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From: "alex.popov at linux 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 22:01:06 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96061

--- Comment #6 from Alexander Popov <alex.popov at linux dot com> ---
>> Could you explain the connection between your attribute for zeroing
>> registers and 'no_caller_saved_registers' attribute?
>=20
> We are porting
>=20
> https://gitlab.com/x86-gcc/gcc/-/tree/users/hjl/caller-saved/old
>=20
> from x86 back-end to middle-end.  no_caller_saved_registers changes what
> registers zero_call_used_regs can do.  Move no_caller_saved_registers to
> middle-end has a direct impact on zero_call_used_regs implementation in
> middle-end.

Ok. So, as I can understand, your work will enable 'no_caller_saved_registe=
rs'
attribute for all architectures. Am I right?

If so, good luck to you! Looking forward to your results.=