go issue5809 源码

  • 2022-07-15
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golang issue5809 代码


// run

// Copyright 2013 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.

// issue 5809: 6g and 8g attempted to constant propagate indexed LEA

package main

import "fmt"

func main() {
	const d16 = "0123456789ABCDEF"
	k := 0x1234
	var x [4]byte
	x[0] = d16[k>>12&0xf]
	x[1] = d16[k>>8&0xf]
	x[2] = d16[k>>4&0xf]
	x[3] = d16[k&0xf]
	if x != [4]byte{'1','2','3','4'} {
		panic("x != [4]byte{'1','2','3','4'}")


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