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How would you combine conditional branches to handle three cases after comparing R9 and R10: branch if less, branch if equal, and branch if greater?

hard📝 Application Q9 of 15
ARM Architecture - Control Flow Instructions
How would you combine conditional branches to handle three cases after comparing R9 and R10: branch if less, branch if equal, and branch if greater?
AUse BLT for less, BEQ for equal, BGT for greater
BUse BNE for less, BGE for equal, BLT for greater
CUse BGT for less, BLE for equal, BEQ for greater
DUse BLE for less, BNE for equal, BGE for greater
Step-by-Step Solution
Solution:

  1. Step 1: Recall ARM branch conditions for comparison

    BLT branches if less than, BEQ if equal, BGT if greater than.

  2. Step 2: Match each condition to the correct branch

    BLT for less, BEQ for equal, BGT for greater is the standard pattern.

  3. Final Answer:

    Use BLT for less, BEQ for equal, BGT for greater -> Option A

  4. Quick Check:

    Less, equal, greater branches = BLT, BEQ, BGT [OK]
Quick Trick: Use BLT, BEQ, BGT for less, equal, greater branches [OK]
Common Mistakes:
  • Mixing BNE with equal condition
  • Using incorrect branch codes for comparisons
  • Confusing BLE and BGE

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