[Bug target/48273] [4.6 Regression] ICE: in create_copy_of_insn_rtx, at sel-sched-ir.c:5604 with -fsel-sched-pipelining -fselective-scheduling2 -march=core2

["amonakov at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48273

--- Comment #10 from Alexander Monakov <amonakov at gcc dot gnu.org> 2011-06-28 12:19:23 UTC ---
Author: amonakov
Date: Tue Jun 28 12:19:18 2011
New Revision: 175581

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=175581
Log:
    Backport from mainline
    2011-04-08  Alexander Monakov  <amonakov@ispras.ru>

    PR target/48273
    * cfgloop.h (loop_has_exit_edges): New helper.
    * sel-sched-ir.c (init_global_and_expr_for_insn): Make CALLs
    non-clonable.
    * sel-sched.c (sel_setup_region_sched_flags): Don't pipeline loops
    that have no exit edges.

    * g++.dg/opt/pr48273.C: New.


Added:
    branches/gcc-4_6-branch/gcc/testsuite/g++.dg/opt/pr48273.C
Modified:
    branches/gcc-4_6-branch/gcc/ChangeLog
    branches/gcc-4_6-branch/gcc/cfgloop.h
    branches/gcc-4_6-branch/gcc/sel-sched-ir.c
    branches/gcc-4_6-branch/gcc/sel-sched.c
    branches/gcc-4_6-branch/gcc/testsuite/ChangeLog