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testsuite/105122 - adjust testcases after memcpy folding changes 

After r12-7931 we again honor MOVE_MAX when folding memcpy to
a load/store pair.  On i?86-*-* without SSE this now exposes the
change done in r12-2666-g29f0e955c97da0 which adjusts MOVE_MAX
from 16 to 4 on those targets.  This makes adjusting testcases
necessary that assume that we transform memcpy to load/store pairs
on GIMPLE for sizes larger or equal to 8.

2022-04-04  Richard Biener  <rguenther@suse.de>

	PR testsuite/105122
	* gcc.dg/memcpy-6.c: Adjust.
	* gcc.dg/strlenopt-73.c: Likewise.
	* gcc.dg/strlenopt-80.c: Likewise.
This commit is contained in:
Richard Biener 2022-04-04 08:41:59 +02:00
parent 83b43c74bb
commit e2a818641b
3 changed files with 5 additions and 3 deletions
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3
gcc/testsuite/gcc.dg/memcpy-6.c
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@ -6,7 +6,8 @@
of targets where it's known to pass (see PR testsuite/83483).
{ dg-do compile }
{ dg-options "-O0 -Wrestrict -fdump-tree-optimized" }
{ dg-skip-if "skip non-x86 targets" { ! { i?86-*-* x86_64-*-* } } } */
{ dg-skip-if "skip non-x86 targets" { ! { i?86-*-* x86_64-*-* } } }
{ dg-additional-options "-msse" { target i?86-*-* x86_64-*-* } } */
char a[32];

2
gcc/testsuite/gcc.dg/strlenopt-73.c
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@ -69,7 +69,7 @@ void test_copy_cond_equal_length (void)
T ( 0 ==, 33, 1, (i0 ? a32 : b32) + 32);
}
#if defined(__i386__) || defined(__x86_64__) || defined(__aarch64__) \
#if (defined(__i386__) && defined(__SSE__)) || defined(__x86_64__) || defined(__aarch64__) \
|| defined(__s390__) || defined(__powerpc64__)
/* The following tests assume GCC transforms the memcpy calls into

3
gcc/testsuite/gcc.dg/strlenopt-80.c
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@ -5,7 +5,8 @@
such a store.
{ dg-do compile { target { { aarch64*-*-* i?86-*-* x86_64-*-* } || { { powerpc*-*-* } && lp64 } } } }
{ dg-options "-O2 -Wall -fdump-tree-optimized" } */
{ dg-options "-O2 -Wall -fdump-tree-optimized" }
{ dg-additional-options "-msse" { target i?86-*-* x86_64-*-* } } */
#define CHAR_BIT __CHAR_BIT__
#define SIZE_MAX __SIZE_MAX__