gcc/testsuite/gcc.dg/vect/no-scevccp-outer-6-global.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 * __restrict__ b, int k){
  12   int i,j;
  13   int sum,x;
  14
  15   for (i = 0; i < N; i++) {
  16     sum = b[i];
  17     for (j = 0; j < N; j++) {
  18       sum += j;
  19     }
  20     a[i] = sum;
  21   }
  22
  23   return a[k];
  24 }
  25
  26 int main (void)
  27 {
  28   int i,j;
  29   int sum;
  30   int b[N];
  31   int a[N];
  32
  33   check_vect ();
  34
  35   for (i=0; i<N; i++)
  36     b[i] = i + 2;
  37
  38   for (i=0; i<N; i++)
  39     a[i] = foo (b,i);
  40
  41     /* check results:  */
  42 #pragma GCC novector
  43   for (i=0; i<N; i++)
  44     {
  45       sum = b[i];
  46       for (j = 0; j < N; j++){
  47         sum += j;
  48       }
  49       if (a[i] != sum)
  50         abort();
  51     }
  52
  53   return 0;
  54 }
  55
  56 /* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED." 1 "vect" { xfail { vect_no_align && { ! vect_hw_misalign } } } } } */