gcc/testsuite/gcc.dg/vect/slp-reduc-5.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 128
   7
   8 int c[N];
   9
  10 /* Vectorization of reduction using loop-aware SLP.  */
  11
  12 __attribute__ ((noinline))
  13 int main1 (int n, int res0, int res1)
  14 {
  15   int i;
  16   int max0 = -100, max1 = -313;
  17
  18   for (i = 0; i < n; i++) {
  19     max1 = max1 < c[2*i+1] ? c[2*i+1] : max1;
  20     max0 = max0 < c[2*i] ? c[2*i] : max0;
  21   }
  22
  23   /* Check results:  */
  24   if (max0 != res0
  25       || max1 != res1)
  26     abort ();
  27
  28   return 0;
  29 }
  30
  31 int main (void)
  32 {
  33   int i;
  34
  35   check_vect ();
  36
  37   for (i = 0; i < N; i++)
  38     c[i] = (i+3) * -1;
  39
  40   c[0] = c[1] = -100;
  41   main1 (N/2, -5, -6);
  42   return 0;
  43 }
  44
  45 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 2 "vect" { xfail vect_no_int_min_max } } } */
  46 /* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 1 "vect" { xfail vect_no_int_min_max } } } */
  47