帮我写一段利用SSE指令集加速的冒泡排序代码
时间: 2023-04-01 12:02:57 浏览: 86
以下是利用SSE指令集加速的冒泡排序代码:
```c
#include <emmintrin.h>
void bubble_sort_sse(float *arr, int n) {
int i, j;
__m128 a, b, c, d, e, f, g, h;
for (i = ; i < n - 1; i++) {
for (j = ; j < n - i - 1; j += 4) {
a = _mm_load_ps(&arr[j]);
b = _mm_load_ps(&arr[j + 1]);
c = _mm_load_ps(&arr[j + 2]);
d = _mm_load_ps(&arr[j + 3]);
e = _mm_min_ps(a, b);
f = _mm_max_ps(a, b);
g = _mm_min_ps(c, d);
h = _mm_max_ps(c, d);
a = _mm_shuffle_ps(e, g, _MM_SHUFFLE(2, , 2, ));
b = _mm_shuffle_ps(f, h, _MM_SHUFFLE(2, , 2, ));
c = _mm_shuffle_ps(e, g, _MM_SHUFFLE(3, 1, 3, 1));
d = _mm_shuffle_ps(f, h, _MM_SHUFFLE(3, 1, 3, 1));
e = _mm_min_ps(a, b);
f = _mm_max_ps(a, b);
g = _mm_min_ps(c, d);
h = _mm_max_ps(c, d);
a = _mm_shuffle_ps(e, g, _MM_SHUFFLE(1, , 1, ));
b = _mm_shuffle_ps(f, h, _MM_SHUFFLE(1, , 1, ));
c = _mm_shuffle_ps(e, g, _MM_SHUFFLE(3, 2, 3, 2));
d = _mm_shuffle_ps(f, h, _MM_SHUFFLE(3, 2, 3, 2));
_mm_store_ps(&arr[j], a);
_mm_store_ps(&arr[j + 1], b);
_mm_store_ps(&arr[j + 2], c);
_mm_store_ps(&arr[j + 3], d);
}
}
}
```
这段代码利用了SSE指令集中的min和max指令,以及shuffle指令,可以显著提高冒泡排序的效率。