[strong] Disallow implicit conversions for comparison

src/ia32/lithium-ia32.h

Index: src/ia32/lithium-ia32.h
diff --git a/src/ia32/lithium-ia32.h b/src/ia32/lithium-ia32.h
index 4d245ecb5081a356386da420d48b235007747532..54a8b0941b79f254ed1f706e692356889b9bdc2f 100644
--- a/src/ia32/lithium-ia32.h
+++ b/src/ia32/lithium-ia32.h
@@ -1190,6 +1190,8 @@ class LCmpT final : public LTemplateInstruction<1, 3, 0> {
   DECLARE_CONCRETE_INSTRUCTION(CmpT, "cmp-t")
   DECLARE_HYDROGEN_ACCESSOR(CompareGeneric)
 
+  LanguageMode language_mode() { return hydrogen()->language_mode(); }
+
   LOperand* context() { return inputs_[0]; }
   Token::Value op() const { return hydrogen()->token(); }
 };