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re PR tree-optimization/47060 (ICE: SIGSEGV in reduction_phi (tree-parloops.c:212) with -O -ffast-math -ftree-parallelize-loops=2 -fno-tree-dce) 

PR tree-optimization/47060
	* tree-parloops.c (reduction_phi): Return NULL if PHI is NULL.

	* gcc.dg/autopar/pr47060.c: New test.

From-SVN: r168336
This commit is contained in:
Jakub Jelinek 2010-12-30 09:24:58 +01:00 committed by Jakub Jelinek
parent dad6bca98a
commit 87ebde38c0
4 changed files with 32 additions and 1 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2010-12-30 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/47060
* tree-parloops.c (reduction_phi): Return NULL if PHI is NULL.
2010-12-29 Paul Koning <ni1d@arrl.net> 2010-12-29 Paul Koning <ni1d@arrl.net>
* config/pdp11/pdp11-protos.h (pdp11_asm_output_var): Declare. * config/pdp11/pdp11-protos.h (pdp11_asm_output_var): Declare.

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2010-12-30 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/47060
* gcc.dg/autopar/pr47060.c: New test.
2010-12-30 Nicola Pero <nicola.pero@meta-innovation.com> 2010-12-30 Nicola Pero <nicola.pero@meta-innovation.com>
* objc.dg/enhanced-proto-2.m: Updated. * objc.dg/enhanced-proto-2.m: Updated.

21
gcc/testsuite/gcc.dg/autopar/pr47060.c Normal file
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@ -0,0 +1,21 @@
/* PR tree-optimization/47060 */
/* { dg-do compile } */
/* { dg-options "-O -ffast-math -ftree-parallelize-loops=2 -fno-tree-dce" } */
struct S
{
int n;
float *a;
};
float
foo (struct S *b)
{
float c, d;
int j;
for (j = 0; j < b->n; j++)
d += b->a[j];
for (j = 0; j < b->n; j++)
c += b->a[j];
return d;
}

2
gcc/tree-parloops.c
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@ -201,7 +201,7 @@ reduction_phi (htab_t reduction_list, gimple phi)
{ {
struct reduction_info tmpred, *red; struct reduction_info tmpred, *red;
if (htab_elements (reduction_list) == 0) if (htab_elements (reduction_list) == 0 || phi == NULL)
return NULL; return NULL;
tmpred.reduc_phi = phi; tmpred.reduc_phi = phi;