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What is difference between Single pass compiler and double pass compiler?
Wiki User
∙ 13y ago
i think a pass is reading the input file, i.e. the file in which the code is written in the source language.so in a single pass compiler, the input file is read only once and in doublepass compiler this is done 2 times
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Wiki User
∙ 13y ago
Wiki User
∙ 11y agoA single pass compiler uses forward declarations to determine how to link and compile code; since there is only one pass, a function or variable cannot be used or referenced before it is declared. C is a language that uses a single-pass compiler. A two pass compiler first parses the entire file as the first pass, then compiles the parsed data in the second pass. Languages that use a two-pass compilation method do not require forward declaration, and can optimize the compiled code by performing analysis on the parsed code before compiling (such as dead code removal, inline function optimization, register vs memory variables, etc).
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