Discussion
Assertion (A): Loop invariant code is hoisted into a preheader block rather than simply placed before the loop.
Reason (R): The preheader gives the loop a single entry point through which the hoisted computation is guaranteed to pass exactly once.
Answer: B
Both are true and the reason gives the mechanism, and it matters when a loop has several entering edges. Creating the preheader makes the transformation valid without having to duplicate the hoisted code on every edge.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development