Simple copy loop
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| # r0=temp | |
| # r1=source ptr (unaligned) | |
| # r2=dest ptr (aligned) | |
| # r3=number of words to copy | |
| lp: lwr r0, 3(r1) # <-- this ends up having a false dependency on r0 from the previous iter | |
| lwl r0, 0(r1) | |
| sw r0, 0(r2) | |
| addiu r1, r1, 4 | |
| addiu r2, r2, 4 | |
| addiu r3, r3, -1 | |
| bgtz r3, lp |
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