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ae98867126
vzext patterns and insert-element patterns that for SSE4 have dedicated instructions. With this we can enable the experimental mode in a regression test that happens to cover some of the past set of issues. You can see that the new logic does significantly better here on the floating point cases. A follow-up to this change and the previous ones will hoist the logic into helpers so it can be shared across element type sizes as in this particular case it generalizes cleanly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217136 91177308-0d34-0410-b5e6-96231b3b80d8