mirror of
https://github.com/golang/go
synced 2024-11-26 19:31:17 -07:00
55 lines
1.1 KiB
Go
55 lines
1.1 KiB
Go
|
// compile
|
||
|
|
||
|
// Copyright 2020 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.
|
||
|
|
||
|
// Make sure floating point operations that generate flags
|
||
|
// are scheduled correctly on s390x.
|
||
|
|
||
|
package p
|
||
|
|
||
|
func f1(x, y float64, z int) float64 {
|
||
|
a := x + y // generate flags
|
||
|
if z == 0 { // create basic block that does not clobber flags
|
||
|
return a
|
||
|
}
|
||
|
if a > 0 { // use flags in different basic block
|
||
|
return y
|
||
|
}
|
||
|
return x
|
||
|
}
|
||
|
|
||
|
func f2(x, y float64, z int) float64 {
|
||
|
a := x - y // generate flags
|
||
|
if z == 0 { // create basic block that does not clobber flags
|
||
|
return a
|
||
|
}
|
||
|
if a > 0 { // use flags in different basic block
|
||
|
return y
|
||
|
}
|
||
|
return x
|
||
|
}
|
||
|
|
||
|
func f3(x, y float32, z int) float32 {
|
||
|
a := x + y // generate flags
|
||
|
if z == 0 { // create basic block that does not clobber flags
|
||
|
return a
|
||
|
}
|
||
|
if a > 0 { // use flags in different basic block
|
||
|
return y
|
||
|
}
|
||
|
return x
|
||
|
}
|
||
|
|
||
|
func f4(x, y float32, z int) float32 {
|
||
|
a := x - y // generate flags
|
||
|
if z == 0 { // create basic block that does not clobber flags
|
||
|
return a
|
||
|
}
|
||
|
if a > 0 { // use flags in different basic block
|
||
|
return y
|
||
|
}
|
||
|
return x
|
||
|
}
|