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Test all unroll variations

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Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
This commit is contained in:
Dave Rodgman
2024-02-26 18:03:29 +00:00
parent 427a5a1915
commit 08b81bf1e8
2 changed files with 41 additions and 13 deletions
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34
library/sha3.c
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@ -24,18 +24,26 @@
* saving then enables us to unroll the other loops for a net code-size saving with a net
* performance win.
*
* Depending on your compiler and target, it may be beneficial to adjust these; the defaults here
* should give sensible trade-offs for gcc and clang.
* Depending on your size/perf priorities, compiler and target, it may be beneficial to adjust
* these; the defaults here should give sensible trade-offs for gcc and clang.
*/
#undef MBEDTLS_SHA3_THETA_UNROLL //no-check-names
#define MBEDTLS_SHA3_RHO_UNROLL //no-check-names
#define MBEDTLS_SHA3_PI_UNROLL //no-check-names
#if !defined(MBEDTLS_COMPILER_IS_GCC) || defined(__OPTIMIZE_SIZE__)
#if !defined(MBEDTLS_SHA3_THETA_UNROLL)
#define MBEDTLS_SHA3_THETA_UNROLL 0 //no-check-names
#endif
#if !defined(MBEDTLS_SHA3_PI_UNROLL)
#define MBEDTLS_SHA3_PI_UNROLL 1 //no-check-names
#endif
#if !defined(MBEDTLS_SHA3_CHI_UNROLL)
#if !defined(MBEDTLS_COMPILER_IS_GCC) || defined(__OPTIMIZE_SIZE__)
/* GCC doesn't perform well with the rolled-up version, especially at -O2, so only enable on gcc
* if optimising for size. Always enable for other compilers. */
#undef MBEDTLS_SHA3_CHI_UNROLL //no-check-names
#else
#define MBEDTLS_SHA3_CHI_UNROLL //no-check-names
#define MBEDTLS_SHA3_CHI_UNROLL 0 //no-check-names
#else
#define MBEDTLS_SHA3_CHI_UNROLL 1 //no-check-names
#endif
#endif
#if !defined(MBEDTLS_SHA3_RHO_UNROLL)
#define MBEDTLS_SHA3_RHO_UNROLL 1 //no-check-names
#endif
#include "mbedtls/sha3.h"
@ -84,7 +92,7 @@ static void keccak_f1600(mbedtls_sha3_context *ctx)
uint64_t t;
/* Theta */
#if !defined(MBEDTLS_SHA3_THETA_UNROLL) //no-check-names
#if MBEDTLS_SHA3_THETA_UNROLL == 0 //no-check-names
for (i = 0; i < 5; i++) {
lane[i] = s[i] ^ s[i + 5] ^ s[i + 10] ^ s[i + 15] ^ s[i + 20];
}
@ -118,7 +126,7 @@ static void keccak_f1600(mbedtls_sha3_context *ctx)
/* Rho */
for (i = 1; i < 25; i += 4) {
uint32_t r = rho[(i - 1) >> 2];
#if !defined(MBEDTLS_SHA3_RHO_UNROLL)
#if MBEDTLS_SHA3_RHO_UNROLL == 0
for (int j = i; j < i + 4; j++) {
uint8_t r8 = (uint8_t) (r >> 24);
r <<= 8;
@ -134,7 +142,7 @@ static void keccak_f1600(mbedtls_sha3_context *ctx)
/* Pi */
t = s[1];
#if !defined(MBEDTLS_SHA3_PI_UNROLL)
#if MBEDTLS_SHA3_PI_UNROLL == 0
for (i = 0; i < 24; i += 4) {
uint32_t p = pi[i >> 2];
for (unsigned j = 0; j < 4; j++) {
@ -165,7 +173,7 @@ static void keccak_f1600(mbedtls_sha3_context *ctx)
#endif
/* Chi */
#if !defined(MBEDTLS_SHA3_CHI_UNROLL) //no-check-names
#if MBEDTLS_SHA3_CHI_UNROLL == 0 //no-check-names
for (i = 0; i <= 20; i += 5) {
lane[0] = s[i]; lane[1] = s[i + 1]; lane[2] = s[i + 2];
lane[3] = s[i + 3]; lane[4] = s[i + 4];