[Bug target/86107] New: ICE: in ix86_mitigate_rop, at config/i386/i386.c:42301 with -O -funroll-loops -mavx5124fmaps -mmitigate-rop --param=hot-bb-frequency-fraction=1

["zsojka at seznam dot cz" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86107

            Bug ID: 86107
           Summary: ICE: in ix86_mitigate_rop, at config/i386/i386.c:42301
                    with -O -funroll-loops -mavx5124fmaps -mmitigate-rop
                    --param=hot-bb-frequency-fraction=1
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zsojka at seznam dot cz
  Target Milestone: ---
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu

Created attachment 44258
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44258&action=edit
reduced testcase

Compiler output:
$ x86_64-pc-linux-gnu-gcc -O -funroll-loops -mavx5124fmaps -mmitigate-rop
--param=hot-bb-frequency-fraction=1 testcase.c 
during RTL pass: mach
testcase.c: In function 'foo':
testcase.c:16:1: internal compiler error: in ix86_mitigate_rop, at
config/i386/i386.c:42301
 }
 ^
0x71c826 ix86_mitigate_rop
        /repo/gcc-trunk/gcc/config/i386/i386.c:42301
0x71c826 ix86_reorg
        /repo/gcc-trunk/gcc/config/i386/i386.c:42404
0xd4c519 execute
        /repo/gcc-trunk/gcc/reorg.c:3975
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.


$ x86_64-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-261377-checking-yes-rtl-df-extra-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/9.0.0/lto-wrapper
Target: x86_64-pc-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 --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=x86_64-pc-linux-gnu
--with-ld=/usr/bin/x86_64-pc-linux-gnu-ld
--with-as=/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-261377-checking-yes-rtl-df-extra-amd64
Thread model: posix
gcc version 9.0.0 20180609 (experimental) (GCC)