From: Benjamin Kramer <benny.kra@googlemail.com>
Date: Wed, 25 Apr 2012 18:21:27 +0000 (+0000)
Subject: Use a SmallMap for StoredDeclsMap, it's usually sparsely populated so we can avoid... 
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=0d62709c6e9b33dce788e0c0fa3cd5c7f4d637d0;p=clang

Use a SmallMap for StoredDeclsMap, it's usually sparsely populated so we can avoid initializing memory for 64 buckets.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@155571 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/clang/AST/DeclContextInternals.h b/include/clang/AST/DeclContextInternals.h
index c5f2aa0b84..9a70f9d405 100644
--- a/include/clang/AST/DeclContextInternals.h
+++ b/include/clang/AST/DeclContextInternals.h
@@ -17,8 +17,8 @@
 #include "clang/AST/Decl.h"
 #include "clang/AST/DeclarationName.h"
 #include "clang/AST/DeclCXX.h"
-#include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/PointerUnion.h"
+#include "llvm/ADT/SmallMap.h"
 #include "llvm/ADT/SmallVector.h"
 #include <algorithm>
 
@@ -196,7 +196,7 @@ public:
 };
 
 class StoredDeclsMap
-  : public llvm::DenseMap<DeclarationName, StoredDeclsList> {
+  : public llvm::SmallMap<DeclarationName, StoredDeclsList, 4> {
 
 public:
   static void DestroyAll(StoredDeclsMap *Map, bool Dependent);