[Bug tree-optimization/36009] PRE causes missed loop store motion, store sinking doesn't work

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2008-05-15 08:38 -------
Subject: Bug 36009

Author: rguenth
Date: Thu May 15 08:37:22 2008
New Revision: 135330

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=135330
Log:
2008-05-15  Richard Guenther  <[EMAIL PROTECTED]>

        PR tree-optimization/36009
        PR tree-optimization/36204
        * tree-ssa-loop-im.c (tree-ssa-propagate.h): Include.
        (determine_invariantness_stmt): Record the loop a store is
        always executed in.
        * Makefile.in (tree-ssa-loop-im.o): Add tree-ssa-propagate.h
        dependency.

        * gcc.dg/tree-ssa/ssa-lim-5.c: New testcase.
        * gcc.dg/tree-ssa/ssa-lim-6.c: Likewise..

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-lim-5.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-lim-6.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/Makefile.in
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-loop-im.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36009