c++ - How does the compiler know about the instruction set of my CPU? -


i've read that

the compiler converts code written in human-readable programming language machine code representation understood processor.

how compiler know instruction set of cpu?

any reference understand job of assembler, linker , loader helpful.

how compiler know instruction set of cpu?

most compilers know how emit code specific cpu (or small number of them). each target cpu requires write compiler back-end it, , task non-trivial.

gcc supports large variety of targets, gcc built emit code few targets. in other words, can build gcc emit code x86_64 , i*86 processors, , can build copy emit code powerpc, can't build single gcc produce code three.

any reference understand job of assembler, linker , loader

google search above terms led me here.


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