Simon Pilgrim 0fe91ad463 [InstCombine] foldSelectFunnelShift - block poison in funnel shift value ...

As raised by @nlopes on D90382 - if this is not a rotate then the select was blocking poison from the 'shift-by-zero' non-TVal, but a funnel shift won't - so freeze it.

2020-11-08 12:58:30 +00:00

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