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Always use STORE32_LE for unaligned stores, even when it's a noop

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Frank Denis
2026-07-12 14:36:25 +02:00
parent 931db45728
commit f5c49665fa
1 changed files with 14 additions and 14 deletions
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src/libsodium/crypto_stream/salsa20/xmm6int/u0.h
+14 -14
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@@ -161,20 +161,20 @@ if (bytes > 0) {
diag2 = _mm_add_epi32(diag2, _mm_loadu_si128((const __m128i *) (x + 8)));
diag3 = _mm_add_epi32(diag3, _mm_loadu_si128((const __m128i *) (x + 12)));
#define ONEQUAD_SHUFFLE(A, B, C, D) \
do { \
uint32_t in##A = _mm_cvtsi128_si32(diag0); \
uint32_t in##B = _mm_cvtsi128_si32(diag1); \
uint32_t in##C = _mm_cvtsi128_si32(diag2); \
uint32_t in##D = _mm_cvtsi128_si32(diag3); \
diag0 = _mm_shuffle_epi32(diag0, 0x39); \
diag1 = _mm_shuffle_epi32(diag1, 0x39); \
diag2 = _mm_shuffle_epi32(diag2, 0x39); \
diag3 = _mm_shuffle_epi32(diag3, 0x39); \
*(uint32_t *) (partialblock + (A * 4)) = in##A; \
*(uint32_t *) (partialblock + (B * 4)) = in##B; \
*(uint32_t *) (partialblock + (C * 4)) = in##C; \
*(uint32_t *) (partialblock + (D * 4)) = in##D; \
#define ONEQUAD_SHUFFLE(A, B, C, D) \
do { \
uint32_t in##A = _mm_cvtsi128_si32(diag0); \
uint32_t in##B = _mm_cvtsi128_si32(diag1); \
uint32_t in##C = _mm_cvtsi128_si32(diag2); \
uint32_t in##D = _mm_cvtsi128_si32(diag3); \
diag0 = _mm_shuffle_epi32(diag0, 0x39); \
diag1 = _mm_shuffle_epi32(diag1, 0x39); \
diag2 = _mm_shuffle_epi32(diag2, 0x39); \
diag3 = _mm_shuffle_epi32(diag3, 0x39); \
STORE32_LE(partialblock + (A * 4), in##A); \
STORE32_LE(partialblock + (B * 4), in##B); \
STORE32_LE(partialblock + (C * 4), in##C); \
STORE32_LE(partialblock + (D * 4), in##D); \
} while (0)
#define ONEQUAD(A, B, C, D) ONEQUAD_SHUFFLE(A, B, C, D)