[Bug rtl-optimization/63491] Ice in LRA with simple vector test case on power

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63491

--- Comment #6 from Peter Bergner <bergner at gcc dot gnu.org> ---
(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.
>From gcc-bugs-return-477729-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 18 21:24:58 2015
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Subject: [Bug ipa/65028] [5 Regression] 450.soplex in SPEC CPU 2006 is miscompiled
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https://gcc.gnu.org/bugzilla/show_bug.cgi?ide028

--- Comment #38 from Jan Hubicka <hubicka at ucw dot cz> ---
OK. Though I do not directly see how it can solve this wrong code issue.