[PATCH] D106347: [PoC][RISCV] Encode arch information in a new module flag meatadata 'riscv-isa-bits'.

[Zakk Chen via Phabricator via cfe-commits]

khchen added a comment.

In D106347#2890123 <https://reviews.llvm.org/D106347#2890123>, @jrtc27 wrote:

> Why can't we just save target-features itself as a module flag instead of inventing yet another equivalent encoding? Especially since a long bitfield is brittle, you can't reorder or remove elements without breaking bitcode compatibility.

I think the benefit of using bitfield is making link behavior simpler. I will try to investigate another link behavior to handle two different target-features strings especially have `+` or `-`.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D106347/new/

https://reviews.llvm.org/D106347