1 // +build !386 2 // run 3 4 // Copyright 2015 The Go Authors. All rights reserved. 5 // Use of this source code is governed by a BSD-style 6 // license that can be found in the LICENSE file. 7 8 // Issue 12411. Loss of AX during %. 9 10 package main 11 12 func main() { 13 x := f(4) 14 if x != 0 { 15 println("BUG: x=", x) 16 } 17 } 18 19 //go:noinline 20 func f(x int) int { 21 // AX was live on entry to one of the % code generations, 22 // and the % code generation smashed it. 23 return ((2 * x) % 3) % (2 % ((x << 2) ^ (x % 3))) 24 } 25
