i am preparing for intervew and i want the answer how Barrel shifter can be used to optimize of C code at ARM processor.
i have learnt that Barrel shifter is :A digital circuit that can shift a data word by any number of bits in a single cycle. It is implemented as a sequence of multiplexors: the output of one MUX is connected to the input of the next MUX in a way that depends on the shift distance. The number of multiplexors required is log2(n), where n is the computer's register size.