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GH-139922: Tail calling for MSVC (VS 2026) #143068

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Merged
Fidget-Spinner merged 11 commits into from
Dec 22, 2025
+520 −675
Merged

GH-139922: Tail calling for MSVC (VS 2026) #143068

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374874c
rebased + _Py_VectorCallInstrumentation_StackRefSteal
chris-eibl Dec 21, 2025
e0cd0f5
Merge commit '374874c3e6d8c4745a52b3bc22044db607b2c9e7' into msvc-tai…
chris-eibl Dec 21, 2025
7e5555a
try to fix MSVC tail call CI
chris-eibl Dec 22, 2025
a75042a
Alternative to restrict and conditional Py_NO_INLINE for PyMapping_Ge…
chris-eibl Dec 22, 2025
fdfd8a0
make _PyMapping_GetOptionalItem2 private and comment scopes
chris-eibl Dec 22, 2025
058889e
Merge with main because aarch64 jit builds started failing
chris-eibl Dec 22, 2025
c8d051b
Apply suggestions from code review
chris-eibl Dec 22, 2025
ab70524
Update .github/workflows/tail-call.yml
chris-eibl Dec 22, 2025
5c1c240
enable "Emulated Windows Clang (release)"
chris-eibl Dec 22, 2025
a04824f
Merge remote-tracking branch 'upstream/main' into msvc-tail-call-new
chris-eibl Dec 22, 2025
da1adaf
revert to cmd but keep Hugo's other changes
chris-eibl Dec 22, 2025
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Apply suggestions from code review 
Co-authored-by: Hugo van Kemenade <[email protected]>
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@chris-eibl @hugovk
chris-eibl and hugovk authored Dec 22, 2025
commit c8d051ba8122870fdf69e251795d06d883829d3a
4 changes: 2 additions & 2 deletions .github/workflows/tail-call.yml
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Expand Up @@ -81,7 +81,7 @@ jobs:

- name: Native Windows MSVC (release)
if: runner.os == 'Windows' && matrix.architecture != 'ARM64'
shell: cmd
shell: pwsh
run: |
choco install visualstudio2026buildtools -y --force --params "--add Microsoft.VisualStudio.Component.VC.Tools.x86.x64 --locale en-US --passive"
set PATH=C:\Program Files (x86)\Microsoft Visual Studio\18\BuildTools\MSBuild\Current\bin;%PATH%
Expand All @@ -91,7 +91,7 @@ jobs:
# No tests (yet):
- name: Emulated Windows Clang (release)
if: runner.os == 'Windows' && matrix.architecture == 'ARM64'
shell: cmd
shell: pwsh
run: |
choco install llvm --allow-downgrade --no-progress --version ${{ matrix.llvm }}.1.0
set PlatformToolset=clangcl
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