[llvm-branch-commits] [llvm] [lldb][windows] switch to Python 3.11 for the non ARM64 release builds (#175796) (PR #176387)

[Tom Stellard via llvm-branch-commits]

https://github.com/tstellar updated https://github.com/llvm/llvm-project/pull/176387

>From 2c6181de915cdb410525534d39bfc7ec886fe05e Mon Sep 17 00:00:00 2001
From: Charles Zablit <c_zablit at apple.com>
Date: Fri, 16 Jan 2026 10:36:52 +0000
Subject: [PATCH] [lldb][windows] switch to Python 3.11 for the non ARM64
 release builds (#175796)

This patch is a follow up to
[RFC#89434](https://discourse.llvm.org/t/rfc-sync-python-versions-on-windows/89434).

Python 3.11 is the first official Python.org release to have an arm64
installer on Windows, which is why it's the version used to build the
toolchain on arm64 Windows. The x86 and x64 variants of the toolchain
both use Python 3.10 which can be confusing for users who get different
install dependencies based on their architectures.

This patch syncs all the required Pythons to install the toolchain, by
bumping the requirements to 3.11 for x86, x64 and arm64 Windows.

(cherry picked from commit 301c0d91b558a31a8d907b206070427b8eaa60dd)
---
 .github/workflows/release-binaries.yml    | 4 ++--
 llvm/utils/release/build_llvm_release.bat | 6 +++---
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/.github/workflows/release-binaries.yml b/.github/workflows/release-binaries.yml
index e58b3443808f0..a727cf5d929c5 100644
--- a/.github/workflows/release-binaries.yml
+++ b/.github/workflows/release-binaries.yml
@@ -215,13 +215,13 @@ jobs:
     # get changed unexpectedly.
     - uses: actions/setup-python at 83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
       with:
-        python-version: '3.10'
+        python-version: '3.11.9'
 
     # For some reason this is needed on Windows or else the build system can't find python3.lib.
     - name: Setup Python library path
       if: runner.os == 'Windows'
       run: |
-        echo "LIB=$env:LIB;C:\hostedtoolcache\windows\Python\3.10.11\x64\libs" >> $env:GITHUB_ENV
+        echo "LIB=$env:LIB;C:\hostedtoolcache\windows\Python\3.11.9\x64\libs" >> $env:GITHUB_ENV
 
     - name: Setup crlf
       if: runner.os == 'Windows'
diff --git a/llvm/utils/release/build_llvm_release.bat b/llvm/utils/release/build_llvm_release.bat
index 8bedb6eda6e86..a5c461662bb37 100644
--- a/llvm/utils/release/build_llvm_release.bat
+++ b/llvm/utils/release/build_llvm_release.bat
@@ -19,7 +19,7 @@ echo --x86: build and test x86 variant
 echo --x64: build and test x64 variant
 echo --arm64: build and test arm64 variant
 echo --skip-checkout: use local git checkout instead of downloading src.zip
-echo --local-python: use installed Python and does not try to use a specific version (3.10)
+echo --local-python: use installed Python and does not try to use a specific version (3.11)
 echo --force-msvc: use MSVC compiler for stage0, even if clang-cl is present
 echo.
 echo Note: At least one variant to build is required.
@@ -115,8 +115,8 @@ echo Using VS devcmd: %vsdevcmd%
 :: start echoing what we do
 @echo on
 
-set python32_dir=C:\Users\%USERNAME%\AppData\Local\Programs\Python\Python310-32
-set python64_dir=C:\Users\%USERNAME%\AppData\Local\Programs\Python\Python310
+set python32_dir=C:\Users\%USERNAME%\AppData\Local\Programs\Python\Python311-32
+set python64_dir=C:\Users\%USERNAME%\AppData\Local\Programs\Python\Python311
 set pythonarm64_dir=C:\Users\%USERNAME%\AppData\Local\Programs\Python\Python311-arm64
 
 set revision=llvmorg-%version%