[Docker] Add script to build llvm from source

This allows us to use the latest llvm and make sure it builds with the same configuration as the rest of tvm

Change-Id: I004ec89700498167c632d25f4fdf667922ba4943

docker/Dockerfile.ci_arm

@@ -50,8 +50,8 @@ COPY install/ubuntu_install_sccache.sh /install/ubuntu_install_sccache.sh
 RUN bash /install/ubuntu_install_sccache.sh
 ENV PATH /opt/sccache:$PATH
 
-COPY install/ubuntu_install_llvm.sh /install/ubuntu_install_llvm.sh
-RUN bash /install/ubuntu_install_llvm.sh
+COPY install/ubuntu_install_llvm_from_source.sh /install/ubuntu_install_llvm_from_source.sh
+RUN bash /install/ubuntu_install_llvm_from_source.sh 15.0
 
 ENV TVM_VENV /venv/apache-tvm-py3.7
 COPY python/bootstrap/lockfiles /install/python/bootstrap/lockfiles

docker/install/ubuntu_install_llvm_from_source.sh

@@ -0,0 +1,99 @@
+#!/bin/bash
+
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# This script builds LLVM and clang from the llvm-project tarball
+# using CMake. It is tested with LLVM from version 15.
+
+set -e
+
+LLVM_VERSION_MAJOR=$1
+
+detect_llvm_version() {
+  curl -sL "https://api.github.com/repos/llvm/llvm-project/releases?per_page=100" | \
+    grep tag_name | \
+    grep -o "llvmorg-${LLVM_VERSION_MAJOR}[^\"]*" | \
+    grep -v rc | \
+    sed -e "s/^llvmorg-//g" | \
+    head -n 1
+}
+
+LLVM_VERSION=$(detect_llvm_version)
+echo ${LLVM_VERSION}
+
+curl -sL \
+  https://github.com/llvm/llvm-project/releases/download/llvmorg-${LLVM_VERSION}/llvm-project-${LLVM_VERSION}.src.tar.xz \
+  -o llvm-project-${LLVM_VERSION}.src.tar.xz
+unxz llvm-project-${LLVM_VERSION}.src.tar.xz
+tar xf llvm-project-${LLVM_VERSION}.src.tar
+pushd llvm-project-${LLVM_VERSION}.src
+
+pushd llvm
+mkdir build
+pushd build
+cmake \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DCMAKE_MODULE_PATH="/llvm-project-${LLVM_VERSION}.src/cmake/Modules" \
+    -DCMAKE_INSTALL_PREFIX=/usr \
+    -DLLVM_TARGETS_TO_BUILD="AArch64;ARM;X86" \
+    -DLLVM_INCLUDE_DOCS=OFF \
+    -DLLVM_INCLUDE_EXAMPLES=OFF \
+    -DLLVM_INCLUDE_TESTS=OFF \
+    -DLLVM_INCLUDE_UTILS=OFF \
+    -DLLVM_ENABLE_TERMINFO=OFF \
+    -DLLVM_ENABLE_ASSERTIONS=ON \
+    -DLLVM_ENABLE_RTTI=ON \
+    -DLLVM_ENABLE_OCAMLDOC=OFF \
+    -DLLVM_USE_INTEL_JITEVENTS=ON \
+    -DLLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN=ON \
+    -DPYTHON_EXECUTABLE="$(cpython_path 3.7)/bin/python" \
+    -GNinja \
+    ..
+ninja install
+popd
+popd
+rm -rf llvm-${LLVM_VERSION}.src.tar.xz llvm-${LLVM_VERSION}.src.tar llvm-${LLVM_VERSION}.src
+
+# clang is only used to precompile Gandiva bitcode
+if [ ${LLVM_VERSION_MAJOR} -lt 9 ]; then
+  clang_package_name=cfe
+else
+  clang_package_name=clang
+fi
+
+pushd ${clang_package_name}
+mkdir build
+pushd build
+cmake \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DCMAKE_INSTALL_PREFIX=/usr \
+    -DCMAKE_MODULE_PATH="/llvm-project-${LLVM_VERSION}.src/cmake/Modules" \
+    -DCLANG_INCLUDE_TESTS=OFF \
+    -DCLANG_INCLUDE_DOCS=OFF \
+    -DLLVM_INCLUDE_TESTS=OFF \
+    -DLLVM_INCLUDE_DOCS=OFF \
+    -Wno-dev \
+    -GNinja \
+    ..
+
+ninja -w dupbuild=warn install # both clang and llvm builds generate llvm-config file
+popd
+popd
+
+# out of llvm-project-${LLVM_VERSION}.src
+popd
+rm -rf ${clang_package_name}-${LLVM_VERSION}.src.tar.xz ${clang_package_name}-${LLVM_VERSION}.src.tar ${clang_package_name}-${LLVM_VERSION}.src

tests/scripts/task_config_build_arm.sh

@@ -28,7 +28,7 @@ echo set\(USE_RPC ON\) >> config.cmake
 echo set\(USE_MICRO ON\) >> config.cmake
 echo set\(USE_MICRO_STANDALONE_RUNTIME ON\) >> config.cmake
 echo set\(USE_PROFILER ON\) >> config.cmake
-echo set\(USE_LLVM llvm-config-8\) >> config.cmake
+echo set\(USE_LLVM llvm-config\) >> config.cmake
 echo set\(CMAKE_CXX_FLAGS -Werror\) >> config.cmake
 echo set\(USE_VTA_FSIM ON\) >> config.cmake
 echo set\(USE_ARM_COMPUTE_LIB ON\) >> config.cmake