message: Use LLVM 12.0 by default in scripts/build.sh
diff: #!/bin/bash
  # ##################################################
  -# Copyright (c) 2020, Intel Corporation
  +# Copyright (c) 2020-2022, Intel Corporation
  # All rights reserved.
  #
  # Redistribution and use in source and binary forms, with or without
  @@ -41,7 +41,7 @@ scriptPath="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
  # Default values are below
  ispc_home=${scriptPath}/..
  llvm_dir=${ispc_home}/llvm
  -llvm_version=12.0
  +llvm_versiion=13.0
  ispc_build=${ispc_home}/build
  ispc_install=${ispc_home}/install
  speed=4
  