[mlir] Use std::optional instead of llvm::Optional (NFC)
authorKazu Hirata <kazu@google.com>
Wed, 15 Feb 2023 04:33:36 +0000 (20:33 -0800)
committerKazu Hirata <kazu@google.com>
Wed, 15 Feb 2023 04:33:36 +0000 (20:33 -0800)
commit05423905d064c196f745a57050e3e918b0243765
tree3ade8c1e6f3e94d3eed9da40db5e678b434c0ba7
parent4dfd5a3eb6c3bc26ab19a18bfc2cbf2ec609c370
[mlir] Use std::optional instead of llvm::Optional (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/LLVMCommon/TypeConverter.cpp
mlir/lib/Dialect/Affine/IR/AffineOps.cpp
mlir/lib/Dialect/Transform/IR/TransformOps.cpp
mlir/lib/Transforms/Utils/DialectConversion.cpp