ccc: Add option groups.
 - Simple mechanism for group together sets of options so the driver
   can efficiently deal with them as a group (i.e., for forwarding -i*
   to cc1).

 - Use to finish off the major missing pieces of Darwin/CC1 support.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62149 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed