[Bug tree-optimization/45685] [4.7/4.8/4.9 Regression] missed conditional move opportunity in loop

[law at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45685

--- Comment #27 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Fri Dec 13 16:34:39 2013
New Revision: 205963

URL: http://gcc.gnu.org/viewcvs?rev=205963&root=gcc&view=rev
Log:
    PR tree-optimization/45685
    * tree-ssa-phiopt.c (neg_replacement): New function.
    (tree_ssa_phiopt_worker): Call it.

    PR tree-optimization/45685
    * gcc.dg/tree-ssa/pr45685.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr45685.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-phiopt.c