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

Zixuan Wu via Phabricator via cfe-commits cfe-commits at lists.llvm.org
Wed Dec 22 18:30:27 PST 2021

zixuan-wu added a comment.

In D115921#3206156 <https://reviews.llvm.org/D115921#3206156>, @jrtc27 wrote:

> Do not bring back V draft 0.7. It is gone, it will never be supported again by LLVM under that name. The standard extension namespace is reserved for ratified extensions and development snapshots only, not old drafts vendors decided to ship. For those, non-standard extension names are needed.

I understood only ratified extension is accepted. Even for ratified extension, the version is going to evolve in the future. So this patch is for that. v0p7 is just used to go through the codepath to support multiple version and test as now there is no extension that is not the default version. I will change the test way.



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