Implement type cast in the VM.

runtime/vm/code_generator_ia32.cc

Index: runtime/vm/code_generator_ia32.cc
===================================================================
--- runtime/vm/code_generator_ia32.cc	(revision 9048)
+++ runtime/vm/code_generator_ia32.cc	(working copy)
@@ -1879,7 +1879,7 @@
   node->left()->Visit(this);
 
   // The instanceof operator needs special handling.
-  if (Token::IsInstanceofOperator(node->kind())) {
+  if (Token::IsTypeTestOperator(node->kind())) {
     __ popl(EAX);  // Left operand.
     ASSERT(node->right()->IsTypeNode());
     GenerateInstanceOf(node->id(),
@@ -1893,6 +1893,11 @@
     return;
   }
 
+  if (Token::IsTypeCastOperator(node->kind())) {
+    // This code generator is not maintained anymore.
+    UNIMPLEMENTED();
+  }
+
   node->right()->Visit(this);
   // Both left and right values on stack.