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https://github.com/golang/go
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7e2487cf65
If the expression type is a single compile-time known type, use that type instead of the dynamic one, so the later passes of the compiler could skip un-necessary runtime calls. Thanks Youlin Feng for writing the original test case. Change-Id: I3f65ab90f041474a9731338a82136c1d394c1773 Reviewed-on: https://go-review.googlesource.com/c/go/+/616975 Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Cherry Mui <cherryyz@google.com>
48 lines
712 B
Go
48 lines
712 B
Go
// asmcheck
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// Copyright 2024 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 Ix interface {
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X()
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}
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type Iy interface {
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Y()
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}
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type Iz interface {
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Z()
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}
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func swXYZ(a Ix) {
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switch t := a.(type) {
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case Iy: // amd64:-".*typeAssert"
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t.Y()
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case Iz: // amd64:-".*typeAssert"
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t.Z()
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}
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}
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type Ig[T any] interface {
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G() T
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}
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func swGYZ[T any](a Ig[T]) {
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switch t := a.(type) {
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case Iy: // amd64:-".*typeAssert"
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t.Y()
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case Iz: // amd64:-".*typeAssert"
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t.Z()
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case interface{ G() T }: // amd64:-".*typeAssert",".*assertE2I"
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t.G()
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}
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}
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func swCaller() {
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swGYZ[int]((Ig[int])(nil))
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}
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