1#include "timing.h"
2#include <stdio.h>
3
4#define INPUT_TYPE int
5#define INPUT_SIZE 512
6#define FUNCTION_NAME __ashrdi3
7
8#ifndef LIBNAME
9#define LIBNAME UNKNOWN
10#endif
11
12#define LIBSTRING		LIBSTRINGX(LIBNAME)
13#define LIBSTRINGX(a)	LIBSTRINGXX(a)
14#define LIBSTRINGXX(a)	#a
15
16int64_t FUNCTION_NAME(int64_t input, INPUT_TYPE count);
17
18int main(int argc, char *argv[]) {
19	INPUT_TYPE input[INPUT_SIZE];
20	int i, j;
21
22	srand(42);
23
24	// Initialize the input array with data of various sizes.
25	for (i=0; i<INPUT_SIZE; ++i)
26		input[i] = rand() & 0x3f;
27
28	int64_t fixedInput = INT64_C(0x1234567890ABCDEF);
29
30	double bestTime = __builtin_inf();
31	void *dummyp;
32	for (j=0; j<1024; ++j) {
33
34		uint64_t startTime = mach_absolute_time();
35		for (i=0; i<INPUT_SIZE; ++i)
36			FUNCTION_NAME(fixedInput, input[i]);
37		uint64_t endTime = mach_absolute_time();
38
39		double thisTime = intervalInCycles(startTime, endTime);
40		bestTime = __builtin_fmin(thisTime, bestTime);
41
42		// Move the stack alignment between trials to eliminate (mostly) aliasing effects
43		dummyp = alloca(1);
44	}
45
46	printf("%16s: %f cycles.\n", LIBSTRING, bestTime / (double) INPUT_SIZE);
47
48	return 0;
49}
50