gcc/testsuite/gcc.dg/vect/vect-outer-4b.c

   1 /* { dg-do compile } */
   2
   3 #define N 40
   4 #define M 128
   5 signed short in[N+M];
   6 signed short coeff[M];
   7 int out[N];
   8
   9 /* Outer-loop vectorization.
  10    Currently not vectorized because of multiple-data-types in the inner-loop.  */
  11
  12 void
  13 foo (){
  14   int i,j;
  15   int diff;
  16
  17   for (i = 0; i < N; i++) {
  18     diff = 0;
  19     for (j = 0; j < M; j+=8) {
  20       diff += in[j+i]*coeff[j];
  21     }
  22     out[i]=diff;
  23   }
  24 }
  25
  26 /* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED" 1 "vect" { xfail *-*-* } } } */
  27 /* FORNOW. not vectorized until we support 0-stride acceses like coeff[j]. should be:
  28    { scan-tree-dump-not "multiple types in nested loop." "vect" { xfail *-*-* } } } */
  29
  30 /* { dg-final { scan-tree-dump-times "zero step in outer loop." 1  "vect" } } */
  31 /* { dg-final { cleanup-tree-dump "vect" } } */