http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49218
--- Comment #8 from Mikael Pettersson <mikpe at it dot uu.se> 2011-05-30 09:00:46 UTC --- Triggered by r163724: Author: rguenth Date: Wed Sep 1 11:39:55 2010 New Revision: 163724 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=163724 Log: 2010-09-01 Richard Guenther <rguent...@suse.de> * tree-vrp.c (adjust_range_with_scev): Use number of iteration estimate. (vrp_visit_phi_node): Delay using SCEV till we balloon the range. (execute_vrp): Compute number of iteration estimates. * cfgloop.h (estimate_numbers_of_iterations_loop): Adjust prototype. * tree-flow.h (estimate_numbers_of_iterations): Likewise. * tree-data-ref.c (estimated_loop_iterations): Adjust. * tree-ssa-loop-niter.c (estimate_numbers_of_iterations_loop): Infer loop bounds from undefined behavior based on a new parameter. (estimate_numbers_of_iterations): Likewise. (scev_probably_wraps_p): Adjust. * tree-ssa-loop.c (tree_ssa_loop_bounds): Likewise. The original C++ test case stopped failing on trunk with r171450: Author: rguenth Date: Fri Mar 25 11:59:19 2011 New Revision: 171450 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=171450 Log: 2011-03-25 Richard Guenther <rguent...@suse.de> * passes.c (init_optimization_passes): Add FRE pass after early SRA. but that's accidental: the C test case still fails after this, and the C++ one fails if compiled with -O2 -fno-tree-fre.
