[Bug rtl-optimization/114415] [13/14 Regression] wrong code with -Oz -fno-dce -fno-forward-propagate -flive-range-shrinkage -fweb since r13-1826

["cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114415

--- Comment #6 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Vladimir Makarov <vmakarov@gcc.gnu.org>:

https://gcc.gnu.org/g:a24476422ba311b83737cf8bdc5892a7fc7514eb

commit r14-9793-ga24476422ba311b83737cf8bdc5892a7fc7514eb
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 read.
            (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.