Lerking/micropython
1
0
Fork 0
mirror of https://github.com/micropython/micropython.git synced 2025-08-22 18:40:35 +02:00
Code Issues Actions 25 Packages Projects Releases Wiki Activity

py: Remove mp_load_const_bytes and instead load precreated bytes object.

Browse Source 
Previous to this patch each time a bytes object was referenced a new
instance (with the same data) was created.  With this patch a single
bytes object is created in the compiler and is loaded directly at execute
time as a true constant (similar to loading bignum and float objects).
This saves on allocating RAM and means that bytes objects can now be
used when the memory manager is locked (eg in interrupts).

The MP_BC_LOAD_CONST_BYTES bytecode was removed as part of this.

Generated bytecode is slightly larger due to storing a pointer to the
bytes object instead of the qstr identifier.

Code size is reduced by about 60 bytes on Thumb2 architectures.
This commit is contained in:
Damien George
2015-06-25 14:42:13 +00:00
parent ed570e4b2a
commit 59fba2d6ea
14 changed files with 111 additions and 141 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
py/bc0.h
View File

@@ -33,7 +33,6 @@
#define MP_BC_LOAD_CONST_NONE (0x11)
#define MP_BC_LOAD_CONST_TRUE (0x12)
#define MP_BC_LOAD_CONST_SMALL_INT (0x14) // signed var-int
#define MP_BC_LOAD_CONST_BYTES (0x15) // qstr
#define MP_BC_LOAD_CONST_STRING (0x16) // qstr
#define MP_BC_LOAD_CONST_OBJ (0x17) // ptr
#define MP_BC_LOAD_NULL (0x18)