[heap] Disallow allocation on the last page in address range

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.
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/base/bits.h"
 #include "src/base/division-by-constant.h"
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
@@ skipping 3072 matching lines @@
     // Load allocation limit. Result already contains allocation top.
     Ldr(alloc_limit, MemOperand(top_address, limit - top));
   }
 
   // We can ignore DOUBLE_ALIGNMENT flags here because doubles and pointers have
   // the same alignment on ARM64.
   STATIC_ASSERT(kPointerAlignment == kDoubleAlignment);
 
   // Calculate new top and bail out if new space is exhausted.
   Adds(result_end, result, object_size);
-  Ccmp(result_end, alloc_limit, CFlag, cc);
+  Ccmp(result_end, alloc_limit, NoFlag, cc);
   B(hi, gc_required);
   Str(result_end, MemOperand(top_address));
 
   // Tag the object if requested.
   if ((flags & TAG_OBJECT) != 0) {
     ObjectTag(result, result);
   }
 }
 
 
@@ skipping 1977 matching lines @@
 }
 
 
 #undef __
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM64