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-fif-conversion
- From: Jan Hubicka <jh at suse dot cz>
- To: gcc-patches at gcc dot gnu dot org, rth at cygnus dot com
- Date: Wed, 24 Apr 2002 16:32:34 +0200
- Subject: -fif-conversion
As if conversion has sometimes negative effect at least for Athlon, I guess
we should have way to disable it. I am attaching patch to create new flag.
It can be also used as temporary workaround for the ifcvt bug.
Bootstrapped regtested i386/mainline
Honza
Tue Apr 23 11:48:53 CEST 2002 Jan HUbicka <jh@suse.cz>
* i386.c (ix86_expand_clrstr): Fix pasto.
Index: i386.c
===================================================================
RCS file: /cvs/gcc/egcs/gcc/config/i386/i386.c,v
retrieving revision 1.353.2.14
diff -c -3 -p -r1.353.2.14 i386.c
*** i386.c 16 Apr 2002 18:16:36 -0000 1.353.2.14
--- i386.c 23 Apr 2002 09:47:50 -0000
*************** ix86_expand_clrstr (src, count_exp, alig
*** 9451,9457 ****
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);
--- 9451,9457 ----
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
*** 9462,9468 ****
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);
--- 9462,9468 ----
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
*** 9473,9479 ****
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);
--- 9473,9479 ----
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);