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galoisAvx512_amd64.s
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galoisAvx512_amd64.s
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//+build !noasm
//+build !appengine
//+build !gccgo
// Copyright 2015, Klaus Post, see LICENSE for details.
// Copyright 2019, Minio, Inc.
#define LOAD(OFFSET) \
MOVQ OFFSET(SI), BX \
VMOVDQU64 (BX)(R11*1), Z0 \
VPSRLQ $4, Z0, Z1 \ // high input
VPANDQ Z2, Z0, Z0 \ // low input
VPANDQ Z2, Z1, Z1 // high input
#define GALOIS_MUL(MUL_LO, MUL_HI, LO, HI, OUT) \
VPSHUFB Z0, MUL_LO, LO \ // mul low part
VPSHUFB Z1, MUL_HI, HI \ // mul high part
VPTERNLOGD $0x96, LO, HI, OUT
#define GALOIS(C1, C2, IN, LO, HI, OUT) \
VSHUFI64X2 $C1, IN, IN, LO \
VSHUFI64X2 $C2, IN, IN, HI \
GALOIS_MUL(LO, HI, LO, HI, OUT)
//
// Process single output row from a total of 8 input rows
//
// func _galMulAVX512Parallel81(in, out [][]byte, matrix *[matrixSize81]byte, addTo bool)
TEXT ·_galMulAVX512Parallel81(SB), 7, $0
MOVQ in+0(FP), SI
MOVQ 8(SI), R9 // R9: len(in)
SHRQ $6, R9 // len(in) / 64
TESTQ R9, R9
JZ done_avx512_parallel81
MOVQ matrix+48(FP), SI
VMOVDQU64 0x000(SI), Z16
VMOVDQU64 0x040(SI), Z17
VMOVDQU64 0x080(SI), Z18
VMOVDQU64 0x0c0(SI), Z19
// Initialize multiplication constants
VSHUFI64X2 $0x55, Z16, Z16, Z20
VSHUFI64X2 $0xaa, Z16, Z16, Z24
VSHUFI64X2 $0xff, Z16, Z16, Z28
VSHUFI64X2 $0x00, Z16, Z16, Z16
VSHUFI64X2 $0x55, Z17, Z17, Z21
VSHUFI64X2 $0xaa, Z17, Z17, Z25
VSHUFI64X2 $0xff, Z17, Z17, Z29
VSHUFI64X2 $0x00, Z17, Z17, Z17
VSHUFI64X2 $0x55, Z18, Z18, Z22
VSHUFI64X2 $0xaa, Z18, Z18, Z26
VSHUFI64X2 $0xff, Z18, Z18, Z30
VSHUFI64X2 $0x00, Z18, Z18, Z18
VSHUFI64X2 $0x55, Z19, Z19, Z23
VSHUFI64X2 $0xaa, Z19, Z19, Z27
VSHUFI64X2 $0xff, Z19, Z19, Z31
VSHUFI64X2 $0x00, Z19, Z19, Z19
MOVQ $15, BX
VPBROADCASTB BX, Z2
MOVB addTo+56(FP), AX
IMULQ $-0x1, AX
KMOVQ AX, K1
MOVQ in+0(FP), SI // SI: &in
MOVQ in_len+8(FP), AX // number of inputs
XORQ R11, R11
MOVQ out+24(FP), DX
MOVQ (DX), DX // DX: &out[0][0]
loopback_avx512_parallel81:
VMOVDQU64.Z (DX), K1, Z4
LOAD(0x00) // &in[0][0]
GALOIS_MUL(Z16, Z20, Z14, Z15, Z4)
CMPQ AX, $1
JE skip_avx512_parallel81
LOAD(0x18) // &in[1][0]
GALOIS_MUL(Z24, Z28, Z14, Z15, Z4)
