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From: "law at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/112415] [14 regression] Python 3.11
 miscompiled on HPPA with new RTL fold mem offset pass, since
 r14-4664-g04c9cf5c786b94
Date: Sun, 12 Nov 2023 15:54:23 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112415

--- Comment #41 from Jeffrey A. Law <law at gcc dot gnu.org> ---
I would agree.  In fact,the whole point of the f-m-o pass is to bring those
immediates into the memory reference.  It'd be really useful to know why th=
at
isn't happening.

The only thing I can think of would be if multiple instructions needed the =
%r20
in the RTL you attached.  Which might point to a refinement we should make =
in
f-m-o, specifically the transformation isn't likely profitable if we aren't
able to fold away a term or fold a constant term into the actual memory
reference.=