Assume that the following code is executed on a

$5-$stage pipelined datapath:

add $$5,$$$2,$$$1$

lw $$3,4($$$5)$

lw $$2,0($$$2)$

or $$3,$$$5,$$$3$

sw $$3,0($$$5)$ Q$1.$ If there is no forwarding or hazard

detection, insert nops to ensure correct

execution. $($Note that you need to insert the

bubbles using nops.$)$ Q$2.$ Repeat the above question but now use

nops only when a hazard cannot be avoided by changing or rearranging these instructions. You

can assume register $$7$ can be used to hold

temporary values in your modified code. $($Note

that whenever bubbles are required, you need to

insert nops.$)$