Update loop unroller cost model to make sure debug info does not affect optimization decisions.

Summary: Debug info should *not* affect optimization decisions. This patch updates loop unroller cost model to make it not affected by debug info.

Reviewers: davidxl, mzolotukhin

Subscribers: haicheng, llvm-commits, mzolotukhin

Differential Revision: https://reviews.llvm.org/D25098

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282894 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed