commit a558e8d6fe4fb7b5d75cf15cdd08181bb4e9ac07
author Florian Hahn <flo@fhahn.com> Fri Apr 19 12:36:41 2019 +0000
committer Florian Hahn <flo@fhahn.com> Fri Apr 19 12:36:41 2019 +0000
tree d31502f9c569a65c67596744926ff2eab947075d
parent 333e5a248f5a13195028fe7adb59870f6601fec8

[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/cfe/trunk@358753 91177308-0d34-0410-b5e6-96231b3b80d8