Implement preprocessor code completion where a macro name is expected,
e.g., after #ifdef/#ifndef or #undef, or inside a defined <macroname>
expression in a preprocessor conditional.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111954 91177308-0d34-0410-b5e6-96231b3b80d8
12 files changed