[Bug rtl-optimization/109276] New: ICE: in assign_stack_local_1, at function.cc:429 with -mpreferred-stack-boundary=2

["max.aehle at scicomp dot uni-kl.de" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109276

            Bug ID: 109276
           Summary: ICE: in assign_stack_local_1, at function.cc:429 with
                    -mpreferred-stack-boundary=2
           Product: gcc
           Version: 12.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: max.aehle at scicomp dot uni-kl.de
  Target Milestone: ---

Created attachment 54745
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=54745&action=edit
verbose output, preprocessed source, .i and .s file

Compiling the attached bug.c with GCC 12.2.0 via

    gcc -m32 -O0 -c bug.c -mpreferred-stack-boundary=2

prints

during RTL pass: split1
bug.c: In function 'fun':
bug.c:23:1: internal compiler error: in assign_stack_local_1, at
function.cc:429
   23 | }
      | ^
0x6d3b9b assign_stack_local_1(machine_mode, poly_int<1u, long>, int, int)
        /ramdisk/aehle/gcc/gcc-obj/../gcc-12.2.0/gcc/function.cc:429
0xf81d50 assign_386_stack_local(machine_mode, ix86_stack_slot)
        /ramdisk/aehle/gcc/gcc-obj/../gcc-12.2.0/gcc/config/i386/i386.cc:16558
0x13bdd87 gen_split_65(rtx_insn*, rtx_def**)
        /ramdisk/aehle/gcc/gcc-obj/../gcc-12.2.0/gcc/config/i386/i386.md:5471
0x17d3e0a split_insns(rtx_def*, rtx_insn*)
        /ramdisk/aehle/gcc/gcc-obj/../gcc-12.2.0/gcc/config/i386/i386.md:15646
0x9295fe try_split(rtx_def*, rtx_insn*, int)
        /ramdisk/aehle/gcc/gcc-obj/../gcc-12.2.0/gcc/emit-rtl.cc:3795
0xc01fb1 split_insn
        /ramdisk/aehle/gcc/gcc-obj/../gcc-12.2.0/gcc/recog.cc:3384
0xc072f2 split_all_insns()
        /ramdisk/aehle/gcc/gcc-obj/../gcc-12.2.0/gcc/recog.cc:3488
0xc073e8 execute
        /ramdisk/aehle/gcc/gcc-obj/../gcc-12.2.0/gcc/recog.cc:4406
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

We have attached:
- the stdout/stderr output with the additional flag -v,
- the preprocessed source produced with -freport-bug, 
- the files bug.i and bug.s produced with -save-temps.

The GCC 12.2.0 build was configured only with a --prefix option. gcc -v shows

Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/ramdisk/aehle/gcc/gcc-install/bin/../libexec/gcc/x86_64-pc-linux-gnu/12.2.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /ramdisk/aehle/gcc/gcc-obj/../gcc-12.2.0/configure
--prefix=/ramdisk/aehle/gcc/gcc-obj/../gcc-install
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 12.2.0 (GCC) 

uname -a says "Linux <hostname> 5.4.0-122-generic #138-Ubuntu SMP Wed Jun 22
15:00:31 UTC 2022 x86_64 GNU/Linux". /proc/cpuinfo shows a list of 96 cores
with the model name "AMD EPYC 7F72 24-Core Processor". All of the above
commands were executed in a Singularity container based on Debian 11.3.

The source file is a minimal example condensed from Valgrind's m_libcbase.c.