[Bug tree-optimization/69270] DOM should exploit range information to create more equivalences

[law at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69270

--- Comment #1 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Thu Jan 14 07:38:18 2016
New Revision: 232361

URL: https://gcc.gnu.org/viewcvs?rev=232361&root=gcc&view=rev
Log:
[PATCH][PR tree-optimization/69270] Exploit VRP information in DOM

        PR tree-optimization/69270
        * tree-ssa-dom.c (ssa_name_has_boolean_range): New function.
        (record_edge_info): Use it.  Convert boolean_{true,false}_node
        to the type of op0.

        PR tree-optimization/69270
        * gcc.dg/tree-ssa/pr69270.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr69270.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-dom.c