gcc/testsuite/gcc.dg/vect/vect-widen-mult-const-u16.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 (unsigned int *__restrict a,
  13      unsigned 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 (unsigned int *__restrict a,
  29      unsigned short *__restrict b,
  30      int n)
  31 {
  32   int i;
  33
  34   for (i = 0; i < n; i++)
  35     a[i] = (unsigned short) 2333 * b[i];
  36
  37 #pragma GCC novector
  38   for (i = 0; i < n; i++)
  39     if (a[i] != b[i] * (unsigned short) 2333)
  40       abort ();
  41 }
  42
  43 __attribute__ ((noinline)) void
  44 baz (unsigned int *__restrict a,
  45      unsigned short *__restrict b,
  46      int n)
  47 {
  48   int i;
  49
  50   for (i = 0; i < n; i++)
  51     a[i] = b[i] * 233333333;
  52
  53 #pragma GCC novector
  54   for (i = 0; i < n; i++)
  55     if (a[i] != b[i] * 233333333)
  56       abort ();
  57 }
  58
  59
  60 int main (void)
  61 {
  62   int i;
  63   unsigned int a[N];
  64   unsigned short b[N];
  65
  66   check_vect ();
  67
  68   for (i = 0; i < N; i++)
  69     {
  70       a[i] = 0;
  71       b[i] = i;
  72       __asm__ volatile ("");
  73     }
  74
  75   foo (a, b, N);
  76   bar (a, b, N);
  77   baz (a, b, N);
  78   return 0;
  79 }
  80
  81 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 3 "vect" { target vect_widen_mult_hi_to_si } } } */
  82 /* { dg-final { scan-tree-dump-times {vect_recog_widen_mult_pattern: detected:[^\n]* 2333} 2 "vect" { target vect_widen_mult_hi_to_si_pattern } } } */
  83 /* { dg-final { scan-tree-dump-times {widen_mult pattern recognized:[^\n]* = \(int\)} 2 "vect" { target vect_widen_mult_hi_to_si_pattern } } } */