[Bug optimization/13424] [3.4/3.5 Regression] gcc.dg/20031202-1.c is miscompiled
cvs-commit at gcc dot gnu dot org
gcc-bugzilla@gcc.gnu.org
Thu Jan 29 08:06:00 GMT 2004
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-01-29 08:05 -------
Subject: Bug 13424
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: jakub@gcc.gnu.org 2004-01-29 08:05:49
Modified files:
gcc : ChangeLog expr.c emit-rtl.c
gcc/config/i386: i386-protos.h i386.c i386.md
Log message:
PR optimization/13424
* expr.c (store_constructor): Revert 2003-12-03 change.
* emit-rtl.c (change_address): Check also if MEM_ATTRS is set as
expected before returning early. Avoid sharing RTL if they
need to be changed.
* config/i386/i386.c (ix86_expand_movstr): Rework rep_mov and strmov
handling so that memory attributes are preserved. Don't call
ix86_set_move_mem_attrs.
(ix86_set_move_mem_attrs_1, ix86_set_move_mem_attrs): Removed.
(ix86_expand_clrstr): Rename src argument to
dst. Rework rep_stos and strset handling so that memory attributes
are preserved.
(ix86_expand_strlen): Pass src argument to
ix86_expand_strlensi_unroll_1. Rework strlenqi_1 handling so that
memory attributes are preserved.
(ix86_expand_strlensi_unroll_1): Add src argument. Use
change_address instead of gen_rtx_MEM.
* config/i386/i386.md (strmov, strmov_singleop, rep_mov): New
expanders.
(strmovdi_rex64, strmovsi, strmovsi_rex64, strmovhi, strmovhi_rex64,
strmovqi, strmovqi_rex64): Remove.
(rep_mov*, strmov*): Prefix insn names with *.
(strset, strset_singleop, rep_stos): New expanders.
(strsetdi_rex64, strsetsi, strsetsi_rex64, strsethi, strsethi_rex64,
strsetqi, strsetqi_rex64): Remove.
(rep_stos*, strset*): Prefix insn names with *.
(rep_stosqi_rex64): Likewise. Fix mode of dirflag reg from DImode
to SImode.
(cmpstrsi): Rework cmpstrqi_1 handling so that memory attributes
are preserved.
(cmpstrqi_nz_1, cmpstrqi_nz_rex_1, cmpstrqi_1, cmpstrqi_rex_1):
Prefix insn names with *.
(cmpstrqi_nz_1, cmpstrqi_1): New expanders.
(strlenqi_1, strlenqi_rex_1): Prefix insn names with *.
(strlenqi_1): New expander.
* config/i386/i386.h (ix86_set_move_mem_attrs): Remove prototype.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.2548&r2=2.2549
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/expr.c.diff?cvsroot=gcc&r1=1.618&r2=1.619
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/emit-rtl.c.diff?cvsroot=gcc&r1=1.369&r2=1.370
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/i386/i386-protos.h.diff?cvsroot=gcc&r1=1.104&r2=1.105
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/i386/i386.c.diff?cvsroot=gcc&r1=1.639&r2=1.640
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/i386/i386.md.diff?cvsroot=gcc&r1=1.505&r2=1.506
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13424
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