2008-08-21 Richard Guenther <rguenther@suse.de>
commitbfcf04b8d058ecf9917f67a8451cc5be169a9649
authorrguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
Thu, 21 Aug 2008 15:18:58 +0000 (21 15:18 +0000)
committerrguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
Thu, 21 Aug 2008 15:18:58 +0000 (21 15:18 +0000)
treed081e2983bcdcea812e826d40060ea64e94eb58a
parentb0464d7cbaef4239f9a240023309d48634f91a8e
2008-08-21  Richard Guenther  <rguenther@suse.de>

* tree-ssa-pre.c (insert_into_preds_of_block): Before inserting
a PHI ask VN if it is already available.
* tree-ssa-sccvn.h (vn_phi_lookup): Declare.
* tree-ssa-sccvn.c (vn_phi_lookup): Export.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@139388 138bc75d-0d04-0410-961f-82ee72b054a4
gcc/ChangeLog
gcc/tree-ssa-pre.c
gcc/tree-ssa-sccvn.c
gcc/tree-ssa-sccvn.h