gcc/testsuite/gcc.dg/vect/vect-over-widen-4.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
   9 /* Modified rgb to rgb conversion from FFmpeg.  */
  10 __attribute__ ((noinline)) int
  11 foo (unsigned char *src, unsigned char *dst)
  12 {
  13   unsigned char *s = src;
  14   unsigned short *d = (unsigned short *)dst, res;
  15   int i, result = 0;
  16
  17   for (i = 0; i < N/4; i++)
  18     {
  19       const int b = *s++;
  20       const int g = *s++;
  21       const int r = *s++;
  22       const int a = *s++;
  23       res = ((b>>3) | ((g&0xFC)<<3) | ((r&0xF8)<<8) | (a>>5));
  24       *d = res;
  25       result += res;
  26       d++;
  27     }
  28
  29   s = src;
  30   d = (unsigned short *)dst;
  31   for (i = 0; i < N/4; i++)
  32     {
  33       const int b = *s++;
  34       const int g = *s++;
  35       const int r = *s++;
  36       const int a = *s++;
  37       if (*d != ((b>>3) | ((g&0xFC)<<3) | ((r&0xF8)<<8) | (a>>5)))
  38         abort ();
  39       d++;
  40     }
  41
  42   return result;
  43 }
  44
  45 int main (void)
  46 {
  47   int i;
  48   unsigned char in[N], out[N];
  49
  50   check_vect ();
  51
  52   for (i = 0; i < N; i++)
  53     {
  54       in[i] = i;
  55       out[i] = 255;
  56       __asm__ volatile ("");
  57     }
  58
  59   foo (in, out);
  60
  61   return 0;
  62 }
  63
  64 /* { dg-final { scan-tree-dump-times "vect_recog_widen_shift_pattern: detected" 2 "vect" { target vect_widen_shift } } } */
  65 /* { dg-final { scan-tree-dump-times "vect_recog_over_widening_pattern: detected" 2 "vect" { target vect_widen_shift } } } */
  66 /* { dg-final { scan-tree-dump-times "vect_recog_over_widening_pattern: detected" 4 "vect" { target { { ! vect_sizes_32B_16B } && { ! vect_widen_shift } } } } } */
  67 /* { dg-final { scan-tree-dump-times "vect_recog_over_widening_pattern: detected" 8 "vect" { target vect_sizes_32B_16B } } } */
  68 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
  69