GeezerVison

…ktor

* upstream/main: (119 commits)
  pythongh-144270: Make SubElement parent and tag positional-only (pythonGH-144845)
  pythongh-146558: JIT optimize dict access for objects with known hash (python#146559)
  pythongh-139922: always run MSVC 64-bit tail-calling CI (pythonGH-146570)
  pythongh-126835: Fix _PY_IS_SMALL_INT() macro (python#146631)
  pythongh-146587: fix type slot assignment incase of multiple slots for same name (python#146593)
  pythongh-138122: Add differential flame graph (python#145785)
  pythongh-146416: Emscripten: Improve standard stream handling in node_entry.mjs (python#146417)
  pythongh-146444: Don't package as part of iOS 'build hosts' target (python#146628)
  pythongh-138850: Add --disable-epoll to configure (pythonGH-145768)
  pythongh-146444: Make Platforms/Apple/ compatible with Python 3.9 (python#146624)
  pythongh-138577: Fix keyboard shortcuts in getpass with echo_char (python#141597)
  pythongh-146556: Fix infinite loop in annotationlib.get_annotations() on circular __wrapped__ (python#146557)
  pythongh-146579: _zstd: Fix decompression options dict error message (python#146577)
  pythongh-146083: Upgrade bundled Expat to 2.7.5 (python#146085)
  pythongh-146080: fix a crash in SNI callbacks when the SSL object is gone (python#146573)
  pythongh-146090: fix memory management of internal `sqlite3` callback contexts (python#146569)
  pythongh-145876: Do not mask KeyErrors raised during dictionary unpacking in call (pythonGH-146472)
  pythongh-146004: fix test_args_from_interpreter_flags on windows (python#146580)
  pythongh-139003: Use frozenset for module level attributes in _pyrepl.utils (python#139004)
  pythonGH-146527: Add more data to GC statistics and add it to PyDebugOffsets (python#146532)
  ...

Differential flame graphs compare two profiling runs and highlight where
performance has changed. This makes it easier to detect regressions
introduced by code changes and to verify that optimizations have the
intended effect.

The visualization renders the current profile with frame widths
representing current time consumption. Color is then applied to show the
difference relative to the baseline profile: red gradients indicate
regressions, while blue gradients indicate improvements.

Some call paths may disappear entirely between profiles. These are
referred to as elided stacks and occur when optimizations remove code
paths or when certain branches stop executing. When elided stacks are
present, an "Elided" toggle is displayed, allowing the user to switch
between the main differential view and a view showing only the removed
paths.

Co-authored-by: Pablo Galindo Salgado <[email protected]>

Differential flame graphs compare two profiling runs and highlight where
performance has changed. This makes it easier to detect regressions
introduced by code changes and to verify that optimizations have the
intended effect.

The visualization renders the current profile with frame widths
representing current time consumption. Color is then applied to show the
difference relative to the baseline profile: red gradients indicate
regressions, while blue gradients indicate improvements.

Some call paths may disappear entirely between profiles. These are
referred to as elided stacks and occur when optimizations remove code
paths or when certain branches stop executing. When elided stacks are
present, an "Elided" toggle is displayed, allowing the user to switch
between the main differential view and a view showing only the removed
paths.

Co-authored-by: Pablo Galindo Salgado <[email protected]>