Q. What is the main purpose of the data-flow analysis process in a decompiler?

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Q. How does the decompiler improve the readability of the code?

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Q. What is the critical step in the decompilation process related to register usage?

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Q. What is the SSA notation and how does it simplify the decompilation process?

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Q. How can you identify registers that are used as variables?

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Q. What is a register variable?

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Q. What is the problem with identifying whether a register originated in a variable in the program source code or whether it was just allocated by the compiler for intermediate storage?

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Q. What is data-flow analysis useful for?

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Q. Where can type information be gathered from?

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Q. What is the benefit of propagating type information from external calls to known system functions?

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Q. How can type information be propagated throughout the program?

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Q. Why is the process of propagating type information most effective when performed globally?

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Q. What is type propagation?

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Q. What is the purpose of gathering data type information from library calls and system calls?

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Q. What is the main challenge when extracting type information from native IA-32 executables?

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Q. What is the main challenge faced by decompilers when it comes to primitive data types?

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Q. What are the instructions used for up-converting a value from 8 or 16 bits to 32 bits or from 8 bits to 16 bits?

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Q. How can decompilers detect whether a certain variable contains a signed or unsigned value?

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Q. What instruction is used when comparing signed values?

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Q. Which instruction is used to up-convert unsigned values?

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