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Introducing ClangIR: An MLIR-Based High-Level IR for the C/C++ Family of Languages

SessionLLVM-HPC2024: The Tenth Workshop on the LLVM Compiler Infrastructure in HPC

DescriptionThe rapid pace of hardware innovation and the quest for performance in HPC workloads demand that compilers deliver their best. To support this effort, we introduce ClangIR (CIR), a new intermediate representation (IR) for Clang that captures higher-level semantics for C, C++, and extensions. ClangIR streamlines domain-specific code transformations and analysis by eliminating the need to reconstruct semantics from lower-level IRs like LLVM. Additionally, it enables the HPC community to more seamlessly integrate C/C++ language extensions and custom backends into their Clang based compilers. Built on MLIR, ClangIR is an active open-source project on LLVM's GitHub repository. This talk will cover its design principles, benefits, and ongoing development efforts, as well as opportunities for collaboration and contribution from the community.

Presenter

Bruno Cardoso Lopes