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...he [integration of Polly in to LLVM](http://lists.llvm.org/pipermail/llvm-dev/2017-September/117379.html). ## LLVM commits * Support for parameterized register classes has landed. Making use of this feature removed 10k lines from the Hexagon backend. [r313271](http://reviews.llvm.org/rL313271), [r313362](http://reviews.llvm.org/rL313362). * GetElementPtr merging is now undone around indirect branches in some cases. This is another optimisation benchmarked using the Python interpreter loop, this time offering a 5% performance improvement. [r312930](http://reviews.llvm.org/rL312930). * MC-layer su...