[PATCH] D136264: [libunwind][RISCV] Support reading of VLENB CSR register

[Catherine via Phabricator via llvm-commits]

whitequark added a comment.
Herald added subscribers: wangpc, jobnoorman, asb.

I think this revision introduces a bug: namely, without Zicsr enabled, the code would not compile.

The code in `getRegister` should be wrapped in `#if defined(__riscv_zicsr)` and if it's not enabled then 0 would be returned. As I understand, the vector extension implies Zicsr.


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https://reviews.llvm.org/D136264