gcc/testsuite/gcc.dg/vect/no-scevccp-outer-11.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 (int n){
  12   int i,j;
  13   int sum;
  14
  15   for (i = 0; i < n; i++) {
  16     sum = 0;
  17     for (j = 0; j < N; j++) {
  18       sum += 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   for (i=0; i<N; i++)
  32     a[i] = i;
  33
  34   foo (N);
  35
  36     /* check results:  */
  37 #pragma GCC novector
  38   for (i=0; i<N; i++)
  39     {
  40       sum = 0;
  41       for (j = 0; j < N; j++)
  42         sum += j;
  43       if (a[i] != sum)
  44         abort();
  45     }
  46
  47   return 0;
  48 }
  49
  50 /* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED." 1 "vect" } } */