Enable constant pool support.

src/arm64/assembler-arm64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
@@ skipping 3108 matching lines @@
 
 void Assembler::RecordConstPool(int size) {
   // We only need this for debugger support, to correctly compute offsets in the
   // code.
   RecordRelocInfo(RelocInfo::CONST_POOL, static_cast<intptr_t>(size));
 }
 
 
 Handle<ConstantPoolArray> Assembler::NewConstantPool(Isolate* isolate) {
   // No out-of-line constant pool support.
-  DCHECK(!FLAG_enable_ool_constant_pool);
+  UNREACHABLE();
   return isolate->factory()->empty_constant_pool_array();
 }
 
 
 void Assembler::PopulateConstantPool(ConstantPoolArray* constant_pool) {
   // No out-of-line constant pool support.
-  DCHECK(!FLAG_enable_ool_constant_pool);
+  UNREACHABLE();
   return;
 }
 
 
 void PatchingAssembler::PatchAdrFar(int64_t target_offset) {
   // The code at the current instruction should be:
   //   adr  rd, 0
   //   nop  (adr_far)
   //   nop  (adr_far)
   //   movz scratch, 0
@@ skipping 20 matching lines @@
   movz(scratch, (target_offset >> 16) & 0xFFFF, 16);
   movk(scratch, (target_offset >> 32) & 0xFFFF, 32);
   DCHECK((target_offset >> 48) == 0);
   add(rd, rd, scratch);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM64