[Bug rtl-optimization/60268] New: [4.9 regression] ICE: in rank_for_schedule, at haifa-sched.c:2557

[dimhen at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60268

            Bug ID: 60268
           Summary: [4.9 regression] ICE: in rank_for_schedule, at
                    haifa-sched.c:2557
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dimhen at gmail dot com

r207791 PASS
r207850 FAIL

$ cat x.i
void f()
{
  int i = 0;
  void *p = 0;
}
$ /usr/local/gcc_current/bin/gcc -fpreprocessed -O0 -flive-range-shrinkage -c
x.i
x.i: In function 'f':
x.i:5:1: internal compiler error: in rank_for_schedule, at haifa-sched.c:2557
 }
 ^
0x13c6f41 rank_for_schedule
    /home/dimhen/src/gcc_current/gcc/haifa-sched.c:2557
0x13c7895 swap_sort
    /home/dimhen/src/gcc_current/gcc/haifa-sched.c:2714
0x13c7895 ready_sort(ready_list*)
    /home/dimhen/src/gcc_current/gcc/haifa-sched.c:2926
0x13d0727 schedule_block(basic_block_def**, void*)
    /home/dimhen/src/gcc_current/gcc/haifa-sched.c:6096
0xa1421a schedule_region
    /home/dimhen/src/gcc_current/gcc/sched-rgn.c:3080
0xa1421a schedule_insns
    /home/dimhen/src/gcc_current/gcc/sched-rgn.c:3416
0xa1461b schedule_insns
    /home/dimhen/src/gcc_current/gcc/sched-rgn.c:3401
0xa1461b rest_of_handle_live_range_shrinkage
    /home/dimhen/src/gcc_current/gcc/sched-rgn.c:3614
0xa1461b execute
    /home/dimhen/src/gcc_current/gcc/sched-rgn.c:3704
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.


Fedora 20/x64

$ /usr/local/gcc_current/bin/gcc -v
Using built-in specs.
COLLECT_GCC=/usr/local/gcc_current/bin/gcc
COLLECT_LTO_WRAPPER=/usr/local/gcc_current/libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /home/dimhen/src/gcc_current/configure
--prefix=/usr/local/gcc_current --enable-checking=yes,df,fold,rtl,tree
--enable-languages=c,c++,lto --enable-plugin --with-tune=native
--with-arch=native --enable-version-specific-runtime-libs --enable-static
--disable-multilib
Thread model: posix
gcc version 4.9.0 20140218 (experimental) [trunk revision 207850] (GCC)