[strong] Fix inlining issue

src/x87/lithium-x87.h

Index: src/x87/lithium-x87.h
diff --git a/src/x87/lithium-x87.h b/src/x87/lithium-x87.h
index 7a8b1e7d8098bd37156808ec107975fc6072bfb1..1422f65adecd3ef6e27b2549b8ac27df11da2e01 100644
--- a/src/x87/lithium-x87.h
+++ b/src/x87/lithium-x87.h
@@ -1559,12 +1559,15 @@ class LArithmeticT final : public LTemplateInstruction<1, 3, 0> {
   LOperand* context() { return inputs_[0]; }
   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;
 
-  Token::Value op() const { return op_; }
+  DECLARE_HYDROGEN_ACCESSOR(BinaryOperation)
+
+  LanguageMode language_mode() { return hydrogen()->language_mode(); }
 
  private:
   Token::Value op_;