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/* Bitcoin does a lot of SHA of SHA. Benchmark that. */
#include <ccan/crypto/sha256/sha256.c>
#include <ccan/time/time.h>
#include <stdio.h>
void sha256_avx(void *input_data, uint32_t digest[8], uint64_t num_blks);
void sha256_rorx(void *input_data, uint32_t digest[8], uint64_t num_blks);
void sha256_rorx_x8ms(void *input_data, uint32_t digest[8], uint64_t num_blks);
void sha256_sse4(void *input_data, uint32_t digest[8], uint64_t num_blks);
int main(int argc, char *argv[])
{
struct timeabs start;
struct timerel diff;
size_t i, n;
union {
struct sha256 h;
uint32_t u32[16];
uint8_t u8[64];
} block;
n = atoi(argv[1] ? argv[1] : "1000000");
memset(&block, 0, sizeof(block));
sha256(&block.h, &n, sizeof(n));
start = time_now();
for (i = 0; i < n; i++) {
sha256(&block.h, &block.h, sizeof(block.h));
}
diff = time_divide(time_between(time_now(), start), n);
printf("Normal gave %02x%02x%02x%02x%02x%02x... in %llu nsec\n",
block.h.u.u8[0], block.h.u.u8[1], block.h.u.u8[2],
block.h.u.u8[3], block.h.u.u8[4], block.h.u.u8[5],
(unsigned long long)time_to_nsec(diff));
/* Now, don't re-initalize every time; use Transform */
memset(&block, 0, sizeof(block));
sha256(&block.h, &n, sizeof(n));
block.u8[sizeof(block.h)] = 0x80;
// Size is 256 bits
block.u8[sizeof(block)-2] = 1;
start = time_now();
for (i = 0; i < n; i++) {
struct sha256_ctx ctx = SHA256_INIT;
size_t j;
Transform(ctx.s, block.u32);
for (j = 0; j < sizeof(ctx.s) / sizeof(ctx.s[0]); j++)
block.h.u.u32[j] = cpu_to_be32(ctx.s[j]);
}
diff = time_divide(time_between(time_now(), start), n);
printf("Transform gave %02x%02x%02x%02x%02x%02x... in %llu nsec\n",
block.h.u.u8[0], block.h.u.u8[1], block.h.u.u8[2],
block.h.u.u8[3], block.h.u.u8[4], block.h.u.u8[5],
(unsigned long long)time_to_nsec(diff));
/* Now, assembler variants */
sha256(&block.h, &n, sizeof(n));
start = time_now();
for (i = 0; i < n; i++) {
struct sha256_ctx ctx = SHA256_INIT;
size_t j;
sha256_rorx(block.u32, ctx.s, 1);
for (j = 0; j < sizeof(ctx.s) / sizeof(ctx.s[0]); j++)
block.h.u.u32[j] = cpu_to_be32(ctx.s[j]);
}
diff = time_divide(time_between(time_now(), start), n);
printf("Asm rorx for %02x%02x%02x%02x%02x%02x... is %llu nsec\n",
block.h.u.u8[0], block.h.u.u8[1], block.h.u.u8[2],
block.h.u.u8[3], block.h.u.u8[4], block.h.u.u8[5],
(unsigned long long)time_to_nsec(diff));
sha256(&block.h, &n, sizeof(n));
start = time_now();
for (i = 0; i < n; i++) {
struct sha256_ctx ctx = SHA256_INIT;
size_t j;
sha256_sse4(block.u32, ctx.s, 1);
for (j = 0; j < sizeof(ctx.s) / sizeof(ctx.s[0]); j++)
block.h.u.u32[j] = cpu_to_be32(ctx.s[j]);
}
diff = time_divide(time_between(time_now(), start), n);
printf("Asm SSE4 for %02x%02x%02x%02x%02x%02x... is %llu nsec\n",
block.h.u.u8[0], block.h.u.u8[1], block.h.u.u8[2],
block.h.u.u8[3], block.h.u.u8[4], block.h.u.u8[5],
(unsigned long long)time_to_nsec(diff));
sha256(&block.h, &n, sizeof(n));
start = time_now();
for (i = 0; i < n; i++) {
struct sha256_ctx ctx = SHA256_INIT;
size_t j;
sha256_rorx_x8ms(block.u32, ctx.s, 1);
for (j = 0; j < sizeof(ctx.s) / sizeof(ctx.s[0]); j++)
block.h.u.u32[j] = cpu_to_be32(ctx.s[j]);
}
diff = time_divide(time_between(time_now(), start), n);
printf("Asm RORx-x8ms for %02x%02x%02x%02x%02x%02x... is %llu nsec\n",
block.h.u.u8[0], block.h.u.u8[1], block.h.u.u8[2],
block.h.u.u8[3], block.h.u.u8[4], block.h.u.u8[5],
(unsigned long long)time_to_nsec(diff));
sha256(&block.h, &n, sizeof(n));
start = time_now();
for (i = 0; i < n; i++) {
struct sha256_ctx ctx = SHA256_INIT;
size_t j;
sha256_avx(block.u32, ctx.s, 1);
for (j = 0; j < sizeof(ctx.s) / sizeof(ctx.s[0]); j++)
block.h.u.u32[j] = cpu_to_be32(ctx.s[j]);
}
diff = time_divide(time_between(time_now(), start), n);
printf("Asm AVX for %02x%02x%02x%02x%02x%02x... is %llu nsec\n",
block.h.u.u8[0], block.h.u.u8[1], block.h.u.u8[2],
block.h.u.u8[3], block.h.u.u8[4], block.h.u.u8[5],
(unsigned long long)time_to_nsec(diff));
return 0;
}
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