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> On Sep 9, 2014, at 1:47 PM, Sean Silva <chisophugis at gmail.com> wrote: > > > > On Tue, Sep 9, 2014 at 12:53 PM, Quentin Colombet <qcolombet at apple.com <mailto:qcolombet at apple.com>> wrote: > Hi Chandler, > > I had observed some improvements and regressions with the new lowering. > > Here are the numbers for an Ivy Bridge machine fixed at

Hi Chandler, Thanks for fixing the problem with the insertps mask. Generally the new shuffle lowering looks promising, however there are some cases where the codegen is now worse causing runtime performance regressions in some of our internal codebase. You have already mentioned how the new shuffle lowering is missing some features; for example, you explicitly said that we currently lack of