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v3.15.7

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Jay D Dee
2021-03-08 22:44:44 -05:00
parent dc6b007a18
commit 40089428c5
26 changed files with 601 additions and 2164 deletions
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74
simd-utils/simd-int.h
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@@ -1,69 +1,16 @@
#if !defined(SIMD_INT_H__)
#define SIMD_INT_H__ 1
///////////////////////////////////
//
// Integers up to 128 bits.
//
// These utilities enhance support for integers up to 128 bits.
// All standard operations are supported on 128 bit integers except
// numeric constant representation and IO. 128 bit integers must be built
// and displayed as 2 64 bit halves, just like the old times.
//
// Some utilities are also provided for smaller integers, most notably
// bit rotation.
// MMX has no extract instruction for 32 bit elements so this:
// Lo is trivial, high is a simple shift.
// Input may be uint64_t or __m64, returns uint32_t.
#define u64_extr_lo32(a) ( (uint32_t)( (uint64_t)(a) ) )
#define u64_extr_hi32(a) ( (uint32_t)( ((uint64_t)(a)) >> 32) )
#define u64_extr_32( a, n ) ( (uint32_t)( (a) >> ( ( 2-(n)) <<5 ) ) )
#define u64_extr_16( a, n ) ( (uint16_t)( (a) >> ( ( 4-(n)) <<4 ) ) )
#define u64_extr_8( a, n ) ( (uint8_t) ( (a) >> ( ( 8-(n)) <<3 ) ) )
// Rotate bits in various sized integers.
#define u64_ror_64( x, c ) \
(uint64_t)( ( (uint64_t)(x) >> (c) ) | ( (uint64_t)(x) << (64-(c)) ) )
#define u64_rol_64( x, c ) \
(uint64_t)( ( (uint64_t)(x) << (c) ) | ( (uint64_t)(x) >> (64-(c)) ) )
#define u32_ror_32( x, c ) \
(uint32_t)( ( (uint32_t)(x) >> (c) ) | ( (uint32_t)(x) << (32-(c)) ) )
#define u32_rol_32( x, c ) \
(uint32_t)( ( (uint32_t)(x) << (c) ) | ( (uint32_t)(x) >> (32-(c)) ) )
#define u16_ror_16( x, c ) \
(uint16_t)( ( (uint16_t)(x) >> (c) ) | ( (uint16_t)(x) << (16-(c)) ) )
#define u16_rol_16( x, c ) \
(uint16_t)( ( (uint16_t)(x) << (c) ) | ( (uint16_t)(x) >> (16-(c)) ) )
#define u8_ror_8( x, c ) \
(uint8_t) ( ( (uint8_t) (x) >> (c) ) | ( (uint8_t) (x) << ( 8-(c)) ) )
#define u8_rol_8( x, c ) \
(uint8_t) ( ( (uint8_t) (x) << (c) ) | ( (uint8_t) (x) >> ( 8-(c)) ) )
// Endian byte swap
#define bswap_64( a ) __builtin_bswap64( a )
#define bswap_32( a ) __builtin_bswap32( a )
// 64 bit mem functions use integral sizes instead of bytes, data must
// be aligned to 64 bits. Mostly for scaled indexing convenience.
static inline void memcpy_64( uint64_t *dst, const uint64_t *src, int n )
{ for ( int i = 0; i < n; i++ ) dst[i] = src[i]; }
static inline void memset_zero_64( uint64_t *src, int n )
{ for ( int i = 0; i < n; i++ ) src[i] = 0ull; }
static inline void memset_64( uint64_t *dst, const uint64_t a, int n )
{ for ( int i = 0; i < n; i++ ) dst[i] = a; }
///////////////////////////////////////
//
// 128 bit integers
//
// 128 bit integers are inneficient and not a shortcut for __m128i.
// 128 bit integers are inneficient and not a shortcut for __m128i.
// Native type __int128 supported starting with GCC-4.8.
//
// __int128 uses two 64 bit GPRs to hold the data. The main benefits are
@@ -94,31 +41,12 @@ static inline void memset_64( uint64_t *dst, const uint64_t a, int n )
typedef __int128 int128_t;
typedef unsigned __int128 uint128_t;
// Maybe usefull for making constants.
#define mk_uint128( hi, lo ) \
( ( (uint128_t)(hi) << 64 ) | ( (uint128_t)(lo) ) )
// Extracting the low bits is a trivial cast.
// These specialized functions are optimized while providing a
// consistent interface.
#define u128_hi64( x ) ( (uint64_t)( (uint128_t)(x) >> 64 ) )
#define u128_lo64( x ) ( (uint64_t)(x) )
// Generic extract, don't use for extracting low bits, cast instead.
#define u128_extr_64( a, n ) ( (uint64_t)( (a) >> ( ( 2-(n)) <<6 ) ) )
#define u128_extr_32( a, n ) ( (uint32_t)( (a) >> ( ( 4-(n)) <<5 ) ) )
#define u128_extr_16( a, n ) ( (uint16_t)( (a) >> ( ( 8-(n)) <<4 ) ) )
#define u128_extr_8( a, n ) ( (uint8_t) ( (a) >> ( (16-(n)) <<3 ) ) )
// Not much need for this but it fills a gap.
#define u128_ror_128( x, c ) \
( ( (uint128_t)(x) >> (c) ) | ( (uint128_t)(x) << (128-(c)) ) )
#define u128_rol_128( x, c ) \
( ( (uint128_t)(x) << (c) ) | ( (uint128_t)(x) >> (128-(c)) ) )
#endif // GCC_INT128
#endif // SIMD_INT_H__