group. Most of the code is
supporting the f(x)->x fold when x is known to be integer-valued.
Like with the non-negative test, this is probably more elegantly handled
by tracking range information for reals, but until that happens, I think
we should handle it analogously to tree_expr_nonnegative_p.
I've incorporated the fix for PR68031 in the new version of
integer_valued_real_p. However, it seemed confusing to test for an
SSA name at the head of the function rather than the case statement,
and not fall through to tree_simple_nonnegative_warnv_p (which
conceptually shouldn't care whether an update is in progress).
But tree_simple_nonnegative_warnv_p is a no-op for SSA names,
so I simply changed it to:
return (!name_registered_for_update_p (t)
&& depth < PARAM_VALUE (PARAM_MAX_SSA_NAME_QUERY_DEPTH)
&& gimple_stmt_nonnegative_warnv_p (SSA_NAME_DEF_STMT (t),
strict_overflow_p, depth));
and used that in the new code too.
Doing these folds later meant that IPA would start to use information
about the aborting sinf and floor in 20030125-1.c before the folds
kicked in. I changed them from noinline to weak to stop that.
Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.
gcc/
* builtins.c (integer_valued_real_p): Move to fold-const.c.
(fold_trunc_transparent_mathfn, fold_builtin_trunc, fold_builtin_floor)
(fold_builtin_ceil, fold_builtin_round): Delete.
(fold_builtin_1): Handle constant trunc, floor, ceil and round
arguments here.
* convert.c (convert_to_real): Remove narrowing of rounding
functions.
* fold-const.h (integer_valued_real_unary_p)
(integer_valued_real_binary_p, integer_valued_real_call_p)
(integer_valued_real_single_p, integer_valued_real_p): Declare.
* fold-const.c (tree_single_nonnegative_warnv_p): Move
name_registered_for_update_p check to SSA_NAME case statement.
Don't call tree_simple_nonnegative_warnv_p for SSA names.
(integer_valued_real_unary_p, integer_valued_real_binary_p)
(integer_valued_real_call_p, integer_valued_real_single_p)
(integer_valued_real_invalid_p): New functions.
(integer_valued_real_p): Move from fold-const.c and rework
to call the functions above. Handle SSA names.
* gimple-fold.h (gimple_stmt_integer_valued_real_p): Declare.
* gimple-fold.c (gimple_assign_integer_valued_real_p)
(gimple_call_integer_valued_real_p, gimple_phi_integer_valued_real_p)
(gimple_stmt_integer_valued_real_p): New functions.
* match.pd: Fold f(f(x))->f(x) for fp->fp rounding functions f.
Fold f(x)->x for the same f if x is known to be integer-valued.
Fold f(extend(x))->extend(f'(x)) if doing so doesn't affect
the result. Canonicalize floor(x) as trunc(x) if x is
nonnegative.
gcc/testsuite/
* gcc.c-torture/execute/20030125-1.c (floor, floorf, sin, sinf):
Make weak rather than noinline.
* gcc.dg/builtins-57.c: Compile with -O.
* gcc.dg/torture/builtin-integral-1.c: Skip for -O0.
From-SVN: r229221
2015-10-16 Richard Biener <rguenther@suse.de>
* gimple-fold.c (gimple_fold_builtin_memory_op): Use gimple_build
and get rid of force_gimple_operand_gsi.
(gimple_fold_builtin_memory_chk): Likewise.
(gimple_fold_builtin_stxcpy_chk): Likewise.
(rewrite_to_defined_overflow): Likewise.
(gimple_convert_to_ptrofftype): New function.
* gimple-fold.h (gimple_convert_to_ptrofftype): New overload,
declare.
From-SVN: r228863
The upcoming patch to move sqrt and cbrt simplifications to match.pd
caused a regression because the (abs @0)->@0 simplification didn't
trigger for:
(abs (convert (abs X)))
The simplification is based on tree_expr_nonnegative_p, which at
the moment just gives up if it sees an SSA_NAME.
This patch makes tree_expr_nonnegative_p recurse into SSA name
definitions, but limits the depth of recursion to a small number
for the reason mentioned in the comment (adapted from an existing
comment in gimple_val_nonnegative_real_p). The patch reuses code
in tree-vrp.c, moving it to gimple-fold.c. It also replaces calls
to gimple_val_nonnegative_real_p with calls to tree_expr_nonnegative_p.
A knock-on effect is that we can now prove _i_589 < 0 is false in
sequences like:
i_1917 = ASSERT_EXPR <i_1075, i_1075 == 0>;
_i_589 = (const int) i_1917;
_i_1507 = ASSERT_EXPR <_i_589, _i_589 < 0>;
This defeats an assert in tree-vrp.c that ASSERT_EXPR conditions
are never known to be false. Previously the assert only ever used
local knowledge and so would be limited to cases like x != x for
integer x. Now that we use global knowledge it's possible to prove
the assertion condition is false in blocks that are in practice
unreachable. The patch therefore removes the assert.
Bootstrapped & regression-tested on x86_64-linux-gnu. I didn't write
a specific test because this is already covered by the testsuite if
the follow-on patch is also applied.
gcc/
* params.def (PARAM_MAX_SSA_NAME_QUERY_DEPTH): New param.
* doc/invoke.texi (--param max-ssa-name-query-depth): Document.
* fold-const.h (tree_unary_nonnegative_warnv_p)
(tree_single_nonnegative_warnv_p, tree_call_nonnegative_warnv_p)
(tree_expr_nonnegative_warnv_p): Add depth parameters.
* fold-const.c: Include gimple-fold.h and params.h.
(tree_ssa_name_nonnegative_warnv_p): New function.
(tree_unary_nonnegative_warnv_p, tree_binary_nonnegative_warnv_p)
(tree_single_nonnegative_warnv_p, tree_call_nonnegative_warnv_p)
(tree_invalid_nonnegative_warnv_p, tree_expr_nonnegative_warnv_p):
Add a depth parameter and increment it for recursive calls to
tree_expr_nonnegative_warnv_p. Use tree_ssa_name_nonnegative_warnv_p
to handle SSA names.
* gimple-fold.h (gimple_val_nonnegative_real_p): Delete.
(gimple_stmt_nonnegative_warnv_p): Declare.
* tree-vrp.c (remove_range_assertions): Remove assert that condition
cannot be proven false.
(gimple_assign_nonnegative_warnv_p, gimple_call_nonnegative_warnv_p)
(gimple_stmt_nonnegative_warnv_p): Move to...
* gimple-fold.c: ...here. Add depth parameters and pass them
down to the tree routines. Accept statements that aren't
assignments or calls but just return false for them.
(gimple_val_nonnegative_real_p): Delete.
* tree-ssa-math-opts.c (gimple_expand_builtin_pow): Use
tree_expr_nonnegative_p instead of gimple_val_nonnegative_real_p.
Check HONOR_NANs first.
From-SVN: r228614
This renames the gimple_statement_base struct to gimple removes the
typedef of gimple_statement_base * to gimple, and then adjusts all of
the places that use the type.
gcc/ChangeLog:
2015-09-19 Trevor Saunders <tbsaunde@tbsaunde.org>
* coretypes.h (gimple): Change typedef to be a forward
declaration.
* gimple.h (gimple_statement_base): rename to gimple.
* (all functions and types using gimple): Adjust.
* *.[ch]: Likewise.
gcc/cp/ChangeLog:
2015-09-19 Trevor Saunders <tbsaunde@tbsaunde.org>
* cp-gimplify.c (gimplify_must_not_throw_expr): Adjust.
From-SVN: r227941
2014-11-24 Richard Biener <rguenther@suse.de>
PR tree-optimization/63679
* tree-ssa-sccvn.c: Include ipa-ref.h, plugin-api.h and cgraph.h.
(copy_reference_ops_from_ref): Fix non-constant ADDR_EXPR case
to properly leave off at -1.
(fully_constant_vn_reference_p): Generalize folding from
constant initializers.
(vn_reference_lookup_3): When looking through aggregate copies
handle offsetted reads and try simplifying the result to
a constant.
* gimple-fold.h (fold_ctor_reference): Export.
* gimple-fold.c (fold_ctor_reference): Likewise.
* gcc.dg/tree-ssa/ssa-fre-42.c: New testcase.
* gcc.dg/tree-ssa/20030807-5.c: Avoid folding read from global to zero.
* gcc.target/i386/ssetype-1.c: Likewise.
* gcc.target/i386/ssetype-3.c: Likewise.
* gcc.target/i386/ssetype-5.c: Likewise.
From-SVN: r218019
2014-11-14 Richard Biener <rguenther@suse.de>
* gimple-fold.h (gimple_fold_stmt_to_constant_1): Add 2nd
valueization hook defaulted to no_follow_ssa_edges.
* gimple-fold.c (gimple_fold_stmt_to_constant_1): Pass
2nd valueization hook to gimple_simplify.
* tree-ssa-ccp.c (valueize_op_1): New function to be
used for gimple_simplify called via gimple_fold_stmt_to_constant_1.
(ccp_fold): Adjust.
* tree-vrp.c (vrp_valueize_1): New function to be
used for gimple_simplify called via gimple_fold_stmt_to_constant_1.
(vrp_visit_assignment_or_call): Adjust.
From-SVN: r217560
2014-10-24 Richard Biener <rguenther@suse.de>
* genmatch.c (expr::gen_transform): Use fold_buildN_loc
and build_call_expr_loc.
(dt_simplify::gen): Drop non_lvalue for GIMPLE, use
non_lvalue_loc to build it for GENERIC.
(decision_tree::gen_generic): Add location argument to
generic_simplify prototype.
(capture_info): New class.
(capture_info::capture_info): New constructor.
(capture_info::walk_match): New method.
(capture_info::walk_result): New method.
(capture_info::walk_c_expr): New method.
(dt_simplify::gen): Handle preserving side-effects for
GENERIC code generation.
(decision_tree::gen_generic): Do not reject operands
with TREE_SIDE_EFFECTS.
* generic-match.h: New file.
* generic-match-head.c: Include generic-match.h, not gimple-match.h.
* match.pd: Add some constant folding patterns from fold-const.c.
* fold-const.c: Include generic-match.h.
(fold_unary_loc): Dispatch to generic_simplify.
(fold_ternary_loc): Likewise.
(fold_binary_loc): Likewise. Remove patterns now implemented
by generic_simplify.
* gimple-fold.c (replace_stmt_with_simplification): New function.
(fold_stmt_1): Add valueize parameter, dispatch to gimple_simplify.
(no_follow_ssa_edges): New function.
(fold_stmt): New overload with valueization hook. Use
no_follow_ssa_edges for the overload without hook.
(fold_stmt_inplace): Likewise.
* gimple-fold.h (no_follow_ssa_edges): Declare.
From-SVN: r216631
PR ipa/59831
* g++.dg/ipa/devirt-24.C: New testcase.
* ipa-cp.c (ipa_get_indirect_edge_target_1): Give up on -fno-devirtualize;
Try to devirtualize by the knowledge of virtual table pointer given by
aggregate propagation.
* ipa-prop.c (try_make_edge_direct_virtual_call): Likewise.
ipa_print_node_jump_functions): Dump also offset that
is relevant for polymorphic calls.
(determine_known_aggregate_parts): Add arg_type parameter; use it
instead of determining the type from pointer type.
(ipa_compute_jump_functions_for_edge): Update call of
determine_known_aggregate_parts.
* gimple-fold.c (gimple_get_virt_method_for_vtable): Break out from ...
(gimple_get_virt_method_for_binfo): ... here; simplify using
vtable_pointer_value_to_vtable.
* gimple-fold.h (gimple_get_virt_method_for_vtable): Declare.
* ipa-devirt.c (subbinfo_with_vtable_at_offset): Turn OFFSET parameter
to unsigned HOST_WIDE_INT; Use vtable_pointer_value_to_vtable.
(vtable_pointer_value_to_vtable): Break out from ...; handle also
POINTER_PLUS_EXPR.
(vtable_pointer_value_to_binfo): ... here.
* ipa-utils.h (vtable_pointer_value_to_vtable): Declare.
From-SVN: r207439
PR tree-optimization/59387
* tree-scalar-evolution.c: Include gimple-fold.h and gimplify-me.h.
(scev_const_prop): If folded_casts and type has undefined overflow,
use force_gimple_operand instead of force_gimple_operand_gsi and
for each added stmt if it is assign with
arith_code_with_undefined_signed_overflow, call
rewrite_to_defined_overflow.
* tree-ssa-loop-im.c: Don't include gimplify-me.h, include
gimple-fold.h instead.
(arith_code_with_undefined_signed_overflow,
rewrite_to_defined_overflow): Moved to ...
* gimple-fold.c (arith_code_with_undefined_signed_overflow,
rewrite_to_defined_overflow): ... here. No longer static.
Include gimplify-me.h.
* gimple-fold.h (arith_code_with_undefined_signed_overflow,
rewrite_to_defined_overflow): New prototypes.
* gcc.c-torture/execute/pr59387.c: New test.
