TonBERRY/micropython
3
0
Fork 0
Code Pull Requests Activity

py/obj: Add MICROPY_OBJ_IMMEDIATE_OBJS option to reduce code size.

Browse Source 
This option (enabled by default for object representation A, B, C) makes
None/False/True objects immediate objects, ie they are no longer a concrete
object in ROM but are rather just values, eg None=0x6 for representation A.

Doing this saves a considerable amount of code size, due to these objects
being widely used:

   bare-arm:  -392 -0.591%
minimal x86:  -252 -0.170% [incl +52(data)]
   unix x64:  -624 -0.125% [incl -128(data)]
unix nanbox:    +0 +0.000%
      stm32: -1940 -0.510% PYBV10
     cc3200: -1216 -0.659%
    esp8266:  -404 -0.062% GENERIC
      esp32:  -732 -0.064% GENERIC[incl +48(data)]
        nrf:  -988 -0.675% pca10040
       samd:  -564 -0.556% ADAFRUIT_ITSYBITSY_M4_EXPRESS

Thanks go to @Jongy aka Yonatan Goldschmidt for the idea.
This commit is contained in:
Damien George
2020-01-09 00:00:27 +11:00
parent 6f0c83f6e1
commit d96cfd13e3
5 changed files with 59 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
py/objnone.c
View File

@@ -28,9 +28,11 @@
#include "py/obj.h"
#if !MICROPY_OBJ_IMMEDIATE_OBJS
typedef struct _mp_obj_none_t {
mp_obj_base_t base;
} mp_obj_none_t;
#endif
STATIC void none_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
(void)self_in;
@@ -48,4 +50,6 @@ const mp_obj_type_t mp_type_NoneType = {
.unary_op = mp_generic_unary_op,
};
#if !MICROPY_OBJ_IMMEDIATE_OBJS
const mp_obj_none_t mp_const_none_obj = {{&mp_type_NoneType}};
#endif