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go/test/fixedbugs/issue52788a.go
Cherry Mui 90a11e921b cmd/compile: more fix on boolean ops on ARM64
Following CL 405114, the extension rule is also wrong. It is safe
to drop the extension if the value is from a boolean-generating
instruction, but not a boolean-typed Value in general (e.g. a Phi
or a in-register parameter). Fix it.

Updates #52788.

Change-Id: Icf3028fe8e90806f9f57fbe2b38d47da27a97e2a
Reviewed-on: https://go-review.googlesource.com/c/go/+/405115
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-05-09 17:29:53 +00:00

30 lines
600 B
Go

// 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 52788: miscompilation for boolean ops on ARM64.
package main
import (
"fmt"
"reflect"
"os"
)
func f(next func() bool) {
for b := next(); b; b = next() {
fmt.Printf("%v\n", b)
os.Exit(0)
}
}
func main() {
next := reflect.MakeFunc(reflect.TypeOf((func() bool)(nil)), func(_ []reflect.Value) []reflect.Value {
return []reflect.Value{reflect.ValueOf(true)}
})
reflect.ValueOf(f).Call([]reflect.Value{next})
}