Am 22.11.2016 um 15:29 schrieb Mattias Gaertner: > You forgot to consider how scanners work, i.e. how they check and > skip spaces. > > Here are some numbers: > > Compiling Lazarus sources 'make clean all' 1249309 lines 3 times > 0m51.682s > 0m51.415s > 0m51.698s > > Lazarus uses indentation of 2, so replacing each double space with one > tab saves 3.7mb. Compiling 3 times: > 0m52.003s > 0m51.294s > 0m51.452s > > This is a desktop system, so there is always a bit of noise. As you can > see, the time difference is not measurable. > > To estimate the potential speed up: > Replacing all multi spaces with one space saves 6.1mb. Compiling 3 > times: > 0m51.064s > 0m50.733s > 0m51.120s > > It seems scanning the spaces costs about 1%.
In case somebody is interested, the main loop for reading spaces is in compiler/scanner.pas, procedure tscannerfile.skipspace; _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
