Turn Function.prototype.bind into a hydrogen stub optimized for the common case

src/s390/code-stubs-s390.cc

Index: src/s390/code-stubs-s390.cc
diff --git a/src/s390/code-stubs-s390.cc b/src/s390/code-stubs-s390.cc
index 4d12de0403a99e04e7b2330011f32f074d8173fc..a3913e48577bbb859d6a862f6dd6d5a88d992b3a 100644
--- a/src/s390/code-stubs-s390.cc
+++ b/src/s390/code-stubs-s390.cc
@@ -61,6 +61,12 @@ void FastArrayPushStub::InitializeDescriptor(CodeStubDescriptor* descriptor) {
   descriptor->Initialize(r2, deopt_handler, -1, JS_FUNCTION_STUB_MODE);
 }
 
+void FastFunctionBindStub::InitializeDescriptor(
+    CodeStubDescriptor* descriptor) {
+  Address deopt_handler = Runtime::FunctionForId(Runtime::kFunctionBind)->entry;
+  descriptor->Initialize(r2, deopt_handler, -1, JS_FUNCTION_STUB_MODE);
+}
+
 void InternalArrayNArgumentsConstructorStub::InitializeDescriptor(
     CodeStubDescriptor* descriptor) {
   InitializeInternalArrayConstructorDescriptor(isolate(), descriptor, -1);