[PATCH] D30239: enable -flto=thin, -flto-jobs=, and -fthinlto-index= in clang-cl

[Mehdi AMINI via Phabricator via cfe-commits]

mehdi_amini added a comment.

In https://reviews.llvm.org/D30239#683116, @pcc wrote:

> Can you please add a ThinLTO test to lld before adding driver support?


Is clang-cl using lld as default? How is the switch done? Ideally we should have a nice error message from the driver if -flto is used without lld.


https://reviews.llvm.org/D30239