[strong] Disallow implicit conversions for binary arithmetic operations

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index 8cbdf99106c80b06cda784b4be9a84ff93fb6ef7..2cc55fee39a67867f367849caf132e99a21a8ac2 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -2174,7 +2174,8 @@ void LCodeGen::DoArithmeticT(LArithmeticT* instr) {
   DCHECK(ToRegister(instr->right()).is(r0));
   DCHECK(ToRegister(instr->result()).is(r0));
 
-  Handle<Code> code = CodeFactory::BinaryOpIC(isolate(), instr->op()).code();
+  Handle<Code> code = CodeFactory::BinaryOpIC(
+      isolate(), instr->op(), language_mode()).code();
   // Block literal pool emission to ensure nop indicating no inlined smi code
   // is in the correct position.
   Assembler::BlockConstPoolScope block_const_pool(masm());