ARM Architecture - Control Flow Instructions
In Thumb-2, how many instructions can be conditionally executed inside a single IT block?
In Thumb-2, how many instructions can be conditionally executed inside a single IT block?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Recall IT block size limit
The IT block can conditionally execute up to four instructions following the IT instruction.Step 2: Eliminate other options
Options with 1, 2, or 8 instructions are incorrect because the architecture limits it to 4.Final Answer:
Up to 4 instructions -> Option BQuick Check:
IT block size = 4 instructions [OK]
Quick Trick: IT block can cover four instructions max [OK]
Common Mistakes:
- Assuming IT block can cover more than 4 instructions
- Thinking IT block only affects one instruction
- Confusing IT block size with loop count
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