[LLVMdev] DFAPacketizer: Determining an instruction's functional unit after packetization.

Tom Stellard thomas.stellard at amd.com
Fri Mar 30 14:15:43 PDT 2012


Hi,

I'm wondering how the Hexagon backend maps instructions to functional
units after instructions have been grouped into packets.  The order of
instructions inside a packet appears to be random and the functional
unit information has been lost.  How does the code emitter know which
functional unit an instruction is supposed to be dispatched to?

Thanks,
Tom




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