On Mi, 2011-02-02 at 17:34 +0000, Philip Herron wrote: > I am not quite sure what you are asking/trying to do What I'm trying to achieve is to compile some piece of code without "any" optimization but keep the variables in registers, i.e. do not spill them on the stack. Optimization level 1 does that, i.e. it keeps variables in registers and only spills them if there are to many, but it also enables a lot of other optimization techniques which I do not want. I don't want to run the application in the end. The binary file will be analyzed afterwards by other applications and the CFG will be reconstructed. Therefore, the binary is not used in real world scenarios, it is more of a "scientific interest". [...] > But have you tried comparing the outputs of what -O0 outputs to say -O2 ? The problem with using anything else then -O0 is that it enables other optimization techniques, e.g. constant propagation (the example of the first mail would be scaled down to a simple "return 0;") which I do not want. Therefore, I would like to compile my code without any optimizations except register allocation. I hope it got more clear. Otherwise just let me know. Any other ideas? Kind regards, Stefan
