gcc/testsuite/gcc.dg/vect/vect-widen-shift-u8.c

   1 /* { dg-require-effective-target vect_int } */
   2 /* { dg-require-effective-target vect_shift } */
   3
   4 #include <stdarg.h>
   5 #include "tree-vect.h"
   6
   7 #define N 64
   8 #define C1 10
   9 #define C2 5
  10
  11 __attribute__ ((noinline)) void
  12 foo (unsigned char *src, unsigned int *dst1, unsigned int *dst2)
  13 {
  14   int i;
  15   unsigned char b, *s = src;
  16   unsigned int *d1 = dst1, *d2 = dst2;
  17
  18   for (i = 0; i < N; i++)
  19     {
  20       b = *s++;
  21       *d1 = b << C1;
  22       d1++;
  23       *d2 = b << C2;
  24       d2++;
  25     }
  26
  27   s = src;
  28   d1 = dst1;
  29   d2 = dst2;
  30   for (i = 0; i < N; i++)
  31     {
  32       b = *s++;
  33       if (*d1 != b << C1 || *d2 != b << C2)
  34         abort ();
  35       d1++;
  36       d2++;
  37     }
  38 }
  39
  40 int main (void)
  41 {
  42   int i;
  43   unsigned char in[N];
  44   unsigned int out1[N];
  45   unsigned int out2[N];
  46
  47   check_vect ();
  48
  49   for (i = 0; i < N; i++)
  50     {
  51       in[i] = i;
  52       out1[i] = 255;
  53       out2[i] = 255;
  54       __asm__ volatile ("");
  55     }
  56
  57   foo (in, out1, out2);
  58
  59   return 0;
  60 }
  61
  62 /* { dg-final { scan-tree-dump-times "vect_recog_widen_shift_pattern: detected" 2 "vect" { target vect_widen_shift } } } */
  63 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */