allow storing values directly in hash tables

gcc/

	* hash-table.h: Add a template arg to choose between storing values
	and storing pointers to values, and then provide partial
	specializations for both.
	* tree-browser.c (tree_upper_hasher): Provide the type the hash table
	should store, not the type values should point to.
	* tree-into-ssa.c (var_info_hasher): Likewise.
	* tree-ssa-dom.c (expr_elt_hasher): Likewise.
	* tree-complex.c: Adjust.
	* tree-hasher.h (int_tree_hasher): store int_tree_map in the hash
	table instead of int_tree_map *.
	* tree-parloops.c: Adjust.
	* tree-ssa-reassoc.c (ocount_hasher): Don't lie to hash_map about what
	type is being stored.
	* tree-vectorizer.c: Adjust.

From-SVN: r211937

1 files changed, 7 insertions, 9 deletions

diff --git a/gcc/tree-complex.c b/gcc/tree-complex.c
index 7b0115d..3ed403a 100644
--- a/gcc/tree-complex.c
+++ b/gcc/tree-complex.c
@@ -83,10 +83,9 @@ static vec<tree> complex_ssa_name_components;
 static tree
 cvc_lookup (unsigned int uid)
 {
-  struct int_tree_map *h, in;
+  struct int_tree_map in;
   in.uid = uid;
-  h = complex_variable_components->find_with_hash (&in, uid);
-  return h ? h->to : NULL;
+  return complex_variable_components->find_with_hash (in, uid).to;
 }
 
 /* Insert the pair UID, TO into the complex_variable_components hashtable.  */
@@ -94,14 +93,13 @@ cvc_lookup (unsigned int uid)
 static void
 cvc_insert (unsigned int uid, tree to)
 {
-  struct int_tree_map *h;
-  int_tree_map **loc;
+  int_tree_map h;
+  int_tree_map *loc;
 
-  h = XNEW (struct int_tree_map);
-  h->uid = uid;
-  h->to = to;
+  h.uid = uid;
   loc = complex_variable_components->find_slot_with_hash (h, uid, INSERT);
-  *loc = h;
+  loc->uid = uid;
+  loc->to = to;
 }
 
 /* Return true if T is not a zero constant.  In the case of real values,