// run | |
// Copyright 2022 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. | |
// Issue 50671: sign extension eliminated incorrectly on MIPS64. | |
package main | |
//go:noinline | |
func F(x int32) (float64, int64) { | |
a := float64(x) | |
b := int64(x) | |
return a, b | |
} | |
var a, b, c float64 | |
// Poison some floating point registers with non-zero high bits. | |
// | |
//go:noinline | |
func poison(x float64) { | |
a = x - 123.45 | |
b = a * 1.2 | |
c = b + 3.4 | |
} | |
func main() { | |
poison(333.3) | |
_, b := F(123) | |
if b != 123 { | |
panic("FAIL") | |
} | |
} |