------- Comment #29 from hubicka at gcc dot gnu dot org 2010-04-06 15:18 ------- Subject: Bug 42906
Author: hubicka Date: Tue Apr 6 15:18:18 2010 New Revision: 158004 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=158004 Log: PR tree-optimization/42906 * tree-ssa-dce.c (mark_control_dependent_edges_necessary): Add IGNORE_SELF argument; set visited_control_parents for fully processed BBs. (find_obviously_necessary_stmts): Update call of mark_control_dependent_edges_necessary. (propagate_necessity): Likewise; handle PHI edges more curefully. * gcc.dg/tree-ssa/dce-1.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/tree-ssa/dce-1.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-dce.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42906
