[Bug tree-optimization/38513] Only postreload will remove a no-op store

[rguenth at gcc dot gnu dot org]

------- Comment #8 from rguenth at gcc dot gnu dot org  2009-03-28 10:11 -------
Subject: Bug 38513

Author: rguenth
Date: Sat Mar 28 10:11:14 2009
New Revision: 145172

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=145172
Log:
2009-03-28  Richard Guenther  <rguent...@suse.de>

        PR tree-optimization/38513
        * tree-ssa-pre.c (eliminate): Remove redundant stores.
        * tree-ssa-sccvn.c (copy_reference_ops_from_ref): Handle
        EXC_PTR_EXPR and FILTER_EXPR.
        (get_ref_from_reference_ops): Likewise.

        * gcc.dg/tree-ssa/ssa-fre-21.c: New testcase.
        * gcc.dg/tree-ssa/ssa-dse-11.c: Adjust.
        * gcc.dg/vect/vect-reduc-dot-u8a.c: Likewise.
        * gcc.dg/vect/vect-reduc-dot-u8b.c: Likewise.
        * gcc.dg/vect/slp-widen-mult-u8.c: Likewise.
        * gcc.dg/vect/vect-multitypes-16.c: Likewise.
        * gcc.dg/vect/vect-35.c: Likewise.
        * gcc.dg/vect/wrapv-vect-reduc-dot-s8b.c: Likewise.
        * gcc.dg/vect/vect-multitypes-17.c: Likewise.
        * gcc.dg/vect/slp-widen-mult-s16.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-21.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-11.c
    trunk/gcc/testsuite/gcc.dg/vect/slp-widen-mult-s16.c
    trunk/gcc/testsuite/gcc.dg/vect/slp-widen-mult-u8.c
    trunk/gcc/testsuite/gcc.dg/vect/vect-35.c
    trunk/gcc/testsuite/gcc.dg/vect/vect-multitypes-16.c
    trunk/gcc/testsuite/gcc.dg/vect/vect-multitypes-17.c
    trunk/gcc/testsuite/gcc.dg/vect/vect-reduc-dot-u8a.c
    trunk/gcc/testsuite/gcc.dg/vect/vect-reduc-dot-u8b.c
    trunk/gcc/testsuite/gcc.dg/vect/wrapv-vect-reduc-dot-s8b.c
    trunk/gcc/tree-ssa-pre.c
    trunk/gcc/tree-ssa-sccvn.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38513