From 388cd85e51aa9c73f8e7f35f0d06c258be7b579c Mon Sep 17 00:00:00 2001 From: Lars Viklund Date: Wed, 1 Nov 2017 13:23:09 +0100 Subject: Remove nested comments in blake2 (#4173) Replace occurence of nested comments in blake2 reference implementation with preprocessor directive for disabling unused code. `blake2s-load-xop.h` is conditionally pulled in only on chips with XOP support, among others the AMD Bulldozer. The malformed comments in the source file breaks the build of `hashlib`'s `_blake2` on GCC 6.3.0. Official reference code on github uses `#if` so this change should be uncontroversial. --- Modules/_blake2/impl/blake2s-load-xop.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/Modules/_blake2/impl/blake2s-load-xop.h b/Modules/_blake2/impl/blake2s-load-xop.h index a3b5d65..2797722 100644 --- a/Modules/_blake2/impl/blake2s-load-xop.h +++ b/Modules/_blake2/impl/blake2s-load-xop.h @@ -18,8 +18,9 @@ #define TOB(x) ((x)*4*0x01010101 + 0x03020100) /* ..or not TOB */ +#if 0 /* Basic VPPERM emulation, for testing purposes */ -/*static __m128i _mm_perm_epi8(const __m128i src1, const __m128i src2, const __m128i sel) +static __m128i _mm_perm_epi8(const __m128i src1, const __m128i src2, const __m128i sel) { const __m128i sixteen = _mm_set1_epi8(16); const __m128i t0 = _mm_shuffle_epi8(src1, sel); @@ -27,7 +28,8 @@ const __m128i mask = _mm_or_si128(_mm_cmpeq_epi8(sel, sixteen), _mm_cmpgt_epi8(sel, sixteen)); /* (>=16) = 0xff : 00 */ return _mm_blendv_epi8(t0, s1, mask); -}*/ +} +#endif #define LOAD_MSG_0_1(buf) \ buf = _mm_perm_epi8(m0, m1, _mm_set_epi32(TOB(6),TOB(4),TOB(2),TOB(0)) ); -- cgit v0.12