mirror of
https://github.com/golang/go
synced 2024-11-25 06:27:57 -07:00
b60bf8f8e1
Right shifts, for some odd reasons, can encode shifts of constant 1-32 instead of 0-31. Left shifts, however, can encode shifts 0-31. When the shift amount is 0, arm recommends encoding right shifts using left shifts. Fixes #64715 Change-Id: Id3825349aa7195028037893dfe01fa0e405eaa51 Reviewed-on: https://go-review.googlesource.com/c/go/+/549955 Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com>
26 lines
401 B
Go
26 lines
401 B
Go
// run
|
|
|
|
// Copyright 2023 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.
|
|
|
|
package main
|
|
|
|
func boolInt32(b bool) int32 {
|
|
if b {
|
|
return 1
|
|
}
|
|
|
|
return 0
|
|
}
|
|
|
|
func f(left uint16, right int32) (r uint16) {
|
|
return left >> right
|
|
}
|
|
|
|
var n = uint16(65535)
|
|
|
|
func main() {
|
|
println(f(n, boolInt32(int64(n^n) > 1)))
|
|
}
|