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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/96061] Please support 'no_caller_saved_registers'
 attribute on aarch64 (or maybe on all targets)
Date: Sat, 04 Jul 2020 16:09:23 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96061

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2020-07-04
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Alexander Popov from comment #0)
> This is an enhancement request.
>=20
> GCC currently supports 'no_caller_saved_registers' attribute only for x86.
> Clang supports it for all target architectures.

We are working on -fzero-call-used-regs:

https://gitlab.com/x86-gcc/gcc/-/tree/users/qinzhao/caller-saved/master


They are related.=