[PATCH] D29701: ThinLTOBitcodeWriter: Write available_externally copies of VCP eligible functions to merged module.

[Mehdi AMINI via Phabricator via llvm-commits]

mehdi_amini added a comment.

In https://reviews.llvm.org/D29701#670366, @pcc wrote:

> Note: I patched in https://github.com/pcc/llvm-project/commit/5a5904d6721f895eafdd2fc476872b98806c36e6 to measure perf impact. Total wall time spent in addRegularLTO when linking chrome was 8.2743s, as compared to about 6 seconds before (see https://reviews.llvm.org/D27324).


So >30% overhead on addRegularLTO, but what is the overhead for `runRegularLTO`?


https://reviews.llvm.org/D29701