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Q 4 ) Consider the following sequence of instructions, and assume that it is executed on a 5 - stage pip data path ( IF

Q4) Consider the following sequence of instructions, and assume that it is executed on a 5-stage pip
data path (IF,DR,ALU,DM, WB. Also assume that writing into a register happens in the first half of the
clock cycle while reading from a register happens in the second half of the clock cycle. Also, assume tha
the hardware will apply "predicted- taken" predictor (i.e. always predict taken) to fetch the instructio
after the branch and flush it later in case of misprediction. Also, assume branch takes two cycles as w
did in class.
(a) List the read-after-write data dependencies. As an example, x on y($t5) shows instruction x has d
dependency on instruction y since it is reading register $t5.
(b) Assume the 5-stage MIPS pipeline with no forwarding, what is the total number of stall cycles? W
is the execution time (in cycles) for the whole program? Show your work.
(c) Assume the 5-stage MIPS pipeline with full forwarding, what is the total number of stall cycles?
is the execution time (in cycles) for the whole program? Show your work.
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