Compile FastCloneShallowObjectStub using Crankshaft.

src/hydrogen.h

Index: src/hydrogen.h
diff --git a/src/hydrogen.h b/src/hydrogen.h
index e9b8a2fa836c01e2316a3c884614c497657b7709..8b278b21b504d64f852fb30e0b4ee19db5d8afcc 100644
--- a/src/hydrogen.h
+++ b/src/hydrogen.h
@@ -912,6 +912,28 @@ class HGraphBuilder {
   HInstruction* BuildStoreMap(HValue* object, HValue* map, BailoutId id);
   HInstruction* BuildStoreMap(HValue* object, Handle<Map> map, BailoutId id);
 
+  class CheckBuilder {
+   public:
+    CheckBuilder(HGraphBuilder* builder,
+                 BailoutId id = BailoutId::StubEntry());
+    ~CheckBuilder() {
+      if (!finished_) End();
+    }
+
+    void CheckNotUndefined(HValue* value);
+    void CheckIntegerEq(HValue* left, HValue* right);
+    void End();
+
+   private:
+    HGraphBuilder* builder_;
+    bool finished_;
+    HBasicBlock* failure_block_;
+    HBasicBlock* merge_block_;
+    BailoutId id_;
+
+    Zone* zone() { return builder_->zone(); }

[Jakob Kummerow, 2013/02/08 12:45:49]

nit: methods before properties

[Michael Starzinger, 2013/02/11 12:13:22]

Done (also for the other builders below).

+  };
+
   class IfBuilder {
    public:
     IfBuilder(HGraphBuilder* builder,