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Re: optimization/6703: optimized memset fills incorrect number ofbytes for void** parameter
- From: Glen Nakamura <glen at imodulo dot com>
- To: gcc-gnats at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org,dbaron at fas dot harvard dot edu, gcc-bugs at gcc dot gnu dot org, nobody at gcc dot gnu dot org
- Date: Sun, 19 May 2002 23:48:23 -1000
- Subject: Re: optimization/6703: optimized memset fills incorrect number ofbytes for void** parameter
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6703
This patch extracted from cvs diff -r 1.386 -r 1.387 seems to fix the problem:
ChangeLog
===================================================================
Tue Apr 23 14:24:25 CEST 2002 Jan Hubicka <jh@suse.cz>
* i386.c (ix86_expand_clrstr): Fix typo.
Index: i386.c
===================================================================
RCS file: /cvsroot/gcc/gcc/gcc/config/i386/i386.c,v
retrieving revision 1.368.2.9
diff -c -3 -p -r1.368.2.9 i386.c
*** i386.c 23 Apr 2002 08:11:22 -0000 1.368.2.9
--- i386.c 20 May 2002 09:30:28 -0000
*************** ix86_expand_clrstr (src, count_exp, alig
*** 9420,9426 ****
gen_rtx_SUBREG (SImode, zeroreg, 0)));
if (TARGET_64BIT && (align <= 4 || count == 0))
{
! rtx label = ix86_expand_aligntest (destreg, 2);
emit_insn (gen_strsetsi (destreg,
gen_rtx_SUBREG (SImode, zeroreg, 0)));
emit_label (label);
--- 9420,9426 ----
gen_rtx_SUBREG (SImode, zeroreg, 0)));
if (TARGET_64BIT && (align <= 4 || count == 0))
{
! rtx label = ix86_expand_aligntest (countreg, 2);
emit_insn (gen_strsetsi (destreg,
gen_rtx_SUBREG (SImode, zeroreg, 0)));
emit_label (label);
*************** ix86_expand_clrstr (src, count_exp, alig
*** 9431,9437 ****
gen_rtx_SUBREG (HImode, zeroreg, 0)));
if (align <= 2 || count == 0)
{
! rtx label = ix86_expand_aligntest (destreg, 2);
emit_insn (gen_strsethi (destreg,
gen_rtx_SUBREG (HImode, zeroreg, 0)));
emit_label (label);
--- 9431,9437 ----
gen_rtx_SUBREG (HImode, zeroreg, 0)));
if (align <= 2 || count == 0)
{
! rtx label = ix86_expand_aligntest (countreg, 2);
emit_insn (gen_strsethi (destreg,
gen_rtx_SUBREG (HImode, zeroreg, 0)));
emit_label (label);
*************** ix86_expand_clrstr (src, count_exp, alig
*** 9442,9448 ****
gen_rtx_SUBREG (QImode, zeroreg, 0)));
if (align <= 1 || count == 0)
{
! rtx label = ix86_expand_aligntest (destreg, 1);
emit_insn (gen_strsetqi (destreg,
gen_rtx_SUBREG (QImode, zeroreg, 0)));
emit_label (label);
--- 9442,9448 ----
gen_rtx_SUBREG (QImode, zeroreg, 0)));
if (align <= 1 || count == 0)
{
! rtx label = ix86_expand_aligntest (countreg, 1);
emit_insn (gen_strsetqi (destreg,
gen_rtx_SUBREG (QImode, zeroreg, 0)));
emit_label (label);