COMPUTER SCIENCE AND ENGINEERING
COMPILER DESIGN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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they enhance the portability of the compiler to other target processors
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program analysis is more accurate on intermediate code than on machine code
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the information from dataflow analysis cannot otherwise be used for optimization
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the information from the front end cannot otherwise be used for optimization
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Detailed explanation-1: -Some code optimizations are carried out on the intermediate code because program analysis is more accurate on intermediate code than on machine code.
Detailed explanation-2: -Code optimization is a program modification strategy that endeavours to enhance the intermediate code, so a program utilises the least potential memory, minimises its CPU time and offers high speed.
Detailed explanation-3: -But the main purpose of doing some code-optimization on intermediate code generation is to enhance the portability of the compiler to target processors.
Detailed explanation-4: -The code optimization in the synthesis phase is a program transformation technique, which tries to improve the intermediate code by making it consume fewer resources (i.e. CPU, Memory) so that faster-running machine code will result.