gcc/testsuite/gcc.dg/vect/vect-widen-mult-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 "-mlasx" { target loongarch*-*-*} } */
   5
   6 #include <stdarg.h>
   7 #include "tree-vect.h"
   8
   9 #define N 64
  10
  11 unsigned short X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
  12 unsigned short Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
  13 unsigned int result[N];
  14
  15 /* unsigned short->unsigned int widening-mult.  */
  16 __attribute__ ((noinline)) int
  17 foo1(int len) {
  18   int i;
  19
  20   for (i=0; i<len; i++) {
  21     result[i] = (unsigned int)(X[i] * Y[i]);
  22   }
  23 }
  24
  25 int main (void)
  26 {
  27   int i;
  28
  29   check_vect ();
  30
  31   for (i=0; i<N; i++) {
  32     X[i] = i;
  33     Y[i] = 64-i;
  34     __asm__ volatile ("");
  35   }
  36
  37   foo1 (N);
  38
  39 #pragma GCC novector
  40   for (i=0; i<N; i++) {
  41     if (result[i] != X[i] * Y[i])
  42       abort ();
  43   }
  44
  45   return 0;
  46 }
  47
  48 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target { vect_widen_mult_hi_to_si || vect_unpack } } } } */
  49 /* { dg-final { scan-tree-dump-times "vect_recog_widen_mult_pattern: detected" 1 "vect" { target vect_widen_mult_hi_to_si_pattern } } } */
  50 /* { dg-final { scan-tree-dump-times "pattern recognized" 1 "vect" { target vect_widen_mult_hi_to_si_pattern } } } */
  51