Super Constructor Calls need to use a vector slot, not an ic slot.

src/x64/full-codegen-x64.cc

Index: src/x64/full-codegen-x64.cc
diff --git a/src/x64/full-codegen-x64.cc b/src/x64/full-codegen-x64.cc
index 6c77274fe0e07e8f689fe5a28289476dd2294e97..c49c06cb5d3bf3bfdd2040a50509b59bf54977a4 100644
--- a/src/x64/full-codegen-x64.cc
+++ b/src/x64/full-codegen-x64.cc
@@ -2906,7 +2906,7 @@ void FullCodeGenerator::EmitCall(Call* expr, CallICState::CallType call_type) {
   // Record source position of the IC call.
   SetSourcePosition(expr->position());
   Handle<Code> ic = CodeFactory::CallIC(isolate(), arg_count, call_type).code();
-  __ Move(rdx, SmiFromSlot(expr->CallFeedbackSlot()));
+  __ Move(rdx, SmiFromSlot(expr->CallFeedbackICSlot()));
   __ movp(rdi, Operand(rsp, (arg_count + 1) * kPointerSize));
   // Don't assign a type feedback id to the IC, since type feedback is provided
   // by the vector above.