llvm-project

cb637016 - [mlir] Deprecate OpPrintingFlags(std::nullopt_t) (NFC) (#149546)

[mlir] Deprecate OpPrintingFlags(std::nullopt_t) (NFC) (#149546) This patch deprecates OpPrintingFlags(std::nullopt_t) to avoid use of std::nullopt outside the context of std::optional.