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...e obvious solution to folding memory loads. It just isn't implemented yet. Well, actually it is, but I haven't finished writing tests for it. =] -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20140920/29e2be8f/attachment.html>

Hi Chandler, I have tested the new shuffle lowering on a AMD Jaguar cpu (which is AVX but not AVX2). On this particular target, there is a delay when output data from an execution unit is used as input to another execution unit of a different cluster. For example, There are 6 executions units which are divided into 3 execution clusters of Float(FPM,FPA), Vector Integer (MMXA,MMXB,IMM), and Store