[Bug tree-optimization/45122] [4.6 Regression] -funsafe-loop-optimizations causes FAIL: gcc.c-torture/execute/pr27285.c execution

[aoliva at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45122

--- Comment #18 from Alexandre Oliva <aoliva at gcc dot gnu.org> 2011-02-03 
06:01:43 UTC ---
Author: aoliva
Date: Thu Feb  3 06:01:40 2011
New Revision: 169781

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=169781
Log:
gcc/ChangeLog:
PR tree-optimization/45122
* tree-ssa-loop-niter.c (number_of_iterations_exit): Don't make
unsafe assumptions when there's more than one loop exit.
gcc/testsuite/ChangeLog:
PR tree-optimization/45122
* gcc.dg/tree-ssa/pr45122.c: New.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr45122.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-loop-niter.c