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c1050a8e54
Emit &runtime.zerobase instead of a call to newobject for allocations of zero sized objects in walk.go. Fixes #29446 Change-Id: I11b67981d55009726a17c2e582c12ce0c258682e Reviewed-on: https://go-review.googlesource.com/c/155840 Run-TryBot: Iskander Sharipov <quasilyte@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> Reviewed-by: Keith Randall <khr@golang.org>
34 lines
902 B
Go
34 lines
902 B
Go
// asmcheck
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// Copyright 2018 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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// These tests check that allocating a 0-size object does not
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// introduce a call to runtime.newobject.
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package codegen
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func zeroAllocNew1() *struct{} {
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// 386:-`CALL\truntime\.newobject`
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// amd64:-`CALL\truntime\.newobject`
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// arm:-`CALL\truntime\.newobject`
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// arm64:-`CALL\truntime\.newobject`
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return new(struct{})
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}
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func zeroAllocNew2() *[0]int {
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// 386:-`CALL\truntime\.newobject`
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// amd64:-`CALL\truntime\.newobject`
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// arm:-`CALL\truntime\.newobject`
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// arm64:-`CALL\truntime\.newobject`
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return new([0]int)
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}
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func zeroAllocSliceLit() []int {
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// 386:-`CALL\truntime\.newobject`
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// amd64:-`CALL\truntime\.newobject`
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// arm:-`CALL\truntime\.newobject`
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// arm64:-`CALL\truntime\.newobject`
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return []int{}
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}
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