// 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 }