Generate the TransitionElementsStub using Crankshaft

src/x64/code-stubs-x64.cc

Index: src/x64/code-stubs-x64.cc
diff --git a/src/x64/code-stubs-x64.cc b/src/x64/code-stubs-x64.cc
index 109fcfcd4085c6a12f7cf24432764e062b447803..31de01b9a3e99008c89cf1908a0eea6a9b4997a1 100644
--- a/src/x64/code-stubs-x64.cc
+++ b/src/x64/code-stubs-x64.cc
@@ -33,6 +33,7 @@
 #include "code-stubs.h"
 #include "regexp-macro-assembler.h"
 #include "stub-cache.h"
+#include "runtime.h"
 
 namespace v8 {
 namespace internal {
@@ -49,6 +50,17 @@ void KeyedLoadFastElementStub::InitializeInterfaceDescriptor(
 }
 
 
+void TransitionElementsKindStub::InitializeInterfaceDescriptor(
+    Isolate* isolate,
+    CodeStubInterfaceDescriptor* descriptor) {
+  static Register registers[] = { rax, rbx };
+  descriptor->register_param_count_ = 2;
+  descriptor->register_params_ = registers;
+  descriptor->deoptimization_handler_ =
+      Runtime::FunctionForId(Runtime::kTransitionElementsKind)->entry;
+}
+
+
 #define __ ACCESS_MASM(masm)
 
 void ToNumberStub::Generate(MacroAssembler* masm) {