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 #if VECTOR_BITS > 128
   8 #define N (VECTOR_BITS * 8 / 16)
   9 #else
  10 #define N 64
  11 #endif
  12
  13 /* Modified rgb to rgb conversion from FFmpeg.  */
  14 __attribute__ ((noinline)) int
  15 foo (unsigned char *src, unsigned char *dst)
  16 {
  17   unsigned char *s = src;
  18   unsigned short *d = (unsigned short *)dst, res;
  19   int i, result = 0;
  20
  21   for (i = 0; i < N/4; i++)
  22     {
  23       const int b = *s++;
  24       const int g = *s++;
  25       const int r = *s++;
  26       const int a = *s++;
  27       res = ((b>>3) | ((g&0xFC)<<3) | ((r&0xF8)<<8) | (a>>5));
  28       *d = res;
  29       result += res;
  30       d++;
  31     }
  32
  33   s = src;
  34   d = (unsigned short *)dst;
  35   for (i = 0; i < N/4; i++)
  36     {
  37       const int b = *s++;
  38       const int g = *s++;
  39       const int r = *s++;
  40       const int a = *s++;
  41       if (*d != ((b>>3) | ((g&0xFC)<<3) | ((r&0xF8)<<8) | (a>>5)))
  42         abort ();
  43       d++;
  44     }
  45
  46   return result;
  47 }
  48
  49 int main (void)
  50 {
  51   int i;
  52   unsigned char in[N], out[N];
  53
  54   check_vect ();
  55
  56   for (i = 0; i < N; i++)
  57     {
  58       in[i] = i;
  59       out[i] = 255;
  60       __asm__ volatile ("");
  61     }
  62
  63   foo (in, out);
  64
  65   return 0;
  66 }
  67
  68 /* { dg-final { scan-tree-dump-times "vect_recog_widen_shift_pattern: detected" 2 "vect" { target vect_widen_shift } } } */
  69 /* { dg-final { scan-tree-dump-times "vect_recog_over_widening_pattern: detected" 2 "vect" { target vect_widen_shift } } } */
  70 /* { dg-final { scan-tree-dump-times "vect_recog_over_widening_pattern: detected" 4 "vect" { target { { ! vect_sizes_32B_16B } && { ! vect_widen_shift } } } } } */
  71 /* { dg-final { scan-tree-dump-times "vect_recog_over_widening_pattern: detected" 8 "vect" { target vect_sizes_32B_16B } } } */
  72 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
  73