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93 Commits

Author SHA1 Message Date
Irit Katriel e97910cdb7
gh-125522 : add explicit exception types to bare excepts in tests (#125523) 2024-10-15 17:00:04 +01:00
Victor Stinner f916b77fea
gh-120417: Remove unused imports in tests (part 3) (#120631) 2024-06-17 21:04:58 +02:00
Tian Gao b034f14a4b
gh-74929: Implement PEP 667 (GH-115153) 2024-05-04 12:12:10 +01:00
Irit Katriel c179c0e6cb
gh-117680: make _PyInstructionSequence a PyObject and use it in tests (#117629) 2024-04-17 16:42:04 +01:00
Irit Katriel f42e112fd8
gh-115420: Fix translation of exception hander targets by _testinternalcapi.optimize_cfg. (#115425) 2024-02-15 14:32:52 +00:00
Irit Katriel 0315941441
gh-114265: remove i_loc_propagated, jump threading does not consider line numbers anymore (#114535) 2024-01-25 12:54:19 +00:00
Irit Katriel d36a365118
gh-107901: synthetic jumps which are not at end of loop no longer check the eval breaker (#113721) 2024-01-06 14:20:08 +00:00
Serhiy Storchaka f3ba0a74cd
gh-108416: Mark slow test methods with @requires_resource('cpu') (GH-108421) 
Only mark tests which spend significant system or user time,
by itself or in subprocesses.
 2023-09-02 07:45:34 +03:00
Irit Katriel b0202a4e5d
gh-106149: Simplify stack depth calculation. Replace asserts by exceptions. (#107255) 2023-07-26 13:32:47 +01:00
Dong-hee Na aa5b762bd3
gh-104635: Eliminate redundant STORE_FAST instructions in the compiler (gh-105320) 2023-06-08 08:39:56 +09:00
Mark Shannon 0689340366
GH-105229: Replace some superinstructions with single instruction equivalent. (GH-105230) 2023-06-05 11:07:04 +01:00
Carl Meyer 0589c6a4d3
gh-104615: don't make unsafe swaps in apply_static_swaps (#104620) 2023-05-18 21:22:03 +00:00
Rodolfo M. Pereira 8291ae31dd
GH-103805: Lib test f541 linting issue fix (#103812) 
This PR makes some minor linting adjustments to the Lib/test module
caught by [ruff](https://github.com/charliermarsh/ruff). The adjustments
are all related to the `F541 f-string without any placeholders` issue.

Issue: https://github.com/python/cpython/issues/103805

<!-- gh-issue-number: gh-103805 -->
* Issue: gh-103805
<!-- /gh-issue-number -->

---------

Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
Co-authored-by: Gregory P. Smith <greg@krypto.org>
 2023-04-24 23:24:49 +00:00
Irit Katriel 3468c768ce
gh-102859: Remove JUMP_IF_FALSE_OR_POP and JUMP_IF_TRUE_OR_POP (#102870) 2023-03-22 18:10:48 +00:00
Irit Katriel 634cb61909
gh-87092: refactor assemble() to a number of separate functions, which do not need the compiler struct (#102562) 2023-03-13 15:59:20 +00:00
Irit Katriel 9f799ab020
gh-87092: Make jump target label equal to the offset of the target in the instructions sequence (#102093) 2023-02-28 11:29:32 +00:00
penguin_wwy 753fc8a5d6
gh-101632: Add the new RETURN_CONST opcode (#101633) 2023-02-07 22:32:21 +00:00
Irit Katriel a3ac9232f8
gh-87092: expose the compiler's codegen to python for unit tests (GH-99111) 2022-11-14 13:56:40 +00:00
Brandt Bucher c7065ce019
GH-93143: Don't turn LOAD_FAST into LOAD_FAST_CHECK (GH-99075) 2022-11-08 07:50:46 -08:00
Dennis Sweeney 39bc70e267
gh-97912: Avoid quadratic behavior when adding LOAD_FAST_CHECK (GH-97952) 
* The compiler analyzes the usage of the first 64 local variables all at once using bit masks.

* Local variables beyond the first 64 are only partially analyzed, achieving linear time.
 2022-10-20 18:27:41 -04:00
Irit Katriel 6d7a0e0dd7
gh-87092: reduce redundancy and repetition in compiler's optimization stage (GH-96713) 2022-09-13 13:03:41 +01:00
Irit Katriel 4c72517cad
gh-93554: Conditional jump opcodes only jump forward (GH-96318) 2022-09-01 21:36:47 +01:00
Irit Katriel 894cafd9a5
gh-93678: apply remove_redundant_jumps in optimize_cfg (GH-96274) 2022-09-01 11:03:52 +01:00
Irit Katriel 420f39f457
gh-93678: add _testinternalcapi.optimize_cfg() and test utils for compiler optimization unit tests (GH-96007) 2022-08-24 11:02:53 +01:00
Irit Katriel bde06e1b83
gh-92228: disable the compiler's 'small exit block inlining' optimization for blocks that have a line number (GH-94592) 
Inlining of code that corresponds to source code lines, can make it hard to distinguish later between code which is only reachable from except handlers, and that which is reachable in normal control flow. This caused problems with the debugger's jump feature.

