suspect-devices/circuitpython/py/emit.h, branch v1.4.5CircuitPython - a Python implementation for teaching coding with microcontrollershttps://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=v1.4.52015-06-25T14:42:13+00:00py: Remove mp_load_const_bytes and instead load precreated bytes object.2015-06-25T14:42:13+00:00Damien Georgedamien.p.george@gmail.com2015-06-25T14:42:13+00:00urn:sha1:59fba2d6ea31c134c9c0b88dc73cd25b236f167c
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.
py: Make viper codegen raise proper exception (ViperTypeError) on error.2015-04-20T13:29:31+00:00Damien Georgedamien.p.george@gmail.com2015-04-20T13:29:31+00:00urn:sha1:c8b60f013b9d624a74ad502460f2bc7d00c39644
This fixes a long standing problem that viper code generation gave
terrible error messages, and actually no errors on pyboard where
assertions are disabled.
Now all compile-time errors are raised as proper Python exceptions, and
are of type ViperTypeError.
Addresses issue #940.
py, compiler: When just bytecode, make explicit calls instead of table.2015-03-26T16:52:45+00:00Damien Georgedamien.p.george@gmail.com2015-03-26T16:44:14+00:00urn:sha1:4112590a602fa11b4d9a3df3ed5c55df56c0dc62
When just the bytecode emitter is needed there is no need to have a
dynamic method table for the emitter back-end, and we can instead
directly call the mp_emit_bc_XXX functions. This gives a significant
reduction in code size and a very slight performance boost for the
compiler.
This patch saves 1160 bytes code on Thumb2 and 972 bytes on x86, when
native emitters are disabled.
Overall savings in code over the last 3 commits are:
bare-arm: 1664 bytes.
minimal: 2136 bytes.
stmhal: 584 bytes (it has native emitter enabled).
cc3200: 1736 bytes.
py, compiler: Remove emit_pass1 code, using emit_bc to do its job.2015-03-26T16:52:45+00:00Damien Georgedamien.p.george@gmail.com2015-03-26T15:49:53+00:00urn:sha1:a210c774f9cfbcde284f5b8a63442b4d6da1ae5b
First pass for the compiler is computing the scope (eg if an identifier
is local or not) and originally had an entire table of methods dedicated
to this, most of which did nothing. With changes from previous commit,
this set of methods can be removed and the methods from the bytecode
emitter used instead, with very little modification -- this is what is
done in this commit.
This factoring has little to no impact on the speed of the compiler
(tested by compiling 3763 Python scripts and timing it).
This factoring reduces code size by about 270-300 bytes on Thumb2 archs,
and 400 bytes on x86.
py, compiler: Refactor load/store/delete_id logic to reduce code size.2015-03-26T16:52:45+00:00Damien Georgedamien.p.george@gmail.com2015-03-26T14:42:40+00:00urn:sha1:542bd6b4a1ead90fde42f24d01c82580f9d048de
Saves around 230 bytes on Thumb2 and 750 bytes on x86.
py: Give error for duplicate label in inline assembler.2015-03-03T17:08:02+00:00Damien Georgedamien.p.george@gmail.com2015-03-03T17:08:02+00:00urn:sha1:9c5cabb502b59e5cc4354c8ca66be3d4a3e03bf9py: Combine emit functions for jump true/false to reduce code size.2015-02-28T15:04:06+00:00Damien Georgedamien.p.george@gmail.com2015-02-28T15:04:06+00:00urn:sha1:63f3832e813442dcfc88be65d78ce465b053a33b
Saves 116 bytes for stmhal and 56 bytes for cc3200 port.
py: Make inline assembler raise proper SyntaxError exception on error.2015-02-13T01:00:51+00:00Damien Georgedamien.p.george@gmail.com2015-02-13T01:00:51+00:00urn:sha1:8dfbd2d5894c98bd7b48e3e69bec0216d06ebb47
Also gives line number of location of error. Very useful!
py: Parse big-int/float/imag constants directly in parser.2015-02-08T01:57:40+00:00Damien Georgedamien.p.george@gmail.com2015-02-08T01:57:40+00:00urn:sha1:7d414a1b52d193bab2c94cf56932e1eba23ba542
Previous to this patch, a big-int, float or imag constant was interned
(made into a qstr) and then parsed at runtime to create an object each
time it was needed. This is wasteful in RAM and not efficient. Now,
these constants are parsed straight away in the parser and turned into
objects. This allows constants with large numbers of digits (so
addresses issue #1103) and takes us a step closer to #722.
py: Change vstr so that it doesn't null terminate buffer by default.2015-01-28T23:43:01+00:00Damien Georgedamien.p.george@gmail.com2015-01-28T23:43:01+00:00urn:sha1:0d3cb6726ddc1bab9fdd11a0aaa259fb436da4b2
This cleans up vstr so that it's a pure "variable buffer", and the user
can decide whether they need to add a terminating null byte. In most
places where vstr is used, the vstr did not need to be null terminated
and so this patch saves code size, a tiny bit of RAM, and makes vstr
usage more efficient. When null termination is needed it must be
done explicitly using vstr_null_terminate.