[Bug tree-optimization/55334] mgrid regression (ipa-cp disables vectorization)

[vincenzo.innocente at cern dot ch]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55334

--- Comment #5 from vincenzo Innocente <vincenzo.innocente at cern dot ch> 2012-11-16 10:56:11 UTC ---
is the problem similar to what described in PR55213?
or here
float mem[3*1024];
void sum() {
  float * a=mem;
  const float * b=mem+1024;
  const float * c=mem+2*1024;
  for (int i=0;i!=1024;++i)
    a[i]=b[i]+c[i];
}

6: create runtime check for data references *_7 and *_6
6: create runtime check for data references *_9 and *_6
6: created 2 versioning for alias checks.