https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63491
--- Comment #7 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
(In reply to Peter Bergner from comment #6)
> (In reply to Vladimir Makarov from comment #5)
> > Sorry, I can not reproduce the bug on the today trunk. Probably it was
> > fixed by numerous changes in LRA since Oct.
>
> This still fails for me today on my big endian system using revision 220792.
> Did you use the exact same compiler options I used?
>
>
> [bergner@makalu-lp1 LRA]$ cat pr63491.i
> typedef __int128_t __attribute__((__vector_size__(16))) vector_128_t;
> typedef unsigned long long scalar_64_t;
>
> vector_128_t
> foo (void)
> {
> union {
> scalar_64_t i64[2];
> vector_128_t v128;
> } u;
> u.i64[0] = 1;
> u.i64[1] = 2;
> return u.v128;
> }
> [bergner@makalu-lp1 LRA]$
> /home/bergner/gcc/build/gcc-fsf-mainline-pr63491/gcc/xgcc
> -B/home/bergner/gcc/build/gcc-fsf-mainline-pr63491/gcc -O1 -m64 -mcpu=power8
> -mlra -S pr63491.i
> pr63491.i: In function ‘foo’:
> pr63491.i:14:1: internal compiler error: in check_and_process_move, at
> lra-constraints.c:1170
> }
> ^
> 0x10994a7b check_and_process_move
> /home/bergner/gcc/gcc-fsf-mainline-pr63491/gcc/lra-constraints.c:1167
> 0x1099d45b curr_insn_transform
> /home/bergner/gcc/gcc-fsf-mainline-pr63491/gcc/lra-constraints.c:3463
> 0x109a1cdb lra_constraints(bool)
> /home/bergner/gcc/gcc-fsf-mainline-pr63491/gcc/lra-constraints.c:4451
> 0x1098221b lra(_IO_FILE*)
> /home/bergner/gcc/gcc-fsf-mainline-pr63491/gcc/lra.c:2292
> 0x109050d7 do_reload
> /home/bergner/gcc/gcc-fsf-mainline-pr63491/gcc/ira.c:5418
> 0x1090576f execute
> /home/bergner/gcc/gcc-fsf-mainline-pr63491/gcc/ira.c:5589
> Please submit a full bug report,
> with preprocessed source if appropriate.
I tried again the test on gcc rev. 221324 (Mar 10) with the mentioned options
and I've failed to reproduce the crash.
