Refactor FrameAndConstantPoolScope and ConstantPoolUnavailableScope to be architecture independent

src/mips64/assembler-mips64.h

 // 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 1129 matching lines @@
   static bool IsEmittedConstant(Instr instr);
 
   void CheckTrampolinePool();
 
   // Allocate a constant pool of the correct size for the generated code.
   Handle<ConstantPoolArray> NewConstantPool(Isolate* isolate);
 
   // Generate the constant pool for the generated code.
   void PopulateConstantPool(ConstantPoolArray* constant_pool);
 
+  bool is_constant_pool_available() const { return false; }
+
  protected:
   // Relocation for a type-recording IC has the AST id added to it.  This
   // member variable is a way to pass the information from the call site to
   // the relocation info.
   TypeFeedbackId recorded_ast_id_;
 
   int64_t buffer_space() const { return reloc_info_writer.pos() - pc_; }
 
   // Decode branch instruction at pos and return branch target pos.
   int64_t target_at(int64_t pos);
@@ skipping 43 matching lines @@
 
   void EndBlockGrowBuffer() {
     DCHECK(block_buffer_growth_);
     block_buffer_growth_ = false;
   }
 
   bool is_buffer_growth_blocked() const {
     return block_buffer_growth_;
   }
 
+  void set_constant_pool_available(bool available) {
+    // Constant pool is not supported on mips64.
+    UNREACHABLE();
+  }
+
  private:
   // Buffer size and constant pool distance are checked together at regular
   // intervals of kBufferCheckInterval emitted bytes.
   static const int kBufferCheckInterval = 1*KB/2;
 
   // Code generation.
   // The relocation writer's position is at least kGap bytes below the end of
   // the generated instructions. This is so that multi-instruction sequences do
   // not have to check for overflow. The same is true for writes of large
   // relocation info entries.
@@ skipping 175 matching lines @@
   bool internal_trampoline_exception_;
 
   friend class RegExpMacroAssemblerMIPS;
   friend class RelocInfo;
   friend class CodePatcher;
   friend class BlockTrampolinePoolScope;
 
   PositionsRecorder positions_recorder_;
   friend class PositionsRecorder;
   friend class EnsureSpace;
+
+  // constant pool
+  friend class FrameAndConstantPoolScope;
+  friend class ConstantPoolUnavailableScope;
 };
 
 
 class EnsureSpace BASE_EMBEDDED {
  public:
   explicit EnsureSpace(Assembler* assembler) {
     assembler->CheckBuffer();
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_ASSEMBLER_MIPS_H_