Avoid calling getSpelling at all for identifiers, which are
trivial to handle and very very common.  This speeds up -E on 
447.dealII by 2.5%


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@40422 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed