gcc/testsuite/gcc.dg/vect/no-scevccp-noreassoc-outer-3.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 40
   7
   8 int a[N];
   9
  10 __attribute__ ((noinline)) int
  11 foo (){
  12   int i,j;
  13   int sum,x;
  14
  15   for (i = 0; i < N; i++) {
  16     sum = 0;
  17     for (j = 0; j < N; j++) {
  18       sum += (i + j);
  19     }
  20     a[i] = sum;
  21   }
  22 }
  23
  24 int main (void)
  25 {
  26   int i,j;
  27   int sum;
  28
  29   check_vect ();
  30
  31   foo ();
  32
  33     /* check results:  */
  34 #pragma GCC novector
  35   for (i=0; i<N; i++)
  36     {
  37       sum = 0;
  38       for (j = 0; j < N; j++){
  39         sum += (j + i);
  40       }
  41       if (a[i] != sum)
  42         abort();
  43     }
  44
  45   return 0;
  46 }
  47
  48 /* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED." 1 "vect" } } */