2009-08-14 12:53:27 -06:00
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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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2009-08-18 11:41:26 -06:00
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// This file provides fast assembly versions for the elementary
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// arithmetic operations on vectors implemented in arith.go.
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2009-08-15 12:43:54 -06:00
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2009-08-14 12:53:27 -06:00
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// TODO(gri) - experiment with unrolled loops for faster execution
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2010-04-19 20:07:22 -06:00
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// func addVV(z, x, y *Word, n int) (c Word)
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TEXT ·addVV(SB),7,$0
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2009-08-26 13:55:54 -06:00
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MOVQ z+0(FP), R10
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MOVQ x+8(FP), R8
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MOVQ y+16(FP), R9
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MOVL n+24(FP), R11
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MOVQ $0, BX // i = 0
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MOVQ $0, DX // c = 0
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2009-08-14 12:53:27 -06:00
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JMP E1
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L1: MOVQ (R8)(BX*8), AX
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RCRQ $1, DX
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ADCQ (R9)(BX*8), AX
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RCLQ $1, DX
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MOVQ AX, (R10)(BX*8)
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ADDL $1, BX // i++
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E1: CMPQ BX, R11 // i < n
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JL L1
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2009-08-26 13:55:54 -06:00
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MOVQ DX, c+32(FP)
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2009-08-14 12:53:27 -06:00
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RET
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2010-04-19 20:07:22 -06:00
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// func subVV(z, x, y *Word, n int) (c Word)
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// (same as addVV_s except for SBBQ instead of ADCQ and label names)
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TEXT ·subVV(SB),7,$0
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2009-08-26 13:55:54 -06:00
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MOVQ z+0(FP), R10
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MOVQ x+8(FP), R8
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MOVQ y+16(FP), R9
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MOVL n+24(FP), R11
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MOVQ $0, BX // i = 0
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MOVQ $0, DX // c = 0
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2009-08-14 12:53:27 -06:00
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JMP E2
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L2: MOVQ (R8)(BX*8), AX
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RCRQ $1, DX
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SBBQ (R9)(BX*8), AX
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RCLQ $1, DX
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MOVQ AX, (R10)(BX*8)
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2009-08-26 13:55:54 -06:00
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ADDL $1, BX // i++
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E2: CMPQ BX, R11 // i < n
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JL L2
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2009-08-26 13:55:54 -06:00
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MOVQ DX, c+32(FP)
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RET
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2010-04-19 20:07:22 -06:00
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// func addVW(z, x *Word, y Word, n int) (c Word)
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TEXT ·addVW(SB),7,$0
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2009-08-26 13:55:54 -06:00
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MOVQ z+0(FP), R10
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MOVQ x+8(FP), R8
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MOVQ y+16(FP), AX // c = y
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MOVL n+24(FP), R11
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MOVQ $0, BX // i = 0
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2009-08-14 12:53:27 -06:00
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JMP E3
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L3: ADDQ (R8)(BX*8), AX
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MOVQ AX, (R10)(BX*8)
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RCLQ $1, AX
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ANDQ $1, AX
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ADDL $1, BX // i++
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E3: CMPQ BX, R11 // i < n
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JL L3
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2009-08-26 13:55:54 -06:00
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MOVQ AX, c+32(FP)
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RET
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2010-04-19 20:07:22 -06:00
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// func subVW(z, x *Word, y Word, n int) (c Word)
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TEXT ·subVW(SB),7,$0
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2009-08-26 13:55:54 -06:00
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MOVQ z+0(FP), R10
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MOVQ x+8(FP), R8
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MOVQ y+16(FP), AX // c = y
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MOVL n+24(FP), R11
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MOVQ $0, BX // i = 0
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2009-08-14 12:53:27 -06:00
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JMP E4
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L4: MOVQ (R8)(BX*8), DX // TODO(gri) is there a reverse SUBQ?
