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Manually align arrays on the stack

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as a workaround to issues with overaligned alignas() on stack variables in gcc < 9.3 on windows.

closes https://github.com/official-stockfish/Stockfish/pull/3217

fixes #3216

No functional change
This commit is contained in:
Tomasz Sobczyk
2020-11-03 11:23:35 +01:00
committed by Joost VandeVondele
parent a260c9a8a2
commit 3f6451eff7
8 changed files with 64 additions and 38 deletions
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src/nnue/layers/clipped_relu.h
+5 -5
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@@ -74,12 +74,12 @@ namespace Eval::NNUE::Layers {
const auto out = reinterpret_cast<__m256i*>(output);
for (IndexType i = 0; i < kNumChunks; ++i) {
const __m256i words0 = _mm256_srai_epi16(_mm256_packs_epi32(
_mm256_loadA_si256(&in[i * 4 + 0]),
_mm256_loadA_si256(&in[i * 4 + 1])), kWeightScaleBits);
_mm256_load_si256(&in[i * 4 + 0]),
_mm256_load_si256(&in[i * 4 + 1])), kWeightScaleBits);
const __m256i words1 = _mm256_srai_epi16(_mm256_packs_epi32(
_mm256_loadA_si256(&in[i * 4 + 2]),
_mm256_loadA_si256(&in[i * 4 + 3])), kWeightScaleBits);
_mm256_storeA_si256(&out[i], _mm256_permutevar8x32_epi32(_mm256_max_epi8(
_mm256_load_si256(&in[i * 4 + 2]),
_mm256_load_si256(&in[i * 4 + 3])), kWeightScaleBits);
_mm256_store_si256(&out[i], _mm256_permutevar8x32_epi32(_mm256_max_epi8(
_mm256_packs_epi16(words0, words1), kZero), kOffsets));
}
constexpr IndexType kStart = kNumChunks * kSimdWidth;