[Analysis] Use std::optional in TensorSpec.h (NFC)
authorKazu Hirata <kazu@google.com>
Sun, 27 Nov 2022 20:18:28 +0000 (12:18 -0800)
committerKazu Hirata <kazu@google.com>
Sun, 27 Nov 2022 20:18:28 +0000 (12:18 -0800)
commitae634b16e901f3e13ed917771957c30e15b7f1b2
treea812190ea16029a0237fff7144297a3243d39f50
parent1226028729e358e3259afeed2c1ccc9f47a367cb
[Analysis] Use std::optional in TensorSpec.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/TensorSpec.h