diff --git a/buildbot/osuosl/master/config/builders.py b/buildbot/osuosl/master/config/builders.py
--- a/buildbot/osuosl/master/config/builders.py
+++ b/buildbot/osuosl/master/config/builders.py
@@ -838,6 +838,23 @@
                         '-DLLVM_ENABLE_ASSERTIONS=ON',
                         '-DLLVM_TARGETS_TO_BUILD=X86'])},
 
+    {'name' : "clang-xcore-ubuntu-20-x64",
+    'tags'  : ["clang"],
+    'workernames' : ["xcore-ubuntu20-x64"],
+    'builddir': "clang-xcore-ubuntu-20-x64",
+    'factory' : ClangBuilder.getClangCMakeBuildFactory(
+                    jobs=4,
+                    test=True,
+                    testStage1=True,
+                    useTwoStage=False,
+                    stage1_config='Release',
+                    extra_cmake_args=[
+                        "-DLLVM_TARGETS_TO_BUILD:STRING=XCore",
+                        "-DLLVM_DEFAULT_TARGET_TRIPLE:STRING=xcore-unknown-unknown-elf",
+                        "-DLLVM_ENABLE_THREADS:BOOL=OFF",
+                        "-DLLVM_ENABLE_PROJECTS:STRING=clang",
+                        "-DLLVM_LIT_ARGS:STRING='--xunit-xml-output xunit.xml -sv'"])},
+
 # Polly builders.
 
     {'name' : "polly-arm-linux",
diff --git a/buildbot/osuosl/master/config/workers.py b/buildbot/osuosl/master/config/workers.py
--- a/buildbot/osuosl/master/config/workers.py
+++ b/buildbot/osuosl/master/config/workers.py
@@ -236,4 +236,7 @@
 
         # Ubuntu 20.04 on AWS, x86_64 PS4 target
         create_worker("sie-linux-builder", properties={'jobs': 40}, max_builds=1),
+
+        # XCore target, Ubuntu 20.04 x64 host
+        create_worker("xcore-ubuntu20-x64", properties={'jobs': 4}, max_builds=1),
         ]