kito-cheng wrote: (Disclaimer: I am not intend to ignite the flames of war about the ISA string canonicalization!)
Give few more background behind the PR, the issue we want to resolve is the multilib issue: we starting using `zc*` extension, but we also have user for using `c` extension, however we found either `rv64ic` or `rv64izca` can't cover each other, but they are identical in theory. In my mind there is a best way to fix that: let c implied `zca`, ***AND*** also add `c` back when the condition met`*`, however the later one is more disturb I guess, so do the first part, which is what this PR do, and then always use `zc*` extension when building multllib list, that could at least resolve the multilib issue between `zc*` and `c`. `*` The condition in the [spec](https://github.com/riscvarchive/riscv-code-size-reduction/blob/main/Zc-specification/Zc.adoc#13-c): The C extension is the superset of the following extensions: - Zca - Zcf if F is specified (RV32 only) - Zcd if D is specified https://github.com/llvm/llvm-project/pull/132259 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
