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perf: VM and runtime hot paths from pyperformance - #8737

Merged

youknowone merged 57 commits into

RustPython:mainfrom

youknowone:perf-without-decimal

Sep 19, 2026

Merged

perf: VM and runtime hot paths from pyperformance#8737
youknowone merged 57 commits into
RustPython:mainfrom
youknowone:perf-without-decimal

Commits on Sep 19, 2026
- time: use CLOCK_UPTIME_RAW for monotonic/perf_counter on Apple
  
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- vm: derive f_lineno lazily instead of tracking prev_line per instruction
  
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- vm: coalesce per-call thread-locals into one FRAME_SLOT_CACHE
  
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- vm: fold stop/finalizing checks into EVAL_BREAKER
  
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- gc: set the TRACKED bit with a plain store for freshly allocated objects
  
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- vm: skip thread exception publish when pushing/popping a None exc slot
  
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  364bb76
- vm: allocation-free keyword-call fast path and super() MRO walk
  
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  4a14b04
- builtins: cheaper enumerate and zip iteration
  
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  57c75d4
- _asyncio: cache module objects and use native set/dict operations
  
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  f5b2871
- perf: use mimalloc as global allocator for rustpython CLI
  
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  07c31da
- vm: cap dict/set table shrink and compact holes on resize
  
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- _functools: add native _lru_cache_wrapper
  
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- sre_engine: ASCII fast path for \d \s \w unicode category checks
  
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  2a59cad
- vm: skip VM attach for no-op generator/coroutine __del__
  
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  78cca65
- _asyncio: skip full __import__ dispatch on module-cache hot path
  
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  96018cf
- vm: skip VM-attach section in with_vm when already on the current interpreter
  
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  3f06556
- vm: general sys.modules fast path for vm.import
  
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  01619c2
- _asyncio: bypass generic context.run dispatch in task_eager_start
  
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  7573dde
- vm: drop scopeguard::defer! from generator/coroutine resume hot path
  
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  61f3684
- vm: run generator bodies through the call trampoline
  
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  08d938d
- vm: run a `yield from` chain in one eval loop
  
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  580eab9
- vm: reset the oparg prefix when a signal unwinds a frame
  
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  b3e46c1
- bytecode: fetch a code unit with one 16-bit acquire load
  
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  c41d05a
- vm: compute the cache-entry count after dispatch, not before
  
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  4a008a2
- vm: move the eval-breaker body out of the dispatch loop
  
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- vm: always inline the eval stack push/pop primitives
  
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- vm: carry the instruction fetch state in loop locals
  
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  66a38f2
- bytecode: hoist the instruction array base out of the dispatch loop
  
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- common: an immortal bit in the refcount word
  
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- vm: make the singletons, small ints, interned strings and static types immortal
  
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- codecs: fast-path utf-8 decode, skipping the codec registry round trip
  
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- codecs: fast-path utf-8/ascii/latin-1 encode and ascii/latin-1 decode
  
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  50934b9
- vm: make the runtime safe for borrowed stack entries
  
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- vm: read consumed stack entries in place instead of owning them
  
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  54d7782
- vm: turn LOAD_FAST_BORROW into an actual borrow
  
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  0ad8ae3
- vm: exact-dict fast path for DICT_MERGE and CALL_FUNCTION_EX kwargs
  
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  b95c00f
- vm: skip the recursion guard hashing exact ints inside a tuple
  
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  cbcc4b2
- vm: wire slot descriptors from __slots__ into C-level type slots
  
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- frame: stop allocating cold data to close a generator
  
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  ece684e
- function: bind exact args straight into a generator's frame
  
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- frame: drain a dead frame in place instead of moving it out
  
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- vm: don't raise a TypeError to ask an iterator for its length
  
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- gc: track a generator and its frame in one pass
  
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  0c490ae
- dict_inner: fast-path exact-int equality in key_eq
  
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- vm: let the modulus type handle a three-argument pow
  
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- vm: add a feature-gated opcode-pair histogram
  
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- vm: let boolean producers run the branch that follows them
  
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  791e7a0
- Adapt yield-from resume to optional generator frames
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  5f48272
- Fix clippy and cr_origin after try_to_bool/f_lineno changes
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  91928bb
- Convert fd filenames without the os ToPyObject impl
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- Gate fd path helpers on the host_env feature
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  0abc5c9
- Drop redundant pickle try_to_bool clones after rebase
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  a8df5cd
- Document why enumerate keeps a Counter beside BigInt
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- Move fd path helpers into ospath_fd under host_env
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- Group threading eval-breaker bits in one module
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- Make InterpreterFrame construction unsafe
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- Move OsPathOrFd re-export to the top of ospath.rs
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  aa1298b

Commits

Commits on Sep 19, 2026