This PR turns off the inlining optimisation for code which has line numbers. We still inline things like the implicit "return None".
 2022-07-06 23:38:36 -07:00
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
Dennis Sweeney ddc4a782d3
gh-93223: More aggressive Jump-To-Jump elimination (GH-93229) 2022-05-27 11:17:59 +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 a00518d9ad
bpo-47120: Replace the JUMP_ABSOLUTE opcode by the relative JUMP_BACKWARD (GH-32115) 2022-03-31 14:14:15 +01:00
Brandt Bucher 78ae4cc6dc
bpo-46528: Attempt SWAPs at compile-time (GH-30970) 2022-02-09 15:15:36 -08:00
Brandt Bucher a0e55a571c
bpo-46528: Simplify BUILD_TUPLE/UNPACK_SEQUENCE folding (GH-31039) 2022-02-01 13:41:32 -08:00
Brandt Bucher 8548366864
bpo-46528: Simplify the VM's stack manipulations (GH-30902) 2022-01-26 12:47:45 -08:00
Brandt Bucher 27b69e60da
bpo-45773: Stop "optimizing" certain jump patterns (GH-29505) 2021-11-11 11:44:34 -08:00
Brandt Bucher 9178f533ff
bpo-45636: Merge all numeric operators (GH-29482) 2021-11-10 22:56:22 -08:00
Irit Katriel f8d624d6a5
bpo-45144: use subTests in test_peepholer (GH-28247) 2021-09-10 18:29:21 +02:00
Serhiy Storchaka 8b01067318
bpo-28307: Tests and fixes for optimization of C-style formatting (GH-26318) 
Fix errors:
* "%10.s" should be equal to "%10.0s", not "%10s".
* Tuples with starred expressions caused a SyntaxError.
 2021-05-23 19:06:48 +03:00
Mark Shannon 8473cf89bd
bpo-42246: Remove DO_NOT_EMIT_BYTECODE macros, so that while loops and if statements conform to PEP 626. (GH-23743) 2020-12-15 11:07:50 +00:00
Mark Shannon b52432cb8c
bpo-42057: Add regression test to master. (GH-22893) 2020-10-23 00:42:26 +09:00
Mark Shannon 6e8128f02e
bpo-41323: Perform 'peephole' optimizations directly on the CFG. (GH-21517) 
* Move 'peephole' optimizations into compile.c and perform them directly on the CFG.
 2020-07-30 10:03:00 +01:00
Serhiy Storchaka 8c579b1cc8
bpo-32856: Optimize the assignment idiom in comprehensions. (GH-16814) 
Now `for y in [expr]` in comprehensions is as fast as a simple
assignment `y = expr`.
 2020-02-12 12:18:59 +02:00
Mark Shannon 9af0e47b17
bpo-39156: Break up COMPARE_OP into four logically distinct opcodes. (GH-17754) 
Break up COMPARE_OP into four logically distinct opcodes:
* COMPARE_OP for rich comparisons
* IS_OP for 'is' and 'is not' tests
* CONTAINS_OP for 'in' and 'is not' tests
* JUMP_IF_NOT_EXC_MATCH for checking exceptions in 'try-except' statements.
 2020-01-14 10:12:45 +00:00
T. Wouters c8165036f3 bpo-38115: Deal with invalid bytecode offsets in lnotab (GH-16079) 
Document that lnotab can contain invalid bytecode offsets (because of
terrible reasons that are difficult to fix). Make dis.findlinestarts()
ignore invalid offsets in lnotab. All other uses of lnotab in CPython
(various reimplementations of addr2line or line2addr in Python, C and gdb)
already ignore this, because they take an address to look for, instead.

Add tests for the result of dis.findlinestarts() on wacky constructs in
test_peepholer.py, because it's the easiest place to add them.
 2019-09-28 07:49:15 -07:00
Joannah Nanjekye 92777d5e5a bpo-18578: Rename and document test.bytecode_helper as test.support.bytecode_helper (GH-15168) 
Rename and document test.bytecode_helper as test.support.bytecode_helper
 2019-09-12 10:02:59 +01:00
Victor Stinner 8f4ef3b019
Remove unused imports in tests (GH-14518) 2019-07-01 18:28:25 +02:00
Pablo Galindo 1e61504b8b
bpo-37289: Add a test for if with ifexpr in the peephole optimiser to detect regressions (GH-14127) 2019-06-20 22:17:03 +01:00
Pablo Galindo 05f8318655
bpo-37269: Correctly optimise conditionals with constant booleans (GH-14071) 
Fix a regression introduced by af8646c805 that was causing code of the form:

if True and False:
   do_something()

to be optimized incorrectly, eliminating the block.
 2019-06-14 06:54:53 +01:00
Pablo Galindo 3498c642f4
bpo-37213: Handle negative line deltas correctly in the peephole optimizer (GH-13969) 
The peephole optimizer was not optimizing correctly bytecode after negative deltas were introduced. This is due to the fact that some special values (255) were being searched for in both instruction pointer delta and line number deltas.
 2019-06-13 19:16:22 +01:00
Serhiy Storchaka 3f7e9aa2ef
bpo-32925: Optimized iterating and containing test for literal lists (GH-5842) 
consisting of non-constants: `x in [a, b]` and `for x in [a, b]`.
The case of all constant elements already was optimized.
 2018-03-11 10:54:47 +02:00
Serhiy Storchaka 520b7ae27e
bpo-17611. Move unwinding of stack for "pseudo exceptions" from interpreter to compiler. (GH-5006) 
Co-authored-by: Mark Shannon <mark@hotpy.org>
Co-authored-by: Antoine Pitrou <antoine@python.org>
 2018-02-22 23:33:30 +02:00
Serhiy Storchaka 2e3f570185
bpo-30416: Protect the optimizer during constant folding. (#4860) 
It no longer spends much time doing complex calculations and no
longer consumes much memory for creating large constants that will
be dropped later.

This fixes also bpo-21074.
 2017-12-15 14:11:43 +02:00