1b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar#include "timing.h" 2b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar#include <stdio.h> 3b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar 4b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar#define INPUT_TYPE int 5b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar#define INPUT_SIZE 512 6b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar#define FUNCTION_NAME __ashrdi3 7b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar 8b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar#ifndef LIBNAME 9b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar#define LIBNAME UNKNOWN 10b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar#endif 11b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar 12b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar#define LIBSTRING LIBSTRINGX(LIBNAME) 13b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar#define LIBSTRINGX(a) LIBSTRINGXX(a) 14b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar#define LIBSTRINGXX(a) #a 15b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar 16b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbarint64_t FUNCTION_NAME(int64_t input, INPUT_TYPE count); 17b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar 18b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbarint main(int argc, char *argv[]) { 19b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar INPUT_TYPE input[INPUT_SIZE]; 20b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar int i, j; 21b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar 22b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar srand(42); 23b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar 24b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar // Initialize the input array with data of various sizes. 25b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar for (i=0; i<INPUT_SIZE; ++i) 26b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar input[i] = rand() & 0x3f; 27b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar 28b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar int64_t fixedInput = INT64_C(0x1234567890ABCDEF); 29b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar 30b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar double bestTime = __builtin_inf(); 31b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar void *dummyp; 32b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar for (j=0; j<1024; ++j) { 33b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar 34b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar uint64_t startTime = mach_absolute_time(); 35b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar for (i=0; i<INPUT_SIZE; ++i) 36b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar FUNCTION_NAME(fixedInput, input[i]); 37b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar uint64_t endTime = mach_absolute_time(); 38b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar 39b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar double thisTime = intervalInCycles(startTime, endTime); 40b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar bestTime = __builtin_fmin(thisTime, bestTime); 41b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar 42b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar // Move the stack alignment between trials to eliminate (mostly) aliasing effects 43b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar dummyp = alloca(1); 44b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar } 45b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar 46b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar printf("%16s: %f cycles.\n", LIBSTRING, bestTime / (double) INPUT_SIZE); 47b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar 48b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar return 0; 49b3a6901e66f55b35aa9e01bcb24134e6a65ea004Daniel Dunbar} 50