[Chapel Merge] Add supported LLVM versions to QUICKSTART.rst

Branch: refs/heads/main
Revision: e9f0c66
Author: daviditen
Link: Unavailable
Log Message:

Merge pull request #19183 from daviditen/update-quickstart-llvm-version

Add supported LLVM versions to QUICKSTART.rst

[reviewed by @bradcray]

In the section talking about using CHPL_LLVM=system mention that LLVM versions
11 and 12 are currently supported.

In the section talking about using CHPL_LLVM=bundled mention that CMake 3.13.4
or higher is required to build LLVM.

Signed-off-by: David Iten daviditen@users.noreply.github.com

Modified Files:
M doc/rst/usingchapel/QUICKSTART.rst

Compare: https://github.com/chapel-lang/chapel/compare/8656a41bda2b...e9f0c6684e21