Add new worker debian-akiko-m68k for Linux 32-bit M68k

[glaubitz]

Summary

This adds a new builder called debian-akiko-m68k which will
build LLVM and Clang on Debian unstable on m68k.

[glaubitz]

This should be merged once M68k support has been merged into LLVM, see:

• https://reviews.llvm.org/D88385
• https://reviews.llvm.org/D88386
• https://reviews.llvm.org/D88389
• https://reviews.llvm.org/D88390
• https://reviews.llvm.org/D88391
• https://reviews.llvm.org/D88392
• https://reviews.llvm.org/D88393
• https://reviews.llvm.org/D88394

[gkistanova]

LGTM

[glaubitz]

M68k backend has now landed in LLVM. I just rebased this patch and will start the worker in a minute.

buildbot/osuosl/master/config/builders.py

                     script="clang-windows.py",
                     depends_on_projects=['llvm', 'clang', 'lld', 'debuginfo-tests'])},
 
+    {'name' : "clang-m68k-linux",
+    'tags'  : ["clang"],
+    'workernames' : ["debian-akiko-m68k"],
+    'builddir': "clang-m68k-linux",
+    'factory' : ClangBuilder.getClangCMakeBuildFactory(
+                    clean=False,
+                    checkout_lld=False,
+                    useTwoStage=False,
+                    stage1_config='Release',
+                    extra_cmake_args=[
+                        "-DLLVM_ENABLE_ASSERTIONS=ON",
+                        "-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=M68k"])},
+
     {'name' : "clang-ppc64be-linux-lnt",
     'tags'  : ["clang", "ppc"],
     'workernames' : ["ppc64be-clang-lnt-test"],

buildbot/osuosl/master/config/workers.py

         # Windows Server 2016 Intel(R) Xeon(R) CPU @ 2.60GHz, 16 Core(s), 128 GB of RAM
         create_worker("win-mlir-buildbot", properties={'jobs' : 64}, max_builds=1),
 
+        # Motorola 68k 32-bit big endian (m68k)
+        create_worker("debian-akiko-m68k", properties={'jobs': 1}, max_builds=1),
+
         # POWER7 PowerPC big endian (powerpc64)
         create_worker("ppc64be-clang-test", properties={'jobs': 16}, max_builds=1),
         create_worker("ppc64be-clang-lnt-test", properties={'jobs': 16, 'vcs_protocol': 'https'}, max_builds=1),