Store unique IDs for identifiers in the PCH file. Use some bitmangling
so that we only need to perform the lookup and identifier resolution
once per identifier in the PCH file.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68846 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed