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r237069 - in /trunk/gcc: ChangeLog builtins.c b...
- From: bernds at gcc dot gnu dot org
- To: gcc-cvs at gcc dot gnu dot org
- Date: Fri, 03 Jun 2016 14:20:54 -0000
- Subject: r237069 - in /trunk/gcc: ChangeLog builtins.c b...
Author: bernds
Date: Fri Jun 3 14:20:53 2016
New Revision: 237069
URL: https://gcc.gnu.org/viewcvs?rev=237069&root=gcc&view=rev
Log:
PR tree-optimization/52171
* builtins.c (expand_cmpstrn_or_cmpmem): Delete, moved elsewhere.
(expand_builtin_memcmp): New arg RESULT_EQ. All callers changed.
Look for constant strings. Move some code to emit_block_cmp_hints
and use it.
* builtins.def (BUILT_IN_MEMCMP_EQ): New.
* defaults.h (COMPARE_MAX_PIECES): New macro.
* expr.c (move_by_pieces_d, store_by_pieces_d): Remove old structs.
(move_by_pieces_1, store_by_pieces_1, store_by_pieces_2): Remvoe.
(clear_by_pieces_1): Don't declare. Move definition before use.
(can_do_by_pieces): New static function.
(can_move_by_pieces): Use it. Return bool.
(by_pieces_ninsns): Renamed from move_by_pieces_ninsns. New arg
OP. All callers changed. Handle COMPARE_BY_PIECES.
(class pieces_addr); New.
(pieces_addr::pieces_addr, pieces_addr::decide_autoinc,
pieces_addr::adjust, pieces_addr::increment_address,
pieces_addr::maybe_predec, pieces_addr::maybe_postinc): New member
functions for it.
(class op_by_pieces_d): New.
(op_by_pieces_d::op_by_pieces_d, op_by_pieces_d::run): New member
functions for it.
(class move_by_pieces_d, class compare_by_pieces_d,
class store_by_pieces_d): New subclasses of op_by_pieces_d.
(move_by_pieces_d::prepare_mode, move_by_pieces_d::generate,
move_by_pieces_d::finish_endp, store_by_pieces_d::prepare_mode,
store_by_pieces_d::generate, store_by_pieces_d::finish_endp,
compare_by_pieces_d::generate, compare_by_pieces_d::prepare_mode,
compare_by_pieces_d::finish_mode): New member functions.
(compare_by_pieces, emit_block_cmp_via_cmpmem): New static
functions.
(expand_cmpstrn_or_cmpmem): Moved here from builtins.c.
(emit_block_cmp_hints): New function.
(move_by_pieces, store_by_pieces, clear_by_pieces): Rewrite to just
use the newly defined classes.
* expr.h (by_pieces_constfn): New typedef.
(can_store_by_pieces, store_by_pieces): Use it in arg declarations.
(emit_block_cmp_hints, expand_cmpstrn_or_cmpmem): Declare.
(move_by_pieces_ninsns): Don't declare.
(can_move_by_pieces): Change return value to bool.
* target.def (TARGET_USE_BY_PIECES_INFRASTRUCTURE_P): Update docs.
(compare_by_pieces_branch_ratio): New hook.
* target.h (enum by_pieces_operation): Add COMPARE_BY_PIECES.
(by_pieces_ninsns): Declare.
* targethooks.c (default_use_by_pieces_infrastructure_p): Handle
COMPARE_BY_PIECES.
(default_compare_by_pieces_branch_ratio): New function.
* targhooks.h (default_compare_by_pieces_branch_ratio): Declare.
* doc/tm.texi.in (STORE_MAX_PIECES, COMPARE_MAX_PIECES): Document.
* doc/tm.texi: Regenerate.
* tree-ssa-strlen.c: Include "builtins.h".
(handle_builtin_memcmp): New static function.
(strlen_optimize_stmt): Call it for BUILT_IN_MEMCMP.
* tree.c (build_common_builtin_nodes): Create __builtin_memcmp_eq.
testsuite/
PR tree-optimization/52171
* gcc.dg/pr52171.c: New test.
* gcc.target/i386/pr52171.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr52171.c
trunk/gcc/testsuite/gcc.target/i386/pr52171.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/builtins.c
trunk/gcc/builtins.def
trunk/gcc/defaults.h
trunk/gcc/doc/tm.texi
trunk/gcc/doc/tm.texi.in
trunk/gcc/expr.c
trunk/gcc/expr.h
trunk/gcc/target.def
trunk/gcc/target.h
trunk/gcc/targhooks.c
trunk/gcc/targhooks.h
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-strlen.c
trunk/gcc/tree.c