gcc/testsuite/gcc.dg/vect/vect-reduc-pattern-3.c

   1 /* { dg-require-effective-target vect_int_mult } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 10
   7 #define RES 1024
   8
   9 /* A reduction pattern in which there is no data ref in
  10    the loop and one operand is defined outside of the loop.  */
  11
  12 __attribute__ ((noinline)) int
  13 foo (int v)
  14 {
  15   int i;
  16   int result = 1;
  17
  18   ++v;
  19   for (i = 0; i < N; i++)
  20     result *= v;
  21
  22   return result;
  23 }
  24
  25 int
  26 main (void)
  27 {
  28   int res;
  29
  30   check_vect ();
  31
  32   res = foo (1);
  33   if (res != RES)
  34     abort ();
  35
  36   return 0;
  37 }
  38
  39 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
  40