[Bug rtl-optimization/88347] New: ICE in begin_move_insn, at sched-ebb.c:175

[asolokha at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88347

            Bug ID: 88347
           Summary: ICE in begin_move_insn, at sched-ebb.c:175
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
  Target Milestone: ---
            Target: powerpc-*-linux-gnu

gcc-9.0.0-alpha20181202 snapshot (r266729) ICEs when compiling
gcc/testsuite/gcc.target/powerpc/ppc-switch-2.c w/ -mcpu=603e -O1
-fsched-stalled-insns -fsched2-use-superblocks -fschedule-insns2 -fno-dce
-fno-guess-branch-probability --param max-cse-insns=4:

% powerpc-e300c3-linux-gnu-gcc-9.0.0-alpha20181202 -mcpu=603e -O1
-fsched-stalled-insns -fsched2-use-superblocks -fschedule-insns2 -fno-dce
-fno-guess-branch-probability --param max-cse-insns=4 -c
gcc/testsuite/gcc.target/powerpc/ppc-switch-2.c
during RTL pass: sched2                                                         
gcc/testsuite/gcc.target/powerpc/ppc-switch-2.c: In function 'test_switch':
gcc/testsuite/gcc.target/powerpc/ppc-switch-2.c:32:1: internal compiler error:
in begin_move_insn, at sched-ebb.c:175
   32 | }
      | ^
0x759da8 begin_move_insn
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/sched-ebb.c:175
0x145ec0b commit_schedule
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/haifa-sched.c:6228
0x1469a90 schedule_block(basic_block_def**, void*)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/haifa-sched.c:7065
0x14f47e9 schedule_ebb(rtx_insn*, rtx_insn*, bool)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/sched-ebb.c:537
0x14f4f64 schedule_ebbs()
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/sched-ebb.c:657
0xcc2eac rest_of_handle_sched2
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/sched-rgn.c:3738
0xcc2eac execute
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/sched-rgn.c:3876