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[dev.typeparams] cmd/compile: implement generic type switches

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Add a new dynamicType node, which is used as a case entry when
the type being switched to is generic.

Change-Id: Ice77c6f224b8fdd3ff574fdf4a8ea5f6c7ddbe75
Reviewed-on: https://go-review.googlesource.com/c/go/+/339429
Trust: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Dan Scales <danscales@google.com>
This commit is contained in:
Keith Randall 2021-08-03 08:10:17 -07:00
parent 57668b84ff
commit ca3c6985cd
21 changed files with 342 additions and 18 deletions
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4
src/cmd/compile/internal/noder/transform.go
View file

@ -313,6 +313,10 @@ assignOK:
r := r.(*ir.TypeAssertExpr)
stmt.SetOp(ir.OAS2DOTTYPE)
r.SetOp(ir.ODOTTYPE2)
case ir.ODYNAMICDOTTYPE:
r := r.(*ir.DynamicTypeAssertExpr)
stmt.SetOp(ir.OAS2DOTTYPE)
r.SetOp(ir.ODYNAMICDOTTYPE2)
default:
break assignOK
}