mirror of
https://github.com/simdjson/simdjson
synced 2026-06-08 17:27:07 +00:00
John Keiser
38 lines
1.2 KiB
C++
38 lines
1.2 KiB
C++
#ifndef SIMDJSON_STRINGPARSING_WESTMERE_H
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#define SIMDJSON_STRINGPARSING_WESTMERE_H
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#include "simdjson/stringparsing.h"
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#ifdef IS_X86_64
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TARGET_WESTMERE
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namespace simdjson {
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template <>
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really_inline parse_string_helper
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find_bs_bits_and_quote_bits<Architecture::WESTMERE>(const uint8_t *src,
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uint8_t *dst) {
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// this can read up to 31 bytes beyond the buffer size, but we require
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// SIMDJSON_PADDING of padding
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__m128i v = _mm_loadu_si128(reinterpret_cast<const __m128i *>(src));
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// store to dest unconditionally - we can overwrite the bits we don't like
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// later
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_mm_storeu_si128(reinterpret_cast<__m128i *>(dst), v);
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auto quote_mask = _mm_cmpeq_epi8(v, _mm_set1_epi8('"'));
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return {
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static_cast<uint32_t>(
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_mm_movemask_epi8(_mm_cmpeq_epi8(v, _mm_set1_epi8('\\')))), // bs_bits
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static_cast<uint32_t>(_mm_movemask_epi8(quote_mask)) // quote_bits
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};
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}
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} // namespace simdjson
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UNTARGET_REGION
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#define TARGETED_ARCHITECTURE Architecture::WESTMERE
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#define TARGETED_REGION TARGET_WESTMERE
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#include "simdjson/stringparsing_common.h"
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#undef TARGETED_ARCHITECTURE
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#undef TARGETED_REGION
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#endif // IS_X86_64
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#endif
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