gcc/

	* tree-hash-traits.h (tree_ssa_name_hasher): New class.
	* sese.c: Include tree-hash-traits.h.
	(rename_map_hasher): Use tree_ssa_name_hasher.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@224969 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 14 insertions, 0 deletions

diff --git a/gcc/tree-hash-traits.h b/gcc/tree-hash-traits.h
index 9a2fda7bac6..1f4364f591e 100644
--- a/gcc/tree-hash-traits.h
+++ b/gcc/tree-hash-traits.h
@@ -53,4 +53,18 @@ tree_decl_hash::hash (tree t)
   return DECL_UID (t);
 }
 
+/* Hash for SSA_NAMEs in the same function.  Pointer equality is enough
+   here, but the SSA_NAME_VERSION is a better hash than the pointer
+   value and gives a predictable traversal order.  */
+struct tree_ssa_name_hash : ggc_ptr_hash <tree_node>
+{
+  static inline hashval_t hash (tree);
+};
+
+inline hashval_t
+tree_ssa_name_hash::hash (tree t)
+{
+  return SSA_NAME_VERSION (t);
+}
+
 #endif