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184 Commits

Author SHA1 Message Date
Brandt Bucher 6162a0e305
Fix incorrect versions in magic number comments (GH-101301) 2023-01-25 13:30:33 -08:00
Mark Shannon f02fa64bf2
GH-100762: Don't call `gen.throw()` in `gen.close()`, unless necessary. (GH-101013) 
* Store exception stack depth in YIELD_VALUE's oparg and use it avoid expensive gen.throw() in gen.close() where possible.
 2023-01-24 17:25:37 +00:00
Mark Shannon 7b14c2ef19
GH-100982: Add `COMPARE_AND_BRANCH` instruction (GH-100983) 2023-01-16 12:35:21 +00:00
Mark Shannon 6e4e14d98f
GH-100923: Embed jump mask in `COMPARE_OP` oparg (GH-100924) 2023-01-11 20:40:43 +00:00
Mark Shannon 78068126a1
GH-99005: More intrinsics (GH-100774) 
* Remove UNARY_POSITIVE, LIST_TO_TUPLE and ASYNC_GEN_WRAP, replacing them with intrinsics.
 2023-01-06 14:47:57 +00:00
Mark Shannon 28187141cc
GH-99005: Add `CALL_INTRINSIC_1` instruction (GH-100771) 
* Remove PRINT_EXPR instruction

* Remove STOPITERATION_ERROR instruction

* Remove IMPORT_STAR instruction
 2023-01-05 16:05:51 +00:00
Nikita Sobolev c69cfcdb11
closes gh-99508: fix `TypeError` in `Lib/importlib/_bootstrap_external.py` (GH-99635) 2022-11-23 16:47:31 -06:00
Irit Katriel 3dd6ee2c00
gh-99254: remove all unused consts from code objects (GH-99255) 2022-11-11 10:53:43 +00:00
Mark Shannon f4adb97506
GH-96793: Implement PEP 479 in bytecode. (GH-99006) 
* Handle converting StopIteration to RuntimeError in bytecode.

* Add custom instruction for converting StopIteration into RuntimeError.
 2022-11-03 11:38:51 +00:00
Mark Shannon 22863df7ca
GH-96793: Change `FOR_ITER` to not pop the iterator on exhaustion. (GH-96801) 
Change FOR_ITER to have the same stack effect regardless of whether it branches or not.
Performance is unchanged as FOR_ITER (and specialized forms jump over the cleanup code).
 2022-10-27 11:55:03 +01:00
Barry Warsaw 13d4489142
gh-86298: Ensure that __loader__ and __spec__.loader agree in warnings.warn_explicit() (GH-97803) 
In `_warnings.c`, in the C equivalent of `warnings.warn_explicit()`, if the module globals are given (and not None), the warning will attempt to get the source line for the issued warning.  To do this, it needs the module's loader.

Previously, it would only look up `__loader__` in the module globals.  In https://github.com/python/cpython/issues/86298 we want to defer to the `__spec__.loader` if available.

The first step on this journey is to check that `loader == __spec__.loader` and issue another warning if it is not.  This commit does that.

Since this is a PoC, only manual testing for now.

```python
# /tmp/foo.py
import warnings

import bar

warnings.warn_explicit(
    'warning!',
    RuntimeWarning,
    'bar.py', 2,
    module='bar knee',
    module_globals=bar.__dict__,
    )
```

```python
# /tmp/bar.py
import sys
import os
import pathlib

# __loader__ = pathlib.Path()
```

Then running this: `./python.exe -Wdefault /tmp/foo.py`

Produces:

```
bar.py:2: RuntimeWarning: warning!
  import os
```

Uncomment the `__loader__ = ` line in `bar.py` and try it again:

```
sys:1: ImportWarning: Module bar; __loader__ != __spec__.loader (<_frozen_importlib_external.SourceFileLoader object at 0x109f7dfa0> != PosixPath('.'))
bar.py:2: RuntimeWarning: warning!
  import os
```

