On Mon, 31 Jan 2011 13:28:39 +0100 "Jurjen N.E. Bos" <jurjen....@hetnet.nl> wrote: > I just did it: my first python source code hack. > I replaced the NEXTARG and PEEKARG macros in ceval.c using a cast to > short pointer, and lo and behold, a crude measurement indicates one > to two percent speed increase. > That isn't much, but it is virtually for free! > > Here are the macro's I used: > #define NEXTARG() (next_instr +=2, *(short*)&next_instr[-2]) > #define PEEKARG() (*(short*)&next_instr[1])
Some architectures forbid unaligned access, so this can't be used as-is. Regards Antoine. _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
