gcc/testsuite/gcc.dg/vect/no-scevccp-outer-19.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 64
   7
   8 unsigned short a[N];
   9 unsigned int b[N];
  10
  11 __attribute__ ((noinline)) int
  12 foo (){
  13   unsigned short i,j;
  14   unsigned short sum;
  15
  16   for (i = 0; i < N; i++) {
  17     sum = 0;
  18     for (j = 0; j < N; j++) {
  19       sum += j;
  20     }
  21     a[i] = sum;
  22     b[i] = (unsigned int)sum;
  23   }
  24 }
  25
  26 int main (void)
  27 {
  28   int i,j;
  29   short sum;
  30
  31   check_vect ();
  32
  33   for (i=0; i<N; i++)
  34     a[i] = i;
  35
  36   foo ();
  37
  38     /* check results:  */
  39   for (i=0; i<N; i++)
  40     {
  41       sum = 0;
  42       for (j = 0; j < N; j++)
  43         sum += j;
  44       if (a[i] != sum  || b[i] != (unsigned int)sum)
  45         abort();
  46     }
  47
  48   return 0;
  49 }
  50
  51 /* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED." 1 "vect" { xfail { ! {vect_unpack } } } } } */
  52 /* { dg-final { cleanup-tree-dump "vect" } } */