[Bug tree-optimization/58472] New: gomp4: ICE in in vectorizable_store, at tree-vect-stmts.c:4192

["vincenzo.innocente at cern dot ch" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58472

            Bug ID: 58472
           Summary: gomp4: ICE in in vectorizable_store, at
                    tree-vect-stmts.c:4192
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vincenzo.innocente at cern dot ch

#include<cmath>
float a[1024];
float b[1024];

float sumO1() {
  auto s = 0.f;
#pragma omp simd reduction(+:s)
  for (auto i=0U;i<1024;++i) {
    s += a[i]*b[i];
  }
  return s;
}

pb-d-128-141-131-26:vectorize innocent$ c++ -std=c++11 -O2  
-ftree-vectorizer-verbose=1 -S omp4.cc -fopenmp
omp4.cc:9:13: note: loop vectorized
omp4.cc: In function âfloat sumO1()â:
omp4.cc:5:7: internal compiler error: in vectorizable_store, at
tree-vect-stmts.c:4192
 float sumO1() {
       ^

omp4.cc:5:7: internal compiler error: Abort trap: 6
c++: internal compiler error: Abort trap: 6 (program cc1plus)
Abort trap: 6