diff --git a/src/cmd/compile/internal/noder/decl.go b/src/cmd/compile/internal/noder/decl.go
index b7fd95e2e8..df1ca1c505 100644
--- a/src/cmd/compile/internal/noder/decl.go
+++ b/src/cmd/compile/internal/noder/decl.go
@@ -286,22 +286,26 @@ func (g *irgen) varDecl(out *ir.Nodes, decl *syntax.VarDecl) {
 				} else if ir.CurFunc == nil {
 					name.Defn = as
 				}
-				lhs := []ir.Node{as.X}
-				rhs := []ir.Node{}
-				if as.Y != nil {
-					rhs = []ir.Node{as.Y}
-				}
-				transformAssign(as, lhs, rhs)
-				as.X = lhs[0]
-				if as.Y != nil {
-					as.Y = rhs[0]
+				if !g.delayTransform() {
+					lhs := []ir.Node{as.X}
+					rhs := []ir.Node{}
+					if as.Y != nil {
+						rhs = []ir.Node{as.Y}
+					}
+					transformAssign(as, lhs, rhs)
+					as.X = lhs[0]
+					if as.Y != nil {
+						as.Y = rhs[0]
+					}
 				}
 				as.SetTypecheck(1)
 				out.Append(as)
 			}
 		}
 		if as2 != nil {
-			transformAssign(as2, as2.Lhs, as2.Rhs)
+			if !g.delayTransform() {
+				transformAssign(as2, as2.Lhs, as2.Rhs)
+			}
 			as2.SetTypecheck(1)
 			out.Append(as2)
 		}
diff --git a/test/typeparam/issue50147.go b/test/typeparam/issue50147.go
new file mode 100644
index 0000000000..2bdce6c504
--- /dev/null
+++ b/test/typeparam/issue50147.go
@@ -0,0 +1,11 @@
+// compile -G=3
+
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package p
+
+func Foo[T any, U interface{ *T }](x T) {
+	var _ U = &x
+}