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Commit 89372524 authored by Simon Pilgrim's avatar Simon Pilgrim
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[DAG] computeKnownBits - add basic shift-by-parts handling 

Concat KnownBits from ISD::SHL_PARTS / ISD::SRA_PARTS / ISD::SRL_PARTS lo/hi operands and perform the KnownBits calculation by the shift amount on the extended type, before splitting the KnownBits based on the requested lo/hi result.
parent 380a1b20
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