[Bug target/85170] New: ICE: in final_scan_insn_1, at final.c:3139 (error: could not split insn)

[asolokha at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85170

            Bug ID: 85170
           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-valid-code
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
  Target Milestone: ---
            Target: powerpcspe-*-linux-gnu

gcc-8.0.0-alpha20180401 snapshot (r258999) ICEs when compiling the following
snippet w/ -O1 -fkeep-gc-roots-live -ftrapv -ftree-loop-vectorize
-fno-split-wide-types for a SPE target:

int
ae (int *ex, int ni)
{
  int it = 0;

  while (ni < 1)
    {
      it += ex[ni];
      ++ni;
    }

  return it;
}

% powerpc-e500v2-linux-gnuspe-gcc-8.0.0-alpha20180401 -O1 -fkeep-gc-roots-live
-ftrapv -ftree-loop-vectorize -fno-split-wide-types -c ywcbo250.c
ywcbo250.c: In function 'ae':
ywcbo250.c:13:1: error: could not split insn
 }
 ^
(insn 44 43 46 (set (reg:DI 28 28 [orig:195 vect__4.10 ] [195])
        (mem:DI (plus:SI (reg/f:SI 26 26 [orig:172 vectp.9 ] [172])
                (reg:SI 27 27 [orig:155 ivtmp.17 ] [155])) [0 MEM[base:
vectp.9_58, index: ivtmp.17_14, offset: 0B]+0 S8 A64])) 593 {*movdi_internal32}
     (nil))
during RTL pass: final
ywcbo250.c:13:1: internal compiler error: in final_scan_insn_1, at final.c:3139
0x54c424 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
       
/var/tmp/portage/cross-powerpc-e500v2-linux-gnuspe/gcc-8.0.0_alpha20180401/work/gcc-8-20180401/gcc/rtl-error.c:108
0x890bce final_scan_insn_1
       
/var/tmp/portage/cross-powerpc-e500v2-linux-gnuspe/gcc-8.0.0_alpha20180401/work/gcc-8-20180401/gcc/final.c:3139
0x890f37 final_scan_insn(rtx_insn*, _IO_FILE*, int, int, int*)
       
/var/tmp/portage/cross-powerpc-e500v2-linux-gnuspe/gcc-8.0.0_alpha20180401/work/gcc-8-20180401/gcc/final.c:3218
0x8910c7 final_1
       
/var/tmp/portage/cross-powerpc-e500v2-linux-gnuspe/gcc-8.0.0_alpha20180401/work/gcc-8-20180401/gcc/final.c:2088
0x891fe7 rest_of_handle_final
       
/var/tmp/portage/cross-powerpc-e500v2-linux-gnuspe/gcc-8.0.0_alpha20180401/work/gcc-8-20180401/gcc/final.c:4671
0x891fe7 execute
       
/var/tmp/portage/cross-powerpc-e500v2-linux-gnuspe/gcc-8.0.0_alpha20180401/work/gcc-8-20180401/gcc/final.c:4745