[Bug middle-end/63422] New: [5.0 Regression] ICE in freqs_to_counts_path, at tree-ssa-threadupdate.c:981

[Bug middle-end/63422] New: [5.0 Regression] ICE in freqs_to_counts_path, at tree-ssa-threadupdate.c:981

[Joost.VandeVondele at mat dot ethz.ch]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63422

            Bug ID: 63422
           Summary: [5.0 Regression] ICE in freqs_to_counts_path, at
                    tree-ssa-threadupdate.c:981
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: Joost.VandeVondele at mat dot ethz.ch

In the one day between r215702 and 215747 trunk started failing to compile CP2K
with '-c -flto=jobserver -fprofile-use '. Several lto instances fail with:

/data/vjoost/gnu/cp2k/cp2k/makefiles/../src/core_ae.F:58:0: internal compiler
error: in freqs_to_counts_path, at tree-ssa-threadupdate.c:988
   SUBROUTINE build_core_ae(matrix_h, matrix_p, force, virial,
calculate_forces, use_virial, nder,&
 ^
0xb4e8c0 freqs_to_counts_path
        ../../gcc/gcc/tree-ssa-threadupdate.c:988
0xb4e8c0 ssa_fix_duplicate_block_edges(redirection_data*, ssa_local_info_t*)
        ../../gcc/gcc/tree-ssa-threadupdate.c:1061
0xb4f018 ssa_fixup_template_block
        ../../gcc/gcc/tree-ssa-threadupdate.c:1301
0xb4f018 traverse_noresize<ssa_local_info_t*, ssa_fixup_template_block>
        ../../gcc/gcc/hash-table.h:942
0xb4f018 traverse<ssa_local_info_t*, ssa_fixup_template_block>
        ../../gcc/gcc/hash-table.h:964
0xb4f018 thread_block_1
        ../../gcc/gcc/tree-ssa-threadupdate.c:1523
0xb4f4e0 thread_block
        ../../gcc/gcc/tree-ssa-threadupdate.c:1560
0xb4fd6e thread_through_all_blocks(bool)
        ../../gcc/gcc/tree-ssa-threadupdate.c:2279
0xbd86ed finalize_jump_threads
        ../../gcc/gcc/tree-vrp.c:9856
0xbd86ed execute_vrp
        ../../gcc/gcc/tree-vrp.c:10010

given the combination of lto and profile-use it will be difficult to generate a
testcase (other than building full cp2k with profile feedback, which is
somewhat involved).

[Bug middle-end/63422] [5.0 Regression] ICE in freqs_to_counts_path, at tree-ssa-threadupdate.c:981

[Joost.VandeVondele at mat dot ethz.ch]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63422

Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |Joost.VandeVondele at mat dot ethz
                   |                            |.ch, tejohnson at google dot com

--- Comment #1 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
I suspect this is caused by r215739

[Bug middle-end/63422] [5.0 Regression] ICE in freqs_to_counts_path, at tree-ssa-threadupdate.c:981

[tejohnson at google dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63422

--- Comment #2 from Teresa Johnson <tejohnson at google dot com> ---
Yes, this function is new in r215739. I will see if I can trigger it
tomorrow. If you have a smaller test case that would be great. Or even
if you can give me the gcda file and preprocessed source that will
help.

Teresa

On Tue, Sep 30, 2014 at 9:12 PM, Joost.VandeVondele at mat dot ethz.ch
<gcc-bugzilla@gcc.gnu.org> wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63422
>
> Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> changed:
>
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                  CC|                            |Joost.VandeVondele at mat dot ethz
>                    |                            |.ch, tejohnson at google dot com
>
> --- Comment #1 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
> I suspect this is caused by r215739
>
> --
> You are receiving this mail because:
> You are on the CC list for the bug.

[Bug middle-end/63422] [5.0 Regression] ICE in freqs_to_counts_path, at tree-ssa-threadupdate.c:981

[Joost.VandeVondele at mat dot ethz.ch]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63422

--- Comment #3 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
(In reply to Teresa Johnson from comment #2)
> Yes, this function is new in r215739. I will see if I can trigger it
> tomorrow. If you have a smaller test case that would be great. Or even
> if you can give me the gcda file and preprocessed source that will
> help.

this only happens with LTO, so I'm not sure there is easily a source file I can
provide (with ~1000 .gdca files).

I tried some smaller programs, but didn't see the problem yet.

[Bug middle-end/63422] [5.0 Regression] ICE in freqs_to_counts_path, at tree-ssa-threadupdate.c:981

[tejohnson at google dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63422

--- Comment #5 from Teresa Johnson <tejohnson at google dot com> ---
Thanks for the test case. Reproduced and looking at it.
Teresa

[Bug middle-end/63422] [5.0 Regression] ICE in freqs_to_counts_path, at tree-ssa-threadupdate.c:981

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63422

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |5.0

[Bug middle-end/63422] [5.0 Regression] ICE in freqs_to_counts_path, at tree-ssa-threadupdate.c:981

[Joost.VandeVondele at mat dot ethz.ch]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63422

Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> changed:

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

--- Comment #8 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
fixed in trunk