gitlab-ci: add Fossilize support to detect compiler regressions

Fossilize is equivalent to vkpipeline-db but it's definitely more
robust. This is based on the CI traces system.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3960>

.gitlab-ci.yml

@@ -639,6 +639,11 @@ piglit-quick_shader:
   variables:
     DEQP_VER: vk
 
+.fossilize-test:
+  extends: .test-vk
+  script:
+    - ./artifacts/fossilize-runner.sh
+
 llvmpipe-gles2:
   variables:
     DEQP_VER: gles2

.gitlab-ci/fossilize-runner.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+set -ex
+
+if [ -z "$VK_DRIVER" ]; then
+   echo 'VK_DRIVER must be to something like "radeon" or "intel" for the test run'
+   exit 1
+fi
+
+ARTIFACTS=`pwd`/artifacts
+
+# Set up the driver environment.
+export LD_LIBRARY_PATH=`pwd`/install/lib/
+export VK_ICD_FILENAMES=`pwd`/install/share/vulkan/icd.d/"$VK_DRIVER"_icd.x86_64.json
+
+"$ARTIFACTS/fossils/fossils.sh" "$ARTIFACTS/fossils.yml"

.gitlab-ci/fossils/fossils.sh

@@ -0,0 +1,71 @@
+#!/usr/bin/env bash
+
+FOSSILS_SCRIPT_DIR="$(dirname "$(readlink -f "$0")")"
+FOSSILS_YAML="$(readlink -f "$1")"
+
+clone_fossils_db()
+{
+    local repo="$1"
+    local commit="$2"
+    rm -rf fossils-db
+    git clone --no-checkout "$repo" fossils-db
+    (cd fossils-db; git reset "$commit" || git reset "origin/$commit")
+}
+
+query_fossils_yaml()
+{
+    python3 "$FOSSILS_SCRIPT_DIR/query_fossils_yaml.py" \
+        --file "$FOSSILS_YAML" "$@"
+}
+
+create_clean_git()
+{
+    rm -rf .clean_git
+    cp -R .git .clean_git
+}
+
+restore_clean_git()
+{
+    rm -rf .git
+    cp -R .clean_git .git
+}
+
+fetch_fossil()
+{
+    local fossil="${1//,/?}"
+    echo -n "[fetch_fossil] Fetching $1... "
+    local output=$(git lfs pull -I "$fossil" 2>&1)
+    local ret=0
+    if [[ $? -ne 0 || ! -f "$1" ]]; then
+        echo "ERROR"
+        echo "$output"
+        ret=1
+    else
+        echo "OK"
+    fi
+    restore_clean_git
+    return $ret
+}
+
+if [[ -n "$(query_fossils_yaml fossils_db_repo)" ]]; then
+    clone_fossils_db "$(query_fossils_yaml fossils_db_repo)" \
+                     "$(query_fossils_yaml fossils_db_commit)"
+    cd fossils-db
+else
+    echo "Warning: No fossils-db entry in $FOSSILS_YAML, assuming fossils-db is current directory"
+fi
+
+# During git operations various git objects get created which
+# may take up significant space. Store a clean .git instance,
+# which we restore after various git operations to keep our
+# storage consumption low.
+create_clean_git
+
+for fossil in $(query_fossils_yaml fossils)
+do
+    fetch_fossil "$fossil" || exit $?
+    fossilize-replay $fossil || exit $?
+    rm $fossil
+done
+
+exit $ret

.gitlab-ci/fossils/query_fossils_yaml.py

@@ -0,0 +1,69 @@
+#!/usr/bin/python3
+
+# Copyright (c) 2019 Collabora Ltd
+# Copyright (c) 2020 Valve Corporation
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+#
+# SPDX-License-Identifier: MIT
+
+import argparse
+import yaml
+
+def cmd_fossils_db_repo(args):
+    with open(args.file, 'r') as f:
+        y = yaml.safe_load(f)
+    print(y['fossils-db']['repo'])
+
+def cmd_fossils_db_commit(args):
+    with open(args.file, 'r') as f:
+        y = yaml.safe_load(f)
+    print(y['fossils-db']['commit'])
+
+def cmd_fossils(args):
+    with open(args.file, 'r') as f:
+        y = yaml.safe_load(f)
+
+    fossils = list(y['fossils'])
+    if len(fossils) == 0:
+        return
+
+    print('\n'.join((t['path'] for t in fossils)))
+
+def main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--file', required=True,
+                        help='the name of the yaml file')
+
+    subparsers = parser.add_subparsers(help='sub-command help')
+
+    parser_fossils_db_repo = subparsers.add_parser('fossils_db_repo')
+    parser_fossils_db_repo.set_defaults(func=cmd_fossils_db_repo)
+
+    parser_fossils_db_commit = subparsers.add_parser('fossils_db_commit')
+    parser_fossils_db_commit.set_defaults(func=cmd_fossils_db_commit)
+
+    parser_fossils = subparsers.add_parser('fossils')
+    parser_fossils.set_defaults(func=cmd_fossils)
+
+    args = parser.parse_args()
+    args.func(args)
+
+if __name__ == "__main__":
+    main()

.gitlab-ci/prepare-artifacts.sh

@@ -30,6 +30,8 @@ cp -Rp .gitlab-ci/traces.yml artifacts/
 cp -Rp .gitlab-ci/tracie artifacts/
 cp -Rp .gitlab-ci/tracie-runner-gl.sh artifacts/
 cp -Rp .gitlab-ci/tracie-runner-vk.sh artifacts/
+cp -Rp .gitlab-ci/fossils artifacts/
+cp -Rp .gitlab-ci/fossilize-runner.sh artifacts/
 
 # Tar up the install dir so that symlinks and hardlinks aren't each
 # packed separately in the zip file.