Question

Load-use hazards occur when (specific examples) ____

A) The program counter is corrupted
B) There are conflicts in the instruction cache
C) An instruction depends on a previous instruction's result
D) There is a power outage

Answer 1

Load-use hazards occur when an instruction depends on a previous instruction's result.

Step-by-step explanation:

Load-use hazards occur when an instruction depends on a previous instruction's result. This can lead to incorrect results or program crashes if the dependent instruction is executed before the previous instruction has completed. For example, consider the following code:

add r1, r2, r3 ; r1 = r2 + r3
sub r4, r1, r5 ; r4 = r1 - r5

In this code, the second instruction depends on the result of the first instruction. If the first instruction has not completed when the second instruction is executed, the result of the second instruction may be incorrect.