WIP: Add a script for doing a PGO release build with docker

Author: mstorsjo

docker-build-pgo.sh

@@ -0,0 +1,26 @@
+#!/bin/sh
+#
+# Copyright (c) 2025 Martin Storsjo
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+set -ex
+
+time docker build -f Dockerfile.dev . -t llvm-mingw:dev
+docker run --rm llvm-mingw:dev sh -c "cd /opt && tar -Jcvf - --format=ustar --numeric-owner --owner=0 --group=0 llvm-mingw" > llvm-mingw-stage1.tar.xz
+time docker build -f Dockerfile.profile . -t llvm-mingw:profile --build-arg BASE=llvm-mingw:dev
+./extract-docker.sh llvm-mingw:profile profile.profdata
+time docker build -f Dockerfile.pgo . -t llvm-mingw:pgo --build-arg BASE=llvm-mingw:dev
+docker run --rm llvm-mingw:pgo sh -c "cd /opt && tar -Jcvf - --format=ustar --numeric-owner --owner=0 --group=0 llvm-mingw-pgo" > llvm-mingw-pgo.tar.xz
+time docker build -f Dockerfile.cross . -t llvm-mingw:cross --build-arg BASE=llvm-mingw:dev
+./extract-docker.sh llvm-mingw:cross /llvm-mingw-x86_64.zip