Introduce a code stub version of Array.prototype.push

src/x87/code-stubs-x87.cc

Index: src/x87/code-stubs-x87.cc
diff --git a/src/x87/code-stubs-x87.cc b/src/x87/code-stubs-x87.cc
index 1c6820f89b841d726208610d64bffeff4f4a5f7b..b110aa9bdadd67476a9e9acc0c1d8ee0e830a64f 100644
--- a/src/x87/code-stubs-x87.cc
+++ b/src/x87/code-stubs-x87.cc
@@ -85,6 +85,10 @@ void InternalArrayNoArgumentConstructorStub::InitializeDescriptor(
   InitializeInternalArrayConstructorDescriptor(isolate(), descriptor, 0);
 }
 
+void FastArrayPushStub::InitializeDescriptor(CodeStubDescriptor* descriptor) {
+  Address deopt_handler = Runtime::FunctionForId(Runtime::kArrayPush)->entry;
+  descriptor->Initialize(eax, deopt_handler, -1, JS_FUNCTION_STUB_MODE);
+}
 
 void InternalArraySingleArgumentConstructorStub::InitializeDescriptor(
     CodeStubDescriptor* descriptor) {