add hash_map class

gcc/

	* alloc-pool.c (alloc_pool_hash): Use hash_map instead of hash_table.
	* dominance.c (iterate_fix_dominators): Use hash_map instead of
	pointer_map.
	* hash-map.h: New file.
	* ipa-comdats.c: Use hash_map instead of pointer_map.
	* ipa.c: Likewise.
	* lto-section-out.c: Adjust.
	* lto-streamer.h: Replace pointer_map with hash_map.
	* symtab.c (verify_symtab): Likewise.
	* tree-ssa-strlen.c (decl_to_stridxlist_htab): Likewise.
	* tree-ssa-uncprop.c (val_ssa_equiv): Likewise.
	* tree-streamer.h: Likewise.
	* tree-streamer.c: Adjust.
	* pointer-set.h: Remove pointer_map.

gcc/lto/

	* lto.c (canonical_type_hash_cache): Use hash_map instead of
	pointer_map.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@211938 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 2 insertions, 6 deletions

diff --git a/gcc/lto-section-out.c b/gcc/lto-section-out.c
index 9d6926c57cf..00b18016a83 100644
--- a/gcc/lto-section-out.c
+++ b/gcc/lto-section-out.c
@@ -224,21 +224,17 @@ lto_output_decl_index (struct lto_output_stream *obs,
 		       struct lto_tree_ref_encoder *encoder,
 		       tree name, unsigned int *this_index)
 {
-  unsigned *slot;
-  unsigned int index;
   bool new_entry_p = FALSE;
   bool existed_p;
 
-  slot = encoder->tree_hash_table->insert (name, &existed_p);
+  unsigned int &index
+    = encoder->tree_hash_table->get_or_insert (name, &existed_p);
   if (!existed_p)
     {
       index = encoder->trees.length ();
-      *slot = index;
       encoder->trees.safe_push (name);
       new_entry_p = TRUE;
     }
-  else
-    index = *slot;
 
   if (obs)
     streamer_write_uhwi_stream (obs, index);