From-SVN: r206583
2013-10-02 Andrew MacLeod <amacleod@redhat.com>
* tree-flow.h: Remove some prototypes.
* gimple-fold.h: Add prototypes from gimple.h and tree-flow.h.
* tree-ssa-propagate.h: Relocate prototypes from tree-flow.h.
* tree-ssa-copy.c (may_propagate*, propagate_value, replace_exp,
propagate_tree_value*): Move from here to...
* tree-ssa-propagate.c (may_propagate*, propagate_value, replace_exp,
propagate_tree_value*): Relocate here.
* tree-ssa-propagate.h: Relocate prototypes from tree-flow.h.
* gimple.h: Include gimple-fold.h, move prototypes into gimple-fold.h.
* gimple-fold.c: Remove gimple-fold.h from include list.
* tree-vrp.c: Remove gimple-fold.h from include list.
* tree-ssa-sccvn.c: Remove gimple-fold.h from include list.
* tree-ssa-ccp.c: Remove gimple-fold.h from include list.
* tree-scalar-evolution.c: Add tree-ssa-propagate.h to include list.
* tree-ssa-pre.c: Add tree-ssa-propagate.h to include list.
* sese.c: Add tree-ssa-propagate.h to include list.
From-SVN: r203118
gcc/
* alias.h: Do not include coretypes.h in header files.
* cppbuiltin.h: Likewise.
* double-int.h: Likewise.
* gimple-fold.h: Likewise.
* flags.h: Likewise.
* tree-ssa-alias.h: Likewise.
* gengtype.h (obstack_chunk_alloc, obstack_chunk_free,
OBSTACK_CHUNK_SIZE): Define here to avoid dependency on coretypes.h.
* Makefile.in (RTL_BASE_H): Depend on coretypes.h.
(TREE_H): Likewise.
(ALIAS_H): Do not depend on coretypes.h.
(FLAGS_H): Likewise.
(realmpfr.o): Depend on coretypes.h.
java/
* verify.h: Do not include system.h and coretypes.h here.
* verify-impl.c: Include them here instead.
From-SVN: r189358
2011-03-24 Richard Guenther <rguenther@suse.de>
PR tree-optimization/46562
* tree.c (build_invariant_address): New function.
* tree.h (build_invariant_address): Declare.
* tree-dfa.c (get_addr_base_and_unit_offset): Wrap around
a renamed function moved ...
* tree-flow-inline.h (get_addr_base_and_unit_offset_1): ... here.
Take valueization callback parameter.
* tree-flow.h (gimple_fold_stmt_to_constant): Declare.
* gimple-fold.h: New file.
* tree-ssa-ccp.c (ccp_fold): Use gimple_fold_stmt_to_constant_1.
(ccp_fold, fold_const_aggregate_ref,
fold_ctor_reference, fold_nonarray_ctor_reference,
fold_array_ctor_reference, fold_string_cst_ctor_reference,
get_base_constructor): Move ...
* gimple-fold.c: ... here.
(gimple_fold_stmt_to_constant_1): New function
split out from ccp_fold. Take a valueization callback parameter.
Valueize all operands.
(gimple_fold_stmt_to_constant): New wrapper function.
(fold_const_aggregate_ref_1): New function split out from
fold_const_aggregate_ref. Take a valueization callback parameter.
(fold_const_aggregate_ref): Wrap fold_const_aggregate_ref_1.
* tree-ssa-sccvn.c (simplify_binary_expression): Simplify
invariant POINTER_PLUS_EXPRs to invariant form.
(vn_valueize): New function.
(try_to_simplify): Simplify by using gimple_fold_stmt_to_constant.
* tree-vrp.c (vrp_valueize): New function.
(vrp_visit_assignment_or_call): Use gimple_fold_stmt_to_constant
to fold statements to constants.
* tree-ssa-pre.c (eliminate): Properly guard propagation of
function declarations.
* Makefile.in (tree-ssa-sccvn.o, tree-vrp.o, gimple-fold.o,
tree-ssa-ccp.o): Add gimple-fold.h dependencies.
* c-c++-common/pr46562-2.c: New testcase.
* c-c++-common/pr46562.c: Likewise.
From-SVN: r171386
Martin Sebor
Jakub Jelinek
Jakub Jelinek
Richard Sandiford
Richard Biener
Trevor Saunders
Jan Hubicka
Jan Hubicka
Richard Sandiford
Andrew MacLeod
Steven Bosscher