[PATCH] D62686: [RISCV] Add support for save/restore of callee-saved registers via libcalls

Wed Sep 18 03:26:27 PDT 2019

lewis-revill added a comment.

In D62686#1672346 <https://reviews.llvm.org/D62686#1672346>, @lenary wrote:

> In D62686#1671123 <https://reviews.llvm.org/D62686#1671123>, @lewis-revill wrote:
>
> > There is an option to Clang for '-msave-restore' which should be utilized to enable this.
>
>
> I don't think we'd have a problem if clang support for this came in a separate commit.

There needs to be an LLVM component too, to add a target feature such that we can do `Features.push_back("+save-restore")` from Clang.

Repository:
  rG LLVM Github Monorepo

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https://reviews.llvm.org/D62686