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e2d9012a38
Summary: This patch reimplements heuristic that tries to estimate optimization beneftis from complete loop unrolling. In this patch I kept the minimal changes - e.g. I removed code handling branches and folding compares. That's a promising area, but now there are too many questions to discuss before we can enable it. Test Plan: Tests are included in the patch. Reviewers: hfinkel, chandlerc Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D8816 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237156 91177308-0d34-0410-b5e6-96231b3b80d8