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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/114415] [13 Regression] wrong code with -Oz
 -fno-dce -fno-forward-propagate -flive-range-shrinkage -fweb since r13-1826
Date: Thu, 09 May 2024 16:42:34 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114415

--- Comment #12 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-13 branch has been updated by Vladimir Makarov
<vmakarov@gcc.gnu.org>:

https://gcc.gnu.org/g:e30211cb0b3a2b88959e9bc40626a17461de52de

commit r13-8740-ge30211cb0b3a2b88959e9bc40626a17461de52de
Author: Vladimir N. Makarov <vmakarov@redhat.com>
Date:   Thu Apr 4 16:04:04 2024 -0400

    [PR114415][scheduler]: Fixing wrong code generation

      For the test case, the insn scheduler (working for live range
    shrinkage) moves insns modifying stack memory before an insn reserving
    the stack memory. Comments in the patch contains more details about
    the problem and its solution.

    gcc/ChangeLog:

            PR rtl-optimization/114415
            * sched-deps.cc (add_insn_mem_dependence): Add memory check for=
 mem
argument.
            (sched_analyze_1): Treat stack pointer modification as memory r=
ead.
            (sched_analyze_2, sched_analyze_insn): Add memory guard for
processing pending_read_mems.
            * sched-int.h (deps_desc): Add comment to pending_read_mems.

    gcc/testsuite/ChangeLog:

            PR rtl-optimization/114415
            * gcc.target/i386/pr114415.c: New test.=