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

// GOROOT-derived shapes: the MOV width suffixes for narrow loads and the
// branch-zero pseudos.  Deliberately absent: the immediate ALU aliases
// (AND/SUB $imm) and the FP memory forms, whose RVC compression the encoder
// does not reproduce yet, so a parity kernel could not hold them.

#include "textflag.h"

// func mix(x int64, y int64) int64
TEXT ·mix(SB), NOSPLIT, $0-24
	MOV   x+0(FP), X5
	MOVWU 0(X5), X11
	MOVB  1(X5), X12
	MOVBU 2(X5), X13
	ADD   X11, X12, X14
	ADD   X13, X14, X15
	MOV   X15, ret+16(FP)
	RET

// func branchy(n int64) int64
TEXT ·branchy(SB), NOSPLIT, $0-16
	MOV  n+0(FP), X5
	BEQZ X5, zero
	BNEZ X5, one
	BLTZ X5, zero
	BGEZ X5, one

zero:
	MOV  $0, X6
	MOV  X6, ret+8(FP)
	RET

one:
	MOV  $1, X6
	MOV  X6, ret+8(FP)
	RET