[cfe-commits] r59173 - /cfe/trunk/include/clang/AST/TypeOrdering.h

[Douglas Gregor]

Author: dgregor
Date: Wed Nov 12 15:52:20 2008
New Revision: 59173

URL: http://llvm.org/viewvc/llvm-project?rev=59173&view=rev
Log:
Slightly improve type hash

Modified:
    cfe/trunk/include/clang/AST/TypeOrdering.h

Modified: cfe/trunk/include/clang/AST/TypeOrdering.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/TypeOrdering.h?rev=59173&r1=59172&r2=59173&view=diff

==============================================================================
--- cfe/trunk/include/clang/AST/TypeOrdering.h (original)
+++ cfe/trunk/include/clang/AST/TypeOrdering.h Wed Nov 12 15:52:20 2008
@@ -42,7 +42,8 @@
     }
 
     static unsigned getHashValue(clang::QualType Val) {
-      return (unsigned)Val.getAsOpaquePtr();
+      return (unsigned)Val.getAsOpaquePtr() ^
+             ((unsigned)Val.getAsOpaquePtr() >> 9);
     }
 
     static bool isEqual(clang::QualType LHS, clang::QualType RHS) {