[PATCH] Break dependencies in large loops containing reductions (LoopVectorize)

[Nadav Rotem]

Olivier, I don’t really understand this heuristics. It looks like you are adding lots of code to handle a very specific case and I am not convinced that this heuristics is useful for the general case.

Following Hal’s suggestion to benchmark this patch is a really good idea.  Do you know how it affects the LLVM test suite?  Are you seeing any gains or regressions?


http://reviews.llvm.org/D7514

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