Summary: This patch transforms the Scheduler class into the ExecuteStage. Most of the logic remains.
Reviewers: andreadb, RKSimon, courbet
Reviewed By: andreadb
Subscribers: mgorny, javed.absar, tschuett, gbedwell, llvm-commits
Differential Revision: https://reviews.llvm.org/D47246
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@334679 91177308-0d34-0410-b5e6-96231b3b80d8
