Q$4$: Assume that $x11$ is initialized to $11$ and $x12$ is initialized to $22.$ Suppose you executed the code below on a version of the pipeline that does not handle data hazards $($i$.$e$.,$ the programmer is responsible for addressing data hazards by inserting NOP instructions where necessary$).$ What would the final values of register $x15$ be$?$ Assume the register file is written at the beginning of the cycle and read at the end of a cycle. Therefore, an ID stage will return the results of a WB state occurring during the same cycle See following Figure for details.

addi $11,12,5$

add $13,11,12$

addi $14,11,15$

add $15,11,11$

wion of regisler $x^2$

I

Q$5.$ Add NOP instructions to the code below so that it will run correctly on a pipeline that does not handle data hazards. addi $x11,x12,5$

add $x13,x11,x12$

addi $14,11,15$

add $15,x13,x12$