[CSA] Don't use write barriers when writing Smi fields

Change-Id: Ia163acfd04d287d33570374254b661becaf1cc67
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2782160Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73646}

src/codegen/code-stub-assembler.cc

@@ -2912,10 +2912,20 @@ void CodeStubAssembler::StoreHeapNumberValue(TNode<HeapNumber> object,
   StoreObjectFieldNoWriteBarrier(object, HeapNumber::kValueOffset, value);
 }
 
+void CodeStubAssembler::StoreObjectField(TNode<HeapObject> object, int offset,
+                                         TNode<Smi> value) {
+  StoreObjectFieldNoWriteBarrier(object, offset, value);
+}
+
+void CodeStubAssembler::StoreObjectField(TNode<HeapObject> object,
+                                         TNode<IntPtrT> offset,
+                                         TNode<Smi> value) {
+  StoreObjectFieldNoWriteBarrier(object, offset, value);
+}
+
 void CodeStubAssembler::StoreObjectField(TNode<HeapObject> object, int offset,
                                          TNode<Object> value) {
   DCHECK_NE(HeapObject::kMapOffset, offset);  // Use StoreMap instead.
-
   OptimizedStoreField(MachineRepresentation::kTagged,
                       UncheckedCast<HeapObject>(object), offset, value);
 }

src/codegen/code-stub-assembler.h

@@ -1529,6 +1529,9 @@ class V8_EXPORT_PRIVATE CodeStubAssembler
   void StoreHeapNumberValue(TNode<HeapNumber> object, TNode<Float64T> value);
 
   // Store a field to an object on the heap.
+  void StoreObjectField(TNode<HeapObject> object, int offset, TNode<Smi> value);
+  void StoreObjectField(TNode<HeapObject> object, TNode<IntPtrT> offset,
+                        TNode<Smi> value);
   void StoreObjectField(TNode<HeapObject> object, int offset,
                         TNode<Object> value);
   void StoreObjectField(TNode<HeapObject> object, TNode<IntPtrT> offset,