------- Comment #22 from jakub at gcc dot gnu dot org 2010-06-25 12:11 ------- Subject: Bug 43866
Author: jakub Date: Fri Jun 25 12:10:42 2010 New Revision: 161375 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=161375 Log: PR middle-end/43866 * tree-ssa-loop-unswitch.c (tree_may_unswitch_on): If stmt is always true or always false, return NULL_TREE. (tree_unswitch_single_loop): Optimize conditions even when reaching max-unswitch-level parameter. If num > 0, optimize first all conditions using entry checks, then do still reachable block discovery and consider only conditions in still reachable basic blocks in the loop. * gfortran.dg/pr43866.f90: New test. Added: trunk/gcc/testsuite/gfortran.dg/pr43866.f90 Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-loop-unswitch.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43866
