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https://github.com/golang/go
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e8f78cb60c
ARM64 maintains booleans in the low byte of registers. Upper parts of that register are junk. This rule is using all 32 bits of a boolean-containing register, which is wrong. Change the rule to only look at the low bit. Fixes #57184 Change-Id: Ibbef86b2be859df3d06d993db00e1231c481c428 Reviewed-on: https://go-review.googlesource.com/c/go/+/456556 Auto-Submit: Keith Randall <khr@golang.org> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Keith Randall <khr@golang.org> Run-TryBot: Keith Randall <khr@golang.org>
41 lines
851 B
Go
41 lines
851 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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package main
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import (
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"log"
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"reflect"
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"sort"
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)
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func main() {
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const length = 257
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x := make([]int64, length)
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for i := 0; i < length; i++ {
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x[i] = int64(i) * 27644437 % int64(length)
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}
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isLessStatic := func(i, j int) bool {
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return x[i] < x[j]
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}
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isLessReflect := reflect.MakeFunc(reflect.TypeOf(isLessStatic), func(args []reflect.Value) []reflect.Value {
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i := args[0].Int()
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j := args[1].Int()
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b := x[i] < x[j]
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return []reflect.Value{reflect.ValueOf(b)}
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}).Interface().(func(i, j int) bool)
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sort.SliceStable(x, isLessReflect)
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for i := 0; i < length-1; i++ {
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if x[i] >= x[i+1] {
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log.Fatalf("not sorted! (length=%v, idx=%v)\n%v\n", length, i, x)
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}
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}
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}
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