How can I compile to assembly with gcc

c linux gcc x86

I suggest also using -fverbose-asm because then the generated assembler has some generated comments which "explains" the code. For example:

gcc -S -fverbose-asm -O2 foo.c

would generate in foo.s (with some comments) the assembler code produced by compiling foo.c

And to understand what the GCC optimizations are doing one could even try -fdump-tree-all (but this produces hundreds of files!).

c linux gcc x86

You can ask GCC to produce the assembly file, instead of an object file (or an executable).

For instance:

gcc -Wall -c test.c

Will produce an object file from test.c (test.o).

gcc -Wall -o test test.c

Will produce an executable file named 'test' from test.c

gcc -Wall -S test.c

Will produce an assembly file from test.c (test.s)

c linux gcc x86

Put it pretty much anywhere.

gcc -O3 -S -o output.asm ...

will store the generated assemby in output.asm.

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