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My response to this patch is below, but adding a floating-point feature to SCEV should really be hashed out on the llvm-dev list first. I would like to get the attention of floating-point experts on the design review. I’d like to see a small design proposal justifying the feature and defending it’s soundness. My concern is that the approach may not be sound, but providing this core API would

For reference, the case with a variable loop count is filed as PR27894: https://llvm.org/bugs/show_bug.cgi?id=27894 And the case with a constant loop count is filed as PR27899: https://llvm.org/bugs/show_bug.cgi?id=27899 On Thu, Jun 2, 2016 at 7:48 AM, Demikhovsky, Elena via llvm-dev < llvm-dev at lists.llvm.org> wrote: > I implemented IV simplification with FP SCEV and uploaded a new