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Implemented AVX2 version of dump.
[SVN r84204]
This commit is contained in:
Andrey Semashev
@@ -40,59 +40,112 @@ BOOST_LOG_ANONYMOUS_NAMESPACE {
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enum
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{
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packs_per_stride = 32,
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stride = packs_per_stride * 16
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stride = packs_per_stride * 32
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};
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union xmm_constant
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union ymm_constant
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{
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uint8_t as_bytes[16];
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__m128i as_mm;
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uint8_t as_bytes[32];
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__m256i as_mm;
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};
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static const xmm_constant mm_15 = {{ 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F }};
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static const xmm_constant mm_9 = {{ 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9 }};
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static const xmm_constant mm_char_0 = {{ '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0' }};
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static const xmm_constant mm_char_space_mask = {{ ' ', 0, 0, ' ', 0, 0, ' ', 0, 0, ' ', 0, 0, ' ', 0, 0, ' ' }};
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static const xmm_constant mm_shuffle_pattern1 = {{ 0x80, 0, 1, 0x80, 2, 3, 0x80, 4, 5, 0x80, 6, 7, 0x80, 8, 9, 0x80 }};
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static const xmm_constant mm_shuffle_pattern2 = {{ 0, 1, 0x80, 2, 3, 0x80, 4, 5, 0x80, 6, 7, 0x80, 8, 9, 0x80, 10 }};
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static const xmm_constant mm_shuffle_pattern3 = {{ 5, 0x80, 6, 7, 0x80, 8, 9, 0x80, 10, 11, 0x80, 12, 13, 0x80, 14, 15 }};
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static const ymm_constant mm_char_space_mask = {{ ' ', 0, 0, ' ', 0, 0, ' ', 0, 0, ' ', 0, 0, ' ', 0, 0, ' ', ' ', 0, 0, ' ', 0, 0, ' ', 0, 0, ' ', 0, 0, ' ', 0, 0, ' ' }};
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static const ymm_constant mm_shuffle_pattern1 = {{ 0x80, 0, 1, 0x80, 2, 3, 0x80, 4, 5, 0x80, 6, 7, 0x80, 8, 9, 0x80, 0x80, 0, 1, 0x80, 2, 3, 0x80, 4, 5, 0x80, 6, 7, 0x80, 8, 9, 0x80 }};
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static const ymm_constant mm_shuffle_pattern2 = {{ 0, 1, 0x80, 2, 3, 0x80, 4, 5, 0x80, 6, 7, 0x80, 8, 9, 0x80, 10, 0, 1, 0x80, 2, 3, 0x80, 4, 5, 0x80, 6, 7, 0x80, 8, 9, 0x80, 10 }};
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static const ymm_constant mm_shuffle_pattern3 = {{ 5, 0x80, 6, 7, 0x80, 8, 9, 0x80, 10, 11, 0x80, 12, 13, 0x80, 14, 15, 5, 0x80, 6, 7, 0x80, 8, 9, 0x80, 10, 11, 0x80, 12, 13, 0x80, 14, 15 }};
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static const ymm_constant mm_shuffle_pattern13 = {{ 0x80, 0, 1, 0x80, 2, 3, 0x80, 4, 5, 0x80, 6, 7, 0x80, 8, 9, 0x80, 5, 0x80, 6, 7, 0x80, 8, 9, 0x80, 10, 11, 0x80, 12, 13, 0x80, 14, 15 }};
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//! Dumps a pack of input data into a string of 8 bit ASCII characters
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static BOOST_LOG_FORCEINLINE void dump_pack(__m128i mm_char_10_to_a, __m128i mm_input, __m128i& mm_output1, __m128i& mm_output2, __m128i& mm_output3)
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static BOOST_LOG_FORCEINLINE void dump_pack(__m256i mm_char_a, __m256i mm_input, __m256i& mm_output1, __m256i& mm_output2, __m256i& mm_output3)
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{
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// Split half-bytes
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__m128i mm_input_hi = _mm_and_si128(_mm_srli_epi16(mm_input, 4), mm_15.as_mm);
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__m128i mm_input_lo = _mm_and_si128(mm_input, mm_15.as_mm);
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const __m256i mm_15 = _mm256_set1_epi8(0x0F);
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__m256i mm_input_hi = _mm256_and_si256(_mm256_srli_epi16(mm_input, 4), mm_15);
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__m256i mm_input_lo = _mm256_and_si256(mm_input, mm_15);
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// Stringize each of the halves
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__m128i mm_addend_hi = _mm_cmpgt_epi8(mm_input_hi, mm_9.as_mm);
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__m128i mm_addend_lo = _mm_cmpgt_epi8(mm_input_lo, mm_9.as_mm);
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mm_addend_hi = _mm_and_si128(mm_char_10_to_a, mm_addend_hi);
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mm_addend_lo = _mm_and_si128(mm_char_10_to_a, mm_addend_lo);
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const __m256i mm_9 = _mm256_set1_epi8(9);
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__m256i mm_addend_hi = _mm256_cmpgt_epi8(mm_input_hi, mm_9);
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__m256i mm_addend_lo = _mm256_cmpgt_epi8(mm_input_lo, mm_9);
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const __m256i mm_char_0 = _mm256_set1_epi8('0');
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mm_addend_hi = _mm256_blendv_epi8(mm_char_0, mm_char_a, mm_addend_hi);
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mm_addend_lo = _mm256_blendv_epi8(mm_char_0, mm_char_a, mm_addend_lo);
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mm_input_hi = _mm_add_epi8(mm_input_hi, mm_char_0.as_mm);
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mm_input_lo = _mm_add_epi8(mm_input_lo, mm_char_0.as_mm);
