vect-widen-mult-half-u8.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include "tree-vect.h"
   4 #include <stdlib.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   for (i = 0; i < N; i++)
  35     {
  36       in[i] = i;
  37       __asm__ volatile ("");
  38     }
  39
  40   foo ();
  41
  42   for (i = 0; i < N; i++)
  43     if (out[i] != in[i] * COEF)
  44       abort ();
  45
  46   bar ();
  47
  48   for (i = 0; i < N; i++)
  49     if (out[i] != in[i] * COEF)
  50       abort ();
  51
  52   return 0;
  53 }
  54
  55 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 2 "vect" { target vect_widen_mult_hi_to_si } } } */
  56 /* { dg-final { scan-tree-dump-times "vect_recog_widen_mult_pattern: detected" 2 "vect" { target vect_widen_mult_hi_to_si_pattern } } } */
  57 /* { dg-final { scan-tree-dump-times "pattern recognized" 2 "vect" { target vect_widen_mult_hi_to_si_pattern } } } */
  58 /* { dg-final { cleanup-tree-dump "vect" } } */
  59