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GH-100982: RestrictFOR_ITER_RANGE
to a single instruction to allow instrumentation.#101985
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Merged
markshannon merged 2 commits intopython:mainfromfaster-cpython:restrict-for-iter-specializations-to-one-instructionFeb 22, 2023
Merged
GH-100982: RestrictFOR_ITER_RANGE
to a single instruction to allow instrumentation.#101985
markshannon merged 2 commits intopython:mainfromfaster-cpython:restrict-for-iter-specializations-to-one-instructionFeb 22, 2023
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markshannon commentedFeb 17, 2023 • edited
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A little bit slower "x1.00 slower": I'm not worried by this slowdown because:
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brandtbucher approved these changesFeb 21, 2023
carljm added a commit to carljm/cpython that referenced this pull requestFeb 23, 2023
* main: (76 commits) Fix syntax error in struct doc example (python#102160)pythongh-99108: Import MD5 and SHA1 from HACL* (python#102089)pythonGH-101777: `queue.rst`: use 2 spaces after a period to be consistent. (python#102143) Few coverage nitpicks for the cmath module (python#102067)pythonGH-100982: Restrict `FOR_ITER_RANGE` to a single instruction to allow instrumentation. (pythonGH-101985)pythongh-102135: Update turtle docs to rename wikipedia demo to rosette (python#102137)pythongh-99942: python.pc on android/cygwin should link to libpython per configure.ac (pythonGH-100356)pythongh-95672 fix typo SkitTest to SkipTest (pythongh-102119)pythongh-101936: Update the default value of fp from io.StringIO to io.BytesIO (pythongh-102100)pythongh-102008: simplify test_except_star by using sys.exception() instead of sys.exc_info() (python#102009)pythongh-101903: Remove obsolete undefs for previously removed macros Py_EnterRecursiveCall and Py_LeaveRecursiveCall (python#101923)pythongh-100556: Improve clarity of `or` docs (python#100589)pythongh-101777: Make `PriorityQueue` docs slightly clearer (python#102026)pythongh-101965: Fix usage of Py_EnterRecursiveCall return value in _bisectmodule.c (pythonGH-101966)pythongh-101578: Amend exception docs (python#102057)pythongh-101961 fileinput.hookcompressed should not set the encoding value for the binary mode (pythongh-102068)pythongh-102056: Fix a few bugs in error handling of exception printing code (python#102078)pythongh-102011: use sys.exception() instead of sys.exc_info() in docs where possible (python#102012)pythongh-101566: Sync with zipp 3.14. (pythonGH-102018)pythonGH-99818: improve the documentation for zipfile.Path and Traversable (pythonGH-101589) ...
JelleZijlstra pushed a commit to JelleZijlstra/cpython that referenced this pull requestSep 10, 2024
… allow instrumentation. (pythonGH-101985)
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Currently
FOR_ITER_RANGE
is a superinstruction, specializing aFOR_ITER; STORE_FAST
pair.This is a problem for instrumentation which assumes the PEP 659 promise that all specializations are atomic.
This PR restricts
FOR_ITER_RANGE
to a single instruction.