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cmd/compile: support reading union type for compiler backend in unified IR
Fixes #52124 Change-Id: I5749822d41d8e51f476bceb277b1d2cf7350dcc3 Reviewed-on: https://go-review.googlesource.com/c/go/+/397874 Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com> Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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@ -442,9 +442,21 @@ func (r *reader) doTyp() *types.Type {
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return r.structType()
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case pkgbits.TypeInterface:
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return r.interfaceType()
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case pkgbits.TypeUnion:
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return r.unionType()
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}
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}
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func (r *reader) unionType() *types.Type {
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terms := make([]*types.Type, r.Len())
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tildes := make([]bool, len(terms))
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for i := range terms {
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tildes[i] = r.Bool()
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terms[i] = r.typ()
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}
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return types.NewUnion(terms, tildes)
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}
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func (r *reader) interfaceType() *types.Type {
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tpkg := types.LocalPkg // TODO(mdempsky): Remove after iexport is gone.
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9
test/typeparam/issue52124.go
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9
test/typeparam/issue52124.go
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@ -0,0 +1,9 @@
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// compile
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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 p
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type I interface{ any | int }
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