u.node(node.X)
		u.node(node.Y)
	case *ast.StarExpr:
		u.node(node.X)
	case *ast.ParenExpr:
		u.node(node.X)
	case *ast.IndexExpr:
		u.node(node.X)
		u.node(node.Index)
	case *ast.TypeAssertExpr:
		u.node(node.X)
		u.node(node.Type)
	case *ast.Ident:
		if obj := u.scope.Lookup(node.Name); obj != nil {
			obj.numUses++
			if u.defining != nil {
				u.defining.used = append(u.defining.used, obj)

		{"SwitchStmt.Init", Field, 0},
		{"SwitchStmt.Switch", Field, 0},
		{"SwitchStmt.Tag", Field, 0},
		{"Typ", Const, 0},
		{"TypeAssertExpr", Type, 0},
		{"TypeAssertExpr.Lparen", Field, 2},
		{"TypeAssertExpr.Rparen", Field, 2},
		{"TypeAssertExpr.Type", Field, 0},
		{"TypeAssertExpr.X", Field, 0},
		{"TypeSpec", Type, 0},
		{"TypeSpec.Assign", Field, 9},
		{"TypeSpec.Comment", Field, 0},

			p.expr0(x.X, reduceDepth(depth)) // parentheses undo one level of depth
			p.setPos(x.Rparen)
			p.print(token.RPAREN)
		}

	case *ast.SelectorExpr:
		p.selectorExpr(x, depth, false)

	case *ast.TypeAssertExpr:
		p.expr1(x.X, token.HighestPrec, depth)
		p.print(token.PERIOD)
		p.setPos(x.Lparen)
		p.print(token.LPAREN)
		if x.Type != nil {
			p.expr(x.Type)
		} else {
			p.print(token.TYPE)
		}

		s.callResult(n.Call.(*ir.CallExpr), callGo)

	case ir.OAS2DOTTYPE:
		n := n.(*ir.AssignListStmt)
		var res, resok *ssa.Value
		if n.Rhs[0].Op() == ir.ODOTTYPE2 {
			res, resok = s.dottype(n.Rhs[0].(*ir.TypeAssertExpr), true)
		} else {
			res, resok = s.dynamicDottype(n.Rhs[0].(*ir.DynamicTypeAssertExpr), true)
		}
		deref := false
		if !ssa.CanSSA(n.Rhs[0].Type()) {
			if res.Op != ssa.OpLoad {

pkg go/ast, type SwitchStmt struct, Init Stmt
pkg go/ast, type SwitchStmt struct, Switch token.Pos
pkg go/ast, type SwitchStmt struct, Tag Expr
pkg go/ast, type TypeAssertExpr struct
pkg go/ast, type TypeAssertExpr struct, Type Expr
pkg go/ast, type TypeAssertExpr struct, X Expr
pkg go/ast, type TypeSpec struct
pkg go/ast, type TypeSpec struct, Comment *CommentGroup
pkg go/ast, type TypeSpec struct, Doc *CommentGroup

pkg flag, type Getter interface, String() string
pkg flag, var CommandLine *FlagSet
pkg go/ast, type SliceExpr struct, Max Expr
pkg go/ast, type SliceExpr struct, Slice3 bool
pkg go/ast, type TypeAssertExpr struct, Lparen token.Pos
pkg go/ast, type TypeAssertExpr struct, Rparen token.Pos
pkg go/build, method (*Context) MatchFile(string, string) (bool, error)
pkg go/build, type Package struct, AllTags []string