LLVM Developers Discuss Enabling ClangIR Build By Default

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LLVM stakeholders are discussing making ClangIR the default option for Clang compilers. ClangIR is a new intermediate representation based on MLIR, and it has a higher level than LLVM IR. By retaining more C/C++ source semantics, its use can lead to better diagnostics, code/static analysis, and performance optimization, which is superior to directly converting to LLVM IR. Currently, this feature has not been enabled as the default, and related discussions are still ongoing.

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ClangIRLLVMMLIR

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P Phoronix en 2026-09-06 18:43

LLVM stakeholders are discussing making ClangIR the default option. ClangIR is a new intermediate representation of the Clang compiler, utilizing MLIR and being higher in level than LLVM IR. By retaining more C/C++ source semantics, its use can lead to better diagnostics, code/static analysis, and performance optimization, compared to directly converting to LLVM IR. Although it has not yet been enabled as the default, LLVM stakeholders are discussing this issue.