[PATCH] D115921: [RISCV] Refactor the RISCV ISA extension info and target features to support multiple extension version

[Luís Marques via Phabricator via llvm-commits]

luismarques added a comment.

> enable 'm' extension with passing mattr=+m After this patch, it would be -mattr=+m2p0.

It's not obvious to me that support for extension versions should mean or has to mean that we always explicitly specify the version. Why can't we keep supporting the option `mattr=+m`, which would be mapped to `mattr=+m,+m2p0`, or whatever the current default `m` version happens to be?


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  https://reviews.llvm.org/D115921/new/

https://reviews.llvm.org/D115921