Added LongJump for bailout. When trying to fix all crashes, CHECK_ALIVE did not scale well as bail…

runtime/vm/flow_graph_builder.h

Index: runtime/vm/flow_graph_builder.h
===================================================================
--- runtime/vm/flow_graph_builder.h	(revision 4539)
+++ runtime/vm/flow_graph_builder.h	(working copy)
@@ -20,25 +20,17 @@
  public:
   explicit FlowGraphBuilder(const ParsedFunction& parsed_function)
       : parsed_function_(parsed_function),
-        bailout_reason_(NULL),
         postorder_block_entries_() { }
 
   void BuildGraph();
 
   const ParsedFunction& parsed_function() const { return parsed_function_; }
 
-  bool HasBailedOut() const { return bailout_reason_ != NULL; }
-  void Bailout(const char* reason) {
-    // Cannot give a NULL reason because we use it to detect bailout.
-    ASSERT(!HasBailedOut() && (reason != NULL));
-    bailout_reason_ = reason;
-  }
-  void TraceBailout() const;
+  void Bailout(const char* reason);
   void PrintGraph() const;
 
  private:
   const ParsedFunction& parsed_function_;
-  const char* bailout_reason_;
   GrowableArray<Instruction*> postorder_block_entries_;
 };
 
@@ -97,6 +89,7 @@
   // Implement the core part of the translation of expression node types.
   AssertAssignableComp* TranslateAssignable(const AssignableNode& node);
   InstanceCallComp* TranslateBinaryOp(const BinaryOpNode& node);
+  InstanceCallComp* TranslateUnaryOp(const UnaryOpNode& node);
   InstanceCallComp* TranslateComparison(const ComparisonNode& node);
   StoreLocalComp* TranslateStoreLocal(const StoreLocalNode& node);
   StaticCallComp* TranslateStaticCall(const StaticCallNode& node);