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

[Jessica Clarke via Phabricator via cfe-commits]

jrtc27 added a comment.

I'm unconvinced about landing something like this until there's an actual use case in the tree. How do we know this will actually work the way we want it to if there's nothing proving it? It's still unclear to me how exactly this is going to be represented in the target features, but also with RISC-V extensions not being changed once ratified any more (changes mean new extensions entirely, not new versions) I don't know whether this is actually needed or we can just deal with the couple of existing cases more simply.



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Comment at: llvm/lib/Support/RISCVISAInfo.cpp:48
     {"v", RISCVExtensionVersion{0, 10}},
+    //{"v", RISCVExtensionVersion{0, 7}},
     {"zba", RISCVExtensionVersion{1, 0}},
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Don't do this


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

https://reviews.llvm.org/D115921