X64: Fixed bug de-tagging of smis in multiplication code.

src/x64/stub-cache-x64.cc

Index: src/x64/stub-cache-x64.cc
diff --git a/src/x64/stub-cache-x64.cc b/src/x64/stub-cache-x64.cc
index ba1399654f576a9c702d3eb5a5073c653d6d7e31..d4ef0043384e3a163fdcc3e0dcf61cb1a3079ec6 100644
--- a/src/x64/stub-cache-x64.cc
+++ b/src/x64/stub-cache-x64.cc
@@ -419,6 +419,51 @@ Object* LoadStubCompiler::CompileLoadGlobal(JSObject* object,
 }
 
 
+Object* KeyedLoadStubCompiler::CompileLoadArrayLength(String* name) {
+  UNIMPLEMENTED();
+  return NULL;
+}
+
+
+Object* KeyedLoadStubCompiler::CompileLoadCallback(String* name,
+                                                   JSObject* object,
+                                                   JSObject* holder,
+                                                   AccessorInfo* callback) {
+  UNIMPLEMENTED();
+  return NULL;
+}
+
+
+Object* KeyedLoadStubCompiler::CompileLoadConstant(String* name,
+                                                   JSObject* object,
+                                                   JSObject* holder,
+                                                   Object* callback) {
+  UNIMPLEMENTED();
+  return NULL;
+}
+
+
+Object* KeyedLoadStubCompiler::CompileLoadFunctionPrototype(String* name) {
+  UNIMPLEMENTED();
+  return NULL;
+}
+
+
+Object* KeyedLoadStubCompiler::CompileLoadInterceptor(JSObject* object,
+                                                      JSObject* holder,
+                                                      String* name) {
+  UNIMPLEMENTED();
+  return NULL;
+}
+
+
+Object* KeyedLoadStubCompiler::CompileLoadStringLength(String* name) {
+  UNIMPLEMENTED();
+  return NULL;
+}
+
+
+
 Object* StoreStubCompiler::CompileStoreCallback(JSObject* a,
                                                 AccessorInfo* b,
                                                 String* c) {