gcc/testsuite/gcc.dg/vect/no-scevccp-noreassoc-outer-4.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 __attribute__ ((noinline)) int
   9 foo (){
  10   int i,j;
  11   int sum,s=0;
  12
  13   for (i = 0; i < 200*N; i++) {
  14     sum = 0;
  15     for (j = 0; j < N; j++) {
  16       sum += (i + j);
  17       i++;
  18     }
  19     s += sum;
  20   }
  21   return s;
  22 }
  23
  24 __attribute__ ((noinline))
  25 int bar (int i, int j)
  26 {
  27 return (i + j);
  28 }
  29
  30 int main (void)
  31 {
  32   int i,j,k=0;
  33   int sum,s=0;
  34   int res;
  35
  36   check_vect ();
  37
  38   res = foo ();
  39
  40     /* check results:  */
  41   for (i=0; i<200*N; i++)
  42     {
  43       sum = 0;
  44       for (j = 0; j < N; j++){
  45         sum += bar (i, j);
  46         i++;
  47       }
  48       s += sum;
  49     }
  50   if (res != s)
  51     abort ();
  52
  53   return 0;
  54 }
  55
  56 /* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED." 1 "vect" } } */