llvm-project

607a1f2a - [CIR] Add cir-opt tool to exercise CIR dialect parsing (#128254)

[CIR] Add cir-opt tool to exercise CIR dialect parsing (#128254) We need to be able to read in and parse files using the ClangIR dialect in order to test this part of the functionality. This change adds the minimum cir-opt tool needed to read and parse cir files and write them back to text. This tool will later be extended to add features for lowering from CIR to other MLIR dialects and to run CIR passes as they are upstreamed.