gcc/testsuite/gcc.dg/vect/vect-widen-mult-const-s16.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
  11 __attribute__ ((noinline)) void
  12 foo (int *__restrict a,
  13      short *__restrict b,
  14      int n)
  15 {
  16   int i;
  17
  18   for (i = 0; i < n; i++)
  19     a[i] = b[i] * 2333;
  20
  21 #pragma GCC novector
  22   for (i = 0; i < n; i++)
  23     if (a[i] != b[i] * 2333)
  24       abort ();
  25 }
  26
  27 __attribute__ ((noinline)) void
  28 bar (int *__restrict a,
  29      short *__restrict b,
  30      int n)
  31 {
  32   int i;
  33
  34   for (i = 0; i < n; i++)
  35     a[i] = b[i] * (short) 2333;
  36
  37 #pragma GCC novector
  38   for (i = 0; i < n; i++)
  39     if (a[i] != b[i] * (short) 2333)
  40       abort ();
  41 }
  42
  43 int main (void)
  44 {
  45   int i;
  46   int a[N];
  47   short b[N];
  48
  49   check_vect ();
  50
  51   for (i = 0; i < N; i++)
  52     {
  53       a[i] = 0;
  54       b[i] = i;
  55       __asm__ volatile ("");
  56     }
  57
  58   foo (a, b, N);
  59   bar (a, b, N);
  60   return 0;
  61 }
  62
  63 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 2 "vect" { target vect_widen_mult_hi_to_si } } } */
  64 /* { dg-final { scan-tree-dump-times {vect_recog_widen_mult_pattern: detected:[^\n]* 2333} 2 "vect" { target vect_widen_mult_hi_to_si_pattern } } } */
  65 /* { dg-final { scan-tree-dump-times {widen_mult pattern recognized:[^\n]* 2333} 2 "vect" { target vect_widen_mult_hi_to_si_pattern } } } */
  66