Use weak cells to embed maps in store handler.

src/arm64/macro-assembler-arm64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/base/bits.h"
 #include "src/base/division-by-constant.h"
@@ skipping 4632 matching lines @@
     } else {
       Tbnz(bitmap_scratch, 1, has_color);
     }
     Bind(&other_color);
   }
 
   // Fall through if it does not have the right color.
 }
 
 
-void MacroAssembler::CheckMapDeprecated(Handle<Map> map,
-                                        Register scratch,
-                                        Label* if_deprecated) {
-  if (map->CanBeDeprecated()) {
-    Mov(scratch, Operand(map));
-    Ldrsw(scratch, FieldMemOperand(scratch, Map::kBitField3Offset));
-    TestAndBranchIfAnySet(scratch, Map::Deprecated::kMask, if_deprecated);
-  }
-}
-
-
 void MacroAssembler::JumpIfBlack(Register object,
                                  Register scratch0,
                                  Register scratch1,
                                  Label* on_black) {
   DCHECK(strcmp(Marking::kBlackBitPattern, "10") == 0);
   HasColor(object, scratch0, scratch1, on_black, 1, 0);  // kBlackBitPattern.
 }
 
 
 void MacroAssembler::JumpIfDictionaryInPrototypeChain(
@@ skipping 731 matching lines @@
   }
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM64