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Source file test/fixedbugs/issue12133.go

Documentation: test/fixedbugs

     1  // run
     2  
     3  // Copyright 2015 The Go Authors. All rights reserved.
     4  // Use of this source code is governed by a BSD-style
     5  // license that can be found in the LICENSE file.
     6  
     7  // Issue 12133.  The CX register was getting clobbered
     8  // because we did not keep track of its allocation correctly.
     9  
    10  package main
    11  
    12  import "fmt"
    13  
    14  func main() {
    15  	want := uint(48)
    16  	got := f1(48)
    17  	if got != want {
    18  		fmt.Println("got", got, ", wanted", want)
    19  		panic("bad")
    20  	}
    21  }
    22  
    23  //go:noinline
    24  func f1(v1 uint) uint {
    25  	return v1 >> ((1 >> v1) + (1 >> v1))
    26  }
    27  

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