[PATCH] D48580: [AArch64] Support reserving x1-7 registers.

[James Y Knight via Phabricator via llvm-commits]

jyknight added a comment.

In https://reviews.llvm.org/D48580#1168470, @manojgupta wrote:

> @efriedma  Maybe not relevant to the patch here but our kernel devs were looking into preserve_all but it does not seem to work for AArch64.
>
> $ cat test.c 
>  void __attribute__((preserve_all)) foo(void *ptr) { }
>
> $ clang -c test.c -> compiles for x86_64
>  $ clang -c -target aarch64-unknown-linux-gnu
>
> fatal error: error in backend: Unsupported calling convention.


What clang version is that? Works fine for me.


Repository:
  rL LLVM

https://reviews.llvm.org/D48580