[Bug target/58673] ICE in final_scan_insn for movti_ppc64 with base+offset address

["pthaugen at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58673

--- Comment #1 from Pat Haugen <pthaugen at gcc dot gnu.org> ---
Created attachment 30972
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30972&action=edit
testcase

Another similar example, but this one is on a store to memory instead of a
load. Reduced from CPU2006 benchmark 435.gromacs.

[pthaugen@igoo p8_spec_errors]$ /home/pthaugen/install/gcc/trunk/bin/gcc -c
-m64 -O3 -funroll-loops -mcpu=power8 do_gct.c 
...
do_gct.c:208:1: error: could not split insn
 }
 ^
(insn 90 93 94 (set (mem/c:TI (plus:DI (reg:DI 6 6)
                (const_int 368 [0x170])) [2 leg+0 S16 A128])
        (reg:TI 10 10 [423])) do_gct.c:93 508 {*movti_ppc64}
     (expr_list:REG_DEAD (reg:DI 6 6)
        (expr_list:REG_DEAD (reg:TI 10 10 [423])
            (nil))))
do_gct.c:208:1: internal compiler error: in final_scan_insn, at final.c:2949
0x105b23c3 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
    /home/pthaugen/src/gcc/trunk/gcc/gcc/rtl-error.c:109
0x1034ecfb final_scan_insn(rtx_def*, _IO_FILE*, int, int, int*)
    /home/pthaugen/src/gcc/trunk/gcc/gcc/final.c:2949
0x1034f1e7 final(rtx_def*, _IO_FILE*, int)
    /home/pthaugen/src/gcc/trunk/gcc/gcc/final.c:2019
0x1034f4df rest_of_handle_final
    /home/pthaugen/src/gcc/trunk/gcc/gcc/final.c:4424
0x1034f4df execute
    /home/pthaugen/src/gcc/trunk/gcc/gcc/final.c:4499
Please submit a full bug report,