CMPQ AX, $2
JE skip_avx512_parallel81
LOAD(0x30) // &in[2][0]
GALOIS_MUL(Z17, Z21, Z14, Z15, Z4)
CMPQ AX, $3
JE skip_avx512_parallel81
LOAD(0x48) // &in[3][0]
GALOIS_MUL(Z25, Z29, Z14, Z15, Z4)
CMPQ AX, $4
JE skip_avx512_parallel81
LOAD(0x60) // &in[4][0]
GALOIS_MUL(Z18, Z22, Z14, Z15, Z4)
CMPQ AX, $5
JE skip_avx512_parallel81
LOAD(0x78) // &in[5][0]
GALOIS_MUL(Z26, Z30, Z14, Z15, Z4)
CMPQ AX, $6
JE skip_avx512_parallel81
LOAD(0x90) // &in[6][0]
GALOIS_MUL(Z19, Z23, Z14, Z15, Z4)
CMPQ AX, $7
JE skip_avx512_parallel81
LOAD(0xa8) // &in[7][0]
GALOIS_MUL(Z27, Z31, Z14, Z15, Z4)
skip_avx512_parallel81:
VMOVDQU64 Z4, (DX)
ADDQ $64, R11 // in4+=64
ADDQ $64, DX // out+=64
SUBQ $1, R9
JNZ loopback_avx512_parallel81
done_avx512_parallel81:
VZEROUPPER
RET
//
// Process 2 output rows in parallel from a total of 8 input rows
//
// func _galMulAVX512Parallel82(in, out [][]byte, matrix *[matrixSize82]byte, addTo bool)
TEXT ·_galMulAVX512Parallel82(SB), 7, $0
MOVQ in+0(FP), SI
MOVQ 8(SI), R9 // R9: len(in)
SHRQ $6, R9 // len(in) / 64
TESTQ R9, R9
JZ done_avx512_parallel82
MOVQ matrix+48(FP), SI
VMOVDQU64 0x000(SI), Z16
VMOVDQU64 0x040(SI), Z17
VMOVDQU64 0x080(SI), Z18
VMOVDQU64 0x0c0(SI), Z19
VMOVDQU64 0x100(SI), Z20
VMOVDQU64 0x140(SI), Z21
VMOVDQU64 0x180(SI), Z22
VMOVDQU64 0x1c0(SI), Z23
// Initialize multiplication constants
VSHUFI64X2 $0x55, Z16, Z16, Z24
VSHUFI64X2 $0xaa, Z16, Z16, Z25
VSHUFI64X2 $0xff, Z16, Z16, Z26
VSHUFI64X2 $0x00, Z16, Z16, Z16
VSHUFI64X2 $0x55, Z20, Z20, Z27
VSHUFI64X2 $0xaa, Z20, Z20, Z28
VSHUFI64X2 $0xff, Z20, Z20, Z29
VSHUFI64X2 $0x00, Z20, Z20, Z20
VSHUFI64X2 $0x55, Z17, Z17, Z30
VSHUFI64X2 $0xaa, Z17, Z17, Z31
VSHUFI64X2 $0xff, Z17, Z17, Z11
VSHUFI64X2 $0x00, Z17, Z17, Z17
VSHUFI64X2 $0x55, Z21, Z21, Z8
VSHUFI64X2 $0xaa, Z21, Z21, Z9
VSHUFI64X2 $0xff, Z21, Z21, Z10
VSHUFI64X2 $0x00, Z21, Z21, Z21
MOVQ $15, BX
VPBROADCASTB BX, Z2
MOVB addTo+56(FP), AX
IMULQ $-0x1, AX
KMOVQ AX, K1
MOVQ in+0(FP), SI // SI: &in
MOVQ in_len+8(FP), AX // number of inputs
XORQ R11, R11
MOVQ out+24(FP), DX
MOVQ 24(DX), CX // CX: &out[1][0]
MOVQ (DX), DX // DX: &out[0][0]
loopback_avx512_parallel82:
VMOVDQU64.Z (DX), K1, Z4
VMOVDQU64.Z (CX), K1, Z5
