[LLVMdev] MachineOperand Fixed Register

dag at cray.com dag at cray.com
Thu May 16 14:23:13 PDT 2013

Is there any way to determine if a Register-type MachineOperand
represents a fixed machine register?  For example, call arguments must
end up in specific machine register but I don't see any way to ascertain
this from the information in MachineOperand.  Basically, I need to know
if I am allowed to rename a MachineOperand or not after register



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