39 lines
886 B
ArmAsm
39 lines
886 B
ArmAsm
// 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
|