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Consider the following statements about the use of backpatching in a compiler for intermediate code generation:
(I) Backpatching can be used to generate code for Boolean expression in one pass.
(II) Backpatching can be used to generate code for flow-of-control statements in one pass.
Which ONE of the following options is CORRECT?
- Only (I) is correct.
- Only (II) is correct.
- Both (I) and (II) are correct.
- Neither (I) nor (II) is correct.
Correct answer: Both (I) and (II) are correct.
Solution
Backpatching allows a compiler to handle jumps and branches in control flow and Boolean expressions efficiently by postponing the actual address resolution until all necessary information is available, enabling code generation in a single pass for both types of statements.
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