PPC/s390: [stubs] Port FastNewObjectStub to TF

src/ppc/code-stubs-ppc.cc

Index: src/ppc/code-stubs-ppc.cc
diff --git a/src/ppc/code-stubs-ppc.cc b/src/ppc/code-stubs-ppc.cc
index 48a98a7edd1bccd8d6888dbce7cdf9702ba8bcb9..aae130c01e85f2e892fc433d4be2148cc6e968b3 100644
--- a/src/ppc/code-stubs-ppc.cc
+++ b/src/ppc/code-stubs-ppc.cc
@@ -3522,122 +3522,6 @@ void InternalArrayConstructorStub::Generate(MacroAssembler* masm) {
   GenerateCase(masm, FAST_ELEMENTS);
 }
 
-void FastNewObjectStub::Generate(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r4 : target
-  //  -- r6 : new target
-  //  -- cp : context
-  //  -- lr : return address
-  // -----------------------------------
-  __ AssertFunction(r4);
-  __ AssertReceiver(r6);
-
-  // Verify that the new target is a JSFunction.
-  Label new_object;
-  __ CompareObjectType(r6, r5, r5, JS_FUNCTION_TYPE);
-  __ bne(&new_object);
-
-  // Load the initial map and verify that it's in fact a map.
-  __ LoadP(r5, FieldMemOperand(r6, JSFunction::kPrototypeOrInitialMapOffset));
-  __ JumpIfSmi(r5, &new_object);
-  __ CompareObjectType(r5, r3, r3, MAP_TYPE);
-  __ bne(&new_object);
-
-  // Fall back to runtime if the target differs from the new target's
-  // initial map constructor.
-  __ LoadP(r3, FieldMemOperand(r5, Map::kConstructorOrBackPointerOffset));
-  __ cmp(r3, r4);
-  __ bne(&new_object);
-
-  // Allocate the JSObject on the heap.
-  Label allocate, done_allocate;
-  __ lbz(r7, FieldMemOperand(r5, Map::kInstanceSizeOffset));
-  __ Allocate(r7, r3, r8, r9, &allocate, SIZE_IN_WORDS);
-  __ bind(&done_allocate);
-
-  // Initialize the JSObject fields.
-  __ StoreP(r5, FieldMemOperand(r3, JSObject::kMapOffset), r0);
-  __ LoadRoot(r6, Heap::kEmptyFixedArrayRootIndex);
-  __ StoreP(r6, FieldMemOperand(r3, JSObject::kPropertiesOffset), r0);
-  __ StoreP(r6, FieldMemOperand(r3, JSObject::kElementsOffset), r0);
-  STATIC_ASSERT(JSObject::kHeaderSize == 3 * kPointerSize);
-  __ addi(r4, r3, Operand(JSObject::kHeaderSize - kHeapObjectTag));
-
-  // ----------- S t a t e -------------
-  //  -- r3 : result (tagged)
-  //  -- r4 : result fields (untagged)
-  //  -- r8 : result end (untagged)
-  //  -- r5 : initial map
-  //  -- cp : context
-  //  -- lr : return address
-  // -----------------------------------
-
-  // Perform in-object slack tracking if requested.
-  Label slack_tracking;
-  STATIC_ASSERT(Map::kNoSlackTracking == 0);
-  __ LoadRoot(r9, Heap::kUndefinedValueRootIndex);
-  __ lwz(r6, FieldMemOperand(r5, Map::kBitField3Offset));
-  __ DecodeField<Map::ConstructionCounter>(r10, r6, SetRC);
-  __ bne(&slack_tracking, cr0);
-  {
-    // Initialize all in-object fields with undefined.
-    __ InitializeFieldsWithFiller(r4, r8, r9);
-    __ Ret();
-  }
-  __ bind(&slack_tracking);
-  {
-    // Decrease generous allocation count.
-    STATIC_ASSERT(Map::ConstructionCounter::kNext == 32);
-    __ Add(r6, r6, -(1 << Map::ConstructionCounter::kShift), r0);
-    __ stw(r6, FieldMemOperand(r5, Map::kBitField3Offset));
-
-    // Initialize the in-object fields with undefined.
-    __ lbz(r7, FieldMemOperand(r5, Map::kUnusedPropertyFieldsOffset));
-    __ ShiftLeftImm(r7, r7, Operand(kPointerSizeLog2));
-    __ sub(r7, r8, r7);
-    __ InitializeFieldsWithFiller(r4, r7, r9);
-
-    // Initialize the remaining (reserved) fields with one pointer filler map.
-    __ LoadRoot(r9, Heap::kOnePointerFillerMapRootIndex);
-    __ InitializeFieldsWithFiller(r4, r8, r9);
-
-    // Check if we can finalize the instance size.
-    __ cmpi(r10, Operand(Map::kSlackTrackingCounterEnd));
-    __ Ret(ne);
-
-    // Finalize the instance size.
-    {
-      FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
-      __ Push(r3, r5);
-      __ CallRuntime(Runtime::kFinalizeInstanceSize);
-      __ Pop(r3);
-    }
-    __ Ret();
-  }
-
-  // Fall back to %AllocateInNewSpace.
-  __ bind(&allocate);
-  {
-    FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
-    STATIC_ASSERT(kSmiTag == 0);
-    __ ShiftLeftImm(r7, r7,
-                    Operand(kPointerSizeLog2 + kSmiTagSize + kSmiShiftSize));
-    __ Push(r5, r7);
-    __ CallRuntime(Runtime::kAllocateInNewSpace);
-    __ Pop(r5);
-  }
-  __ lbz(r8, FieldMemOperand(r5, Map::kInstanceSizeOffset));
-  __ ShiftLeftImm(r8, r8, Operand(kPointerSizeLog2));
-  __ add(r8, r3, r8);
-  __ subi(r8, r8, Operand(kHeapObjectTag));
-  __ b(&done_allocate);
-
-  // Fall back to %NewObject.
-  __ bind(&new_object);
-  __ Push(r4, r6);
-  __ TailCallRuntime(Runtime::kNewObject);
-}
-
 void FastNewRestParameterStub::Generate(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- r4 : function