[llvm] r288897 - [AVR] Allow loading from stack slots where src and dest registers are identical

[Anton Korobeynikov via llvm-commits]

> +  // In this case, just use a temporary register.
> +  if (DstReg == SrcReg) {
> +    TmpLoReg = SCRATCH_REGISTER;
> +    TmpHiReg = SCRATCH_REGISTER;
This smells like a hack. Can't you use register scavenger to get free
register here?

-- 
With best regards, Anton Korobeynikov
Department of Statistical Modelling, Saint Petersburg State University