[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 #4 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Fri Jan 15 22:32:05 2016
New Revision: 232453

URL: https://gcc.gnu.org/viewcvs?rev=232453&root=gcc&view=rev
Log:
        PR tree-optimization/69270
        * tree-ssanames.c (ssa_name_has_boolean_range): Moved here from
        tree-ssa-dom.c.  Improve test for [0..1] ranve from VRP.
        * tree-ssa-dom.c (ssa_name_has_boolean_range): Remove.
        * tree-ssanames.h (ssa_name_has_boolean_range): Prototype.
        * tree-ssa-uncprop.c (associate_equivalences_with_edges): Use
        ssa_name_has_boolean_range and constant_boolean_node.

        PR tree-optimization/69270
        * gcc.dg/tree-ssa/pr69270-2.c: New test.
        * gcc.dg/tree-ssa/pr69270-3.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr69270-2.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr69270-3.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-dom.c
    trunk/gcc/tree-ssa-uncprop.c
    trunk/gcc/tree-ssanames.c
    trunk/gcc/tree-ssanames.h