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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/108711] [13 Regression] ICE in get_equiv, at
 lra-constraints.cc:534
Date: Thu, 09 Feb 2023 21:48:46 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108711

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Vladimir Makarov <vmakarov@gcc.gnu.or=
g>:

https://gcc.gnu.org/g:10827a92f1a8c3207b327515f77845b34c1d9512

commit r13-5761-g10827a92f1a8c3207b327515f77845b34c1d9512
Author: Vladimir N. Makarov <vmakarov@redhat.com>
Date:   Thu Feb 9 15:18:48 2023 -0500

    RA: Implement reuse of equivalent memory for caller saves optimization =
(2nd
version)

    The test pr103541.c shows opportunity to reuse memory with constant add=
ress
for
    caller saves optimization for constant or pure function call.  The patch
    implements the memory reuse.

            PR rtl-optimization/103541
            PR rtl-optimization/108711

    gcc/ChangeLog:

            * ira.h (struct ira_reg_equiv_s): Add new field caller_save_p.
            * ira.cc (validate_equiv_mem): Check memref address variance.
            (no_equiv): Clear caller_save_p flag.
            (update_equiv_regs): Define caller save equivalence for
            valid_combine.
            (setup_reg_equiv): Clear defined_p flag for caller save
equivalence.
            * lra-constraints.cc (lra_copy_reg_equiv): Add new arg
            call_save_p.  Use caller save equivalence depending on the arg.
            (split_reg): Adjust the call.

    gcc/testsuite/ChangeLog:

            * gcc.target/i386/pr103541.c: New.
            * g++.target/i386/pr108711.C: New.=