diff options
| author | Matthew Krupcale <[email protected]> | 2020-08-23 23:15:46 -0400 |
|---|---|---|
| committer | Matthew Krupcale <[email protected]> | 2020-08-24 00:56:57 -0400 |
| commit | a9a701c6229c696817feeb32e526072689c9a256 (patch) | |
| tree | d887eac2560fba6c2fb17669314c4abf10fa8ab2 | |
| parent | 92c8047a15fe4a0e61982860d2c4854b74ed1e2c (diff) | |
SSE2 intrinsic: emulate _mm_shuffle_epi8 SSSE3 intrinsic rot8 with SSE2 intrinsics
Use a simple shift version for the 8-bit rotation.
* c/blake3_sse2.c: emulate _mm_shuffle_epi8 rot8 using SSE2 intrinsics
| -rw-r--r-- | c/blake3_sse2.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/c/blake3_sse2.c b/c/blake3_sse2.c index d0158fc..de33d62 100644 --- a/c/blake3_sse2.c +++ b/c/blake3_sse2.c @@ -36,8 +36,7 @@ INLINE __m128i rot12(__m128i x) { } INLINE __m128i rot8(__m128i x) { - return _mm_shuffle_epi8( - x, _mm_set_epi8(12, 15, 14, 13, 8, 11, 10, 9, 4, 7, 6, 5, 0, 3, 2, 1)); + return xorv(_mm_srli_epi32(x, 8), _mm_slli_epi32(x, 32 - 8)); } INLINE __m128i rot7(__m128i x) { |