Problem #4 (ILP) (a) What is an instruction level parallelism (ILP) and what are the primary methods to increase the potential amount of ILP? (b) Explain the differences between superscalar and VLIW processors in terms of hardware and software requirements. Moreover, describes both the strengths and weaknesses each of them. (c) What is speculation and its advantages and disadvantages? Provide some example of the use of speculation. What kind of software or hardware support is needed to implement speculation in processors