gnu/dist/gcc4/gcc/testsuite/gcc.dg/vect/vect-98.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 4
   7 #define DOT4( a, b )  ( a[0]*b[0] + a[1]*b[1] + a[2]*b[2] + a[3]*b[3] )
   8
   9 int main1 (int ia[][N])
  10 {
  11   int i, j;
  12   int ib[N] = {0,3,6,9};
  13   int ic[N][N];
  14
  15   for (i = 0; i < N; i++)
  16     {
  17         ic[0][i] = DOT4 (ia[i], ib);
  18     }
  19
  20   /* check results: */
  21   for (i = 0; i < N; i++)
  22     {
  23        if (ic[0][i] != DOT4 (ia[i], ib))
  24            abort();
  25     }
  26
  27   return 0;
  28 }
  29
  30 int main (void)
  31 {
  32   int ia[N][N] = {{1,2,3,4},{2,3,5,7},{2,4,6,8},{22,43,55,77}};
  33
  34   check_vect ();
  35
  36   return main1 (ia);
  37 }
  38
  39 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { xfail *-*-* } } } */
  40 /* { dg-final { scan-tree-dump-times "not vectorized: complicated access pattern" 1 "vect" } } */
  41 /* { dg-final { cleanup-tree-dump "vect" } } */