gcc/testsuite/gcc.dg/vect/vect-widen-mult-half-u8.c

   1 /* { dg-require-effective-target vect_int } */
   2 /* { dg-additional-options "-fno-ipa-icf" } */
   3
   4 #include "tree-vect.h"
   5
   6 #define N 32
   7 #define COEF 32470
   8
   9 unsigned char in[N];
  10 int out[N];
  11
  12 __attribute__ ((noinline)) void
  13 foo ()
  14 {
  15   int i;
  16
  17   for (i = 0; i < N; i++)
  18     out[i] = in[i] * COEF;
  19 }
  20
  21 __attribute__ ((noinline)) void
  22 bar ()
  23 {
  24   int i;
  25
  26   for (i = 0; i < N; i++)
  27     out[i] = COEF * in[i];
  28 }
  29
  30 int main (void)
  31 {
  32   int i;
  33
  34   check_vect ();
  35
  36   for (i = 0; i < N; i++)
  37     {
  38       in[i] = i;
  39       __asm__ volatile ("");
  40     }
  41
  42   foo ();
  43
  44   for (i = 0; i < N; i++)
  45     if (out[i] != in[i] * COEF)
  46       abort ();
  47
  48   bar ();
  49
  50   for (i = 0; i < N; i++)
  51     if (out[i] != in[i] * COEF)
  52       abort ();
  53
  54   return 0;
  55 }
  56
  57 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 2 "vect" { target vect_widen_mult_hi_to_si } } } */
  58 /* { dg-final { scan-tree-dump-times "vect_recog_widen_mult_pattern: detected" 2 "vect" { target vect_widen_mult_hi_to_si_pattern } } } */
  59 /* { dg-final { scan-tree-dump-times "pattern recognized" 2 "vect" { target vect_widen_mult_hi_to_si_pattern } } } */
  60