llvm-project

c98b05bd - [mlir] Deprecate NamedAttrList(std::nullopt_t) (NFC) (#149544)

[mlir] Deprecate NamedAttrList(std::nullopt_t) (NFC) (#149544) This patch deprecates NamedAttrList(std::nullopt_t) to avoid use of std::nullopt outside the context of std::optional.