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For instructions which clobber their input register, we make a second copy of the input value so it is still available in a register for future instructions. That second copy might not respect the register input restrictions for the instruction. So the second copy we make here can't actually be used by the instruction - it should use the first copy, the second copy is the one that will persist beyond the clobber. Fixes #75063 Change-Id: I99acdc63f0c4e54567a174ff7ada601ae4e796b7 Reviewed-on: https://go-review.googlesource.com/c/go/+/697015 Auto-Submit: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: David Chase <drchase@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
76 lines
1.4 KiB
Go
76 lines
1.4 KiB
Go
// compile
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// Copyright 2025 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 reorder
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type Element struct {
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A string
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B string
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C string
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D string
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E string
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Text []string
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List []string
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Child Elements
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F string
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G bool
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H bool
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I string
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}
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type Elements []Element
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func DoesNotCompile(ve Elements) Elements {
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aa := Elements{}
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bb := Elements{}
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cc := Elements{}
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dd := Elements{}
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ee := Elements{}
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ff := Elements{}
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gg := Elements{}
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hh := Elements{}
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ii := Elements{}
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if len(ve) != 1 {
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return ve
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}
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for _, e := range ve[0].Child {
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if len(e.Text) == 1 && (e.Text[0] == "xx") {
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ee = append(ee, e)
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} else if len(e.Text) == 1 && e.Text[0] == "yy" {
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for _, c := range e.Child {
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if len(c.Text) == 1 && c.Text[0] == "zz" {
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ii = append(ii, c)
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} else {
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hh = append(hh, c)
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}
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}
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ii = append(ii, hh...)
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e.Child = ii
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gg = append(gg, e)
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} else if len(e.Text) == 1 && e.Text[0] == "tt" {
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for _, entry := range e.Child {
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for _, c := range entry.Child {
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if len(c.Text) == 1 && c.Text[0] == "ee" {
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cc = append(cc, c)
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} else {
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dd = append(dd, c)
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}
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}
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cc = append(cc, dd...)
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entry.Child = cc
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bb = append(bb, entry)
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cc, dd = Elements{}, Elements{}
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}
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e.Child = bb
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aa = append(aa, e)
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} else {
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ff = append(ff, e)
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}
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}
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return ve
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}
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