What would be usefull is to move the loads of code stored in sysutils/runtime into a dll/so.
thats what makes C code look "smaller", theres a nice libc (and others) there that groups mostly used functions into a single instance, while in pascal every executable replicates the very same code for each instance. make sysutils/runtime etc an external loadable library and we are going to see FPC generate similar sized executables for similarly sized programs. 2012/4/29 Jonas Maebe <jonas.ma...@elis.ugent.be>: > > On 29 Apr 2012, at 12:22, Florian Klämpfl wrote: > >> Spent more man power into optimizer development, though some >> optimizations are hard in pascal because we assume stricter aliasing >> rules and because we don't have a volatile keyword. > > At least as far as our current optimizers are concerned, nothing is volatile > in Pascal: both the assembler and node tree optimizers will replace multiple > loads of global data with a single load when they can. So that should not > limit any optimizations at this time. > > Regarding aliasing, I'm not sure whether C defines anything regarding that. > You at least need to use the -fstrict-aliasing gcc flag to tell it to assume > that pointers to different types cannot alias each other (and hence get > better optimizations). In standard Pascal, pointers by definition can only > point to data of one particular type, so it could be compiled with > -fstrict-aliasing in any case. Since in FPC/Delphi this is no longer the > case, you could introduce a similar switch there to allow programmers to tell > the compiler that their code also obeys strict aliasing rules. > > In general, I think it's indeed simply a matter of the amount of man power > spent on optimizations. > > > Jonas_______________________________________________ > fpc-pascal maillist - fpc-pascal@lists.freepascal.org > http://lists.freepascal.org/mailman/listinfo/fpc-pascal _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
