TrueCloudLab/tzhash
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Use macros in AVX hash implementation

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This commit is contained in:
Evgenii Stratonikov 2019-10-10 11:29:40 +03:00
parent f296adb043
commit 1d4e7550fc
1 changed files with 14 additions and 16 deletions
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30
tz/avx_amd64.s
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@ -1,5 +1,17 @@
#include "textflag.h" #include "textflag.h"
// mul2 multiplicates FROM by 2, stores result in R1
// and uses R1, R2 and R3 for internal computations.
#define mul2(FROM, TO, R2, R3) \
VPSLLQ $1, FROM, TO \
VPALIGNR $8, TO, FROM, R2 \
PSRLQ $63, R2 \
MOVUPD ·x127x63(SB), R3 \
ANDPD TO, R3 \
VPUNPCKHQDQ R3, R3, R3 \
XORPD R2, TO \
XORPD R3, TO
// func mulBitRight(c00, c01, c10, c11, e *[2]uint64) // func mulBitRight(c00, c01, c10, c11, e *[2]uint64)
TEXT ·mulBitRight(SB),NOSPLIT,$0 TEXT ·mulBitRight(SB),NOSPLIT,$0
MOVQ c00+0(FP), AX MOVQ c00+0(FP), AX
@ -14,14 +26,7 @@ TEXT ·mulBitRight(SB),NOSPLIT,$0
MOVUPD (DX), X3 MOVUPD (DX), X3
// c00 *= 2 // c00 *= 2
VPSLLQ $1, X0, X5 mul2(X0, X5, X6, X7)
VPALIGNR $8, X5, X0, X6
PSRLQ $63, X6
MOVUPD ·x127x63(SB), X7
ANDPD X5, X7
VPUNPCKHQDQ X7, X7, X7
XORPD X6, X5
XORPD X7, X5
MOVUPD X5, X0 MOVUPD X5, X0
// c00 += c01 // c00 += c01
@ -29,14 +34,7 @@ TEXT ·mulBitRight(SB),NOSPLIT,$0
MOVUPD X0, (AX) MOVUPD X0, (AX)
// c10 *= 2 // c10 *= 2
VPSLLQ $1, X2, X5 mul2(X2, X5, X6, X7)
VPALIGNR $8, X5, X2, X6
PSRLQ $63, X6
MOVUPD ·x127x63(SB), X7
ANDPD X5, X7
VPUNPCKHQDQ X7, X7, X7
XORPD X6, X5
XORPD X7, X5
MOVUPD X5, X2 MOVUPD X5, X2
// c10 += c11 // c10 += c11