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[pf3gnuchains/gcc-fork.git] / gcc / tree-ssa-sccvn.h

diff --git a/gcc/tree-ssa-sccvn.h b/gcc/tree-ssa-sccvn.h
index 8f93b0b..bf99702 100644 (file)
--- a/gcc/tree-ssa-sccvn.h
+++ b/gcc/tree-ssa-sccvn.h
@@ -1,5 +1,5 @@
 /* Tree SCC value numbering
-   Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
    Contributed by Daniel Berlin <dberlin@dberlin.org>
 
    This file is part of GCC.
@@ -72,6 +72,8 @@ typedef const struct vn_phi_s *const_vn_phi_t;
 typedef struct vn_reference_op_struct
 {
   enum tree_code opcode;
+  /* Constant offset this op adds or -1 if it is variable.  */
+  HOST_WIDE_INT off;
   tree type;
   tree op0;
   tree op1;
@@ -163,11 +165,13 @@ typedef struct vn_ssa_aux
   unsigned needs_insertion : 1;
 } *vn_ssa_aux_t;
 
+typedef enum { VN_NOWALK, VN_WALK, VN_WALKREWRITE } vn_lookup_kind;
+
 /* Return the value numbering info for an SSA_NAME.  */
 extern vn_ssa_aux_t VN_INFO (tree);
 extern vn_ssa_aux_t VN_INFO_GET (tree);
 tree vn_get_expr_for (tree);
-bool run_scc_vn (bool);
+bool run_scc_vn (vn_lookup_kind);
 void free_scc_vn (void);
 tree vn_nary_op_lookup (tree, vn_nary_op_t *);
 tree vn_nary_op_lookup_stmt (gimple, vn_nary_op_t *);
@@ -187,8 +191,8 @@ bool ao_ref_init_from_vn_reference (ao_ref *, alias_set_type, tree,
                                    VEC (vn_reference_op_s, heap) *);
 tree vn_reference_lookup_pieces (tree, alias_set_type, tree,
                                 VEC (vn_reference_op_s, heap) *,
-                                vn_reference_t *, bool);
-tree vn_reference_lookup (tree, tree, bool, vn_reference_t *);
+                                vn_reference_t *, vn_lookup_kind);
+tree vn_reference_lookup (tree, tree, vn_lookup_kind, vn_reference_t *);
 vn_reference_t vn_reference_insert (tree, tree, tree);
 vn_reference_t vn_reference_insert_pieces (tree, alias_set_type, tree,
                                           VEC (vn_reference_op_s, heap) *,