[PATCH] clang-cl: Implement the /Tc, /TC, /Tp and /TP options

[Reid Kleckner]

  LGTM


================
Comment at: lib/Driver/Driver.cpp:1009
@@ +1008,3 @@
+
+    // We currently don't allow mixing -x and /TC or /TP.
+    assert(!Args.hasArg(options::OPT_x) && "-x and /TC or /TP is not allowed");
----------------
I'd mention that no driver mode exposes both -x and /TC or /TP.


http://llvm-reviews.chandlerc.com/D1290