[llvm-dev] Handling of shuffle instructions reverted.

[Jonas Paulsson via llvm-dev]

Hi

Regarding: https://reviews.llvm.org/rL180834

I tried my old patch for InstCombiner for shuffles, which was a handling 
for https://bugs.llvm.org//show_bug.cgi?id=30630. When I applied it a 
month ago, it produced nearly no change. But now I do see some files 
that needs this optimization, and I suspect it has to do with this revert.

I wonder what the status is on getting this reverted patch recommitted? 
Should I post my patch for InstCombiner on Phabricator?

/Jonas

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