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re PR target/43107 (ICE: SIGSEGV with -O3 -mavx)

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PR target/43107
	* config/i386/i386.c (avx_vpermilp_parallel): Reject indexes
	greater or equal to nelt instead of 2 * nelt.
	(expand_vec_perm_1): When op0 and op1 are equal, mask indexes
	with nelt - 1.

	* gcc.target/i386/pr43107.c: New test.

From-SVN: r157022
This commit is contained in:
Jakub Jelinek 2010-02-23 23:52:20 +01:00 committed by Jakub Jelinek
parent c6569cd04e
commit 8f40ad5019
4 changed files with 47 additions and 8 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2010-02-23 Jakub Jelinek <jakub@redhat.com>
PR target/43107
* config/i386/i386.c (avx_vpermilp_parallel): Reject indexes
greater or equal to nelt instead of 2 * nelt.
(expand_vec_perm_1): When op0 and op1 are equal, mask indexes
with nelt - 1.
2010-02-23 Jason Merrill <jason@redhat.com>
PR debug/42800

22
gcc/config/i386/i386.c
View File

@ -24673,7 +24673,7 @@ avx_vpermilp_parallel (rtx par, enum machine_mode mode)
if (!CONST_INT_P (er))
return 0;
ei = INTVAL (er);
if (ei >= 2 * nelt)
if (ei >= nelt)
return 0;
ipar[i] = ei;
}
@ -29265,7 +29265,12 @@ expand_vec_perm_1 (struct expand_vec_perm_d *d)
input where SEL+CONCAT may not. */
if (d->op0 == d->op1)
{
if (expand_vselect (d->target, d->op0, d->perm, nelt))
int mask = nelt - 1;
for (i = 0; i < nelt; i++)
perm2[i] = d->perm[i] & mask;
if (expand_vselect (d->target, d->op0, perm2, nelt))
return true;
/* There are plenty of patterns in sse.md that are written for
@ -29276,8 +29281,8 @@ expand_vec_perm_1 (struct expand_vec_perm_d *d)
every other permutation operand. */
for (i = 0; i < nelt; i += 2)
{
perm2[i] = d->perm[i];
perm2[i+1] = d->perm[i+1] + nelt;
perm2[i] = d->perm[i] & mask;
perm2[i + 1] = (d->perm[i + 1] & mask) + nelt;
}
if (expand_vselect_vconcat (d->target, d->op0, d->op0, perm2, nelt))
return true;
@ -29285,11 +29290,12 @@ expand_vec_perm_1 (struct expand_vec_perm_d *d)
/* Recognize shufps, which means adding {0, 0, nelt, nelt}. */
if (nelt >= 4)
{
memcpy (perm2, d->perm, nelt);
for (i = 2; i < nelt; i += 4)
for (i = 0; i < nelt; i += 4)
{
perm2[i+0] += nelt;
perm2[i+1] += nelt;
perm2[i + 0] = d->perm[i + 0] & mask;
perm2[i + 1] = d->perm[i + 1] & mask;
perm2[i + 2] = (d->perm[i + 2] & mask) + nelt;
perm2[i + 3] = (d->perm[i + 3] & mask) + nelt;
}
if (expand_vselect_vconcat (d->target, d->op0, d->op0, perm2, nelt))

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2010-02-23 Jakub Jelinek <jakub@redhat.com>
PR target/43107
* gcc.target/i386/pr43107.c: New test.
2010-02-23 Jason Merrill <jason@redhat.com>
PR c++/43143

20
gcc/testsuite/gcc.target/i386/pr43107.c Normal file
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@ -0,0 +1,20 @@
/* PR target/43107 */
/* { dg-do compile } */
/* { dg-options "-O3 -mavx" } */
extern void bar (float b[4][4]);
void
foo ()
{
float a[4][4], b[4][4];
int i, j;
for (i = 0; i < 4; i++)
{
for (j = 0; j < 4; j++)
a[i][j] = 0;
for (j = 0; j < 4; j++)
b[i][j] = a[i][j];
}
bar (b);
}