[PATCH] D20993: [lit] Add support for PGO profile and code coverage collection

[David Li via llvm-commits]

davidxl added a subscriber: davidxl.
davidxl added a comment.

How many profile data files are generated in a full run? It may take huge amount of space.

I have not gotten time to submit my patch for the runtime to support online/in-process merge yet, but will try to get it done soon. Once that is ready, we can reduce the overhead greatly.


http://reviews.llvm.org/D20993