2011-05-10 Richard Guenther <rguenther@suse.de>
* tree-ssa-forwprop.c (combine_conversions): Pattern-match
a series of conversions and apply foldings similar to what
fold-const does.
(tree_ssa_forward_propagate_single_use_vars): Call it.
* gcc.dg/tree-ssa/ssa-fre-2.c: Disable forwprop.
* gcc.dg/tree-ssa/ssa-fre-3.c: Likewise.
* gcc.dg/tree-ssa/ssa-fre-4.c: Likewise.
* gcc.dg/tree-ssa/ssa-fre-5.c: Likewise.
* gcc.dg/tree-ssa/scev-cast.c: Adjust. Note what transformation
applies.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@173612
138bc75d-0d04-0410-961f-
82ee72b054a4