[Bug c/35674] New: openMP parallel for pragma with SIMD type as reduction variable crashes gcc

[justin dot finnerty at uni-oldenburg dot de]

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 ‘test_fn’:
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