Applying optimization recursively by compiling again using optimization flags

$u$hil_k$ · 11-18-2013, 11:51 AM

Hello guys, i wanted to know is there any possibilities of compiling the already compiled file from GCC in order to apply optimization on it. In other words suppose i compile a C file using GCC by applying certain optimization flags to generate a binary file and later can i compile it again using certain optimization flags again to generate even more optimized code and so on recursively???

rtmistler · 11-18-2013, 12:19 PM

No possibility at all because once compiled, it does not need to be compiled again it is assembly code. Any further optimizations would have to be done in assembly code. What's the point of the question here? There are different things one optimizes for and depending on the processor architecture, you can benefit by instructions available. The best optimization is done by writing directly in assembly, providing the author does write correct, efficient code.