[PowerPC] [Buildbots] Looking to add lld buildbot for PowerPC

[stefanp]

Summary

Looking to add a multistage lld buildbot for PowerPC on Little Endian Linux.

[gkistanova]

LGTM

[stefanp]

@gkistanova
Hi Galina,
Thank you for approving this.
I'm sorry but I have to change it a little bit. I just realized that the previous changeset was setting -DLLVM_ENABLE_LLD on both stage1 and stage2 builds and that won't work. We just want that option on stage2.

I'll post this as well in case you want to see how I've made the change.

[stefanp]

This patch was committed by Galina in r352652.

Thank you Galina!

buildbot/osuosl/master/config/builders.py

return [
          'category'   : 'lld'},
 
         {'name' : "lld-perf-testsuite",
          'slavenames' : ["as-bldslv8"],
          'builddir' : "lld-perf-testsuite",
          'factory': LLDPerformanceTestsuite.getFactory(targets=["bin/lld"]),
          'category'   : 'lld'},
 
+        {'name' : "ppc64le-lld-multistage-test",
+         'slavenames' : ["ppc64le-lld-multistage-test"],
+         'builddir' : "ppc64le-lld-multistage-test",
+         'factory': UnifiedTreeBuilder.getCmakeWithNinjaMultistageBuildFactory(
+                                    extra_configure_args=[
+                                        '-DLLVM_ENABLE_ASSERTIONS=ON', 
+                                        '-DBUILD_SHARED_LIBS=ON'],
+                                    depends_on_projects=['llvm', 'clang', 'lld']), 
+         'category'   : 'lld'},
+
+
         ]
 
 # llgo builders.
 def _get_llgo_builders():
     return [
     ]
 #Offline
 {'name': "llgo-x86_64-linux",

buildbot/osuosl/master/config/slaves.py

return [
         create_slave("ppc64be-clang-multistage-test", properties={'jobs': 16}, max_builds=1),
         create_slave("ppc64be-sanitizer", properties={'jobs': 16}, max_builds=1),
 
         # POWER 8 PowerPC little endian (powerpc64le)
         create_slave("ppc64le-clang-test", properties={'jobs': 4}, max_builds=1),
         create_slave("ppc64le-clang-lnt-test", properties={'jobs': 8}, max_builds=1),
         create_slave("ppc64le-clang-multistage-test", properties={'jobs': 8}, max_builds=1),
         create_slave("ppc64le-sanitizer", properties={'jobs': 4}, max_builds=1),
+        create_slave("ppc64le-lld-multistage-test", properties={'jobs': 40}, max_builds=1),
         
         # POWER 8 PowerPC little endian (powerpc64le) with NVIDIA GPUs
         create_slave("ppc64le-nvidia-K40", properties={'jobs': 4}, max_builds=1),
 
         # POWER 8 PowerPC little endian (powerpc64le) with NVIDIA Pascal GPUs
         create_slave("ppc64le-nvidia-P100", properties={'jobs': 4}, max_builds=1),
 
         # Ubuntu x86-64, Intel(R) Xeon(R) CPU E5-2680 0 @ 2.70GHz