[Bug tree-optimization/67955] tree-dse does not use pointer info

[law at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67955

--- Comment #9 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Tue Dec  6 23:18:17 2016
New Revision: 243325

URL: https://gcc.gnu.org/viewcvs?rev=243325&root=gcc&view=rev
Log:
        PR tree-optimization/67955
        * tree-ssa-alias.c (same_addr_size_stores_p): New function.
        (stmt_kills_ref_p): Use it.

        PR tree-optimization/67955
        * gcc.dg/tree-ssa/dse-points-to.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/dse-points-to.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-alias.c