[NFC][IntrRefLDV] Some code clean up
authorDjordje Todorovic <djordje.todorovic@syrmia.com>
Mon, 26 Oct 2020 14:04:14 +0000 (07:04 -0700)
committerDjordje Todorovic <djtodoro@cisco.com>
Tue, 27 Oct 2020 12:31:24 +0000 (05:31 -0700)
commitcca049ad2b307dadedd8b5b6fbb05ca74b153a0d
treea42e9dfdda85d20e6d540f95ac1928ffc82f6e0d
parent5d0308009284a0c8b75fb683eaba89c2e0c677f6
[NFC][IntrRefLDV] Some code clean up

As reading the source code, I've found some minor nits:
  -Use using instead of typedef
  -Fix a comment
  -Refactor

Differential Revision: https://reviews.llvm.org/D90155
llvm/lib/CodeGen/LiveDebugValues/InstrRefBasedImpl.cpp