How do I compile to assembly instead of an executable with gcc. I know there is an -S flag, but where do I use it in the makefile. For example, if I use flags -O3 -o exe_name, where should I put the -S flag?
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How do I compile to assembly instead of an executable with gcc. I know there is an -S flag, but where do I use it in the makefile. For example, if I use flags -O3 -o exe_name, where should I put the -S flag?
I suggest also using
-fverbose-asmbecause then the generated assembler has some generated comments which “explains” the code. For example:would generate in
foo.s(with some comments) the assembler code produced by compilingfoo.cAnd to understand what the GCC optimizations are doing one could even try
-fdump-tree-all(but this produces hundreds of files!).