go issue887 源码
golang issue887 代码
文件路径：/test/fixedbugs/issue887.go
// compile
// 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.
// Used to leak registers on 8g.
package p
func f(x byte, y uint64) {
var r byte
switch y {
case 1:
r = x << y // '>>' triggers it too
case 2:
r = x << y
case 3:
r = x << y
case 4:
r = x << y
case 5:
r = x << y
case 6:
r = x << y
case 7:
r = x << y
case 8:
r = x << y
case 9:
r = x << y
case 10:
r = x << y
}
_ = r
}
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