PTH: Added minor 'sibling jumping' optimization for iterating over the side table used for fast preprocessor block skipping.  This has a minor performance improvement when preprocessing Cocoa.h, but can have some wins in pathologic cases.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60966 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed