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 #pragma GCC novector
  31   for (i = 0; i < N; i++)
  32     {
  33       b = *s++;
  34       if (*d1 != b << C1 || *d2 != b << C2)
  35         abort ();
  36       d1++;
  37       d2++;
  38     }
  39 }
  40
  41 int main (void)
  42 {
  43   int i;
  44   unsigned char in[N];
  45   unsigned int out1[N];
  46   unsigned int out2[N];
  47
  48   check_vect ();
  49
  50   for (i = 0; i < N; i++)
  51     {
  52       in[i] = i;
  53       out1[i] = 255;
  54       out2[i] = 255;
  55       __asm__ volatile ("");
  56     }
  57
  58   foo (in, out1, out2);
  59
  60   return 0;
  61 }
  62
  63 /* { dg-final { scan-tree-dump-times "vect_recog_widen_shift_pattern: detected" 2 "vect" { target vect_widen_shift } } } */
  64 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */