[Bug rtl-optimization/57410] New: [4.9 Regression] ICE: in emit_spill_move, at lra-constraints.c:863 with -fpeel-loops and uninitialised variable

[Bug rtl-optimization/57410] New: [4.9 Regression] ICE: in emit_spill_move, at lra-constraints.c:863 with -fpeel-loops and uninitialised variable

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57410

            Bug ID: 57410
           Summary: [4.9 Regression] ICE: in emit_spill_move, at
                    lra-constraints.c:863 with -fpeel-loops and
                    uninitialised variable
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zsojka at seznam dot cz

Created attachment 30187
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30187&action=edit
reduced testcase

Compiler output:
$ gcc -O -fpeel-loops testcase.c         
testcase.c: In function 'foo':
testcase.c:9:1: internal compiler error: in emit_spill_move, at
lra-constraints.c:863
 }
 ^
0x8f5567 emit_spill_move
        /mnt/svn/gcc-trunk/gcc/lra-constraints.c:862
0x8feb0d curr_insn_transform
        /mnt/svn/gcc-trunk/gcc/lra-constraints.c:3033
0x8ffc94 lra_constraints(bool)
        /mnt/svn/gcc-trunk/gcc/lra-constraints.c:3785
0x8ee8a3 lra(_IO_FILE*)
        /mnt/svn/gcc-trunk/gcc/lra.c:2278
0x8a1c78 do_reload
        /mnt/svn/gcc-trunk/gcc/ira.c:4641
0x8a1c78 rest_of_handle_reload
        /mnt/svn/gcc-trunk/gcc/ira.c:4753
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.

$ gcc -v                        
Using built-in specs.
COLLECT_GCC=/mnt/svn/gcc-trunk/binary-latest/bin/gcc
COLLECT_LTO_WRAPPER=/mnt/svn/gcc-trunk/binary-199312-lto-fortran-checking-yes-rtl-df/libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /mnt/svn/gcc-trunk//configure --enable-checking=yes,rtl,df
--enable-languages=c,c++,lto,fortran
--prefix=/mnt/svn/gcc-trunk/binary-199312-lto-fortran-checking-yes-rtl-df/
--without-cloog --without-ppl
Thread model: posix
gcc version 4.9.0 20130524 (experimental) (GCC) 

Tested revisions:
r199312 - fail
4.8 r198018 - OK

[Bug rtl-optimization/57410] [4.9 Regression] ICE: in emit_spill_move, at lra-constraints.c:863 with -fpeel-loops and uninitialised variable

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57410

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |vmakarov at gcc dot gnu.org
   Target Milestone|---                         |4.9.0

[Bug rtl-optimization/57410] [4.9 Regression] ICE: in emit_spill_move, at lra-constraints.c:863 with -fpeel-loops and uninitialised variable

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57410

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P1

[Bug rtl-optimization/57410] [4.9 Regression] ICE: in emit_spill_move, at lra-constraints.c:863 with -fpeel-loops and uninitialised variable

[vmakarov at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57410

--- Comment #1 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
I can not reproduce it on today trunk.  I guess it was fixed by some LRA patch
but I ca not say by what patch exactly as there were too many LRA patches since
May.

[Bug rtl-optimization/57410] [4.9 Regression] ICE: in emit_spill_move, at lra-constraints.c:863 with -fpeel-loops and uninitialised variable

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57410

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Likely fixed by r199764 (r199763 fails, r199769 works, no other commits that
could affect i?86/x86_64), likely introduced by r199298 (works r199200, fails
r199300).
Vlad, is there anything needed but to include the testcase into the testsuite
(will test it in the next bootstrap/regtest cycle)?

[Bug rtl-optimization/57410] [4.9 Regression] ICE: in emit_spill_move, at lra-constraints.c:863 with -fpeel-loops and uninitialised variable

[vmakarov at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57410

--- Comment #3 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Wed Nov 27 16:30:48 2013
New Revision: 205451

URL: http://gcc.gnu.org/viewcvs?rev=205451&root=gcc&view=rev
Log:
2013-11-27  Vladimir Makarov  <vmakarov@redhat.com>

    PR rtl-optimization/57410
    * gcc.target/i386/pr57410.c: New.


Added:
    trunk/gcc/testsuite/gcc.target/i386/pr57410.c

[Bug rtl-optimization/57410] [4.9 Regression] ICE: in emit_spill_move, at lra-constraints.c:863 with -fpeel-loops and uninitialised variable

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57410

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed then.