cps-ir: Set runtime type information for new objects that require it.

pkg/compiler/lib/src/cps_ir/cps_ir_nodes_sexpr.dart

Index: pkg/compiler/lib/src/cps_ir/cps_ir_nodes_sexpr.dart
diff --git a/pkg/compiler/lib/src/cps_ir/cps_ir_nodes_sexpr.dart b/pkg/compiler/lib/src/cps_ir/cps_ir_nodes_sexpr.dart
index 34cd076d3c0941f0a6eec0baa1e8520d82735286..159f1502c793825c6e6a83b48ea6768624391a17 100644
--- a/pkg/compiler/lib/src/cps_ir/cps_ir_nodes_sexpr.dart
+++ b/pkg/compiler/lib/src/cps_ir/cps_ir_nodes_sexpr.dart
@@ -198,15 +198,28 @@ class SExpressionStringifier extends Indentation implements Visitor<String> {
   }
 
   String visitInvokeConstructor(InvokeConstructor node) {
+    String className;
+    // TODO(karlklose): for illegal nodes constructed for tests or unresolved
+    // cosntructor calls in the DartBackend, we get an element with no enclosing
+    // class.  Clean this up by introducing a name field to the node and
+    // removing [ErroneousElement]s from the IR.
+    if (node.type != null) {
+      className = node.type.toString();
+    } else {
+      className = node.target.enclosingClass.name;
+    }
     String callName;
     if (node.target.name.isEmpty) {
-      callName = '${node.type}';
+      callName = '${className}';
     } else {
-      callName = '${node.type}.${node.target.name}';
+      callName = '${className}.${node.target.name}';
     }
     String cont = access(node.continuation);
     String args = formatArguments(node);
-    return '$indentation(InvokeConstructor $callName $args $cont)';
+    String typeArguments = node.typeArguments.isEmpty ? ''
+        : ' <${node.typeArguments.map(access).join(', ')}>';
+    return '$indentation(InvokeConstructor $callName $args$typeArguments'
+        ' $cont)';
   }
 
   String visitConcatenateStrings(ConcatenateStrings node) {
@@ -338,6 +351,12 @@ class SExpressionStringifier extends Indentation implements Visitor<String> {
   String visitReadTypeVariable(ReadTypeVariable node) {
     return '(ReadTypeVariable ${access(node.target)}.${node.variable})';
   }
+
+  @override
+  String visitTypeExpression(TypeExpression node) {
+    String args = node.arguments.map(access).join(', ');
+    return '(TypeExpression ${node.dartType.toString()} $args)';

[asgerf, 2015/03/18 10:18:06]

Redundant toString call

+  }
 }
 
 class ConstantStringifier extends ConstantValueVisitor<String, Null> {