gcc/testsuite/gcc.dg/vect/slp-widen-mult-half.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 "-mlasx" { target loongarch*-*-* } } */
   5
   6 #include "tree-vect.h"
   7
   8 #define N 32
   9 #define COEF 32470
  10 #define COEF2 324700
  11
  12 unsigned char in[N];
  13 int out[N];
  14 int out2[N];
  15
  16 __attribute__ ((noinline)) void
  17 foo ()
  18 {
  19   int i;
  20
  21   for (i = 0; i < N/2; i++)
  22     {
  23       out[2*i] = in[2*i] * COEF;
  24       out2[2*i] = in[2*i] + COEF2;
  25       out[2*i+1] = in[2*i+1] * COEF;
  26       out2[2*i+1] = in[2*i+1] + COEF2;
  27     }
  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 #pragma GCC novector
  45   for (i = 0; i < N; i++)
  46     if (out[i] != in[i] * COEF || out2[i] != in[i] + COEF2)
  47       abort ();
  48
  49   return 0;
  50 }
  51
  52 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_widen_mult_hi_to_si } } } */
  53 /* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 2 "vect" { target vect_widen_mult_hi_to_si } } } */
  54 /* { dg-final { scan-tree-dump-times "vect_recog_widen_mult_pattern: detected" 2 "vect" { target vect_widen_mult_hi_to_si_pattern } } } */
  55 /* { dg-final { scan-tree-dump-times "pattern recognized" 2 "vect" { target vect_widen_mult_hi_to_si_pattern } } } */
  56