r178699 - [preprocessor] Minor optimization following r178671.

[Argyrios Kyrtzidis]

Author: akirtzidis
Date: Wed Apr  3 16:29:07 2013
New Revision: 178699

URL: http://llvm.org/viewvc/llvm-project?rev=178699&view=rev
Log:
[preprocessor] Minor optimization following r178671.

Don't bother looking for parameter index of 'B' token if 'A' is not a parameter.

Modified:
    cfe/trunk/lib/Lex/MacroInfo.cpp

Modified: cfe/trunk/lib/Lex/MacroInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Lex/MacroInfo.cpp?rev=178699&r1=178698&r2=178699&view=diff
==============================================================================
--- cfe/trunk/lib/Lex/MacroInfo.cpp (original)
+++ cfe/trunk/lib/Lex/MacroInfo.cpp Wed Apr  3 16:29:07 2013
@@ -110,8 +110,9 @@ bool MacroInfo::isIdenticalTo(const Macr
       // With syntactic equivalence the parameter names can be different as long
       // as they are used in the same place.
       int AArgNum = getArgumentNum(A.getIdentifierInfo());
-      int BArgNum = Other.getArgumentNum(B.getIdentifierInfo());
-      if (AArgNum == -1 || AArgNum != BArgNum)
+      if (AArgNum == -1)
+        return false;
+      if (AArgNum != Other.getArgumentNum(B.getIdentifierInfo()))
         return false;
       continue;
     }