[Bug tree-optimization/51030] PHI opt does not handle value-replacement with a transfer function

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51030

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-11-10 12:24:56 UTC ---
Author: rguenth
Date: Thu Nov 10 12:24:52 2011
New Revision: 181254

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=181254
Log:
2011-11-10  Richard Guenther  <rguenther@suse.de>

    PR tree-optimization/51030
    * tree-ssa-phiopt.c (jump_function_from_stmt): New function.
    (value_replacement): Use it to handle trivial non-empty
    intermediate blocks.

    * gcc.dg/tree-ssa/phi-opt-6.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/phi-opt-6.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-phiopt.c