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mm_input_hi = _mm_add_epi8(mm_input_hi, mm_addend_hi);
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mm_input_lo = _mm_add_epi8(mm_input_lo, mm_addend_lo);
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mm_input_hi = _mm256_add_epi8(mm_input_hi, mm_addend_hi);
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mm_input_lo = _mm256_add_epi8(mm_input_lo, mm_addend_lo);
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// Join them back together
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__m128i mm_1 = _mm_unpacklo_epi8(mm_input_hi, mm_input_lo);
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__m128i mm_2 = _mm_unpackhi_epi8(mm_input_hi, mm_input_lo);
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__m256i mm_1 = _mm256_unpacklo_epi8(mm_input_hi, mm_input_lo);
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__m256i mm_2 = _mm256_unpackhi_epi8(mm_input_hi, mm_input_lo);
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// Insert spaces between stringized bytes:
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// |0123456789abcdef|0123456789abcdef|
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// | 01 23 45 67 89 |ab cd ef 01 23 4|5 67 89 ab cd ef|
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mm_output1 = _mm_shuffle_epi8(mm_1, mm_shuffle_pattern1.as_mm);
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mm_output2 = _mm_shuffle_epi8(_mm_alignr_epi8(mm_2, mm_1, 10), mm_shuffle_pattern2.as_mm);
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mm_output3 = _mm_shuffle_epi8(mm_2, mm_shuffle_pattern3.as_mm);
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__m256i mm_out1 = _mm256_shuffle_epi8(mm_1, mm_shuffle_pattern1.as_mm);
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__m256i mm_out2 = _mm256_shuffle_epi8(_mm256_alignr_epi8(mm_2, mm_1, 10), mm_shuffle_pattern2.as_mm);
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__m256i mm_out3 = _mm256_shuffle_epi8(mm_2, mm_shuffle_pattern3.as_mm);
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__m128i mm_char_space = mm_char_space_mask.as_mm;
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mm_output1 = _mm_or_si128(mm_output1, mm_char_space);
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__m256i mm_char_space = mm_char_space_mask.as_mm;
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mm_out1 = _mm256_or_si256(mm_out1, mm_char_space);
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mm_char_space = _mm256_srli_si256(mm_char_space, 1);
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mm_out2 = _mm256_or_si256(mm_out2, mm_char_space);
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mm_char_space = _mm256_srli_si256(mm_char_space, 1);
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mm_out3 = _mm256_or_si256(mm_out3, mm_char_space);
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mm_output1 = _mm256_permute2x128_si256(mm_out1, mm_out2, 2u << 4 | 0u);
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mm_output2 = _mm256_permute2x128_si256(mm_out3, mm_out1, 3u << 4 | 0u);
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mm_output3 = _mm256_permute2x128_si256(mm_out2, mm_out3, 3u << 4 | 1u);
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}
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//! Dumps a pack of input data into a string of 8 bit ASCII characters
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static BOOST_LOG_FORCEINLINE void dump_pack(__m256i mm_char_a, __m128i mm_input, __m128i& mm_output1, __m128i& mm_output2, __m128i& mm_output3)
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{
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// Split half-bytes
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__m128i mm_input_hi = _mm_srli_epi16(mm_input, 4);
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__m256i mm = _mm256_insertf128_si256(_mm256_castsi128_si256(_mm_unpacklo_epi8(mm_input_hi, mm_input)), _mm_unpackhi_epi8(mm_input_hi, mm_input), 1);
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mm = _mm256_and_si256(mm, _mm256_set1_epi8(0x0F));
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// Stringize the halves
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__m256i mm_addend = _mm256_cmpgt_epi8(mm, _mm256_set1_epi8(9));
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mm_addend = _mm256_blendv_epi8(_mm256_set1_epi8('0'), mm_char_a, mm_addend);
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mm = _mm256_add_epi8(mm, mm_addend);
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// Insert spaces between stringized bytes:
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__m256i mm_out13 = _mm256_shuffle_epi8(mm, mm_shuffle_pattern13.as_mm);
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__m128i mm_out2 = _mm_shuffle_epi8(_mm_alignr_epi8(_mm256_extractf128_si256(mm, 1), _mm256_castsi256_si128(mm), 10), _mm256_castsi256_si128(mm_shuffle_pattern2.as_mm));
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__m128i mm_char_space = _mm256_castsi256_si128(mm_char_space_mask.as_mm);
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mm_output1 = _mm_or_si128(_mm256_castsi256_si128(mm_out13), mm_char_space);
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mm_char_space = _mm_srli_si128(mm_char_space, 1);
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mm_output2 = _mm_or_si128(mm_output2, mm_char_space);
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mm_output2 = _mm_or_si128(mm_out2, mm_char_space);
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mm_char_space = _mm_srli_si128(mm_char_space, 1);
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mm_output3 = _mm_or_si128(mm_output3, mm_char_space);
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mm_output3 = _mm_or_si128(_mm256_extractf128_si256(mm_out13, 1), mm_char_space);
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}
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template< typename CharT >
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BOOST_LOG_FORCEINLINE void store_characters(__m256i mm_chars, CharT* buf)
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{
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switch (sizeof(CharT))
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{
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case 1:
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_mm256_store_si256(reinterpret_cast< __m256i* >(buf), mm_chars);
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break;
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case 2:
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_mm256_store_si256(reinterpret_cast< __m256i* >(buf), _mm256_cvtepu8_epi16(_mm256_castsi256_si128(mm_chars)));
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_mm256_store_si256(reinterpret_cast< __m256i* >(buf) + 1, _mm256_cvtepu8_epi16(_mm256_extractf128_si256(mm_chars, 1)));
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break;
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case 4:
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{
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__m256i mm = _mm256_unpackhi_epi64(mm_chars, mm_chars);
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_mm256_store_si256(reinterpret_cast< __m256i* >(buf), _mm256_cvtepu8_epi32(_mm256_castsi256_si128(mm_chars)));
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_mm256_store_si256(reinterpret_cast< __m256i* >(buf) + 1, _mm256_cvtepu8_epi32(_mm256_castsi256_si128(mm)));
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_mm256_store_si256(reinterpret_cast< __m256i* >(buf) + 2, _mm256_cvtepu8_epi32(_mm256_extractf128_si256(mm_chars, 1)));
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_mm256_store_si256(reinterpret_cast< __m256i* >(buf) + 3, _mm256_cvtepu8_epi32(_mm256_extractf128_si256(mm, 1)));
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}
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break;
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}
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}
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template< typename CharT >
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@@ -105,22 +158,14 @@ BOOST_LOG_FORCEINLINE void store_characters(__m128i mm_chars, CharT* buf)
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break;
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case 2:
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{
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__m128i mm_0 = _mm_setzero_si128();
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_mm_store_si128(reinterpret_cast< __m128i* >(buf), _mm_unpacklo_epi8(mm_chars, mm_0));
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_mm_store_si128(reinterpret_cast< __m128i* >(buf) + 1, _mm_unpackhi_epi8(mm_chars, mm_0));
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}
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_mm256_store_si256(reinterpret_cast< __m256i* >(buf), _mm256_cvtepu8_epi16(mm_chars));
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break;
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case 4:
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{
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__m128i mm_0 = _mm_setzero_si128();
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__m128i mm = _mm_unpacklo_epi8(mm_chars, mm_0);
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_mm_store_si128(reinterpret_cast< __m128i* >(buf), _mm_unpacklo_epi16(mm, mm_0));
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_mm_store_si128(reinterpret_cast< __m128i* >(buf) + 1, _mm_unpackhi_epi16(mm, mm_0));
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mm = _mm_unpackhi_epi8(mm_chars, mm_0);
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_mm_store_si128(reinterpret_cast< __m128i* >(buf) + 2, _mm_unpacklo_epi16(mm, mm_0));
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_mm_store_si128(reinterpret_cast< __m128i* >(buf) + 3, _mm_unpackhi_epi16(mm, mm_0));
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__m128i mm = _mm_unpackhi_epi64(mm_chars, mm_chars);
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_mm256_store_si256(reinterpret_cast< __m256i* >(buf), _mm256_cvtepu8_epi32(mm_chars));
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_mm256_store_si256(reinterpret_cast< __m256i* >(buf) + 1, _mm256_cvtepu8_epi32(mm));
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}
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break;
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}
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@@ -131,29 +176,26 @@ BOOST_LOG_FORCEINLINE void dump_data_avx2(const void* data, std::size_t size, st
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{
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typedef CharT char_type;
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char_type buf_storage[stride * 3u + 16u];
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// Align the temporary buffer at 16 bytes
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char_type* const buf = reinterpret_cast< char_type* >((uint8_t*)buf_storage + (16u - (((uintptr_t)(char_type*)buf_storage) & 15u)));
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char_type buf_storage[stride * 3u + 32u];
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// Align the temporary buffer at 32 bytes
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char_type* const buf = reinterpret_cast< char_type* >((uint8_t*)buf_storage + (32u - (((uintptr_t)(char_type*)buf_storage) & 31u)));
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char_type* buf_begin = buf + 1u; // skip the first space of the first chunk
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char_type* buf_end = buf + stride * 3u;
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__m128i mm_char_10_to_a;
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if (strm.flags() & std::ios_base::uppercase)
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mm_char_10_to_a = _mm_set1_epi32(0x07070707); // '9' is 0x39 and 'A' is 0x41 in ASCII, so we have to add 0x07 to 0x3A to get uppercase letters
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else
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mm_char_10_to_a = _mm_set1_epi32(0x27272727); // ...and 'a' is 0x61, which means we have to add 0x27 to 0x3A to get lowercase letters
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const __m256i mm_char_a = _mm256_set1_epi8(((strm.flags() & std::ios_base::uppercase) ? 'A' : 'a') - 10);
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// First, check the input alignment
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const uint8_t* p = static_cast< const uint8_t* >(data);
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if (const std::size_t prealign_size = ((16u - ((uintptr_t)p & 15u)) & 15u))
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if (const std::size_t prealign_size = ((32u - ((uintptr_t)p & 31u)) & 31u))
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{
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__m128i mm_input = _mm_lddqu_si128(reinterpret_cast< const __m128i* >(p));
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__m128i mm_output1, mm_output2, mm_output3;
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dump_pack(mm_char_10_to_a, mm_input, mm_output1, mm_output2, mm_output3);
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__m256i mm_input = _mm256_lddqu_si256(reinterpret_cast< const __m256i* >(p));
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__m256i mm_output1, mm_output2, mm_output3;
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dump_pack(mm_char_a, mm_input, mm_output1, mm_output2, mm_output3);
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store_characters(mm_output1, buf);
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store_characters(mm_output2, buf + 16u);
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store_characters(mm_output3, buf + 32u);
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store_characters(mm_output2, buf + 32u);
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store_characters(mm_output3, buf + 64u);
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_mm256_zeroupper();
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strm.write(buf_begin, prealign_size * 3u - 1u);
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buf_begin = buf;
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size -= prealign_size;
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@@ -165,16 +207,17 @@ BOOST_LOG_FORCEINLINE void dump_data_avx2(const void* data, std::size_t size, st
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for (std::size_t i = 0; i < stride_count; ++i)
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{
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char_type* b = buf;
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for (unsigned int j = 0; j < packs_per_stride; ++j, b += 3u * 16u, p += 16u)
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for (unsigned int j = 0; j < packs_per_stride; ++j, b += 3u * 32u, p += 32u)
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{
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__m128i mm_input = _mm_load_si128(reinterpret_cast< const __m128i* >(p));
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__m128i mm_output1, mm_output2, mm_output3;
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dump_pack(mm_char_10_to_a, mm_input, mm_output1, mm_output2, mm_output3);
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__m256i mm_input = _mm256_load_si256(reinterpret_cast< const __m256i* >(p));
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__m256i mm_output1, mm_output2, mm_output3;
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dump_pack(mm_char_a, mm_input, mm_output1, mm_output2, mm_output3);
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store_characters(mm_output1, b);
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store_characters(mm_output2, b + 16u);
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store_characters(mm_output3, b + 32u);
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store_characters(mm_output2, b + 32u);
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store_characters(mm_output3, b + 64u);
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}
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_mm256_zeroupper();
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strm.write(buf_begin, buf_end - buf_begin);
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buf_begin = buf;
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}
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@@ -186,7 +229,7 @@ BOOST_LOG_FORCEINLINE void dump_data_avx2(const void* data, std::size_t size, st
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{
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__m128i mm_input = _mm_load_si128(reinterpret_cast< const __m128i* >(p));
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__m128i mm_output1, mm_output2, mm_output3;
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dump_pack(mm_char_10_to_a, mm_input, mm_output1, mm_output2, mm_output3);
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dump_pack(mm_char_a, mm_input, mm_output1, mm_output2, mm_output3);
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store_characters(mm_output1, b);
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store_characters(mm_output2, b + 16u);
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store_characters(mm_output3, b + 32u);
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@@ -204,6 +247,7 @@ BOOST_LOG_FORCEINLINE void dump_data_avx2(const void* data, std::size_t size, st
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b[2] = static_cast< char_type >(char_table[n & 0x0F]);
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}
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_mm256_zeroupper();
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strm.write(buf_begin, b - buf_begin);
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}
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}
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