[cfe-commits] r147055 - /cfe/trunk/lib/Serialization/ASTReaderDecl.cpp

[Douglas Gregor]

Author: dgregor
Date: Wed Dec 21 09:12:03 2011
New Revision: 147055

URL: http://llvm.org/viewvc/llvm-project?rev=147055&view=rev
Log:
Implement a trivial, obvious optimization for deserialization of
redeclaration chains: only ever have the reader search for
redeclarations of the first (canonical) declaration, since we only
ever record redeclaration ranges for the that declaration. Searching
for redeclarations of non-canonical declarations will never find
anything, so it's a complete waste of time.

Modified:
    cfe/trunk/lib/Serialization/ASTReaderDecl.cpp

Modified: cfe/trunk/lib/Serialization/ASTReaderDecl.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Serialization/ASTReaderDecl.cpp?rev=147055&r1=147054&r2=147055&view=diff
==============================================================================
--- cfe/trunk/lib/Serialization/ASTReaderDecl.cpp (original)
+++ cfe/trunk/lib/Serialization/ASTReaderDecl.cpp Wed Dec 21 09:12:03 2011
@@ -1416,8 +1416,8 @@
   }
 
   // Note that we need to load the other declaration chains for this ID.
-  if (Reader.PendingDeclChainsKnown.insert(ThisDeclID))
-    Reader.PendingDeclChains.push_back(ThisDeclID);
+  if (Reader.PendingDeclChainsKnown.insert(FirstDeclID))
+    Reader.PendingDeclChains.push_back(FirstDeclID);
 }
 
 //===----------------------------------------------------------------------===//