Question: Say we had the following code sequence: or $rl, $r2, $r3 or $r2, $r1, $r4 or $r1, $r1, $r2 a) Assuming the register file has

Say we had the following code sequence: or $rl, $r2, $r3

Say we had the following code sequence: or $rl, $r2, $r3 or $r2, $r1, $r4 or $r1, $r1, $r2 a) Assuming the register file has bypass capability (meaning a value can be read in the ID stage when a previous instruction is writing that value in the WB stage), but there is no forwarding support, and no support for stalling. How many nop's would need to be inserted in this code to get it to execute correctly? b) What if there were only partial forwarding support, specifically only from the output of the ALU back to the input of the ALU? Would this code still need any nop's for proper execution? If so, where and why

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Databases Questions!

Add NOP instructions to this code to eliminate hazards if there is ALU-ALU forwarding only (no forwarding from the MEM to the EX stage). In this exercise, we examine how data dependences affect...

Consider the following MIPS code in 5-stage pipeline: or r1, r2, r3 or r2, r1, r4 or r1, r1, r2 How many nops need to be insert if there is no forwarding in this pipelined processor? How many if...

I need help in this program. I don't understand how I should start working on this. 2 Machine details and background concepts This section explains many background concepts, while the following one...

Use the following code fragment: Loop: LW R1,0(R2) ADDI R1,R1,1 SW R1, 0 (R2) ADDI R2,R2,4 SUB R4, R3,R2 BNEZ R4, Loop load R1 from address 0+R2 ;R1-R1+1 i store R1 at address 0+R2 ;R2-R2+4 :R4-R3-R2...

+ Expert Q&A D + 2. Assume a 5 stage pipeline - fetch, decode, execute, memory access and writeback. Let us say that you have no bypass logic to forward results to the ALU. Show cycle by cycle...

When counting the number of cycles for a loop, find out when (in which cycle) the first instruction in the loop is fetched and when it is fetched again (assuming the loop repeats), and then calculate...

pls answer two questions it's urgent. one question has no forward and other has forward support thanks 2. Assume a 5 stage pipeline - fetch, decode, execute, memory access and writeback. Let us say...

19 1. 2. 3. 4. X: 5. R1 + (R2) BNE Rl, 0, X Rl R2 + Rl R3 R2 + R1 [R2 + 4) = R3 Consider following code sequence with R1 = 2; R2 = 3; R3 = 2; Memory Address 3 has value = 4; Branch Prediction is...

A processor executes an instruction in the following seven stages. The time required by each stage in picoseconds ( 1 , 0 0 0 ps = 1 ns ) is given for each stage. IF Instruction fetch 1 9 0 ps ID...

Suppose Alice wants to send some sensitive information (credit card numbers, SSNs, corporate secrets, health records, invasion orders to start a land war in Asia ) to Bob. To prevent eavesdroppers...

Suppose an 8-bit data word stored in memory is 11000010. Using the Hamming algorithm, determine what check bits would be stored in memory with the data word. Show how you got your answer.

Radio announcers who still play vinyl records have to be careful when cuing up live recordings. While studio albums have blank spaces between the songs, live albums have audiences cheering. If the...

5. (True/False): The CALL instruction pushes the offset of the CALL instruction on the stack.

Seved Help 14 Wisconsin Snowmobile Corp. is considering a switch to level production Cost efficiencies would occur under level production, and aftertax costs would decline by $31,500, but inventory...

2. Employees and managers participate in development of the system.

6. Employees need access to career information sources (including advisors and positions available).

3. Employees are encouraged to take active roles in career management.