diff --git a/src/cmd/compile/internal/noder/expr.go b/src/cmd/compile/internal/noder/expr.go
index 3dd7737..65568f2 100644
--- a/src/cmd/compile/internal/noder/expr.go
+++ b/src/cmd/compile/internal/noder/expr.go
@@ -154,7 +154,11 @@
 
 	case *syntax.Operation:
 		if expr.Y == nil {
-			return Unary(pos, g.typ(typ), g.op(expr.Op, unOps[:]), g.expr(expr.X))
+			n := Unary(pos, g.typ(typ), g.op(expr.Op, unOps[:]), g.expr(expr.X))
+			if n.Op() == ir.OADDR && !g.delayTransform() {
+				transformAddr(n.(*ir.AddrExpr))
+			}
+			return n
 		}
 		switch op := g.op(expr.Op, binOps[:]); op {
 		case ir.OEQ, ir.ONE, ir.OLT, ir.OLE, ir.OGT, ir.OGE:
@@ -353,15 +357,27 @@
 				key = g.expr(elem.Key)
 			}
 			value := wrapname(g.pos(elem.Value), g.expr(elem.Value))
+			if value.Op() == ir.OPAREN {
+				// Make sure any PAREN node added by wrapper has a type
+				typed(value.(*ir.ParenExpr).X.Type(), value)
+			}
 			exprs[i] = ir.NewKeyExpr(g.pos(elem), key, value)
 		default:
 			exprs[i] = wrapname(g.pos(elem), g.expr(elem))
+			if exprs[i].Op() == ir.OPAREN {
+				// Make sure any PAREN node added by wrapper has a type
+				typed(exprs[i].(*ir.ParenExpr).X.Type(), exprs[i])
+			}
 		}
 	}
 
 	n := ir.NewCompLitExpr(g.pos(lit), ir.OCOMPLIT, nil, exprs)
 	typed(g.typ(typ), n)
-	return transformCompLit(n)
+	var r ir.Node = n
+	if !g.delayTransform() {
+		r = transformCompLit(n)
+	}
+	return r
 }
 
 func (g *irgen) funcLit(typ2 types2.Type, expr *syntax.FuncLit) ir.Node {
diff --git a/src/cmd/compile/internal/noder/helpers.go b/src/cmd/compile/internal/noder/helpers.go
index 83830a5..adb5a0e 100644
--- a/src/cmd/compile/internal/noder/helpers.go
+++ b/src/cmd/compile/internal/noder/helpers.go
@@ -77,10 +77,6 @@
 
 func Addr(pos src.XPos, x ir.Node) *ir.AddrExpr {
 	n := typecheck.NodAddrAt(pos, x)
-	switch x.Op() {
-	case ir.OARRAYLIT, ir.OMAPLIT, ir.OSLICELIT, ir.OSTRUCTLIT:
-		n.SetOp(ir.OPTRLIT)
-	}
 	typed(types.NewPtr(x.Type()), n)
 	return n
 }
diff --git a/src/cmd/compile/internal/noder/stencil.go b/src/cmd/compile/internal/noder/stencil.go
index 62d6a45..447fe8a 100644
--- a/src/cmd/compile/internal/noder/stencil.go
+++ b/src/cmd/compile/internal/noder/stencil.go
@@ -996,6 +996,12 @@
 			case ir.OSELECT:
 				transformSelect(m.(*ir.SelectStmt))
 
+			case ir.OCOMPLIT:
+				transformCompLit(m.(*ir.CompLitExpr))
+
+			case ir.OADDR:
+				transformAddr(m.(*ir.AddrExpr))
+
 			}
 		}
 
diff --git a/src/cmd/compile/internal/noder/transform.go b/src/cmd/compile/internal/noder/transform.go
index 9076db2..29ee601 100644
--- a/src/cmd/compile/internal/noder/transform.go
+++ b/src/cmd/compile/internal/noder/transform.go
@@ -933,7 +933,7 @@
 
