[compiler] Perform Map::bit_field_2 read/writes non-atomically

We set the bit_field_2 fields at map construction.

Bug: v8:7790, chromium:1150811
Change-Id: I673334d6900993b8a52e3b85d504cbc3f457c020
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2773053
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73638}

src/objects/map-inl.h

@@ -458,12 +458,10 @@ void Map::set_relaxed_bit_field(byte value) {
   RELAXED_WRITE_BYTE_FIELD(*this, kBitFieldOffset, value);
 }
 
-byte Map::bit_field2() const {
-  return ACQUIRE_READ_BYTE_FIELD(*this, kBitField2Offset);
-}
+byte Map::bit_field2() const { return ReadField<byte>(kBitField2Offset); }
 
 void Map::set_bit_field2(byte value) {
-  RELEASE_WRITE_BYTE_FIELD(*this, kBitField2Offset, value);
+  WriteField<byte>(kBitField2Offset, value);
 }
 
 bool Map::is_abandoned_prototype_map() const {