https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111702

            Bug ID: 111702
           Summary: [14 Regression] ICE: in insert_regs, at cse.cc:1114
                    with -O2 -fstack-protector-all -frounding-math
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zsojka at seznam dot cz
  Target Milestone: ---
              Host: x86_64-pc-linux-gnu
            Target: aarch64-unknown-linux-gnu

Created attachment 56055
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56055&action=edit
reduced testcase

Compiler output:
$ aarch64-unknown-linux-gnu-gcc -O2 -fstack-protector-all -frounding-math
testcase.c -w
during RTL pass: cse2
testcase.c: In function 'foo':
testcase.c:108:1: internal compiler error: in insert_regs, at cse.cc:1114
  108 | }
      | ^
0xb01a00 insert_regs
        /repo/gcc-trunk/gcc/cse.cc:1114
0x1e0237e merge_equiv_classes
        /repo/gcc-trunk/gcc/cse.cc:1758
0x1e08d85 cse_insn
        /repo/gcc-trunk/gcc/cse.cc:4780
0x1e0ca53 cse_extended_basic_block
        /repo/gcc-trunk/gcc/cse.cc:6557
0x1e0ca53 cse_main
        /repo/gcc-trunk/gcc/cse.cc:6702
0x1e0d470 rest_of_handle_cse2
        /repo/gcc-trunk/gcc/cse.cc:7600
0x1e0d470 execute
        /repo/gcc-trunk/gcc/cse.cc:7655
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.

$ aarch64-unknown-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-aarch64/bin/aarch64-unknown-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r14-4413-20231005141000-g1f7295af602-checking-yes-rtl-df-extra-aarch64/bin/../libexec/gcc/aarch64-unknown-linux-gnu/14.0.0/lto-wrapper
Target: aarch64-unknown-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl
--with-sysroot=/usr/aarch64-unknown-linux-gnu --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=aarch64-unknown-linux-gnu
--with-ld=/usr/bin/aarch64-unknown-linux-gnu-ld
--with-as=/usr/bin/aarch64-unknown-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r14-4413-20231005141000-g1f7295af602-checking-yes-rtl-df-extra-aarch64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20231005 (experimental) (GCC)

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