LOAD(0x00) // &in[0][0]
GALOIS_MUL(Z16, Z24, Z14, Z15, Z4)
GALOIS_MUL(Z20, Z27, Z12, Z13, Z5)
CMPQ AX, $1
JE skip_avx512_parallel82
LOAD(0x18) // &in[1][0]
GALOIS_MUL(Z25, Z26, Z14, Z15, Z4)
GALOIS_MUL(Z28, Z29, Z12, Z13, Z5)
CMPQ AX, $2
JE skip_avx512_parallel82
LOAD(0x30) // &in[2][0]
GALOIS_MUL(Z17, Z30, Z14, Z15, Z4)
GALOIS_MUL(Z21, Z8, Z12, Z13, Z5)
CMPQ AX, $3
JE skip_avx512_parallel82
LOAD(0x48) // &in[3][0]
GALOIS_MUL(Z31, Z11, Z14, Z15, Z4)
GALOIS_MUL(Z9, Z10, Z12, Z13, Z5)
CMPQ AX, $4
JE skip_avx512_parallel82
LOAD(0x60) // &in[4][0]
GALOIS(0x00, 0x55, Z18, Z14, Z15, Z4)
GALOIS(0x00, 0x55, Z22, Z12, Z13, Z5)
CMPQ AX, $5
JE skip_avx512_parallel82
LOAD(0x78) // &in[5][0]
GALOIS(0xaa, 0xff, Z18, Z14, Z15, Z4)
GALOIS(0xaa, 0xff, Z22, Z12, Z13, Z5)
CMPQ AX, $6
JE skip_avx512_parallel82
LOAD(0x90) // &in[6][0]
GALOIS(0x00, 0x55, Z19, Z14, Z15, Z4)
GALOIS(0x00, 0x55, Z23, Z12, Z13, Z5)
CMPQ AX, $7
JE skip_avx512_parallel82
LOAD(0xa8) // &in[7][0]
GALOIS(0xaa, 0xff, Z19, Z14, Z15, Z4)
GALOIS(0xaa, 0xff, Z23, Z12, Z13, Z5)
skip_avx512_parallel82:
VMOVDQU64 Z4, (DX)
VMOVDQU64 Z5, (CX)
ADDQ $64, R11 // in4+=64
ADDQ $64, DX // out+=64
ADDQ $64, CX // out2+=64
SUBQ $1, R9
JNZ loopback_avx512_parallel82
done_avx512_parallel82:
VZEROUPPER
RET
//
// Process 4 output rows in parallel from a total of 8 input rows
//
// func _galMulAVX512Parallel84(in, out [][]byte, matrix *[matrixSize84]byte, addTo bool)
TEXT ·_galMulAVX512Parallel84(SB), 7, $0
MOVQ in+0(FP), SI
MOVQ 8(SI), R9 // R9: len(in)
SHRQ $6, R9 // len(in) / 64
TESTQ R9, R9
JZ done_avx512_parallel84
MOVQ matrix+48(FP), SI
VMOVDQU64 0x000(SI), Z16
VMOVDQU64 0x040(SI), Z17
VMOVDQU64 0x080(SI), Z18
VMOVDQU64 0x0c0(SI), Z19
VMOVDQU64 0x100(SI), Z20
VMOVDQU64 0x140(SI), Z21
VMOVDQU64 0x180(SI), Z22
VMOVDQU64 0x1c0(SI), Z23
VMOVDQU64 0x200(SI), Z24
VMOVDQU64 0x240(SI), Z25
VMOVDQU64 0x280(SI), Z26
VMOVDQU64 0x2c0(SI), Z27
VMOVDQU64 0x300(SI), Z28
VMOVDQU64 0x340(SI), Z29
VMOVDQU64 0x380(SI), Z30
VMOVDQU64 0x3c0(SI), Z31
MOVQ $15, BX
VPBROADCASTB BX, Z2
MOVB addTo+56(FP), AX
IMULQ $-0x1, AX
KMOVQ AX, K1
MOVQ in+0(FP), SI // SI: &in
MOVQ in_len+8(FP), AX // number of inputs
XORQ R11, R11
MOVQ out+24(FP), DX
MOVQ 24(DX), CX // CX: &out[1][0]
