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ipa-cp.c (determine_versionability): Do not create constprop clones, when target_clones attribute is set.

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2016-07-22  Evgeny Stupachenko  <evstupac@gmail.com>

gcc/
	* ipa-cp.c (determine_versionability): Do not create constprop clones,
	when target_clones attribute is set.
gcc/testsuite/
	* gcc.target/i386/mvc8.c: New test.

From-SVN: r238645
This commit is contained in:
Evgeny Stupachenko 2016-07-22 15:00:42 +00:00 • committed by Ilya Verbin
parent e3fe09c154
commit 58b3986e34
4 changed files with 30 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2016-07-22 Evgeny Stupachenko <evstupac@gmail.com>
* ipa-cp.c (determine_versionability): Do not create constprop clones,
when target_clones attribute is set.
2016-07-22 Bin Cheng <bin.cheng@arm.com>
* common.opt (funsafe-loop-optimizations): Mark ignore.

7
gcc/ipa-cp.c
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@ -533,6 +533,13 @@ determine_versionability (struct cgraph_node *node,
coexist, but that may not be worth the effort. */
reason = "function has SIMD clones";
}
else if (lookup_attribute ("target_clones", DECL_ATTRIBUTES (node->decl)))
{
/* Ideally we should clone the target clones themselves and create
copies of them, so IPA-cp and target clones can happily
coexist, but that may not be worth the effort. */
reason = "function target_clones attribute";
}
/* Don't clone decls local to a comdat group; it breaks and for C++
decloned constructors, inlining is always better anyway. */
else if (node->comdat_local_p ())

4
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,7 @@
2016-07-22 Evgeny Stupachenko <evstupac@gmail.com>
* gcc.target/i386/mvc8.c: New test.
2016-07-22 Bin Cheng <bin.cheng@arm.com>
* gcc.dg/tree-ssa/pr19210-1.c: Refine test strings.

14
gcc/testsuite/gcc.target/i386/mvc8.c Normal file
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@ -0,0 +1,14 @@
/* { dg-do compile } */
/* { dg-require-ifunc "" } */
/* { dg-options "-O3 -fno-inline" } */
/* { dg-final { scan-assembler-not "constprop" } } */
__attribute__((target_clones("arch=core-avx2","arch=slm","default")))
void foo (float *a, int b) {
*a = (float)b;
}
float a;
int main() {
int i;
for (i = 0; i < 1024; i++)
foo (&a, 5);
}