Introduce LiteralsArray to hide it's implementation.

src/mips64/lithium-codegen-mips64.cc

 // Copyright 2012 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/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/hydrogen-osr.h"
 #include "src/ic/ic.h"
 #include "src/ic/stub-cache.h"
 #include "src/mips64/lithium-codegen-mips64.h"
@@ skipping 5581 matching lines @@
 
 void LCodeGen::DoRegExpLiteral(LRegExpLiteral* instr) {
   DCHECK(ToRegister(instr->context()).is(cp));
   Label materialized;
   // Registers will be used as follows:
   // a7 = literals array.
   // a1 = regexp literal.
   // a0 = regexp literal clone.
   // a2 and a4-a6 are used as temporaries.
   int literal_offset =
-      FixedArray::OffsetOfElementAt(instr->hydrogen()->literal_index());
+      LiteralsArray::OffsetOfLiteralAt(instr->hydrogen()->literal_index());
   __ li(a7, instr->hydrogen()->literals());
   __ ld(a1, FieldMemOperand(a7, literal_offset));
   __ LoadRoot(at, Heap::kUndefinedValueRootIndex);
   __ Branch(&materialized, ne, a1, Operand(at));
 
   // Create regexp literal using runtime function
   // Result will be in v0.
   __ li(a6, Operand(Smi::FromInt(instr->hydrogen()->literal_index())));
   __ li(a5, Operand(instr->hydrogen()->pattern()));
   __ li(a4, Operand(instr->hydrogen()->flags()));
@@ skipping 472 matching lines @@
   __ Push(at, ToRegister(instr->function()));
   CallRuntime(Runtime::kPushBlockContext, 2, instr);
   RecordSafepoint(Safepoint::kNoLazyDeopt);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8