Enable constant pool support.

src/mips64/assembler-mips64.cc

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 2914 matching lines @@
   }
 
   if (patched) {
       CpuFeatures::FlushICache(pc+6, sizeof(int32_t));
   }
 }
 
 
 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;
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS64