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