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Summary: This patch fixes step D4 of Knuth's division algorithm implementation. Negative sign of the step result was not always detected due to incorrect "borrow" handling. Test Plan: Unit test that reveals the bug included. Reviewers: chandlerc, yaron.keren Reviewed By: yaron.keren Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D9196 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235699 91177308-0d34-0410-b5e6-96231b3b80d8
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