[PATCH] D94931: [RISCV] Add attribute support for all supported extensions

[Kito Cheng via Phabricator via llvm-commits]

kito-cheng added a comment.

I think maybe we could extract the arch parser from driver[1] to `llvm/lib/Support`, so that we could just maintain one parser for driver and assembler, and there is also other potential user for that, like the C front-end for the target attribute, e.g. `__attribute__ ((target ("arch=rv64gcv")))`, and the linker can re-use that to read/merge/write the attribute too.

[1] https://github.com/llvm/llvm-project/blob/main/clang/lib/Driver/ToolChains/Arch/RISCV.cpp#L171


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