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* all: Use the name MicroPython consistently in commentsAlexander Steffen2017-07-31
| | | | | There were several different spellings of MicroPython present in comments, when there should be only one.
* py: Add LOAD_SUPER_METHOD bytecode to allow heap-free super meth calls.Damien George2017-04-22
| | | | | | | | | | | | | | | | | | | | | | This patch allows the following code to run without allocating on the heap: super().foo(...) Before this patch such a call would allocate a super object on the heap and then load the foo method and call it right away. The super object is only needed to perform the lookup of the method and not needed after that. This patch makes an optimisation to allocate the super object on the C stack and discard it right after use. Changes in code size due to this patch are: bare-arm: +128 minimal: +232 unix x64: +416 unix nanbox: +364 stmhal: +184 esp8266: +340 cc3200: +128
* py: Allow bytecode/native to put iter_buf on stack for simple for loops.Damien George2017-02-16
| | | | | So that the "for x in it: ..." statement can now work without using the heap (so long as the iterator argument fits in an iter_buf structure).
* py: Combine 3 comprehension opcodes (list/dict/set) into 1.Damien George2016-09-19
| | | | | | | | | With the previous patch combining 3 emit functions into 1, it now makes sense to also combine the corresponding VM opcodes, which is what this patch does. This eliminates 2 opcodes which simplifies the VM and reduces code size, in bytes: bare-arm:44, minimal:64, unix(NDEBUG,x86-64):272, stmhal:92, esp8266:200. Profiling (with a simple script that creates many list/dict/set comprehensions) shows no measurable change in performance.
* py: Declare constant data as properly constant.Damien George2016-05-20
| | | | | Otherwise some compilers (eg without optimisation) will put this read-only data in RAM instead of ROM.
* py: Make UNARY_OP_NOT a first-class op, to agree with Py not semantics.Damien George2015-12-10
| | | | | | | | | | | | | | | Fixes #1684 and makes "not" match Python semantics. The code is also simplified (the separate MP_BC_NOT opcode is removed) and the patch saves 68 bytes for bare-arm/ and 52 bytes for minimal/. Previously "not x" was implemented as !mp_unary_op(x, MP_UNARY_OP_BOOL), so any given object only needs to implement MP_UNARY_OP_BOOL (and the VM had a special opcode to do the ! bit). With this patch "not x" is implemented as mp_unary_op(x, MP_UNARY_OP_NOT), but this operation is caught at the start of mp_unary_op and dispatched as !mp_obj_is_true(x). mp_obj_is_true has special logic to test for truthness, and is the correct way to handle the not operation.
* py: Remove mp_load_const_bytes and instead load precreated bytes object.Damien George2015-06-25
| | | | | | | | | | | | | | | | 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: Add MP_BINARY_OP_DIVMOD to simplify and consolidate divmod builtin.Damien George2015-06-13
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* py: Convert hash API to use MP_UNARY_OP_HASH instead of ad-hoc function.Damien George2015-05-12
| | | | | | | | | | | | | | Hashing is now done using mp_unary_op function with MP_UNARY_OP_HASH as the operator argument. Hashing for int, str and bytes still go via fast-path in mp_unary_op since they are the most common objects which need to be hashed. This lead to quite a bit of code cleanup, and should be more efficient if anything. It saves 176 bytes code space on Thumb2, and 360 bytes on x86. The only loss is that the error message "unhashable type" is now the more generic "unsupported type for __hash__".
* py: Remove LOAD_CONST_ELLIPSIS bytecode, use LOAD_CONST_OBJ instead.Damien George2015-05-05
| | | | | Ellipsis constant is rarely used so no point having an extra bytecode for it.
* py: Parse big-int/float/imag constants directly in parser.Damien George2015-02-08
| | | | | | | | | 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: Add load_const_obj to emitter, add LOAD_CONST_OBJ to bytecode.Damien George2015-01-13
| | | | | This allows to directly load a Python object to the Python stack. See issue #722 for background.
* py: Move to guarded includes, everywhere in py/ core.Damien George2015-01-01
| | | | Addresses issue #1022.
* py: Allow to properly disable builtin slice operation.Damien George2014-12-27
| | | | | | | This patch makes the MICROPY_PY_BUILTINS_SLICE compile-time option fully disable the builtin slice operation (when set to 0). This includes removing the slice sytanx from the grammar. Now, enabling slice costs 4228 bytes on unix x64, and 1816 bytes on stmhal.
* py: Allow to properly disable builtin "set" object.Damien George2014-12-27
| | | | | | | | This patch makes MICROPY_PY_BUILTINS_SET compile-time option fully disable the builtin set object (when set to 0). This includes removing set constructor/comprehension from the grammar, the compiler and the emitters. Now, enabling set costs 8168 bytes on unix x64, and 3576 bytes on stmhal.
* py: Compress load-int, load-fast, store-fast, unop, binop bytecodes.Damien George2014-10-25
| | | | | | | | | | | | | | | | | | | | | | There is a lot potential in compress bytecodes and make more use of the coding space. This patch introduces "multi" bytecodes which have their argument included in the bytecode (by addition). UNARY_OP and BINARY_OP now no longer take a 1 byte argument for the opcode. Rather, the opcode is included in the first byte itself. LOAD_FAST_[0,1,2] and STORE_FAST_[0,1,2] are removed in favour of their multi versions, which can take an argument between 0 and 15 inclusive. The majority of LOAD_FAST/STORE_FAST codes fit in this range and so this saves a byte for each of these. LOAD_CONST_SMALL_INT_MULTI is used to load small ints between -16 and 47 inclusive. Such ints are quite common and now only need 1 byte to store, and now have much faster decoding. In all this patch saves about 2% RAM for typically bytecode (1.8% on 64-bit test, 2.5% on pyboard test). It also reduces the binary size (because bytecodes are simplified) and doesn't harm performance.
* Fix some unused variables, and silence a clang warning about initialization ↵Antonin ENFRUN2014-05-12
| | | | override in vmentrytable.h
* Add license header to (almost) all files.Damien George2014-05-03
| | | | | | | Blanket wide to all .c and .h files. Some files originating from ST are difficult to deal with (license wise) so it was left out of those. Also merged modpyb.h, modos.h, modstm.h and modtime.h in stmhal/.
* py: Remove unnecessary LOAD_CONST_ID bytecode.Damien George2014-04-27
| | | | It's the same as LOAD_CONST_STR.
* py: Wrap #if's around emitter functions that are used only by emitcpy.Damien George2014-04-20
| | | | | | | 3 emitter functions are needed only for emitcpy, and so we can #if them out when compiling with emitcpy support. Also remove unused SETUP_LOOP bytecode.
* py: Merge BINARY_OP_SUBSCR and store_subscr (w/ delete) into subscr.Damien George2014-04-17
| | | | mp_obj_t->subscr now does load/store/delete.
* Rename header file.AZ Huang2014-04-15
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