Added "symbol iterators" for RValues, allowing easy iteration over the symbols
referenced by an RValue, instead of having to query the type of the RValue.

Modified ValueState::RemoveDeadBindings to also prune dead symbols.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@47142 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed