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[preprocessor] Minor optimization following r178671. 

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

llvm-svn: 178699
This commit is contained in:
Argyrios Kyrtzidis 2013-04-03 21:29:07 +00:00
parent c70fca60da
commit f0eaa64c98
1 changed files with 3 additions and 2 deletions
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5
clang/lib/Lex/MacroInfo.cpp
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@ -110,8 +110,9 @@ bool MacroInfo::isIdenticalTo(const MacroInfo &Other, Preprocessor &PP,
// 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;
}