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// Copyright 2016 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. //go:build !purego #include "textflag.h" // func addMulVVW1024(z, x *uint, y uint) (c uint) TEXT ·addMulVVW1024(SB), $0-32 MOVD $16, R5 JMP addMulVVWx(SB) // func addMulVVW1536(z, x *uint, y uint) (c uint) TEXT ·addMulVVW1536(SB), $0-32 MOVD $24, R5 JMP addMulVVWx(SB) // func addMulVVW2048(z, x *uint, y uint) (c uint) TEXT ·addMulVVW2048(SB), $0-32 MOVD $32, R5 JMP addMulVVWx(SB) TEXT addMulVVWx(SB), NOFRAME|NOSPLIT, $0 MOVD z+0(FP), R2 MOVD x+8(FP), R8 MOVD y+16(FP), R9 MOVD $0, R1 // i*8 = 0 MOVD $0, R7 // i = 0 MOVD $0, R0 // make sure it's zero MOVD $0, R4 // c = 0 MOVD R5, R12 AND $-2, R12 CMPBGE R5, $2, A6 BR E6 A6: MOVD (R8)(R1*1), R6 MULHDU R9, R6 MOVD (R2)(R1*1), R10 ADDC R10, R11 // add to low order bits ADDE R0, R6 ADDC R4, R11 ADDE R0, R6 MOVD R6, R4 MOVD R11, (R2)(R1*1) MOVD (8)(R8)(R1*1), R6 MULHDU R9, R6 MOVD (8)(R2)(R1*1), R10 ADDC R10, R11 // add to low order bits ADDE R0, R6 ADDC R4, R11 ADDE R0, R6 MOVD R6, R4 MOVD R11, (8)(R2)(R1*1) ADD $16, R1 // i*8 + 8 ADD $2, R7 // i++ CMPBLT R7, R12, A6 BR E6 L6: // TODO: drop unused single-step loop. MOVD (R8)(R1*1), R6 MULHDU R9, R6 MOVD (R2)(R1*1), R10 ADDC R10, R11 // add to low order bits ADDE R0, R6 ADDC R4, R11 ADDE R0, R6 MOVD R6, R4 MOVD R11, (R2)(R1*1) ADD $8, R1 // i*8 + 8 ADD $1, R7 // i++ E6: CMPBLT R7, R5, L6 // i < n MOVD R4, c+24(FP) RET