MIPS: Reland 21774: Generate KeyedLoadGeneric with Hydrogen

Port r21781 (4869c528)

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/327373002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21784 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/mips/code-stubs-mips.cc

@@ -119,6 +119,16 @@ void RegExpConstructResultStub::InitializeInterfaceDescriptor(
 }
 
 
+void KeyedLoadGenericElementStub::InitializeInterfaceDescriptor(
+    CodeStubInterfaceDescriptor* descriptor) {
+  static Register registers[] = { a1, a0 };
+  descriptor->register_param_count_ = 2;
+  descriptor->register_params_ = registers;
+  descriptor->deoptimization_handler_ =
+      Runtime::FunctionForId(Runtime::kKeyedGetProperty)->entry;
+}
+
+
 void LoadFieldStub::InitializeInterfaceDescriptor(
     CodeStubInterfaceDescriptor* descriptor) {
   static Register registers[] = { a0 };