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fanghuaqi merged 2 commits into from
Dec 23, 2025
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doc: LLVM mtune in 2025.10 Toolchain Only Supports RV32 #60

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doc: LLVM mtune in 2025.10 Toolchain Only Supports RV32
bigmagic123 Nov 27, 2025
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doc: Describe the root cause of the incorrect ‑mtune implementation i…
bigmagic123 Dec 23, 2025
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14 changes: 14 additions & 0 deletions source/toolchain/llvm/intro.rst
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Expand Up @@ -152,3 +152,17 @@ If you need to report an issue to the developers, please provide:
1. The ``gcc/build.txt`` file (located in the GCC directory) for GCC compilation details.

2. The ``gcc/gitrepo.txt`` file to confirm commit IDs of each tool, which helps determine more detailed build information.

Known Issues
============

The LLVM 2025.10 implementation contains a bug in the nuclei ``-mtune`` support.

-------------------------------------------------

When the LLVM Nuclei scheduling definitions were added, the processor models were declared with the generic ``RISCVProcessorModel`` instead of the architecture-tuned ``RISCVTuneProcessorModel``.

References:

- https://github.com/riscv-mcu/riscv-gnu-toolchain/issues/37