| /* { dg-do run } */ |
| /* { dg-options "-O3 -save-temps" } */ |
| #include <stdint.h> |
| #include <string.h> |
| |
| #pragma GCC target "+nosve" |
| |
| #define ARR_SIZE 1024 |
| |
| /* Should produce an shll,shll2 pair*/ |
| void sshll_opt (int32_t *foo, int16_t *a, int16_t *b) |
| { |
| for( int i = 0; i < ARR_SIZE - 3;i=i+4) |
| { |
| foo[i] = a[i] << 16; |
| foo[i+1] = a[i+1] << 16; |
| foo[i+2] = a[i+2] << 16; |
| foo[i+3] = a[i+3] << 16; |
| } |
| } |
| |
| __attribute__((optimize (0))) |
| void sshll_nonopt (int32_t *foo, int16_t *a, int16_t *b) |
| { |
| for( int i = 0; i < ARR_SIZE - 3;i=i+4) |
| { |
| foo[i] = a[i] << 16; |
| foo[i+1] = a[i+1] << 16; |
| foo[i+2] = a[i+2] << 16; |
| foo[i+3] = a[i+3] << 16; |
| } |
| } |
| |
| |
| void __attribute__((optimize (0))) |
| init(uint16_t *a, uint16_t *b) |
| { |
| for( int i = 0; i < ARR_SIZE;i++) |
| { |
| a[i] = i; |
| b[i] = 2*i; |
| } |
| } |
| |
| int __attribute__((optimize (0))) |
| main() |
| { |
| uint32_t foo_arr[ARR_SIZE]; |
| uint32_t bar_arr[ARR_SIZE]; |
| uint16_t a[ARR_SIZE]; |
| uint16_t b[ARR_SIZE]; |
| |
| init(a, b); |
| sshll_opt(foo_arr, a, b); |
| sshll_nonopt(bar_arr, a, b); |
| if (memcmp(foo_arr, bar_arr, ARR_SIZE) != 0) |
| return 1; |
| return 0; |
| } |
| |
| /* { dg-final { scan-assembler-times {\tshll\t} 1} } */ |
| /* { dg-final { scan-assembler-times {\tshll2\t} 1} } */ |