CircuitPython - a Python implementation for teaching coding with microcontrollers https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=v1.8.7 2016-12-15T02:00:19+00:00 2016-12-15T02:00:19+00:00 Damien George damien.p.george@gmail.com 2016-12-15T02:00:19+00:00 urn:sha1:7f1da0a03b1559080ca4d054bd38f104bde168e6 Defining and initialising mp_kbd_exception is boiler-plate code and so the core runtime can provide it, instead of each port needing to do it themselves. The exception object is placed in the VM state rather than on the heap. 2016-12-14T00:40:11+00:00 Damien George damien.p.george@gmail.com 2016-12-14T00:40:11+00:00 urn:sha1:e8f2db7da3f0e60901b09ee6eada99a9e875497f There's no need to force ports to copy-and-paste this initialisation code. If FSUSERMOUNT is enabled then this zeroing out must be done. 2016-11-14T22:41:22+00:00 Paul Sokolovsky pfalcon@users.sourceforge.net 2016-11-14T22:40:23+00:00 urn:sha1:a0b2c6ad32230d679260eb2a545e5272234254ff 2016-11-14T22:10:34+00:00 Paul Sokolovsky pfalcon@users.sourceforge.net 2016-11-14T22:10:34+00:00 urn:sha1:79d996a57b351e0ef354eb1e2f644b194433cc73 This includes StopIteration and thus are important to make Python-coded iterables work with yield from/await. Exceptions in Python send() are still not handled and left for future consideration and optimization. 2016-10-21T05:26:01+00:00 Damien George damien.p.george@gmail.com 2016-10-18T00:49:27+00:00 urn:sha1:571e6f26dbd7e0e38441bc402f76d293303063b2 Builtin functions with a fixed number of arguments (0, 1, 2 or 3) are quite common. Before this patch the wrapper for such a function cost 3 machine words. After this patch it only takes 2, which can reduce the code size by quite a bit (and pays off even more, the more functions are added). It also makes function dispatch slightly more efficient in CPU usage, and furthermore reduces stack usage for these cases. On x86 and Thumb archs the dispatch functions are now tail-call optimised by the compiler. The bare-arm port has its code size increase by 76 bytes, but stmhal drops by 904 bytes. Stack usage by these builtin functions is decreased by 48 bytes on Thumb2 archs. 2016-10-17T01:17:37+00:00 Damien George damien.p.george@gmail.com 2016-10-17T01:17:37+00:00 urn:sha1:7d0d7215d2575a2d36d34c9a13b58cade0610a28 Saves the following number of bytes of code space: 176 for bare-arm, 352 for minimal, 272 for unix x86-64, 140 for stmhal, 120 for esp8266. 2016-10-07T02:31:59+00:00 Damien George damien.p.george@gmail.com 2016-10-07T02:31:59+00:00 urn:sha1:3a0a7717304cc34a4d6ef55f767666c918c185b5 This is an often used code pattern, and its use reduces code size of the core by about 100 bytes. 2016-09-21T14:23:16+00:00 Damien George damien.p.george@gmail.com 2016-09-21T00:52:53+00:00 urn:sha1:93c4a6a3f70e389b466fbc7a4f1ad2e1df87c93f One can instead lookup __name__ in the modules dict to get the value. 2016-09-02T04:49:50+00:00 Damien George damien.p.george@gmail.com 2016-09-02T04:42:53+00:00 urn:sha1:5f3bda422a18d49fb282a93968b658c568343b7d 2016-08-12T18:28:45+00:00 Paul Sokolovsky pfalcon@users.sourceforge.net 2016-08-12T18:26:12+00:00 urn:sha1:9e1b61dedd82dffccbe4f20996eadaf79726d427 Introduce mp_raise_msg(), mp_raise_ValueError(), mp_raise_TypeError() instead of previous pattern nlr_raise(mp_obj_new_exception_msg(...)). Save few bytes on each call, which are many.