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SUBQ AX, DX
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MOVQ DX, (R10)(BX*8)
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RCLQ $1, AX
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ANDQ $1, AX
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ADDL $1, BX // i++
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E4: CMPQ BX, R11 // i < n
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JL L4
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2009-08-26 13:55:54 -06:00
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MOVQ AX, c+32(FP)
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RET
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2010-04-30 10:29:11 -06:00
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// func shlVW(z, x *Word, s Word, n int) (c Word)
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TEXT ·shlVW(SB),7,$0
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MOVQ z+0(FP), R10
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MOVQ x+8(FP), R8
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MOVQ s+16(FP), CX
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MOVL n+24(FP), R11
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MOVQ $0, AX // c = 0
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MOVQ $0, BX // i = 0
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JMP E8
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L8: MOVQ (R8)(BX*8), DX
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MOVQ DX, R12
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SHLQ CX, DX:AX
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MOVQ DX, (R10)(BX*8)
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MOVQ R12, AX
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ADDL $1, BX // i++
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E8: CMPQ BX, R11 // i < n
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JL L8
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MOVQ $0, DX
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SHLQ CX, DX:AX
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MOVQ DX, c+32(FP)
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RET
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// func shrVW(z, x *Word, s Word, n int) (c Word)
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TEXT ·shrVW(SB),7,$0
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MOVQ z+0(FP), R10
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MOVQ x+8(FP), R8
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MOVQ s+16(FP), CX
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MOVL n+24(FP), BX // i = n
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MOVQ $0, AX // c = 0
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JMP E9
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L9: MOVQ (R8)(BX*8), DX
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MOVQ DX, R12
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SHRQ CX, DX:AX
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MOVQ DX, (R10)(BX*8)
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MOVQ R12, AX
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E9: SUBL $1, BX // i--
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JGE L9
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MOVQ $0, DX
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SHRQ CX, DX:AX
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MOVQ DX, c+32(FP)
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RET
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2010-04-19 20:07:22 -06:00
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// func mulAddVWW(z, x *Word, y, r Word, n int) (c Word)
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TEXT ·mulAddVWW(SB),7,$0
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MOVQ z+0(FP), R10
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MOVQ x+8(FP), R8
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MOVQ y+16(FP), R9
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MOVQ r+24(FP), CX // c = r
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MOVL n+32(FP), R11
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MOVQ $0, BX // i = 0
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2009-08-18 11:06:15 -06:00
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JMP E5
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L5: MOVQ (R8)(BX*8), AX
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MULQ R9
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ADDQ CX, AX
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ADCQ $0, DX
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MOVQ AX, (R10)(BX*8)
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MOVQ DX, CX
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2009-08-26 13:55:54 -06:00
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ADDL $1, BX // i++
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2009-08-18 11:06:15 -06:00
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2009-08-26 13:55:54 -06:00
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E5: CMPQ BX, R11 // i < n
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2009-08-18 11:06:15 -06:00
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JL L5
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2009-08-26 13:55:54 -06:00
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MOVQ CX, c+40(FP)
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2009-08-18 11:06:15 -06:00
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RET
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2010-04-19 20:07:22 -06:00
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// func addMulVVW(z, x *Word, y Word, n int) (c Word)
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TEXT ·addMulVVW(SB),7,$0
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2009-08-26 13:55:54 -06:00
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MOVQ z+0(FP), R10
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MOVQ x+8(FP), R8
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MOVQ y+16(FP), R9
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MOVL n+24(FP), R11
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MOVQ $0, BX // i = 0
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MOVQ $0, CX // c = 0
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2009-08-15 12:43:54 -06:00
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JMP E6
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2009-08-14 12:53:27 -06:00
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2009-08-15 12:43:54 -06:00
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L6: MOVQ (R8)(BX*8), AX
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2009-08-14 12:53:27 -06:00
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MULQ R9
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2009-08-18 11:06:15 -06:00
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ADDQ (R10)(BX*8), AX
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ADCQ $0, DX
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2009-08-14 12:53:27 -06:00
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ADDQ CX, AX
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ADCQ $0, DX
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MOVQ AX, (R10)(BX*8)
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MOVQ DX, CX
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2009-08-26 13:55:54 -06:00
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ADDL $1, BX // i++
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2009-08-26 13:55:54 -06:00
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E6: CMPQ BX, R11 // i < n
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2009-08-15 12:43:54 -06:00
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JL L6
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2009-08-14 12:53:27 -06:00
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2009-08-26 13:55:54 -06:00
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MOVQ CX, c+32(FP)
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2009-08-14 12:53:27 -06:00
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RET
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2010-04-19 20:07:22 -06:00
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// divWVW(z* Word, xn Word, x *Word, y Word, n int) (r Word)
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TEXT ·divWVW(SB),7,$0
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2009-08-26 13:55:54 -06:00
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MOVQ z+0(FP), R10
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MOVQ xn+8(FP), DX // r = xn
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MOVQ x+16(FP), R8
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MOVQ y+24(FP), R9
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MOVL n+32(FP), BX // i = n
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2009-08-15 12:43:54 -06:00
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JMP E7
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2009-08-14 12:53:27 -06:00
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2009-08-15 12:43:54 -06:00
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L7: MOVQ (R8)(BX*8), AX
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2009-08-14 12:53:27 -06:00
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DIVQ R9
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MOVQ AX, (R10)(BX*8)
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2009-08-26 13:55:54 -06:00
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E7: SUBL $1, BX // i--
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JGE L7 // i >= 0
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2009-08-14 12:53:27 -06:00
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2009-08-26 13:55:54 -06:00
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MOVQ DX, r+40(FP)
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2009-08-14 12:53:27 -06:00
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RET
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