search for: hasextradefregallocreq

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2017 Oct 26
3
RFC: Adding bit to register MachineOperands to allow post-RA register renaming
Forgive me if these questions are naive or if I'm misunderstanding something. I'm certainly very interested in seeing the MachineCopyPropagation patch finally land and stick. 1. Wouldn't function live-ins and reserved registers have started life as physical registers already? For example, wouldn't a live-in be a copy from a physical register to a virtual one allowing the flag to