[Solved] Consider the following Thumb-2 code snippet:IT NE MOVNE R0, #1 MOVNE R1, #2 MOVNE R2, #3 MOVNE R3, #4How many instructions will execute if the condition NE (not equal) is false? | ARM Architecture

ARM Architecture - Control Flow Instructions

Consider the following Thumb-2 code snippet:

IT NE
MOVNE R0, #1
MOVNE R1, #2
MOVNE R2, #3
MOVNE R3, #4

How many instructions will execute if the condition NE (not equal) is false?

AOnly the last MOV instruction executes

BAll 4 MOV instructions execute

COnly the first MOV instruction executes

DNone of the MOV instructions execute

Step-by-Step Solution

Solution:

Step 1: Understand IT NE block behavior
The IT NE block applies the NE condition to up to 4 following instructions.
Step 2: Evaluate condition false case
If NE is false, none of the MOVNE instructions execute because they depend on NE condition.
Final Answer:
None of the MOV instructions execute -> Option D
Quick Check:
Condition false means no instructions run [OK]

Quick Trick: If condition false, IT block instructions skip execution [OK]

Common Mistakes:

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