[llvm] X86: make VBMI2 funnel shifts use VSHLD/VSHRD for const splats (PR #169401)

[Simon Pilgrim via llvm-commits]

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+//===- FunnelShiftCombineTest.cpp - X86 Funnel Shift Combine Tests --------===//
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RKSimon wrote:

FunnelShiftCombineTest.cpp ?

https://github.com/llvm/llvm-project/pull/169401