[LTO] Use std::optional in LTO.cpp (NFC)
authorKazu Hirata <kazu@google.com>
Sat, 26 Nov 2022 23:29:30 +0000 (15:29 -0800)
committerKazu Hirata <kazu@google.com>
Sat, 26 Nov 2022 23:29:30 +0000 (15:29 -0800)
commitb68a38a960d8266aff9600c69c1080dbbef33ec7
treeb5d4d9b6fdce69143d19a4d33ea30e62cee603c9
parente5a1ee531b2d325b0c793f849abbbbd4c9d315fd
[LTO] Use std::optional in LTO.cpp (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/lib/LTO/LTO.cpp