Automerge-Triggered-By: GH:warsaw
 2022-10-06 19:32:53 -07:00
Gregory P. Smith 27369ef56f
gh-82874: Convert remaining importlib format uses to f-str. (#98005) 
f-yes
 2022-10-06 18:27:51 -07:00
Brett Cannon e1c4d56fdd
gh-65961: Do not rely solely on `__cached__` (GH-97990) 
Make sure `__spec__.cached` (at minimum) can be used.
 2022-10-06 15:40:22 -07:00
Irit Katriel 4c72517cad
gh-93554: Conditional jump opcodes only jump forward (GH-96318) 2022-09-01 21:36:47 +01:00
Brandt Bucher 5bfb3c372b
GH-90997: Wrap yield from/await in a virtual try/except StopIteration (GH-96010) 2022-08-19 12:33:44 -07:00
Barry Warsaw e1182bc377
gh-94619: Remove long deprecated methods module_repr() and load_module() (#94624) 
* gh-94619: Remove long deprecated methods module_repr() and load_module()

Closes #94619

* Update Misc/NEWS.d/next/Library/2022-07-06-14-57-33.gh-issue-94619.PRqKVX.rst

Fix typo

Co-authored-by: Brett Cannon <brett@python.org>

Co-authored-by: Brett Cannon <brett@python.org>
 2022-08-04 17:24:26 -07:00
Thomas Grainger 6da988a46c
gh-91181: drop support for bytes on sys.path (GH-31934) 
Support for bytes broke sometime between Python 3.2 and 3.6 and has been broken ever since. Trying to bring back supports is surprisingly difficult in the face of -b and checking for keys in sys.path_importer_cache. Since the support was broken for so long, trying to overcome the difficulty of bringing back the support has been deemed not worth it.

Co-authored-by: Eryk Sun <eryksun@gmail.com>
Co-authored-by: Brett Cannon <brett@python.org>
 2022-07-16 18:07:53 -07:00
Irit Katriel 324d01944d
gh-94485: Set line number of module's RESUME instruction to 0, as specified by PEP 626 (GH-94552) 
Co-authored-by: Mark Shannon <mark@hotpy.org>
 2022-07-05 14:38:44 +02:00
Mark Shannon c0453a40fa
GH-94163: Add BINARY_SLICE and STORE_SLICE instructions. (GH-94168) 2022-06-27 12:24:23 +01:00
Dennis Sweeney 5fcfdd87c9
GH-91432: Specialize FOR_ITER (GH-91713) 
* Adds FOR_ITER_LIST and FOR_ITER_RANGE specializations.

* Adds _PyLong_AssignValue() internal function to avoid temporary boxing of ints.
 2022-06-21 11:19:26 +01:00
Ken Jin b083450f88
GH-93429: Merge `LOAD_METHOD` back into `LOAD_ATTR` (GH-93430) 2022-06-14 11:36:22 +01:00
Christian Heimes 09243b898a
gh-93461: Invalidate sys.path_importer_cache entries with relative paths (GH-93653) 2022-06-10 23:56:26 +02:00
Mark Shannon f012df706c
Shrink the LOAD_METHOD cache by one codeunit. (#93537) 2022-06-07 10:28:53 +01:00
Dennis Sweeney f425f3bb27
gh-93143: Avoid NULL check in LOAD_FAST based on analysis in the compiler (GH-93144) 2022-05-31 16:32:30 -04:00
Mark Shannon 3fd8610002
GH-89914: Make the oparg of the YIELD_VALUE instruction equal the stack depth. (GH-92960) 2022-05-19 17:49:29 +01:00
Mark Shannon e48ac9c100
GH-90690: Remove `PRECALL` instruction (GH-92925) 2022-05-19 11:05:26 +01:00
Dennis Sweeney 37c6db60f9
gh-91869: Fix tracing of specialized instructions with extended args (GH-91945) 2022-04-27 22:36:34 -06:00
Mark Shannon 944fffee89
GH-88116: Use a compact format to represent end line and column offsets. (GH-91666) 
* Stores all location info in linetable to conform to PEP 626.

* Remove column table from code objects.

* Remove end-line table from code objects.

