[Bug rtl-optimization/67609] [5/6 Regression] Generates wrong code for SSE2 _mm_load_pd

[vmakarov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67609

--- Comment #27 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
(In reply to Vladimir Makarov from comment #25)
> So it would be nice to benchmark it.  I'll try to do this on
> Friday.

Practically every SPEC2000 benchmark failed to compile with this patch.  GCC
crashes in split2 pass with messages like this

Error: unrecognizable insn:
(insn 381 345 67 3 (set (subreg:V2DF (reg:DF 22 xmm1 [287]) 0)
        (xor:V2DF (subreg:V2DF (reg:DF 22 xmm1 [287]) 0)
            (mem/u/c:V2DF (symbol_ref/u:DI ("*.LC6") [flags 0x2]) [2  S16
A128]))) apsi.f:3324 -1
     (nil))
apsi.f:3336:0: internal compiler error: in extract_insn, at recog.c:2297
0x9b9848 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
        /home/cygnus/vmakarov/build1/trunk3/gcc/gcc/rtl-error.c:109
0x9b9879 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
        /home/cygnus/vmakarov/build1/trunk3/gcc/gcc/rtl-error.c:117
0x988907 extract_insn(rtx_insn*)
        /home/cygnus/vmakarov/build1/trunk3/gcc/gcc/recog.c:2297
0x988991 extract_insn_cached(rtx_insn*)
        /home/cygnus/vmakarov/build1/trunk3/gcc/gcc/recog.c:2188
0x7e3f5d cleanup_subreg_operands(rtx_insn*)
        /home/cygnus/vmakarov/build1/trunk3/gcc/gcc/final.c:3112
0x98638c split_insn
        /home/cygnus/vmakarov/build1/trunk3/gcc/gcc/recog.c:2910
0x98ab77 split_all_insns()
        /home/cygnus/vmakarov/build1/trunk3/gcc/gcc/recog.c:2964
0x98abd8 rest_of_handle_split_after_reload
        /home/cygnus/vmakarov/build1/trunk3/gcc/gcc/recog.c:3902
0x98abd8 execute
        /home/cygnus/vmakarov/build1/trunk3/gcc/gcc/recog.c:3931
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