blob: addb872781aa472714ab1fd0e20e5010f2b1e1dc [file] [log] [blame] [edit]
// run
// Copyright 2015 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
// Make sure the compiler knows that DUFFCOPY clobbers X0
import "fmt"
//go:noinline
func f(x float64) float64 {
// y is allocated to X0
y := x + 5
// marshals z before y. Marshaling z
// calls DUFFCOPY.
return g(z, y)
}
//go:noinline
func g(b [64]byte, y float64) float64 {
return y
}
var z [64]byte
func main() {
got := f(5)
if got != 10 {
panic(fmt.Sprintf("want 10, got %f", got))
}
}