[strong] Disallow implicit conversions for binary arithmetic operations

src/ia32/full-codegen-ia32.cc

Index: src/ia32/full-codegen-ia32.cc
diff --git a/src/ia32/full-codegen-ia32.cc b/src/ia32/full-codegen-ia32.cc
index e2dda91189109a1d2a1c11a7bedd21a653d0b353..dc3d403044c2e7db2edc4d57ff5965c60fc6e8ec 100644
--- a/src/ia32/full-codegen-ia32.cc
+++ b/src/ia32/full-codegen-ia32.cc
@@ -2387,7 +2387,8 @@ void FullCodeGenerator::EmitInlineSmiBinaryOp(BinaryOperation* expr,
 
   __ bind(&stub_call);
   __ mov(eax, ecx);
-  Handle<Code> code = CodeFactory::BinaryOpIC(isolate(), op).code();
+  Handle<Code> code = CodeFactory::BinaryOpIC(
+      isolate(), op, language_mode()).code();
   CallIC(code, expr->BinaryOperationFeedbackId());
   patch_site.EmitPatchInfo();
   __ jmp(&done, Label::kNear);
@@ -2531,7 +2532,8 @@ void FullCodeGenerator::EmitClassDefineProperties(ClassLiteral* lit) {
 
 void FullCodeGenerator::EmitBinaryOp(BinaryOperation* expr, Token::Value op) {
   __ pop(edx);
-  Handle<Code> code = CodeFactory::BinaryOpIC(isolate(), op).code();
+  Handle<Code> code = CodeFactory::BinaryOpIC(
+      isolate(), op, language_mode()).code();
   JumpPatchSite patch_site(masm_);    // unbound, signals no inlined smi code.
   CallIC(code, expr->BinaryOperationFeedbackId());
   patch_site.EmitPatchInfo();
@@ -4925,7 +4927,8 @@ void FullCodeGenerator::VisitCountOperation(CountOperation* expr) {
   __ mov(edx, eax);
   __ mov(eax, Immediate(Smi::FromInt(1)));
   Handle<Code> code =
-      CodeFactory::BinaryOpIC(isolate(), expr->binary_op()).code();
+      CodeFactory::BinaryOpIC(
+          isolate(), expr->binary_op(), language_mode()).code();
   CallIC(code, expr->CountBinOpFeedbackId());
   patch_site.EmitPatchInfo();
   __ bind(&done);