 // transformCompLit transforms n to an OARRAYLIT, OSLICELIT, OMAPLIT, or
 // OSTRUCTLIT node, with any needed conversions. Corresponds to
-// typecheck.tcCompLit.
+// typecheck.tcCompLit (and includes parts corresponding to tcStructLitKey).
 func transformCompLit(n *ir.CompLitExpr) (res ir.Node) {
 	assert(n.Type() != nil && n.Typecheck() == 1)
 	lno := base.Pos
@@ -1007,12 +1007,20 @@
 				if id, ok := key.(*ir.Ident); ok && typecheck.DotImportRefs[id] != nil {
 					s = typecheck.Lookup(s.Name)
 				}
+				if types.IsExported(s.Name) && s.Pkg != types.LocalPkg {
+					// Exported field names should always have
+					// local pkg. We only need to do this
+					// adjustment for generic functions that are
+					// being transformed after being imported
+					// from another package.
+					s = typecheck.Lookup(s.Name)
+				}
 
 				// An OXDOT uses the Sym field to hold
 				// the field to the right of the dot,
 				// so s will be non-nil, but an OXDOT
 				// is never a valid struct literal key.
-				assert(!(s == nil || s.Pkg != types.LocalPkg || key.Op() == ir.OXDOT || s.IsBlank()))
+				assert(!(s == nil || key.Op() == ir.OXDOT || s.IsBlank()))
 
 				f := typecheck.Lookdot1(nil, s, t, t.Fields(), 0)
 				l := ir.NewStructKeyExpr(l.Pos(), f, kv.Value)
@@ -1027,3 +1035,11 @@
 
 	return n
 }
+
+// transformAddr corresponds to typecheck.tcAddr.
+func transformAddr(n *ir.AddrExpr) {
+	switch n.X.Op() {
+	case ir.OARRAYLIT, ir.OMAPLIT, ir.OSLICELIT, ir.OSTRUCTLIT:
+		n.SetOp(ir.OPTRLIT)
+	}
+}
diff --git a/src/cmd/compile/internal/typecheck/iexport.go b/src/cmd/compile/internal/typecheck/iexport.go
index a2ad71d..3c0b8bc 100644
--- a/src/cmd/compile/internal/typecheck/iexport.go
+++ b/src/cmd/compile/internal/typecheck/iexport.go
@@ -1746,7 +1746,17 @@
 		}
 		w.localName(n)
 
-	// case OPACK, ONONAME:
+	case ir.ONONAME:
+		w.op(ir.ONONAME)
+		// This should only be for OKEY nodes in generic functions
+		s := n.Sym()
+		w.string(s.Name)
+		w.pkg(s.Pkg)
+		if go117ExportTypes {
+			w.typ(n.Type())
+		}
+
+	// case OPACK:
 	// 	should have been resolved by typechecking - handled by default case
 
 	case ir.OTYPE:
@@ -1818,7 +1828,7 @@
 		w.typ(n.Type())
 		w.fieldList(n.List) // special handling of field names
 
-	case ir.OARRAYLIT, ir.OSLICELIT, ir.OMAPLIT:
+	case ir.OCOMPLIT, ir.OARRAYLIT, ir.OSLICELIT, ir.OMAPLIT:
 		n := n.(*ir.CompLitExpr)
 		if go117ExportTypes {
 			w.op(n.Op())
diff --git a/src/cmd/compile/internal/typecheck/iimport.go b/src/cmd/compile/internal/typecheck/iimport.go
index 01ac167..0885007 100644
--- a/src/cmd/compile/internal/typecheck/iimport.go
+++ b/src/cmd/compile/internal/typecheck/iimport.go
@@ -1368,7 +1368,11 @@
 		return ir.NewCompLitExpr(r.pos(), ir.OCOMPLIT, ir.TypeNode(r.typ()), r.fieldList())
 
 	case ir.OCOMPLIT:
-		return ir.NewCompLitExpr(r.pos(), ir.OCOMPLIT, ir.TypeNode(r.typ()), r.exprList())
+		pos := r.pos()
+		t := r.typ()
+		n := ir.NewCompLitExpr(pos, ir.OCOMPLIT, ir.TypeNode(t), r.exprList())
+		n.SetType(t)
+		return n
 
 	case ir.OARRAYLIT, ir.OSLICELIT, ir.OMAPLIT:
 		if !go117ExportTypes {
diff --git a/test/typeparam/issue48537.go b/test/typeparam/issue48537.go
new file mode 100644
index 0000000..a2dc5cf
--- /dev/null
+++ b/test/typeparam/issue48537.go
@@ -0,0 +1,21 @@
+// 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 main
+
+func main() {
+}
+
+type C interface {
+	map[int]string
+}
+
+func f[A C]() A {
+	return A{
+		1: "a",
+		2: "b",
+	}
+}