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90a11e921b
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>
30 lines
600 B
Go
30 lines
600 B
Go
// run
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// Copyright 2022 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Issue 52788: miscompilation for boolean ops on ARM64.
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package main
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import (
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"fmt"
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"reflect"
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"os"
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)
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func f(next func() bool) {
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for b := next(); b; b = next() {
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fmt.Printf("%v\n", b)
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os.Exit(0)
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}
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}
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func main() {
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next := reflect.MakeFunc(reflect.TypeOf((func() bool)(nil)), func(_ []reflect.Value) []reflect.Value {
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return []reflect.Value{reflect.ValueOf(true)}
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})
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reflect.ValueOf(f).Call([]reflect.Value{next})
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}
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