procyberian/gcc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

i386.c (ix86_prepare_sse_fp_compare_args): For GE/GT/UNLE/UNLT swap arguments and condition even for TARGET_AVX.

Browse source 
* config/i386/i386.c (ix86_prepare_sse_fp_compare_args): For
	GE/GT/UNLE/UNLT swap arguments and condition even for TARGET_AVX.

	* gcc.target/i386/avxfp-1.c: New test.
	* gcc.target/i386/avxfp-2.c: New test.

From-SVN: r179119
This commit is contained in:
Jakub Jelinek 2011-09-23 16:35:05 +02:00 • committed by Jakub Jelinek
parent 9e4ef69ef8
commit 50926346e5
5 changed files with 50 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
gcc/ChangeLog
View file

@ -1,3 +1,8 @@
2011-09-23 Jakub Jelinek <jakub@redhat.com>
* config/i386/i386.c (ix86_prepare_sse_fp_compare_args): For
GE/GT/UNLE/UNLT swap arguments and condition even for TARGET_AVX.
2011-09-23 Ian Lance Taylor <iant@google.com>
* godump.c (go_define): Treat a single character in single quotes,

17
gcc/config/i386/i386.c
View file

@ -18735,15 +18735,13 @@ ix86_prepare_sse_fp_compare_args (rtx dest, enum rtx_code code,
{
rtx tmp;
/* AVX supports all the needed comparisons, no need to swap arguments
nor help reload. */
if (TARGET_AVX)
return code;
switch (code)
{
case LTGT:
case UNEQ:
/* AVX supports all the needed comparisons. */
if (TARGET_AVX)
break;
/* We have no LTGT as an operator. We could implement it with
NE & ORDERED, but this requires an extra temporary. It's
not clear that it's worth it. */
@ -18760,6 +18758,9 @@ ix86_prepare_sse_fp_compare_args (rtx dest, enum rtx_code code,
case NE:
case UNORDERED:
case ORDERED:
/* AVX has 3 operand comparisons, no need to swap anything. */
if (TARGET_AVX)
break;
/* For commutative operators, try to canonicalize the destination
operand to be first in the comparison - this helps reload to
avoid extra moves. */
@ -18771,8 +18772,10 @@ ix86_prepare_sse_fp_compare_args (rtx dest, enum rtx_code code,
case GT:
case UNLE:
case UNLT:
/* These are not supported directly. Swap the comparison operands
to transform into something that is supported. */
/* These are not supported directly before AVX, and furthermore
ix86_expand_sse_fp_minmax only optimizes LT/UNGE. Swap the
comparison operands to transform into something that is
supported. */
tmp = *pop0;
*pop0 = *pop1;
*pop1 = tmp;

5
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,8 @@
2011-09-23 Jakub Jelinek <jakub@redhat.com>
* gcc.target/i386/avxfp-1.c: New test.
* gcc.target/i386/avxfp-2.c: New test.
2011-09-23 Terry Guo <terry.guo@arm.com>
* gcc.c-torture/execute/941014-1.x: Deleted.

15
gcc/testsuite/gcc.target/i386/avxfp-1.c Normal file
View file

@ -0,0 +1,15 @@
/* { dg-do compile } */
/* { dg-options "-O2 -mavx -mfpmath=sse" } */
/* { dg-final { scan-assembler "vmaxsd" } } */
/* { dg-final { scan-assembler "vminsd" } } */
double x;
t()
{
x=x>5?x:5;
}
double x;
q()
{
x=x<5?x:5;
}

15
gcc/testsuite/gcc.target/i386/avxfp-2.c Normal file
View file

@ -0,0 +1,15 @@
/* { dg-do compile } */
/* { dg-options "-O2 -mavx -mfpmath=sse" } */
/* { dg-final { scan-assembler "vmaxsd" } } */
/* { dg-final { scan-assembler "vminsd" } } */
double x;
q()
{
x=x<5?5:x;
}
double x;
q1()
{
x=x>5?5:x;
}