Expose receiver check type in call type feedback.

src/heap.cc

Index: src/heap.cc
diff --git a/src/heap.cc b/src/heap.cc
index 156e38318078cf0a22f01373cf07746323c730fc..32d751a392924fd088e67d4dd2edc25b3c4815e7 100644
--- a/src/heap.cc
+++ b/src/heap.cc
@@ -2724,6 +2724,9 @@ MaybeObject* Heap::CreateCode(const CodeDesc& desc,
   code->set_instruction_size(desc.instr_size);
   code->set_relocation_info(ByteArray::cast(reloc_info));
   code->set_flags(flags);
+  if (code->is_call_stub() || code->is_keyed_call_stub()) {
+    code->set_check_type(RECEIVER_MAP_CHECK);
+  }
   code->set_deoptimization_data(empty_fixed_array());
   // Allow self references to created code object by patching the handle to
   // point to the newly allocated Code object.