ci: add ci on QEMU for AArch64 JIT implemenation

The old QEMU behaves differently from real CPUs with regard to SVE instructions.
qemu.sh downloads the recnet QEMU source code and builds it.

.github/automation/.drone.yml

@@ -1,5 +1,6 @@
 # *******************************************************************************
 # Copyright 2020 Arm Limited and affiliates.
+# Copyright 2020 FUJITSU LIMITED
 # SPDX-License-Identifier: Apache-2.0
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -113,3 +114,23 @@ steps:
   - .github/automation/build_acl.sh  --version 20.08 --arch arm64-v8a --root-dir $(pwd)/ComputeLibrary
   - .github/automation/build.sh --threading omp --mode Release --source-dir $(pwd) --build-dir $(pwd)/build --acl-dir $(pwd)/ComputeLibrary
   - .github/automation/test.sh --test-kind gtest --build-dir $(pwd)/build --report-dir $(pwd)/report
+
+---
+kind: pipeline
+name: Ubuntu18-JIT
+
+platform:
+  arch: amd64
+
+steps:
+- name: gcc-jit-test
+  image: ubuntu:18.04
+  commands:
+  - apt-get update && apt-get install -y git build-essential cmake binutils-aarch64-linux-gnu crossbuild-essential-arm64 pkg-config-aarch64-linux-gnu python3 wget libglib2.0-dev
+  - .github/automation/env/qemu.sh
+  - export CC=aarch64-linux-gnu-gcc
+  - export CXX=aarch64-linux-gnu-g++
+  - .github/automation/build.sh --threading omp --mode Release --source-dir $(pwd) --build-dir $(pwd)/build --cmake-opt "-DDNNL_TARGET_ARCH=AARCH64 -DCMAKE_SYSTEM_NAME=Linux -DCMAKE_SYSTEM_PROCESSOR=AARCH64 -DCMAKE_FIND_ROOT_PATH=/usr/aarch64-linux-gnu -DDNNL_TARGET_EMULATOR=qemu-aarch64"
+  - export QEMU_LD_PREFIX=/usr/aarch64-linux-gnu
+  - export QEMU_CPU="max,sve512=on"
+  - .github/automation/test.sh --test-kind gtest --build-dir $(pwd)/build --report-dir $(pwd)/report

.github/automation/build.sh

@@ -36,6 +36,9 @@ while [[ $# -gt 0 ]]; do
         --build-dir)
         BUILD_DIR="$2"
         ;;
+        --cmake-opt)
+        CMAKE_OPT="$2"
+        ;;
         *)
         echo "Unknown option: $1"
         exit 1
@@ -45,7 +48,8 @@ while [[ $# -gt 0 ]]; do
     shift
 done
 
-CMAKE_OPTIONS="-DCMAKE_BUILD_TYPE=${BUILD_MODE} -DDNNL_BUILD_FOR_CI=ON -DDNNL_WERROR=ON"
+CMAKE_OPTIONS="-DCMAKE_BUILD_TYPE=${BUILD_MODE} -DDNNL_BUILD_FOR_CI=ON -DDNNL_WERROR=ON ${CMAKE_OPT}"
+
 CPU_RUNTIME="NONE"
 GPU_RUNTIME="NONE"
 

.github/automation/env/qemu.sh

@@ -0,0 +1,25 @@
+#! /bin/bash
+
+#===============================================================================
+# Copyright 2020 FUJITSU LIMITED
+#
+# Licensed 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.
+#===============================================================================
+
+# Download, build and install QEMU
+wget https://download.qemu.org/qemu-5.0.0.tar.xz
+tar xJf qemu-5.0.0.tar.xz > /dev/null
+cd qemu-5.0.0
+./configure --target-list=aarch64-linux-user > /dev/null
+make > /dev/null
+make install > /dev/null