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That way we don't need to call into the runtime for every type assertion (to an interface type). name old time/op new time/op delta TypeAssert-24 3.78ns ± 3% 1.00ns ± 1% -73.53% (p=0.000 n=10+8) Change-Id: I0ba308aaf0f24a5495b4e13c814d35af0c58bfde Reviewed-on: https://go-review.googlesource.com/c/go/+/529316 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
27 lines
621 B
Go
27 lines
621 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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type I interface{ M() }
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func NopConvertIface(x I) I {
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// amd64:-`.*runtime.convI2I`
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return I(x)
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}
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func NopConvertGeneric[T any](x T) T {
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// amd64:-`.*runtime.convI2I`
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return T(x)
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}
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var NopConvertGenericIface = NopConvertGeneric[I]
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func ConvToM(x any) I {
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// amd64:`CALL\truntime.typeAssert`,`MOVL\t16\(.*\)`,`MOVQ\t8\(.*\)(.*\*1)`
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// arm64:`CALL\truntime.typeAssert`,`LDAR`,`MOVWU`,`MOVD\t\(R.*\)\(R.*\)`
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return x.(I)
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}
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