[Analysis] Use std::optional in LazyCallGraph.h (NFC)
authorKazu Hirata <kazu@google.com>
Sun, 27 Nov 2022 19:49:06 +0000 (11:49 -0800)
committerKazu Hirata <kazu@google.com>
Sun, 27 Nov 2022 19:49:06 +0000 (11:49 -0800)
commit5047104a76445bb424e480594f0eb2ed768315b3
tree0c7d1c4e800e87be3723132572c89c45ef0603e7
parent4c88bc5017d28ba219d6f6272bd654727cdc6452
[Analysis] Use std::optional in LazyCallGraph.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/LazyCallGraph.h