[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 #4 from Andrey Belevantsev <abel at gcc dot gnu.org> 2010-10-14 
07:56:50 UTC ---
Author: abel
Date: Thu Oct 14 07:56:47 2010
New Revision: 165454

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=165454
Log:
    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.
    * gcc.dg/pr45570.c: New test. 

Added:
    trunk/gcc/testsuite/gcc.dg/pr45570.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/sel-sched-ir.c
    trunk/gcc/testsuite/ChangeLog