[Bug tree-optimization/31657] Should combine bit tests in if stmts

["rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #1 from rguenth at gcc dot gnu dot org  2007-06-12 12:06 -------
Subject: Bug 31657

Author: rguenth
Date: Tue Jun 12 12:06:19 2007
New Revision: 125644

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=125644
Log:
2007-06-12  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/15353
        PR tree-optimization/31657
        * passes.c (init_optimization_passes): Add pass_tree_ifcombine.
        * timevar.def: Add TV_TREE_IFCOMBINE.
        * tree-pass.h (pass_tree_ifcombine): Declare.
        * tree-ssa-ifcombine.c: New file.
        * tree-ssa-phiopt.c (blocks_in_phiopt_order): Export.
        * tree-flow.h (blocks_in_phiopt_order): Declare.
        * Makefile.in (OBJS-common): Add tree-ssa-ifcombine.o.
        (tree-ssa-ifcombine.o): New dependencies.

        * gcc.c-torture/execute/20070424-1.c: New testcase.
        * gcc.dg/tree-ssa/ssa-ifcombine-1.c: Likewise.
        * gcc.dg/tree-ssa/ssa-ifcombine-2.c: Likewise.
        * gcc.dg/tree-ssa/ssa-ifcombine-3.c: Likewise.
        * gcc.dg/tree-ssa/ssa-ifcombine-4.c: Likewise.
        * gcc.dg/tree-ssa/ssa-ifcombine-5.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/20070424-1.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-ifcombine-1.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-ifcombine-2.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-ifcombine-3.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-ifcombine-4.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-ifcombine-5.c
    trunk/gcc/tree-ssa-ifcombine.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/Makefile.in
    trunk/gcc/passes.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/timevar.def
    trunk/gcc/tree-flow.h
    trunk/gcc/tree-pass.h
    trunk/gcc/tree-ssa-phiopt.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31657