http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55124
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> 2012-12-04 09:19:25 UTC --- Author: rguenth Date: Tue Dec 4 09:19:05 2012 New Revision: 194125 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=194125 Log: 2012-12-04 Richard Biener <rguent...@suse.de> PR tree-optimization/55124 * tree-ssa-pre.c (find_or_generate_expression): Instead of ICEing when we are not able to generate an expression defer it by signalling failure. Fix possible wrong-code issue by not picking random REFERENCE expressions as fallback. (create_component_ref_by_pieces_1): Adjust. Add failure paths. (create_expression_by_pieces): Likewise. (insert_into_preds_of_block): When expression generation failed for one edge make sure to not insert a PHI node. * gcc.dg/torture/pr55124.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/torture/pr55124.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-pre.c
