1 /* { dg-do run } */
2 /* { dg-options "-O3 -save-temps" } */
3 #include <stdint.h>
4 #include <string.h>
5
6 #pragma GCC target "+nosve"
7
8 #define ARR_SIZE 1024
9
10 /* Should produce an shll,shll2 pair*/
sshll_opt(int32_t * foo,int16_t * a,int16_t * b)11 void sshll_opt (int32_t *foo, int16_t *a, int16_t *b)
12 {
13 for( int i = 0; i < ARR_SIZE - 3;i=i+4)
14 {
15 foo[i] = a[i] << 16;
16 foo[i+1] = a[i+1] << 16;
17 foo[i+2] = a[i+2] << 16;
18 foo[i+3] = a[i+3] << 16;
19 }
20 }
21
22 __attribute__((optimize (0)))
sshll_nonopt(int32_t * foo,int16_t * a,int16_t * b)23 void sshll_nonopt (int32_t *foo, int16_t *a, int16_t *b)
24 {
25 for( int i = 0; i < ARR_SIZE - 3;i=i+4)
26 {
27 foo[i] = a[i] << 16;
28 foo[i+1] = a[i+1] << 16;
29 foo[i+2] = a[i+2] << 16;
30 foo[i+3] = a[i+3] << 16;
31 }
32 }
33
34
35 void __attribute__((optimize (0)))
init(uint16_t * a,uint16_t * b)36 init(uint16_t *a, uint16_t *b)
37 {
38 for( int i = 0; i < ARR_SIZE;i++)
39 {
40 a[i] = i;
41 b[i] = 2*i;
42 }
43 }
44
45 int __attribute__((optimize (0)))
main()46 main()
47 {
48 uint32_t foo_arr[ARR_SIZE];
49 uint32_t bar_arr[ARR_SIZE];
50 uint16_t a[ARR_SIZE];
51 uint16_t b[ARR_SIZE];
52
53 init(a, b);
54 sshll_opt(foo_arr, a, b);
55 sshll_nonopt(bar_arr, a, b);
56 if (memcmp(foo_arr, bar_arr, ARR_SIZE) != 0)
57 return 1;
58 return 0;
59 }
60
61 /* { dg-final { scan-assembler-times {\tshll\t} 1} } */
62 /* { dg-final { scan-assembler-times {\tshll2\t} 1} } */
63