[llvm-commits] [llvm] r157535 - /llvm/trunk/include/llvm/ADT/IntrusiveRefCntPtr.h

[Benjamin Kramer]

Author: d0k
Date: Sun May 27 11:22:08 2012
New Revision: 157535

URL: http://llvm.org/viewvc/llvm-project?rev=157535&view=rev
Log:
Move-enable IntrusiveRefCntPtr.

These tend to be copied around a lot, moving it instead saves a ton of memory
accesses.

Modified:
    llvm/trunk/include/llvm/ADT/IntrusiveRefCntPtr.h

Modified: llvm/trunk/include/llvm/ADT/IntrusiveRefCntPtr.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/ADT/IntrusiveRefCntPtr.h?rev=157535&r1=157534&r2=157535&view=diff
==============================================================================
--- llvm/trunk/include/llvm/ADT/IntrusiveRefCntPtr.h (original)
+++ llvm/trunk/include/llvm/ADT/IntrusiveRefCntPtr.h Sun May 27 11:22:08 2012
@@ -21,9 +21,8 @@
 #ifndef LLVM_ADT_INTRUSIVE_REF_CNT_PTR
 #define LLVM_ADT_INTRUSIVE_REF_CNT_PTR
 
-#include <cassert>
-
 #include "llvm/Support/Casting.h"
+#include "llvm/Support/Compiler.h"
 
 namespace llvm {
 
@@ -123,6 +122,17 @@
       retain();
     }
 
+#if LLVM_USE_RVALUE_REFERENCES
+    IntrusiveRefCntPtr(IntrusiveRefCntPtr&& S) : Obj(S.Obj) {
+      S.Obj = 0;
+    }
+
+    template <class X>
+    IntrusiveRefCntPtr(IntrusiveRefCntPtr<X>&& S) : Obj(S.getPtr()) {
+      S.Obj = 0;
+    }
+#endif
+
     template <class X>
     IntrusiveRefCntPtr(const IntrusiveRefCntPtr<X>& S)
       : Obj(S.getPtr()) {
@@ -134,6 +144,21 @@
       return *this;
     }
 
+#if LLVM_USE_RVALUE_REFERENCES
+    IntrusiveRefCntPtr& operator=(IntrusiveRefCntPtr&& S) {
+      Obj = S.Obj;
+      S.Obj = 0;
+      return *this;
+    }
+
+    template <class X>
+    IntrusiveRefCntPtr& operator=(IntrusiveRefCntPtr<X>&& S) {
+      Obj = S.getPtr();
+      S.Obj = 0;
+      return *this;
+    }
+#endif
+
     template <class X>
     IntrusiveRefCntPtr& operator=(const IntrusiveRefCntPtr<X>& S) {
       replace(S.getPtr());