[Bug tree-optimization/25413] wrong alignment or incorrect address computation in vectorized code on Pentium 4 SSE

["reichelt at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #5 from reichelt at gcc dot gnu dot org  2007-04-02 21:52 -------
Any news on this one?
The bug makes tree vectorization on pentium 4 totally useless. :-(

Btw, here's a smaller code snippet for testing. Just compile it with
  gcc -O -msse2 -ftree-vectorize
on a pentium 4 and see the resulting executable segfault:

================================
struct
{
  char c;
  double d[2];
} a;

int main()
{
  int i;
  for ( i=0; i<2; ++i )
    a.d[i]=0;
  return 0;
}
================================


-- 

reichelt at gcc dot gnu dot org changed:

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25413