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[VSX] optimized mask1bit128(), moved simd_onebit_masks to common

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This commit is contained in:
Konstantinos Margaritis 2022-09-06 18:10:55 +03:00
parent 43c053a069
commit 026f761671
2 changed files with 23 additions and 39 deletions
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18
src/util/arch/common/simd_utils.h
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@ -88,6 +88,24 @@ static inline void print_m128_2x64(const char *label, m128 vec) {
#define print_m128_2x64(label, vec) ;
#endif
#define ZEROES_8 0, 0, 0, 0, 0, 0, 0, 0
#define ZEROES_31 ZEROES_8, ZEROES_8, ZEROES_8, 0, 0, 0, 0, 0, 0, 0
#define ZEROES_32 ZEROES_8, ZEROES_8, ZEROES_8, ZEROES_8
/** \brief LUT for the mask1bit functions. */
ALIGN_CL_DIRECTIVE static const u8 simd_onebit_masks[] = {
ZEROES_32, ZEROES_32,
ZEROES_31, 0x01, ZEROES_32,
ZEROES_31, 0x02, ZEROES_32,
ZEROES_31, 0x04, ZEROES_32,
ZEROES_31, 0x08, ZEROES_32,
ZEROES_31, 0x10, ZEROES_32,
ZEROES_31, 0x20, ZEROES_32,
ZEROES_31, 0x40, ZEROES_32,
ZEROES_31, 0x80, ZEROES_32,
ZEROES_32, ZEROES_32,
};
/****
**** 256-bit Primitives
****/

44
src/util/arch/ppc64el/simd_utils.h
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@ -54,34 +54,6 @@ typedef __vector signed char int8x16_t;
typedef unsigned long long int ulong64_t;
typedef signed long long int long64_t;
/*
typedef __vector uint64_t uint64x2_t;
typedef __vector int64_t int64x2_t;
typedef __vector uint32_t uint32x4_t;
typedef __vector int32_t int32x4_t;
typedef __vector uint16_t uint16x8_t;
typedef __vector int16_t int16x8_t;
typedef __vector uint8_t uint8x16_t;
typedef __vector int8_t int8x16_t;*/
#define ZEROES_8 0, 0, 0, 0, 0, 0, 0, 0
#define ZEROES_31 ZEROES_8, ZEROES_8, ZEROES_8, 0, 0, 0, 0, 0, 0, 0
#define ZEROES_32 ZEROES_8, ZEROES_8, ZEROES_8, ZEROES_8
/** \brief LUT for the mask1bit functions. */
ALIGN_CL_DIRECTIVE static const u8 simd_onebit_masks[] = {
ZEROES_32, ZEROES_32,
ZEROES_31, 0x01, ZEROES_32,
ZEROES_31, 0x02, ZEROES_32,
ZEROES_31, 0x04, ZEROES_32,
ZEROES_31, 0x08, ZEROES_32,
ZEROES_31, 0x10, ZEROES_32,
ZEROES_31, 0x20, ZEROES_32,
ZEROES_31, 0x40, ZEROES_32,
ZEROES_31, 0x80, ZEROES_32,
ZEROES_32, ZEROES_32,
};
static really_inline m128 ones128(void) {
return (m128) vec_splat_u8(-1);
@ -115,10 +87,6 @@ static really_inline u32 diffrich128(m128 a, m128 b) {
m128 mask = (m128) vec_cmpeq(a, b); // _mm_cmpeq_epi32 (a, b);
mask = vec_and(not128(mask), movemask);
m128 sum = vec_sums(mask, zeroes128());
//sum = vec_sld(zeroes128(), sum, 4);
//s32 ALIGN_ATTR(16) x;
//vec_ste(sum, 0, &x);
//return x; // it could be ~(movemask_128(mask)) & 0x;
return sum[3];
}
@ -131,10 +99,6 @@ static really_inline u32 diffrich64_128(m128 a, m128 b) {
uint64x2_t mask = (uint64x2_t) vec_cmpeq((uint64x2_t)a, (uint64x2_t)b);
mask = (uint64x2_t) vec_and((uint64x2_t)not128((m128)mask), movemask);
m128 sum = vec_sums((m128)mask, zeroes128());
//sum = vec_sld(zeroes128(), sum, 4);
//s32 ALIGN_ATTR(16) x;
//vec_ste(sum, 0, &x);
//return x;
return sum[3];
}
@ -425,9 +389,11 @@ m128 variable_byte_shift_m128(m128 in, s32 amount) {
static really_inline
m128 mask1bit128(unsigned int n) {
assert(n < sizeof(m128) * 8);
u32 mask_idx = ((n % 8) * 64) + 95;
mask_idx -= n / 8;
return loadu128(&simd_onebit_masks[mask_idx]);
static uint64x2_t onebit = { 1, 0 };
m128 octets = (m128) vec_splats((uint8_t) ((n / 8) << 3));
m128 bits = (m128) vec_splats((uint8_t) ((n % 8)));
m128 mask = (m128) vec_slo((uint8x16_t) onebit, (uint8x16_t) octets);
return (m128) vec_sll((uint8x16_t) mask, (uint8x16_t) bits);
}
// switches on bit N in the given vector.