gcc/testsuite/gcc.dg/vect/vect-mult-const-pattern-2.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 256
   7
   8 __attribute__ ((noinline)) void
   9 foo (long long *arr)
  10 {
  11   for (int i = 0; i < N; i++)
  12     arr[i] *= -19594LL;
  13 }
  14
  15 int
  16 main (void)
  17 {
  18   check_vect ();
  19   long long data[N];
  20   int i;
  21
  22   for (i = 0; i < N; i++)
  23     {
  24       data[i] = i;
  25       __asm__ volatile ("");
  26     }
  27
  28   foo (data);
  29   for (i = 0; i < N; i++)
  30     {
  31       if (data[i] / -19594LL != i)
  32       __builtin_abort ();
  33       __asm__ volatile ("");
  34     }
  35
  36   return 0;
  37 }
  38
  39 /* { dg-final { scan-tree-dump-times "vect_recog_mult_pattern: detected" 2 "vect"  { target aarch64*-*-* xfail aarch64_sve } } } */
  40 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect"  { target aarch64*-*-* } } } */