[MemRefToLLVM] Use std::optional in MemRefToLLVM.cpp (NFC)
authorKazu Hirata <kazu@google.com>
Sat, 10 Dec 2022 18:41:43 +0000 (10:41 -0800)
committerKazu Hirata <kazu@google.com>
Sat, 10 Dec 2022 18:41:43 +0000 (10:41 -0800)
commit7d2b180e6846e7efbc4ae6186b7af3dabe9ef8d5
tree21d05f4728109dbe698af691e7176dcd965230cc
parent1adfdab39936e3fe6f4b7bca945f3d46b4b075e3
[MemRefToLLVM] Use std::optional in MemRefToLLVM.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
mlir/lib/Conversion/MemRefToLLVM/MemRefToLLVM.cpp