[Bug tree-optimization/46009] ?: vectorized, very similar if is not

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46009

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2010-11-03 
15:18:55 UTC ---
Author: jakub
Date: Wed Nov  3 15:18:50 2010
New Revision: 166251

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=166251
Log:
    PR tree-optimization/46009
    * tree-ssa-phiopt.c (tree_ssa_phiopt_worker): Call
    cond_if_else_store_replacement if bb1 and bb2 have the same
    single successor.
    (cond_store_replacement): Use gimple_assign_single_p, don't
    check if rhs is SSA_NAME or invariant.  Call release_defs for
    assign.
    (cond_if_else_store_replacement): New function.

    * gcc.dg/vect/pr46009.c: New function.

Added:
    trunk/gcc/testsuite/gcc.dg/vect/pr46009.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-phiopt.c