[Bug target/84899] New: ICE: in final_scan_insn_1, at final.c:3139 (error: could not split insn)

["asolokha at gmx dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84899

            Bug ID: 84899
           Summary: ICE: in final_scan_insn_1, at final.c:3139 (error:
                    could not split insn)
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
  Target Milestone: ---
            Target: powerpc-*-linux-gnu, powerpcspe-*-linux-gnu

gcc-8.0.0-alpha20180311 snapshot (r258438) ICEs when compiling the following
snippet w/ -O1 (-Og) -funroll-all-loops -fno-move-loop-invariants for BE
powerpc targets:

#include <limits.h>

void
r7 (int kp)
{
  int ji = 1 / kp, dz = 0;

  while ((ji + dz + 1) < kp)
    dz = INT_MAX;
}

% powerpc-e300c3-linux-gnu-gcc-8.0.0-alpha20180311 -O1 -funroll-all-loops
-fno-move-loop-invariants -c kixnpbrv.c
kixnpbrv.c: In function 'r7':
kixnpbrv.c:11:1: error: could not split insn
 }
 ^
(insn 119 28 24 (set (reg:SI 5 5 [orig:129 dz ] [129])
        (const_int 2147483648 [0x80000000])) "kixnpbrv.c":9 503
{*movsi_internal1}
     (nil))
during RTL pass: final
kixnpbrv.c:11:1: internal compiler error: in final_scan_insn_1, at final.c:3139
0x556070 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180311/work/gcc-8-20180311/gcc/rtl-error.c:108
0x8997ef final_scan_insn_1
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180311/work/gcc-8-20180311/gcc/final.c:3139
0x899b77 final_scan_insn(rtx_insn*, _IO_FILE*, int, int, int*)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180311/work/gcc-8-20180311/gcc/final.c:3218
0x899d07 final_1
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180311/work/gcc-8-20180311/gcc/final.c:2088
0x89ac27 rest_of_handle_final
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180311/work/gcc-8-20180311/gcc/final.c:4671
0x89ac27 execute
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180311/work/gcc-8-20180311/gcc/final.c:4745