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From: "amonakov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/108315] -mcpu=power10 changes ABI
Date: Tue, 28 Feb 2023 06:15:43 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108315

--- Comment #3 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Alan implemented the special case of .localentry 1 in this patch for the BFD
linker (that appeared in binutils 2.32 if my calculations are correct):
https://sourceware.org/pipermail/binutils/2018-July/103936.html

and, I think, in this patchset for the Gold linker:
https://sourceware.org/pipermail/binutils/2019-July/107486.html

Corresponding support in the LLVM linker (LLD) also seems to appear around
2018.

It looks like de-facto ABI change even if on paper nothing changed, because=
 all
Linux linkers interpreted .localentry 1 accordingly to the general rule and
would silently produce wrong code. Hence my suggestion to document it.

Plus, someone would have to reach out to the mold maintainer, as mold doesn=
't
seem to implement this special case.=