8000 gh-95913: Edit, expand & format Bytecode sect in 3.11 WhatsNew by CAM-Gerlach · Pull Request #98559 · python/cpython · GitHub
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gh-95913: Edit, expand & format Bytecode sect in 3.11 WhatsNew #98559

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Merged
merged 13 commits into from
Oct 24, 2022
Merged

gh-95913: Edit, expand & format Bytecode sect in 3.11 WhatsNew #98559

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48a18d5
Fix Sphinx syntax in bytecode section and tweak phrasing
CAM-Gerlach Oct 20, 2022
4a3d830
Use clear, consistant phrasing on all Bytecode entries
CAM-Gerlach Oct 20, 2022
611a628
Re-order opcode changes to Added, Replaced, Removed, Changed
CAM-Gerlach Oct 20, 2022
68bef2a
Add missing added and removed opcodes to section
CAM-Gerlach Oct 21, 2022
f34698c
Add table with all added/replace/removed opcodes
CAM-Gerlach Oct 22, 2022
650b4e4
Merge opcode information from list into tables
CAM-Gerlach Oct 22, 2022
87e06bb
Add exception reprisentation change to Changed Opcodes
CAM-Gerlach Oct 23, 2022
9c165b8
Unify & simplify added and replaced tables & entries
CAM-Gerlach Oct 23, 2022
1e0d7cb
Move added opcodes out of table into a bulleted list instead
CAM-Gerlach Oct 23, 2022
a0b90d8
Re-order Replaced Opcodes table by replaced opcode
CAM-Gerlach Oct 23, 2022
4ed6cfb
Consolidate changed and removed sections to be more concise
CAM-Gerlach Oct 23, 2022
7c94ab0
Consolidate jump opcode changes further
CAM-Gerlach Oct 23, 2022
c1a7743
CHECK_EG_MATCH is new
iritkatriel Oct 24, 2022
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Consolidate jump opcode changes further
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@CAM-Gerlach
CAM-Gerlach committed Oct 23, 2022
commit 7c94ab031c4210fe2df80e9db9e626ad7fbc0aca
16 changes: 9 additions & 7 deletions Doc/whatsnew/3.11.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -1468,16 +1468,21 @@ Replaced opcodes
| | :opcode:`!JUMP_IF_NOT_EXC_MATCH` | | :opcode:`CHECK_EXC_MATCH` | Now performs check but doesn't jump |
| | :opcode:`!JUMP_IF_NOT_EG_MATCH` | | :opcode:`CHECK_EG_MATCH` | |
+------------------------------------+-----------------------------------+-----------------------------------------+
| | :opcode:`!JUMP_ABSOLUTE` | | :opcode:`JUMP_BACKWARD` | All jump opcodes now relative; |
| | :opcode:`!POP_JUMP_IF_FALSE` | | :opcode:`POP_JUMP_BACKWARD_IF_* | arg is offset from current instruction |
| | :opcode:`!POP_JUMP_IF_TRUE` | <POP_JUMP_BACKWARD_IF_TRUE>` | rather than absolute location; |
| | | :opcode:`POP_JUMP_FORWARD_IF_* | added ``NONE`` & ``NOT_NONE`` variants |
| | :opcode:`!JUMP_ABSOLUTE` | | :opcode:`JUMP_BACKWARD` | See [#bytecode-jump]_; |
| | :opcode:`!POP_JUMP_IF_FALSE` | | :opcode:`POP_JUMP_BACKWARD_IF_* | ``TRUE``, ``FALSE``, |
| | :opcode:`!POP_JUMP_IF_TRUE` | <POP_JUMP_BACKWARD_IF_TRUE>` | ``NONE`` and ``NOT_NONE`` variants |
| | | :opcode:`POP_JUMP_FORWARD_IF_* | for each direction |
| | <POP_JUMP_FORWARD_IF_TRUE>` | |
+------------------------------------+-----------------------------------+-----------------------------------------+
| | :opcode:`!SETUP_WITH` | :opcode:`BEFORE_WITH` | :keyword:`with` block setup |
| | :opcode:`!SETUP_ASYNC_WITH` | | |
+------------------------------------+-----------------------------------+-----------------------------------------+

.. [#bytecode-jump] All jump opcodes are now relative, including the
existing :opcode:`JUMP_IF_TRUE_OR_POP` and :opcode:`JUMP_IF_FALSE_OR_POP`.
The argument is now an offset from the current instruction
rather than an absolute location.


.. _whatsnew311-changed-opcodes:
.. _whatsnew311-removed-opcodes:
Expand All @@ -1486,9 +1491,6 @@ Replaced opcodes
Changed/removed opcodes
-----------------------

* Changed :opcode:`JUMP_IF_TRUE_OR_POP` and :opcode:`JUMP_IF_FALSE_OR_POP`
to be relative rather than absolute.

* Changed :opcode:`MATCH_CLASS` and :opcode:`MATCH_KEYS`
to no longer push an additional boolean value to indicate success/failure.
Instead, ``None`` is pushed on failure
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