gcc/testsuite/gcc.dg/vect/no-scevccp-outer-17.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 int b[N];
  10 int c[N];
  11
  12 __attribute__ ((noinline)) int
  13 foo (){
  14   int i;
  15   unsigned short j;
  16   int sum = 0;
  17   unsigned short sum_j;
  18
  19   for (i = 0; i < N; i++) {
  20     int diff = b[i] - c[i];
  21
  22     sum_j = 0;
  23     for (j = 0; j < N; j++) {
  24       sum_j += j;
  25     }
  26     a[i] = sum_j + 5;
  27
  28     sum += diff;
  29   }
  30   return sum;
  31 }
  32
  33 int main (void)
  34 {
  35   int i;
  36   unsigned short j, sum_j;
  37   int sum = 0;
  38   int res;
  39
  40   check_vect ();
  41
  42   for (i=0; i<N; i++){
  43     b[i] = i;
  44     c[i] = 2*i;
  45   }
  46
  47   res = foo ();
  48
  49   /* check results:  */
  50   for (i=0; i<N; i++)
  51     {
  52       sum += (b[i] - c[i]);
  53
  54       sum_j = 0;
  55       for (j = 0; j < N; j++){
  56         sum_j += j;
  57       }
  58       if (a[i] != sum_j + 5)
  59         abort();
  60     }
  61   if (res != sum)
  62     abort ();
  63
  64   return 0;
  65 }
  66
  67 /* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED." 1 "vect" { xfail { ! {vect_unpack } } } } } */
  68 /* { dg-final { cleanup-tree-dump "vect" } } */