Introduce a code stub version of Array.prototype.push

src/mips/code-stubs-mips.cc

Index: src/mips/code-stubs-mips.cc
diff --git a/src/mips/code-stubs-mips.cc b/src/mips/code-stubs-mips.cc
index 22c787ead9dcfcdaa6bfd979bd62020c807f7228..04017b4a7c18cba3ac82821822b70183a84a8b4d 100644
--- a/src/mips/code-stubs-mips.cc
+++ b/src/mips/code-stubs-mips.cc
@@ -77,6 +77,10 @@ void InternalArrayNoArgumentConstructorStub::InitializeDescriptor(
   InitializeInternalArrayConstructorDescriptor(isolate(), descriptor, 0);
 }
 
+void FastArrayPushStub::InitializeDescriptor(CodeStubDescriptor* descriptor) {
+  Address deopt_handler = Runtime::FunctionForId(Runtime::kArrayPush)->entry;
+  descriptor->Initialize(a0, deopt_handler, -1, JS_FUNCTION_STUB_MODE);
+}
 
 void InternalArraySingleArgumentConstructorStub::InitializeDescriptor(
     CodeStubDescriptor* descriptor) {