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re PR target/70421 (wrong code with v16si vector and useless cast at -O -mavx512f)

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PR target/70421
	* config/i386/i386.c (ix86_expand_vector_set): Fix up argument order
	in gen_blendm expander.

	* gcc.dg/torture/pr70421.c: New test.
	* gcc.target/i386/avx512f-pr70421.c: New test.

From-SVN: r234569
This commit is contained in:
Jakub Jelinek 2016-03-30 16:06:51 +02:00
parent 1f73ef6c45
commit d43242b9b9
5 changed files with 56 additions and 2 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,9 @@
2016-03-30 Jakub Jelinek <jakub@redhat.com>
PR target/70421
* config/i386/i386.c (ix86_expand_vector_set): Fix up argument order
in gen_blendm expander.
2016-03-30 Nick Clifton <nickc@redhat.com>
PR target/62254
@ -5,7 +11,7 @@
case where we are already provided with an SImode SUBREG.
2016-03-30 Michael Matz <matz@suse.de>
Richard Biener <rguenther@suse.de>
Richard Biener <rguenther@suse.de>
PR ipa/12392
* ipa-polymorphic-call.c (struct type_change_info): Change

7
gcc/config/i386/i386.c
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@ -46932,7 +46932,12 @@ half:
{
tmp = gen_reg_rtx (mode);
emit_insn (gen_rtx_SET (tmp, gen_rtx_VEC_DUPLICATE (mode, val)));
emit_insn (gen_blendm (target, tmp, target,
/* The avx512*_blendm<mode> expanders have different operand order
from VEC_MERGE. In VEC_MERGE, the first input operand is used for
elements where the mask is set and second input operand otherwise,
in {sse,avx}*_*blend* the first input operand is used for elements
where the mask is clear and second input operand otherwise. */
emit_insn (gen_blendm (target, target, tmp,
force_reg (mmode,
gen_int_mode (1 << elt, mmode))));
}

6
gcc/testsuite/ChangeLog
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@ -1,3 +1,9 @@
2016-03-30 Jakub Jelinek <jakub@redhat.com>
PR target/70421
* gcc.dg/torture/pr70421.c: New test.
* gcc.target/i386/avx512f-pr70421.c: New test.
2016-03-30 Patrick Palka <ppalka@gcc.gnu.org>
PR tree-optimization/59124

22
gcc/testsuite/gcc.dg/torture/pr70421.c Normal file
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@ -0,0 +1,22 @@
/* PR target/70421 */
/* { dg-do run } */
/* { dg-additional-options "-Wno-psabi -w" } */
typedef unsigned V __attribute__ ((vector_size (64)));
unsigned __attribute__ ((noinline, noclone))
foo (unsigned x, V u, V v)
{
v[1] ^= v[2];
x ^= ((V) v)[u[0]];
return x;
}
int
main ()
{
unsigned x = foo (0x10, (V) { 1 }, (V) { 0x100, 0x1000, 0x10000 });
if (x != 0x11010)
__builtin_abort ();
return 0;
}

15
gcc/testsuite/gcc.target/i386/avx512f-pr70421.c Normal file
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@ -0,0 +1,15 @@
/* PR target/70421 */
/* { dg-do run } */
/* { dg-require-effective-target avx512f } */
/* { dg-options "-O2 -mavx512f" } */
#include "avx512f-check.h"
#define main() do_main()
#include "../../gcc.dg/torture/pr70421.c"
static void
avx512f_test (void)
{
do_main ();
}