[Analysis] Use std::optional in IRSimilarityIdentifier.h (NFC)
authorKazu Hirata <kazu@google.com>
Sun, 27 Nov 2022 19:49:03 +0000 (11:49 -0800)
committerKazu Hirata <kazu@google.com>
Sun, 27 Nov 2022 19:49:03 +0000 (11:49 -0800)
commitb77a88c42e0c35b12eb54fbc459580adfc1531ba
tree60810c3326608d1e658bf2a293193d069ff532c2
parentc3c0cd6049106406411a2bceaecb418f62da789a
[Analysis] Use std::optional in IRSimilarityIdentifier.h (NFC)

This is part of an effort to migrate from llvm::Optional to
std::optional:

https://discourse.llvm.org/t/deprecating-llvm-optional-x-hasvalue-getvalue-getvalueor/63716
llvm/include/llvm/Analysis/IRSimilarityIdentifier.h