[PATCH] D78762: build: use `find_package(Python3)` if available

[Saleem Abdulrasool via Phabricator via llvm-commits]

compnerd updated this revision to Diff 259720.
compnerd retitled this revision from "build: use `find_package(Python2)` if available" to "build: use `find_package(Python3)` if available".
compnerd edited the summary of this revision.
compnerd added a comment.

After a discussion with @smeenai switch immediately to python3 as this may otherwise be treated as a regression for people on CMake>=3.12 and already using python3.  For those who are using older releases, the old behaviour is preserved with an alternate variable name being referenced.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D78762/new/

https://reviews.llvm.org/D78762

Files:
  llvm/CMakeLists.txt
  llvm/cmake/config-ix.cmake
  llvm/cmake/modules/AddLLVM.cmake
  llvm/test/lit.site.cfg.py.in

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