1 /* { dg-require-effective-target vect_int } */
2 /* { dg-require-effective-target vect_shift } */
3
4 #include <stdlib.h>
5 #include <stdarg.h>
6 #include "tree-vect.h"
7
8 #define N 512
9
10 /* Modified rgb to rgb conversion from FFmpeg. */
11 __attribute__ ((noinline)) void
foo(unsigned char * src,unsigned char * dst)12 foo (unsigned char *src, unsigned char *dst)
13 {
14 unsigned char *s = src;
15 int *d = (int *)dst;
16 int i;
17
18 for (i = 0; i < N/4; i++)
19 {
20 const int b = *s++;
21 const int g = *s++;
22 const int r = *s++;
23 const int a = *s++;
24 *d = ((b>>3) | ((g&0xFC)<<3) | ((r&0xF8)<<8) | (a>>5));
25 d++;
26 }
27
28 s = src;
29 d = (int *)dst;
30 for (i = 0; i < N/4; i++)
31 {
32 const int b = *s++;
33 const int g = *s++;
34 const int r = *s++;
35 const int a = *s++;
36 if (*d != ((b>>3) | ((g&0xFC)<<3) | ((r&0xF8)<<8) | (a>>5)))
37 abort ();
38 d++;
39 }
40 }
41
main(void)42 int main (void)
43 {
44 int i;
45 unsigned char in[N], out[N];
46
47 check_vect ();
48
49 for (i = 0; i < N; i++)
50 {
51 in[i] = i;
52 out[i] = 255;
53 __asm__ volatile ("");
54 }
55
56 foo (in, out);
57
58 return 0;
59 }
60
61 /* Final value stays in int, so no over-widening is detected at the moment. */
62 /* { dg-final { scan-tree-dump-times "vect_recog_over_widening_pattern: detected" 0 "vect" } } */
63 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
64 /* { dg-final { cleanup-tree-dump "vect" } } */
65
66