[Bug rtl-optimization/57447] New: [4.9 Regression] ICE on 435.gromacs from spec2006 after r199298

[izamyatin at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57447

            Bug ID: 57447
           Summary: [4.9 Regression] ICE on 435.gromacs from spec2006
                    after r199298
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: izamyatin at gmail dot com
                CC: vmakarov at redhat dot com
            Target: x86_64

Happens only on x86_64 with just "-O2 -ffast-math" flags:


comlib.c: In function 'put_serverbyte':
comlib.c:49:1: internal compiler error: in curr_insn_transform, at
lra-constraints.c:3007
 }
 ^
0x80d66b curr_insn_transform
        ../../gcc/lra-constraints.c:3006
0x80e2a4 lra_constraints(bool)
        ../../gcc/lra-constraints.c:3785
0x800bf4 lra(_IO_FILE*)
        ../../gcc/lra.c:2278
0x7c7688 do_reload
        ../../gcc/ira.c:4641
0x7c7688 rest_of_handle_reload
        ../../gcc/ira.c:4753