[strong] Disallow implicit conversions for binary arithmetic operations

src/ia32/lithium-codegen-ia32.cc

Index: src/ia32/lithium-codegen-ia32.cc
diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index 564ef0046ab5fed77d89fbfd7b7597d284721cf7..12aacbc5034efe4282241d4db4ea572331a993b9 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -2075,7 +2075,8 @@ void LCodeGen::DoArithmeticT(LArithmeticT* instr) {
   DCHECK(ToRegister(instr->right()).is(eax));
   DCHECK(ToRegister(instr->result()).is(eax));
 
-  Handle<Code> code = CodeFactory::BinaryOpIC(isolate(), instr->op()).code();
+  Handle<Code> code = CodeFactory::BinaryOpIC(
+      isolate(), instr->op(), language_mode()).code();
   CallCode(code, RelocInfo::CODE_TARGET, instr);
 }