* Document new location table format
 2022-04-21 16:10:37 +01:00
Irit Katriel ea2ae02607
gh-91276: Make JUMP_IF_TRUE_OR_POP/JUMP_IF_FALSE_OR_POP relative (GH-32215) 2022-04-15 20:19:24 +01:00
Irit Katriel dd207a6ac5
bpo-47120: make POP_JUMP_IF_TRUE/FALSE/NONE/NOT_NONE relative (GH-32400) 2022-04-11 10:40:24 +01:00
Irit Katriel 0aa8d5cbd8
bpo-47120: make JUMP_NO_INTERRUPT relative (GH-32221) 2022-04-05 12:49:08 +01:00
Irit Katriel 32091df41c
bpo-47186: Replace JUMP_IF_NOT_EG_MATCH by CHECK_EG_MATCH + jump (GH-32309) 2022-04-05 12:06:22 +01:00
Irit Katriel 04e07c258f
bpo-47186: Replace JUMP_IF_NOT_EXC_MATCH by CHECK_EXC_MATCH + jump (GH-32231) 2022-04-01 13:59:38 +01:00
Irit Katriel a00518d9ad
bpo-47120: Replace the JUMP_ABSOLUTE opcode by the relative JUMP_BACKWARD (GH-32115) 2022-03-31 14:14:15 +01:00
Mark Shannon 3011a097bd
Use low bit of LOAD_GLOBAL's oparg to indicate whether it should push an additional NULL. (GH-31933) 2022-03-17 16:14:57 +00:00
Brandt Bucher 5498a61c7c
bpo-46841: Don't use an oparg counter for `STORE_SUBSCR` (GH-31742) 2022-03-08 15:53:22 +00:00
Brandt Bucher f193631387
bpo-46841: Use inline caching for calls (GH-31709) 2022-03-07 11:45:00 -08:00
Serhiy Storchaka 6927632492
Remove trailing spaces (GH-31695) 2022-03-05 17:47:00 +02:00
Brandt Bucher 586b24d3be
bpo-46841: Fix error message hacks in `GET_AWAITABLE` (GH-31664) 2022-03-04 12:41:17 +00:00
Brandt Bucher 05a8bc1c94
bpo-46841: Use inline caching for attribute accesses (GH-31640) 2022-03-03 15:31:00 -08:00
Mark Shannon 3b0f1c5a71
bpo-46841: Use inline cache for `BINARY_SUBSCR`. (GH-31618) 2022-03-01 16:00:34 +00:00
Brandt Bucher 7820a5897e
bpo-46841: Use inline caching for `COMPARE_OP` (GH-31622) 2022-03-01 13:53:13 +00:00
Mark Shannon 4558af5a8f
bpo-46841: Move the cache for `LOAD_GLOBAL` inline. (GH-31575) 2022-02-28 12:56:29 +00:00
Brandt Bucher 424ecab494
bpo-46841: Use inline caching for `UNPACK_SEQUENCE` (GH-31591) 2022-02-28 11:54:14 +00:00
Brandt Bucher 0f41aac109
bpo-46841: Use *inline* caching for `BINARY_OP` (GH-31543) 2022-02-25 12:11:34 +00:00
Mark Shannon 59585d6b2e
bpo-46329: Streamline calling sequence a bit. (GH-31465) 
* Move handling of bound-methods to PRECALL.

* Remove call_shape.postcall_shrink

* Remove call_shape.callable

* Remove call_shape.callable. Change CALL oparg to match PRECALL oparg.

* Move KW_NAMES before PRECALL.

* Update opcode docs in dis.rst
 2022-02-21 18:26:47 +00:00
Mark Shannon cf345e945f
bpo-46329: Change calling sequence (again) (GH-31373) 
* Change calling sequence: Add PUSH_NULL. Merge PRECALL_FUNCTION and PRECALL_METHOD into PRECALL.
 2022-02-18 17:19:08 +00:00
Mark Shannon 89fd7c3452
bpo-46329: Split calls into precall and call instructions. (GH-30855) 
* Add PRECALL_FUNCTION opcode.

* Move 'call shape' varaibles into struct.

* Replace CALL_NO_KW and CALL_KW with KW_NAMES and CALL instructions.

* Specialize for builtin methods taking using the METH_FASTCALL | METH_KEYWORDS protocol.

* Allow kwnames for specialized calls to builtin types.

* Specialize calls to tuple(arg) and str(arg).
 2022-01-28 12:42:30 +00:00
Brandt Bucher 8548366864
bpo-46528: Simplify the VM's stack manipulations (GH-30902) 2022-01-26 12:47:45 -08:00
Mark Shannon 0367a36fdc
bpo-43683: Streamline YIELD_VALUE and SEND (GH-30723) 
* Split YIELD_VALUE into ASYNC_GEN_WRAP; YIELD_VALUE for async generators.

* Split SEND into SEND; YIELD_VALUE.

* Document new opcodes.
 2022-01-24 11:08:53 +00:00