Commit Graph

26 Commits

Author SHA1 Message Date
Victor Stinner fcb750af86
gh-131152: Remove unused imports from `Tools/cases_generator` (#131156) 2025-03-13 10:59:51 +01:00
Mark Shannon 54965f3fb2
GH-130296: Avoid stack transients in four instructions. (GH-130310)
* Combine _GUARD_GLOBALS_VERSION_PUSH_KEYS and _LOAD_GLOBAL_MODULE_FROM_KEYS into _LOAD_GLOBAL_MODULE

* Combine _GUARD_BUILTINS_VERSION_PUSH_KEYS and _LOAD_GLOBAL_BUILTINS_FROM_KEYS into _LOAD_GLOBAL_BUILTINS

* Combine _CHECK_ATTR_MODULE_PUSH_KEYS and _LOAD_ATTR_MODULE_FROM_KEYS into _LOAD_ATTR_MODULE

* Remove stack transient in LOAD_ATTR_WITH_HINT
2025-02-28 18:00:38 +00:00
Mark Shannon 2effea4dab
GH-128682: Spill the stack pointer in labels, as well as instructions (GH-129618) 2025-02-04 12:18:31 +00:00
Mark Shannon 808071b994
GH-128682: Make `PyStackRef_CLOSE` escaping. (GH-129404) 2025-02-03 12:41:32 +00:00
Sam Gross a10f99375e
Revert "GH-128914: Remove conditional stack effects from `bytecodes.c` and the code generators (GH-128918)" (GH-129202)
The commit introduced a ~2.5-3% regression in the free threading build.

This reverts commit ab61d3f430.
2025-01-23 09:26:25 +00:00
Mark Shannon ab61d3f430
GH-128914: Remove conditional stack effects from `bytecodes.c` and the code generators (GH-128918) 2025-01-20 17:09:23 +00:00
Ken Jin 6293d00e72
gh-120619: Strength reduce function guards, support 2-operand uop forms (GH-124846)
Co-authored-by: Brandt Bucher <brandtbucher@gmail.com>
2024-11-09 11:35:33 +08:00
Mark Shannon 25441592db
GH-125515: Reduce number of compiler warnings in generated code (GH-125697) 2024-10-28 10:30:31 +00:00
Mark Shannon da071fa3e8
GH-119866: Spill the stack around escaping calls. (GH-124392)
* Spill the evaluation around escaping calls in the generated interpreter and JIT. 

* The code generator tracks live, cached values so they can be saved to memory when needed.

* Spills the stack pointer around escaping calls, so that the exact stack is visible to the cycle GC.
2024-10-07 14:56:39 +01:00
Mark Shannon eec7bdaf01
GH-120024: Remove `CHECK_EVAL_BREAKER` macro. (GH-122968)
* Factor some instructions into micro-ops to isolate CHECK_EVAL_BREAKER for escape analysis

* Eliminate CHECK_EVAL_BREAKER macro
2024-08-14 12:04:05 +01:00
Mark Shannon 81c739e2dc
GH-120024: Tidy up case generator code a bit. (GH-122780) 2024-08-08 10:57:59 +01:00
Sam Gross 3e753c689a
gh-118926: Spill deferred references to stack in cases generator (#122748)
This automatically spills the results from `_PyStackRef_FromPyObjectNew`
to the in-memory stack so that the deferred references are visible to
the GC before we make any possibly escaping call.

Co-authored-by: Ken Jin <kenjin@python.org>
2024-08-07 13:23:53 -04:00
Mark Shannon fbfab4f88c
GH-120024: Refactor code generators to uses classes for emitting code. (GH-122730) 2024-08-06 13:04:33 +01:00
Mark Shannon a9d56e38a0
GH-122155: Track local variables between pops and pushes in cases generator (GH-122286) 2024-08-01 09:27:26 +01:00
Mark Shannon 3eacfc1a4d
GH-121784: Generate an error during code gen if a variable is marked `unused`, but is used and thus cached in a prior uop. (#121788)
* Reject uop definitions that declare values as 'unused' that are already cached by prior uops

* Track which variables are defined and only load from memory when needed

* Support explicit `flush` in macro definitions. 

* Make sure stack is flushed in where needed.
2024-07-18 12:49:24 +01:00
Mark Shannon bf8686e1ea
GH-118926: Better distinguish between pointer and arrays in interpreter generator (GH-121496) 2024-07-09 11:33:56 +01:00
Ken Jin 22b0de2755
gh-117139: Convert the evaluation stack to stack refs (#118450)
This PR sets up tagged pointers for CPython.

The general idea is to create a separate struct _PyStackRef for everything on the evaluation stack to store the bits. This forces the C compiler to warn us if we try to cast things or pull things out of the struct directly.

Only for free threading: We tag the low bit if something is deferred - that means we skip incref and decref operations on it. This behavior may change in the future if Mark's plans to defer all objects in the interpreter loop pans out.

This implies a strict stack reference discipline is required. ALL incref and decref operations on stackrefs must use the stackref variants. It is unsafe to untag something then do normal incref/decref ops on it.

The new incref and decref variants are called dup and close. They mimic a "handle" API operating on these stackrefs.

Please read Include/internal/pycore_stackref.h for more information!

---------

Co-authored-by: Mark Shannon <9448417+markshannon@users.noreply.github.com>
2024-06-27 03:10:43 +08:00
Victor Stinner 35b16795d1
gh-120417: Remove unused imports in cases_generator (#120622) 2024-06-17 21:58:56 +02:00
Michael Droettboom 0edde64a41
GH-117457: Correct pystats uop "miss" counts (GH-117477) 2024-04-04 15:49:18 -07:00
Mark Shannon bf82f77957
GH-116422: Tier2 hot/cold splitting (GH-116813)
Splits the "cold" path, deopts and exits, from the "hot" path, reducing the size of most jitted instructions, at the cost of slower exits.
2024-03-26 09:35:11 +00:00
Kirill Podoprigora e4561e0501
gh-115778: Add `tierN` annotation for instruction definitions (#115815)
This replaces the old `TIER_{ONE,TWO}_ONLY` macros. Note that `specialized` implies `tier1`.

Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
2024-02-23 17:31:57 +00:00
Mark Shannon 626c414995
GH-115457: Support splitting and replication of micro ops. (GH-115558) 2024-02-20 10:50:59 +00:00
Mark Shannon 7b21403ccd
GH-112354: Initial implementation of warm up on exits and trace-stitching (GH-114142) 2024-02-20 09:39:55 +00:00
Mark Shannon e96f26083b
GH-111485: Generate instruction and uop metadata (GH-113287) 2023-12-20 14:27:25 +00:00
Mark Shannon 9263173280
Fix whitespace in generated code 2023-12-13 12:31:41 +00:00
Mark Shannon 0c55f27060
GH-111485: Factor out tier 2 code generation from the rest of the interpreter code generator (GH-112968) 2023-12-12 12:12:17 +00:00