tree 9b7b0fe3413ecc1d9289956677c479f52f160d97
parent 719ff993247a42b171d24a4655546d310285decf
author Florian Hahn <flo@fhahn.com> 1555677401 +0000
committer Florian Hahn <flo@fhahn.com> 1555677401 +0000

[LTO] Add plumbing to save stats during LTO on Darwin.

Gold and ld on Linux already support saving stats, but the
infrastructure is missing on Darwin. Unfortunately it seems like the
configuration from lib/LTO/LTO.cpp is not used.

This patch adds a new LTOStatsFile option and adds plumbing in Clang to
use it on Darwin, similar to the way remarks are handled.

Currnetly the handling of LTO flags seems quite spread out, with a bunch
of duplication. But I am not sure if there is an easy way to improve
that?

Reviewers: anemet, tejohnson, thegameg, steven_wu

Reviewed By: steven_wu

Differential Revision: https://reviews.llvm.org/D60516

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@358753 91177308-0d34-0410-b5e6-96231b3b80d8