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<title>suspect-devices/circuitpython/py/emitnative.c, branch v1.5.2</title>
<subtitle>CircuitPython - a Python implementation for teaching coding with microcontrollers</subtitle>
<id>https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=v1.5.2</id>
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<updated>2015-12-10T22:19:48+00:00</updated>
<entry>
<title>py: Make UNARY_OP_NOT a first-class op, to agree with Py not semantics.</title>
<updated>2015-12-10T22:19:48+00:00</updated>
<author>
<name>Damien George</name>
<email>damien.p.george@gmail.com</email>
</author>
<published>2015-12-08T12:28:11+00:00</published>
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<id>urn:sha1:bdbe8c9ae21559f6dc0b8e1ad84b7bbec2a04726</id>
<content type='text'>
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.
</content>
</entry>
<entry>
<title>py/emit: Change type of arg of load_const_obj from void* to mp_obj_t.</title>
<updated>2015-11-29T14:25:04+00:00</updated>
<author>
<name>Damien George</name>
<email>damien.p.george@gmail.com</email>
</author>
<published>2015-11-27T12:41:25+00:00</published>
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<id>urn:sha1:5d66b427e22b6db5c73b74a6e9ba057ac5a38893</id>
<content type='text'>
</content>
</entry>
<entry>
<title>py: Add MICROPY_PERSISTENT_CODE so code can persist beyond the runtime.</title>
<updated>2015-11-13T12:49:18+00:00</updated>
<author>
<name>Damien George</name>
<email>damien.p.george@gmail.com</email>
</author>
<published>2015-11-02T17:27:18+00:00</published>
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<id>urn:sha1:c8e9c0d89afa90694790fd48e1bf527487a5beb7</id>
<content type='text'>
Main changes when MICROPY_PERSISTENT_CODE is enabled are:

- qstrs are encoded as 2-byte fixed width in the bytecode
- all pointers are removed from bytecode and put in const_table (this
  includes const objects and raw code pointers)

Ultimately this option will enable persistence for not just bytecode but
also native code.
</content>
</entry>
<entry>
<title>py: Add constant table to bytecode.</title>
<updated>2015-11-13T12:49:18+00:00</updated>
<author>
<name>Damien George</name>
<email>damien.p.george@gmail.com</email>
</author>
<published>2015-10-23T00:23:11+00:00</published>
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<id>urn:sha1:713ea1800d1f0c82a0c75885ad034705556ab5ef</id>
<content type='text'>
Contains just argument names at the moment but makes it easy to add
arbitrary constants.
</content>
</entry>
<entry>
<title>py: Put all bytecode state (arg count, etc) in bytecode.</title>
<updated>2015-11-13T12:49:18+00:00</updated>
<author>
<name>Damien George</name>
<email>damien.p.george@gmail.com</email>
</author>
<published>2015-10-22T22:45:37+00:00</published>
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<id>urn:sha1:3a3db4dcf0400cffef860f61a84979cb1f7a7541</id>
<content type='text'>
</content>
</entry>
<entry>
<title>py: Reorganise bytecode layout so it's more structured, easier to edit.</title>
<updated>2015-11-13T12:49:18+00:00</updated>
<author>
<name>Damien George</name>
<email>damien.p.george@gmail.com</email>
</author>
<published>2015-03-18T17:47:47+00:00</published>
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<id>urn:sha1:9b7f583b0ca37ee87e5fb82e2d65fcd96a609b2f</id>
<content type='text'>
</content>
</entry>
<entry>
<title>py: Fix build of ARM native emitter due to recent viper changes.</title>
<updated>2015-10-14T11:40:54+00:00</updated>
<author>
<name>Damien George</name>
<email>damien.p.george@gmail.com</email>
</author>
<published>2015-10-14T11:40:54+00:00</published>
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<id>urn:sha1:fcce1483fa8287f954e2f331b7899904b3f2130b</id>
<content type='text'>
Addresses #1510.
</content>
</entry>
<entry>
<title>py: Implement ptr32 load and store in viper emitter.</title>
<updated>2015-10-12T23:50:17+00:00</updated>
<author>
<name>Damien George</name>
<email>damien.p.george@gmail.com</email>
</author>
<published>2015-10-12T23:50:17+00:00</published>
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<id>urn:sha1:b8f9ac54111ad0962401c764112c9a5669699deb</id>
<content type='text'>
</content>
</entry>
<entry>
<title>py/emitnative: Raise ViperTypeError for unsupported unary ops.</title>
<updated>2015-10-08T12:08:59+00:00</updated>
<author>
<name>Damien George</name>
<email>damien.p.george@gmail.com</email>
</author>
<published>2015-10-08T12:08:59+00:00</published>
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<id>urn:sha1:9f5f156b9d911b6c6282eb4cf0e4f8a9129169c5</id>
<content type='text'>
</content>
</entry>
<entry>
<title>py: Slightly simplify compile and emit of star/double-star arguments.</title>
<updated>2015-09-23T10:47:01+00:00</updated>
<author>
<name>Damien George</name>
<email>damien.p.george@gmail.com</email>
</author>
<published>2015-09-23T10:47:01+00:00</published>
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<id>urn:sha1:fbcaf0ea18d647adc445dc1029392c2a908cf540</id>
<content type='text'>
Saves a few bytes of code space and eliminates need for rot_two
bytecode (hence saving RAM and execution time, by a tiny bit).
</content>
</entry>
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