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

   1 /* Disabling epilogues until we find a better way to deal with scans.  */
   2 /* { dg-additional-options "--param vect-epilogues-nomask=0" } */
   3 /* { dg-require-effective-target vect_int } */
   4 /* { dg-additional-options "-fno-ipa-icf" } */
   5 /* { dg-additional-options "-mlasx" { target loongarch*-*-*} } */
   6
   7 #include "tree-vect.h"
   8
   9 #define N 32
  10 #define COEF 32470
  11
  12 unsigned char in[N];
  13 int out[N];
  14
  15 __attribute__ ((noinline)) void
  16 foo ()
  17 {
  18   int i;
  19
  20   for (i = 0; i < N; i++)
  21     out[i] = in[i] * COEF;
  22 }
  23
  24 __attribute__ ((noinline)) void
  25 bar ()
  26 {
  27   int i;
  28
  29   for (i = 0; i < N; i++)
  30     out[i] = COEF * in[i];
  31 }
  32
  33 int main (void)
  34 {
  35   int i;
  36
  37   check_vect ();
  38
  39   for (i = 0; i < N; i++)
  40     {
  41       in[i] = i;
  42       __asm__ volatile ("");
  43     }
  44
  45   foo ();
  46
  47 #pragma GCC novector
  48   for (i = 0; i < N; i++)
  49     if (out[i] != in[i] * COEF)
  50       abort ();
  51
  52   bar ();
  53
  54 #pragma GCC novector
  55   for (i = 0; i < N; i++)
  56     if (out[i] != in[i] * COEF)
  57       abort ();
  58
  59   return 0;
  60 }
  61
  62 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 2 "vect" { target vect_widen_mult_hi_to_si } } } */
  63 /* { dg-final { scan-tree-dump-times "vect_recog_widen_mult_pattern: detected" 2 "vect" { target vect_widen_mult_hi_to_si_pattern } } } */
  64 /* { dg-final { scan-tree-dump-times "pattern recognized" 2 "vect" { target vect_widen_mult_hi_to_si_pattern } } } */
  65