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[Bug c/35674] New: openMP parallel for pragma with SIMD type as reduction variable crashes gcc
- From: "justin dot finnerty at uni-oldenburg dot de" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 23 Mar 2008 22:07:13 -0000
- Subject: [Bug c/35674] New: openMP parallel for pragma with SIMD type as reduction variable crashes gcc
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
I tried to combine openMP with __m128d SIMD type as reduction variable in a
parallel for loop - gcc crashed. Here is a minimal code sample to reproduce
the error, the command line and the error.
gcc -c -o test.o -march=pentium4 -fopenmp test.c
test.c: In function â??test_fnâ??:
test.c:8: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://bugs.opensuse.org> for instructions.
-- %< -- test.c --
#include <emmintrin.h>
void test_fn ()
{
__m128d sum;
int k;
#pragma omp parallel for private (k) reduction (+:sum)
for (k = 0; k < 1; ++k)
{
}
}
-- %< --
--
Summary: openMP parallel for pragma with SIMD type as reduction
variable crashes gcc
Product: gcc
Version: 4.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: justin dot finnerty at uni-oldenburg dot de
GCC build triplet: gcc version 4.2.1 (SUSE Linux) ../configure --enable-
threads=pos
GCC host triplet: i586-suse-linux
GCC target triplet: i586-suse-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35674