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Hi All, I wanted to share a couple of updates on the effort to uncover non-determinism in LLVM through reverse iteration. 1. Reverse iteration has now been enabled for DenseMap (https://reviews.llvm.org/D35043) 2. We have setup a nightly reverse iteration buildbot (http://lab.llvm.org:8011/builders/reverse-iteration). This builds all LLVM targets with reverse iteration ON and runs ninja