[builtins] Migrate DatePrototype_GetField to TurboFan builtin.

src/builtins/s390/builtins-s390.cc

Index: src/builtins/s390/builtins-s390.cc
diff --git a/src/builtins/s390/builtins-s390.cc b/src/builtins/s390/builtins-s390.cc
index 69f5634f248f4de8998a5a96db619cb8dbfdb681..c4fb210c52ba638c41dede06956e188babf69620 100644
--- a/src/builtins/s390/builtins-s390.cc
+++ b/src/builtins/s390/builtins-s390.cc
@@ -1886,72 +1886,6 @@ void Builtins::Generate_InterpreterOnStackReplacement(MacroAssembler* masm) {
 }
 
 // static
-void Builtins::Generate_DatePrototype_GetField(MacroAssembler* masm,
-                                               int field_index) {
-  // ----------- S t a t e -------------
-  //  -- r2    : number of arguments
-  //  -- r3    : function
-  //  -- cp    : context
-
-  //  -- lr    : return address
-  //  -- sp[0] : receiver
-  // -----------------------------------
-
-  // 1. Pop receiver into r2 and check that it's actually a JSDate object.
-  Label receiver_not_date;
-  {
-    __ Pop(r2);
-    __ JumpIfSmi(r2, &receiver_not_date);
-    __ CompareObjectType(r2, r4, r5, JS_DATE_TYPE);
-    __ bne(&receiver_not_date);
-  }
-
-  // 2. Load the specified date field, falling back to the runtime as necessary.
-  if (field_index == JSDate::kDateValue) {
-    __ LoadP(r2, FieldMemOperand(r2, JSDate::kValueOffset));
-  } else {
-    if (field_index < JSDate::kFirstUncachedField) {
-      Label stamp_mismatch;
-      __ mov(r3, Operand(ExternalReference::date_cache_stamp(masm->isolate())));
-      __ LoadP(r3, MemOperand(r3));
-      __ LoadP(ip, FieldMemOperand(r2, JSDate::kCacheStampOffset));
-      __ CmpP(r3, ip);
-      __ bne(&stamp_mismatch);
-      __ LoadP(r2, FieldMemOperand(
-                       r2, JSDate::kValueOffset + field_index * kPointerSize));
-      __ Ret();
-      __ bind(&stamp_mismatch);
-    }
-    FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
-    __ PrepareCallCFunction(2, r3);
-    __ LoadSmiLiteral(r3, Smi::FromInt(field_index));
-    __ CallCFunction(
-        ExternalReference::get_date_field_function(masm->isolate()), 2);
-  }
-  __ Ret();
-
-  // 3. Raise a TypeError if the receiver is not a date.
-  __ bind(&receiver_not_date);
-  {
-    FrameScope scope(masm, StackFrame::MANUAL);
-    __ push(r2);
-    __ LoadSmiLiteral(r2, Smi::FromInt(0));
-    __ EnterBuiltinFrame(cp, r3, r2);
-    __ CallRuntime(Runtime::kThrowNotDateError);
-
-    // It's far from obvious, but this final trailing instruction after the call
-    // is required for StackFrame::LookupCode to work correctly. To illustrate
-    // why: if call were the final instruction in the code object, then the pc
-    // (== return address) would point beyond the code object when the stack is
-    // traversed. When we then try to look up the code object through
-    // StackFrame::LookupCode, we actually return the next code object that
-    // happens to be on the same page in memory.
-    // TODO(jgruber): A proper fix for this would be nice.
-    __ nop();
-  }
-}
-
-// static
 void Builtins::Generate_FunctionPrototypeApply(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- r2    : argc