2008-08-20 Richard Guenther <rguenther@suse.de>
* tree-vrp.c (found_in_subgraph): Remove.
(live): New global static.
(live_on_edge): New function.
(blocks_visited): Remove.
(register_edge_assert_for_2): Use live_on_edge.
(find_conditional_asserts): Remove code dealing with
found_in_subgraph. Do not walk the CFG.
(find_switch_asserts): Likewise.
(find_assert_locations_1): Renamed from find_assert_locations.
Move finding assert locations for conditional and switch
statements first. Update live bitmap. Do not walk the CFG.
(find_assert_locations): New function.
(insert_range_assertions): Remove entry of CFG walk.
Adjust call to find_assert_locations.
* tree-ssa-pre.c (do_regular_insertion): Ignore critical edges
that only can appear because of fake exit edges but assert we
never try to insert on those.
(fini_pre): Do not remove fake exit edges here...
(execute_pre): ...but here, before committing edge inserts.
* gcc.dg/tree-ssa/pr20701.c: Scan vrp1 dump.
* gcc.dg/tree-ssa/ssa-dom-thread-1.c: Pass -fno-tree-vrp.
* gcc.dg/tree-ssa/ssa-pre-20.c: New testcase.
From-SVN: r139263
