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A retargetable compiler is a compiler that can relatively easily be modified to generate code for different CPU architectures. The object code produced by these is frequently of lesser quality than that produced by a compiler developed specifically for a processor. Retargetable compilers are often also cross compilers.
Typically the design of a compiler divides the functionality so that the code generation is separate from parsing and syntax checking. The design and implementation of a retargetable compiler uses polymorphism in the code generating section so that code can be generated
for any of several different processors.
Examples of retargetable compilers:
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