[llvm-commits] [llvm] r40983 - /llvm/trunk/include/llvm/ADT/SmallVector.h

[Chris Lattner]

Author: lattner
Date: Fri Aug 10 01:54:38 2007
New Revision: 40983

URL: http://llvm.org/viewvc/llvm-project?rev=40983&view=rev
Log:
small speedup in the case where a smallvector is default ctor'd from
an empty vector.  This speeds up llc slightly.

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

Modified: llvm/trunk/include/llvm/ADT/SmallVector.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/ADT/SmallVector.h?rev=40983&r1=40982&r2=40983&view=diff

==============================================================================
--- llvm/trunk/include/llvm/ADT/SmallVector.h (original)
+++ llvm/trunk/include/llvm/ADT/SmallVector.h Fri Aug 10 01:54:38 2007
@@ -455,7 +455,8 @@
   }
   
   SmallVector(const SmallVector &RHS) : SmallVectorImpl<T>(NumTsAvailable) {
-    operator=(RHS);
+    if (!RHS.empty())
+      operator=(RHS);
   }
   
   const SmallVector &operator=(const SmallVector &RHS) {