[Bug rtl-optimization/45570] [4.6 Regression] ICE: in cfg_preds_1, at sel-sched-ir.c:4584

[abel at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45570

--- Comment #6 from Andrey Belevantsev <abel at gcc dot gnu.org> 2011-04-07 
06:50:12 UTC ---
Author: abel
Date: Thu Apr  7 06:50:08 2011
New Revision: 172077

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=172077
Log:
        Backport from mainline
        2010-10-14  Andrey Belevantsev  <a...@ispras.ru>

        PR rtl-optimization/45570
        * sel-sched-ir.c (cfg_preds_1): When walking out of the region,
        assert that we are pipelining outer loops.  Allow returning
        zero predecessors.


Added:
    branches/gcc-4_5-branch/gcc/testsuite/gcc.dg/pr45570.c
Modified:
    branches/gcc-4_5-branch/gcc/ChangeLog
    branches/gcc-4_5-branch/gcc/sel-sched-ir.c
    branches/gcc-4_5-branch/gcc/testsuite/ChangeLog