Add type info to JSArray.

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

Index: pkg/compiler/lib/src/cps_ir/cps_ir_tracer.dart
diff --git a/pkg/compiler/lib/src/cps_ir/cps_ir_tracer.dart b/pkg/compiler/lib/src/cps_ir/cps_ir_tracer.dart
index e07e2b8a92aa8440437de1bbac98d5bb8381669a..db1592db3216b5064fdcdb6cb4ef381eeb0ca0f7 100644
--- a/pkg/compiler/lib/src/cps_ir/cps_ir_tracer.dart
+++ b/pkg/compiler/lib/src/cps_ir/cps_ir_tracer.dart
@@ -295,8 +295,7 @@ class IRTracer extends TracerUtil implements cps_ir.Visitor {
   visitCreateInstance(cps_ir.CreateInstance node) {
     String className = node.classElement.name;
     String arguments = node.arguments.map(formatReference).join(', ');
-    String typeInformation =
-        node.typeInformation.map(formatReference).join(', ');
+    String typeInformation = formatReference(node.typeInformation);
     return 'CreateInstance $className ($arguments) <$typeInformation>';
   }
 
@@ -320,7 +319,7 @@ class IRTracer extends TracerUtil implements cps_ir.Visitor {
   }
 
   visitTypeExpression(cps_ir.TypeExpression node) {
-    return "TypeExpression ${node.dartType} "
+    return "TypeExpression ${node.kindAsString} ${node.dartType}"
         "${node.arguments.map(formatReference).join(', ')}";
   }