mirror of
https://github.com/golang/go
synced 2024-09-30 16:28:32 -06:00
e97ab0a0ac
The reg[] array in .../gc is where truth lies. The copy in .../ARCH is incorrect as it is mostly not updated to reflect regalloc decisions. This bug was introduced in the rewrite https://go-review.googlesource.com/#/c/7853/. The new reg[] array was introduced in .../gc but not all of the uses were removed in the .../ARCH directories. Fixes #12133 Change-Id: I6364fc403cdab92d802d17f2913ba1607734037c Reviewed-on: https://go-review.googlesource.com/13630 Reviewed-by: Russ Cox <rsc@golang.org>
27 lines
541 B
Go
27 lines
541 B
Go
// 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.
|
|
|
|
// Issue 12133. The CX register was getting clobbered
|
|
// because we did not keep track of its allocation correctly.
|
|
|
|
package main
|
|
|
|
import "fmt"
|
|
|
|
func main() {
|
|
want := uint(48)
|
|
got := f1(48)
|
|
if got != want {
|
|
fmt.Println("got", got, ", wanted", want)
|
|
panic("bad")
|
|
}
|
|
}
|
|
func f1(v1 uint) uint {
|
|
switch {
|
|
} // prevent inlining
|
|
return v1 >> ((1 >> v1) + (1 >> v1))
|
|
}
|