MIPS: Fix dd() implementations for compact branches.

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 1087 matching lines @@
                                        intptr_t pc_delta);
 
   // Writes a single byte or word of data in the code stream.  Used for
   // inline tables, e.g., jump-tables.
   void db(uint8_t data);
   void dd(uint32_t data);
   void dq(uint64_t data);
   void dp(uintptr_t data) { dq(data); }
   void dd(Label* label);
 
-  // Emits the address of the code stub's first instruction.
-  void emit_code_stub_address(Code* stub);
-
   PositionsRecorder* positions_recorder() { return &positions_recorder_; }
 
   // Postpone the generation of the trampoline pool for the specified number of
   // instructions.
   void BlockTrampolinePoolFor(int instructions);
 
   // Check if there is less than kGap bytes available in the buffer.
   // If this is the case, we need to grow the buffer before emitting
   // an instruction or relocation information.
   inline bool overflow() const { return pc_ >= reloc_info_writer.pos() - kGap; }
@@ skipping 201 matching lines @@
 
   // Readable constants for compact branch handling in emit()
   enum class CompactBranchType : bool { NO = false, COMPACT_BRANCH = true };
 
   // Code emission.
   inline void CheckBuffer();
   void GrowBuffer();
   inline void emit(Instr x,
                    CompactBranchType is_compact_branch = CompactBranchType::NO);
   inline void emit(uint64_t x);
+  inline void CheckForEmitInForbiddenSlot();
+  template <typename T>
+  inline void EmitHelper(T x);
+  inline void EmitHelper(Instr x, CompactBranchType is_compact_branch);
 
   // Instruction generation.
   // We have 3 different kind of encoding layout on MIPS.
   // However due to many different types of objects encoded in the same fields
   // we have quite a few aliases for each mode.
   // Using the same structure to refer to Register and FPURegister would spare a
   // few aliases, but mixing both does not look clean to me.
   // Anyway we could surely implement this differently.
 
   void GenInstrRegister(Opcode opcode,
@@ skipping 156 matching lines @@
  public:
   explicit EnsureSpace(Assembler* assembler) {
     assembler->CheckBuffer();
   }
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_ARM_ASSEMBLER_MIPS_H_