[Bug gcov-profile/59527] [4.9 Regression] ICE: in fixup_reorder_chain, at cfgrtl.c:3739 during PGO Firefox build

[tejohnson at google dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59527

--- Comment #8 from Teresa Johnson <tejohnson at google dot com> ---
I can't reproduce this one using your source/profles and command line
(using a trunk updated to head last night plus my fix for the assert).
I verified that splitting is kicking in, but no error occurs. Do you
want to generate and tar up the dumps, and I can try to figure out
what might be going on from that?

Thanks,
Teresa

On Tue, Dec 17, 2013 at 11:48 AM, trippels at gcc dot gnu.org
<gcc-bugzilla@gcc.gnu.org> wrote:
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59527
>
> --- Comment #6 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
> The testcase is too big to attach.
>
>  % wget trippelsdorf.de/testcase.tar.bz2
>  % tar xvjf testcase.tar.bz2
>  % g++ -w -nostdlib -r -flto=4 -fprofile-use -fprofile-correction
> -march=amdfam10 -fno-rtti -fno-exceptions -fno-math-errno -std=gnu++0x -pipe
> -O3 Unified_cpp_7.ii Unified_cpp_8.ii
>
> /var/tmp/mozilla-central/js/src/vm/Interpreter.cpp: In function ‘Interpret’:
> /var/tmp/mozilla-central/js/src/vm/Interpreter.cpp:3469:1: error: non-cold
> basic block 39 dominated by a block in the cold partition (2517)
>  }
>  ^
> /var/tmp/mozilla-central/js/src/vm/Interpreter.cpp:3469:1: internal compiler
> error: verify_flow_info failed
> 0x5a1ecd verify_flow_info()
>         ../../gcc/gcc/cfghooks.c:260
> 0x5b4ee2 cfg_layout_finalize()
>         ../../gcc/gcc/cfgrtl.c:4286
> 0xd44662 duplicate_computed_gotos
>         ../../gcc/gcc/bb-reorder.c:2492
> 0xd44662 execute
>         ../../gcc/gcc/bb-reorder.c:2524
> 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.
> make: *** [/tmp/ccvLwfUA.ltrans0.ltrans.o] Error 1
>
> --
> You are receiving this mail because:
> You are on the CC list for the bug.