[Bug middle-end/37742] [4.4 Regression] ICE in vectorizer with restrict pointer

[rguenth at gcc dot gnu dot org]

------- Comment #20 from rguenth at gcc dot gnu dot org  2008-11-20 16:25 
-------
Reduced testcase for the libgfortran failure (-O2 -ftree-vectorize):

void matmul_i4 (int * __restrict dest_y,
                const int * __restrict abase,
                const int * __restrict bbase_y,
                int count, int xcount, int ycount, int aystride)
{               
  int x, y, n;
  const int * __restrict abase_n;
  int bbase_yn;
  for (y = 0; y < ycount; y++)
    for (n = 0; n < count; n++) {
        abase_n = abase + n*aystride;
        bbase_yn = bbase_y[n];
        for (x = 0; x < xcount; x++)
          dest_y[x] += abase_n[x] * bbase_yn; 
    }
}


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37742