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| author | Ramkumar Ramachandra <ramkumar.ramachandra@codasip.com> | 2025-06-02 09:25:50 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2025-06-02 08:25:50 +0100 |
| commit | af2f8a8c14e3bf8c4af8f814c58913e2798b05ef (patch) | |
| tree | 3f05453dbf1027197fe7c4e4b919afe6f44ec74f /clang/lib/CodeGen/ModuleBuilder.cpp | |
| parent | f2582c95febbbee1de31cb5ebfe863f36aedec58 (diff) | |
| download | llvm-af2f8a8c14e3bf8c4af8f814c58913e2798b05ef.zip llvm-af2f8a8c14e3bf8c4af8f814c58913e2798b05ef.tar.gz llvm-af2f8a8c14e3bf8c4af8f814c58913e2798b05ef.tar.bz2 | |
[HashRecognize] Introduce new analysis (#139120)
Introduce a fresh analysis for recognizing polynomial hashes, with the
rationale that several targets have specific instructions to optimize
things like CRC and GHASH (eg. X86 and RISC-V crypto extension). We
limit the scope to polynomial hashes computed in a Galois field of
characteristic 2, since this class of operations can also be optimized
in the absence of target-specific instructions to use a lookup table.
At the moment, we only recognize the CRC algorithm.
RFC:
https://discourse.llvm.org/t/rfc-new-analysis-for-polynomial-hash-recognition/86268
Diffstat (limited to 'clang/lib/CodeGen/ModuleBuilder.cpp')
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