MOVQ 48(DX), R10 // R10: &out[2][0]
MOVQ 72(DX), R12 // R12: &out[3][0]
MOVQ (DX), DX // DX: &out[0][0]
loopback_avx512_parallel84:
VMOVDQU64.Z (DX), K1, Z4
VMOVDQU64.Z (CX), K1, Z5
VMOVDQU64.Z (R10), K1, Z6
VMOVDQU64.Z (R12), K1, Z7
LOAD(0x00) // &in[0][0]
GALOIS(0x00, 0x55, Z16, Z14, Z15, Z4)
GALOIS(0x00, 0x55, Z20, Z12, Z13, Z5)
GALOIS(0x00, 0x55, Z24, Z10, Z11, Z6)
GALOIS(0x00, 0x55, Z28, Z8, Z9, Z7)
CMPQ AX, $1
JE skip_avx512_parallel84
LOAD(0x18) // &in[1][0]
GALOIS(0xaa, 0xff, Z16, Z14, Z15, Z4)
GALOIS(0xaa, 0xff, Z20, Z12, Z13, Z5)
GALOIS(0xaa, 0xff, Z24, Z10, Z11, Z6)
GALOIS(0xaa, 0xff, Z28, Z8, Z9, Z7)
CMPQ AX, $2
JE skip_avx512_parallel84
LOAD(0x30) // &in[2][0]
GALOIS(0x00, 0x55, Z17, Z14, Z15, Z4)
GALOIS(0x00, 0x55, Z21, Z12, Z13, Z5)
GALOIS(0x00, 0x55, Z25, Z10, Z11, Z6)
GALOIS(0x00, 0x55, Z29, Z8, Z9, Z7)
CMPQ AX, $3
JE skip_avx512_parallel84
LOAD(0x48) // &in[3][0]
GALOIS(0xaa, 0xff, Z17, Z14, Z15, Z4)
GALOIS(0xaa, 0xff, Z21, Z12, Z13, Z5)
GALOIS(0xaa, 0xff, Z25, Z10, Z11, Z6)
GALOIS(0xaa, 0xff, Z29, Z8, Z9, Z7)
CMPQ AX, $4
JE skip_avx512_parallel84
LOAD(0x60) // &in[4][0]
GALOIS(0x00, 0x55, Z18, Z14, Z15, Z4)
GALOIS(0x00, 0x55, Z22, Z12, Z13, Z5)
GALOIS(0x00, 0x55, Z26, Z10, Z11, Z6)
GALOIS(0x00, 0x55, Z30, Z8, Z9, Z7)
CMPQ AX, $5
JE skip_avx512_parallel84
LOAD(0x78) // &in[5][0]
GALOIS(0xaa, 0xff, Z18, Z14, Z15, Z4)
GALOIS(0xaa, 0xff, Z22, Z12, Z13, Z5)
GALOIS(0xaa, 0xff, Z26, Z10, Z11, Z6)
GALOIS(0xaa, 0xff, Z30, Z8, Z9, Z7)
CMPQ AX, $6
JE skip_avx512_parallel84
LOAD(0x90) // &in[6][0]
GALOIS(0x00, 0x55, Z19, Z14, Z15, Z4)
GALOIS(0x00, 0x55, Z23, Z12, Z13, Z5)
GALOIS(0x00, 0x55, Z27, Z10, Z11, Z6)
GALOIS(0x00, 0x55, Z31, Z8, Z9, Z7)
CMPQ AX, $7
JE skip_avx512_parallel84
LOAD(0xa8) // &in[7][0]
GALOIS(0xaa, 0xff, Z19, Z14, Z15, Z4)
GALOIS(0xaa, 0xff, Z23, Z12, Z13, Z5)
GALOIS(0xaa, 0xff, Z27, Z10, Z11, Z6)
GALOIS(0xaa, 0xff, Z31, Z8, Z9, Z7)
skip_avx512_parallel84:
VMOVDQU64 Z4, (DX)
VMOVDQU64 Z5, (CX)
VMOVDQU64 Z6, (R10)
VMOVDQU64 Z7, (R12)
ADDQ $64, R11 // in4+=64
ADDQ $64, DX // out+=64
ADDQ $64, CX // out2+=64
ADDQ $64, R10 // out3+=64
ADDQ $64, R12 // out4+=64
SUBQ $1, R9
JNZ loopback_avx512_parallel84
done_avx512_parallel84:
VZEROUPPER
RET