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https://github.com/golang/go
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6485e8f503
Partial overlaps can only happen for strict sub-pieces of larger arrays. That's a much stronger condition than the current optimization rules. Update #54467 Change-Id: I11e539b71099e50175f37ee78fddf69283f83ee5 Reviewed-on: https://go-review.googlesource.com/c/go/+/433056 TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: David Chase <drchase@google.com> Run-TryBot: Keith Randall <khr@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
60 lines
949 B
Go
60 lines
949 B
Go
// asmcheck
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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 codegen
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func f1(x *[4]int, y *[4]int) {
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// amd64:".*memmove"
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*x = *y
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}
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func f2(x *[4]int, y [4]int) {
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// amd64:-".*memmove"
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*x = y
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}
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func f3(x *[4]int, y *[4]int) {
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// amd64:-".*memmove"
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t := *y
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// amd64:-".*memmove"
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*x = t
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}
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func f4(x *[4]int, y [4]int) {
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// amd64:-".*memmove"
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t := y
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// amd64:-".*memmove"
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*x = t
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}
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type T struct {
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a [4]int
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}
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func f5(x, y *T) {
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// amd64:-".*memmove"
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x.a = y.a
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}
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func f6(x *T, y T) {
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// amd64:-".*memmove"
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x.a = y.a
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}
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func f7(x *T, y *[4]int) {
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// amd64:-".*memmove"
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x.a = *y
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}
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func f8(x *[4]int, y *T) {
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// amd64:-".*memmove"
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*x = y.a
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}
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func f9(x [][4]int, y [][4]int, i, j int) {
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// amd64:-".*memmove"
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x[i] = y[j]
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}
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func f10() []byte {
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// amd64:-".*memmove"
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return []byte("aReasonablyBigTestString")
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}
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