// Copyright (c) 2026 Petr Balvín <opensource@petrbalvin.org> (https://petrbalvin.org)
// SPDX-License-Identifier: BSD-3-Clause

// Differential kernel for the loong64 register-pair spellings: a top-level
// colon between two registers splits the operand in two with the halves
// swapped, so R4:R5 encodes exactly as R5, R4.  The integer multiply and
// divide families, the FP pair and the vector pair, each the way
// GOARCH=loong64 go tool asm takes them.

#include "textflag.h"

TEXT ·pairs(SB), NOSPLIT, $0-0
	MULV   R4 : R5, R6
	MULV   R4 : R5
	MULV   R6, R4 : R5
	DIVV   R4 : R5, R6
	DIVVU  R4 : R5, R6
	MULHV  R4 : R5, R6
	MULHVU R4 : R5, R6
	ADDV   R4 : R5, R6
	ADDW   R4 : R5, R6
	AND    R4 : R5, R6
	OR     R4 : R5, R6
	XOR    R4 : R5, R6
	MOVV   R4 : R5
	MULD   F4 : F5, F6
	VADDW  V1 : V2, V3
	RET