gcc/testsuite/gcc.dg/vect/no-scevccp-outer-9b.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   if (n<=0)
  16     return 0;
  17
  18   for (i = 0; i < N; i++) {
  19     sum = 0;
  20     for (j = 0; j < n; j++) {
  21       sum += j;
  22     }
  23     a[i] = sum;
  24   }
  25 }
  26
  27 int main (void)
  28 {
  29   int i,j;
  30   int sum;
  31
  32   check_vect ();
  33
  34   for (i=0; i<N; i++)
  35     a[i] = i;
  36
  37   foo (N);
  38
  39     /* check results:  */
  40 #pragma GCC novector
  41   for (i=0; i<N; i++)
  42     {
  43       sum = 0;
  44       for (j = 0; j < N; j++)
  45         sum += j;
  46       if (a[i] != sum)
  47         abort();
  48     }
  49
  50   return 0;
  51 }
  52
  53 /* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED." 1 "vect" } } */