[llvm] b6824c9 - Revert "Reland "[python] Bump Python minimum version to 3.8 (#78828)""

[Aiden Grossman via llvm-commits]

Author: Aiden Grossman
Date: 2024-04-20T14:39:03-07:00
New Revision: b6824c9d459da059e247a60c1ebd1aeb580dacc2

URL: https://github.com/llvm/llvm-project/commit/b6824c9d459da059e247a60c1ebd1aeb580dacc2
DIFF: https://github.com/llvm/llvm-project/commit/b6824c9d459da059e247a60c1ebd1aeb580dacc2.diff

LOG: Revert "Reland "[python] Bump Python minimum version to 3.8 (#78828)""

This reverts commit f2931182fc877e813974a5f53721f859bfb5b130.

This was again causing buildbot failures. #83962 has been updated with the new
failures, notifying the buildbot maintainers that they need to update their
bots.

Added: 
    

Modified: 
    llvm/CMakeLists.txt
    llvm/docs/GettingStarted.rst
    llvm/docs/GettingStartedVS.rst
    llvm/docs/ReleaseNotes.rst
    llvm/docs/TestingGuide.rst

Removed: 
    


################################################################################
diff  --git a/llvm/CMakeLists.txt b/llvm/CMakeLists.txt
index 505870154dbb80..d511376e18ba5e 100644
--- a/llvm/CMakeLists.txt
+++ b/llvm/CMakeLists.txt
@@ -903,8 +903,8 @@ set(LLVM_PROFDATA_FILE "" CACHE FILEPATH
   "Profiling data file to use when compiling in order to improve runtime performance.")
 
 if(LLVM_INCLUDE_TESTS)
-  # All LLVM Python files should be compatible down to this minimum version.
-  set(LLVM_MINIMUM_PYTHON_VERSION 3.8)
+  # Lit test suite requires at least python 3.6
+  set(LLVM_MINIMUM_PYTHON_VERSION 3.6)
 else()
   # FIXME: it is unknown if this is the actual minimum bound
   set(LLVM_MINIMUM_PYTHON_VERSION 3.0)

diff  --git a/llvm/docs/GettingStarted.rst b/llvm/docs/GettingStarted.rst
index 0a1913dca8aac1..7ecef78c405b6f 100644
--- a/llvm/docs/GettingStarted.rst
+++ b/llvm/docs/GettingStarted.rst
@@ -292,16 +292,16 @@ uses the package and provides other details.
 Package                                                     Version      Notes
 =========================================================== ============ ==========================================
 `CMake <http://cmake.org/>`__                               >=3.20.0     Makefile/workspace generator
-`python <http://www.python.org/>`_                          >=3.8        Automated test suite\ :sup:`1`
+`python <http://www.python.org/>`_                          >=3.6        Automated test suite\ :sup:`1`
 `zlib <http://zlib.net>`_                                   >=1.2.3.4    Compression library\ :sup:`2`
 `GNU Make <http://savannah.gnu.org/projects/make>`_         3.79, 3.79.1 Makefile/build processor\ :sup:`3`
 =========================================================== ============ ==========================================
 
 .. note::
 
-   #. Only needed if you want to run the automated test suite in the
-      ``llvm/test`` directory, or if you plan to utilize any Python libraries,
-      utilities, or bindings.
+   #. Only needed if you want to run the automated test suite. Python 3.8.0
+      or later is needed on Windows if a substitute (virtual) drive is used
+      to access LLVM source code due to ``MAX_PATH`` limitations.
    #. Optional, adds compression / uncompression capabilities to selected LLVM
       tools.
    #. Optional, you can use any other build tool supported by CMake.

diff  --git a/llvm/docs/GettingStartedVS.rst b/llvm/docs/GettingStartedVS.rst
index 4b15272635fbeb..a1eb88dccc9e5c 100644
--- a/llvm/docs/GettingStartedVS.rst
+++ b/llvm/docs/GettingStartedVS.rst
@@ -55,7 +55,7 @@ Visual Studio 2019 so separate installation is not required. If you do install
 CMake separately, Visual Studio 2022 will require CMake Version 3.21 or later.
 
 If you would like to run the LLVM tests you will need `Python
-<http://www.python.org/>`_. Version 3.8 and newer are known to work. You can
+<http://www.python.org/>`_. Version 3.6 and newer are known to work. You can
 install Python with Visual Studio 2019, from the Microsoft store or from
 the `Python web site <http://www.python.org/>`_. We recommend the latter since it
 allows you to adjust installation options.

diff  --git a/llvm/docs/ReleaseNotes.rst b/llvm/docs/ReleaseNotes.rst
index 33b61688f7872e..76ef6ceb940780 100644
--- a/llvm/docs/ReleaseNotes.rst
+++ b/llvm/docs/ReleaseNotes.rst
@@ -47,11 +47,6 @@ Non-comprehensive list of changes in this release
 Update on required toolchains to build LLVM
 -------------------------------------------
 
-* The minimum Python version has been raised from 3.6 to 3.8 across all of LLVM.
-  This enables the use of many new Python features, aligning more closely with
-  modern Python best practices, and improves CI maintainability
-  See `#78828 <https://github.com/llvm/llvm-project/pull/78828>`_ for more info.
-
 Changes to the LLVM IR
 ----------------------
 

diff  --git a/llvm/docs/TestingGuide.rst b/llvm/docs/TestingGuide.rst
index 3e3a722f141874..e32e4d1e535abb 100644
--- a/llvm/docs/TestingGuide.rst
+++ b/llvm/docs/TestingGuide.rst
@@ -23,7 +23,7 @@ Requirements
 ============
 
 In order to use the LLVM testing infrastructure, you will need all of the
-software required to build LLVM, as well as `Python <http://python.org>`_ 3.8 or
+software required to build LLVM, as well as `Python <http://python.org>`_ 3.6 or
 later.
 
 LLVM Testing Infrastructure Organization