[PATCH] D110869: [X86] Implement -fzero-call-used-regs option

[Bill Wendling via Phabricator via cfe-commits]

void added a comment.

In D110869#3087776 <https://reviews.llvm.org/D110869#3087776>, @nathanchance wrote:

> `check-llvm` does not pass with this revision nor does it resolve the boot failure that Nick mentioned, just in case that was the intention of the revision :) I ran the kernel through `gdb` and it still does not appear to get to `start_kernel`.

Yeah. That was an interim revision. I'm not happy with the register selection code. I still think it needs to be more generic, like in GCC. I need to do that before this feature can go in.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D110869/new/

https://reviews.llvm.org/D110869