Added an early implementation of Live-Variables analysis built on
source-level CFGs.  This code may change significantly in the near
future as we explore different means to implement dataflow analyses.

Added a driver option, -dump-live-variables, to view the output of
live variable analysis.  This output is very ALPHA; it will be improved shortly.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@41737 91177308-0d34-0410-b5e6-96231b3b80d8
8 files changed