add intrinsic file include for _mm_crc32_u32
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@ -45,6 +45,7 @@ extern B scan_max_num(B x, u8 xe, u64 ia);
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// These hashes are stored in tables and must be invertible!
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#if defined(__SSE4_2__)
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#include <x86intrin.h>
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static inline u32 hash32(u32 x) { return _mm_crc32_u32(0x973afb51, x); }
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#else
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// Murmur3
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