Question: Hello, I'm trying to figure out this problem where I have some code given and need to figure out the scheduled instructions for the given
Hello, I'm trying to figure out this problem where I have some code given and need to figure out the scheduled instructions for the given MIPS code. Any help will be greatly appreciated. Thank you for your time.
2-issue processors. You are given the following code for a loop:
-
Loop: lw r1, 0(r6)
lw r2, 4(r6)
sub r3, r1, r2
sw r3, 0(r7)
addi r6, r6, 8
addi r7, r7, 8
addi r4, r4, 2
bne r4, r0, loop
- If the loop exits after executing only two iterations. Show the scheduled instructions for the given MIPS code on a 2-issue processor shown in Figure 4.69. Assume the processor has perfect branch prediction.
| loop | ALU/branch | Load/store | cycle |
| 1st iteration |
|
| 1 |
|
|
|
| 2 |
|
|
|
| 3 |
- Rearrange the code to achieve better performance on a 2-issue statically scheduled processor from Figure 4.69. Write the sequence below.
- Repeat step a for the code from b.
| loop | ALU/branch | Load/store | cycle |
| 1st iteration |
|
| 1 |
|
|
|
| 2 |
|
|
|
| 3 |
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