gcc/testsuite/gcc.dg/vect/vect-98.c

   1 /* { dg-require-effective-target vect_int } */
   2 /* { dg-additional-options "-fdump-tree-optimized-details-blocks" } */
   3
   4 #include <stdarg.h>
   5 #include "tree-vect.h"
   6
   7 #define M 8
   8 #define N 4
   9 #define DOT4( a, b )  ( a[0]*b[0] + a[1]*b[1] + a[2]*b[2] + a[3]*b[3] )
  10
  11 __attribute__ ((noinline))
  12 int main1 (int ia[][N])
  13 {
  14   int i, j;
  15   int ib[N] = {0,3,6,9};
  16   int ic[M][M];
  17
  18   for (i = 0; i < M; i++)
  19     {
  20         ic[0][i] = DOT4 (ia[i], ib);
  21     }
  22
  23   /* check results: */
  24 #pragma GCC novector
  25   for (i = 0; i < M; i++)
  26     {
  27        if (ic[0][i] != DOT4 (ia[i], ib))
  28            abort();
  29     }
  30
  31   return 0;
  32 }
  33
  34 int main (void)
  35 {
  36   int ia[M][N] = {{1,2,3,4},{2,3,5,7},{2,4,6,8},{22,43,55,77},
  37                   {13,17,19,23},{29,31,37,41},{3,7,2,1},{4,9,8,3}};
  38
  39   check_vect ();
  40
  41   return main1 (ia);
  42 }
  43
  44 /* Needs interleaving support.  */
  45 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_strided4 } } } */
  46 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 0 "vect" { xfail  vect_strided4 } } } */
  47 /* { dg-final { scan-tree-dump-not "Invalid sum" "optimized" } } */