[heap] MemoryChunk cleanup

src/s390/macro-assembler-s390.cc

 // Copyright 2014 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 <assert.h>  // For assert
 #include <limits.h>  // For LONG_MIN, LONG_MAX.
 
 #if V8_TARGET_ARCH_S390
 
 #include "src/base/bits.h"
@@ skipping 233 matching lines @@
 
 void MacroAssembler::StoreRoot(Register source, Heap::RootListIndex index,
                                Condition) {
   DCHECK(Heap::RootCanBeWrittenAfterInitialization(index));
   StoreP(source, MemOperand(kRootRegister, index << kPointerSizeLog2));
 }
 
 void MacroAssembler::InNewSpace(Register object, Register scratch,
                                 Condition cond, Label* branch) {
   DCHECK(cond == eq || cond == ne);
-  // TODO(joransiu): check if we can merge mov Operand into AndP.
-  const int mask =
-      (1 << MemoryChunk::IN_FROM_SPACE) | (1 << MemoryChunk::IN_TO_SPACE);
-  CheckPageFlag(object, scratch, mask, cond, branch);
+  CheckPageFlag(object, scratch, MemoryChunk::kIsInNewSpaceMask, cond, branch);
 }
 
 void MacroAssembler::RecordWriteField(
     Register object, int offset, Register value, Register dst,
     LinkRegisterStatus lr_status, SaveFPRegsMode save_fp,
     RememberedSetAction remembered_set_action, SmiCheck smi_check,
     PointersToHereCheck pointers_to_here_check_for_value) {
   // First, check if a write barrier is even needed. The tests below
   // catch stores of Smis.
   Label done;
@@ skipping 5268 matching lines @@
   }
   if (mag.shift > 0) ShiftRightArith(result, result, Operand(mag.shift));
   ExtractBit(r0, dividend, 31);
   AddP(result, r0);
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_S390