[strong] Refactor ObjectStrength into a replacement for strong boolean args

src/arm64/lithium-arm64.h

 // Copyright 2013 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.
 
 #ifndef V8_ARM64_LITHIUM_ARM64_H_
 #define V8_ARM64_LITHIUM_ARM64_H_
 
 #include "src/hydrogen.h"
 #include "src/lithium.h"
 #include "src/lithium-allocator.h"
@@ skipping 701 matching lines @@
   LOperand* left() { return inputs_[1]; }
   LOperand* right() { return inputs_[2]; }
   Token::Value op() const { return op_; }
 
   Opcode opcode() const override { return LInstruction::kArithmeticT; }
   void CompileToNative(LCodeGen* generator) override;
   const char* Mnemonic() const override;
 
   DECLARE_HYDROGEN_ACCESSOR(BinaryOperation)
 
-  LanguageMode language_mode() { return hydrogen()->language_mode(); }
+  Strength strength() { return hydrogen()->strength(); }
 
  private:
   Token::Value op_;
 };
 
 
 class LBoundsCheck final : public LTemplateInstruction<0, 2, 0> {
  public:
   explicit LBoundsCheck(LOperand* index, LOperand* length) {
     inputs_[0] = index;
@@ skipping 421 matching lines @@
     inputs_[2] = right;
   }
 
   LOperand* context() { return inputs_[0]; }
   LOperand* left() { return inputs_[1]; }
   LOperand* right() { return inputs_[2]; }
 
   DECLARE_CONCRETE_INSTRUCTION(CmpT, "cmp-t")
   DECLARE_HYDROGEN_ACCESSOR(CompareGeneric)
 
-  LanguageMode language_mode() { return hydrogen()->language_mode(); }
+  Strength strength() { return hydrogen()->strength(); }
 
   Token::Value op() const { return hydrogen()->token(); }
 };
 
 
 class LCompareMinusZeroAndBranch final : public LControlInstruction<1, 1> {
  public:
   LCompareMinusZeroAndBranch(LOperand* value, LOperand* temp) {
     inputs_[0] = value;
     temps_[0] = temp;
@@ skipping 2058 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(LChunkBuilder);
 };
 
 #undef DECLARE_HYDROGEN_ACCESSOR
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM64_LITHIUM_ARM64_H_