Index: buildbot/osuosl/master/config/builders.py
===================================================================
--- buildbot/osuosl/master/config/builders.py
+++ buildbot/osuosl/master/config/builders.py
@@ -14,6 +14,8 @@
 from zorg.buildbot.builders import ABITestsuitBuilder
 from zorg.buildbot.builders import ClangLTOBuilder3Stage
 
+from buildbot.process.properties import Property
+
 # Plain LLVM builders.
 def _get_llvm_builders():
     return [
@@ -804,7 +806,21 @@
                                              "-DLLVM_DEFAULT_TARGET_TRIPLE=mipsel-unknown-linux-gnu",
                                              "-DLLVM_TARGET_ARCH=Mips"],
                            stage1_upload_directory='clang-cmake-mipsel',
-                           env = {'BOTO_CONFIG': '/var/buildbot/llvmlab-build-artifacts.boto'})},
+                           env = {'BOTO_CONFIG': '/var/buildbot/llvmlab-build-artifacts.boto'},
+                           trigger_after_stage1_upload=['lnt-mipsel'])},
+          ]
+
+def _get_triggerable_builders():
+      return [
+          {'name': "lnt-mipsel",
+           'slavenames': ["mips-kl-ci20_001"],
+           'builddir': "lnt-mipsel",
+           'factory': LNTBuilder.getGCSAndLNTFactory(
+                          nt_flags=[],
+                          env={
+                              'BOTO_CONFIG':
+                                  '/var/buildbot/llvmlab-build-artifacts.boto'},
+                          tester_name='lnt-mipsel')}
           ]
 
 def _get_openmp_builders():
@@ -1165,6 +1181,10 @@
         b['category'] = 'sanitizer'
         yield b
 
+    for b in _get_triggerable_builders():
+        b['category'] = 'triggerable'
+        yield b
+
     for b in _get_openmp_builders():
         b['category'] = 'openmp'
         yield b
Index: buildbot/osuosl/master/config/slaves.py
===================================================================
--- buildbot/osuosl/master/config/slaves.py
+++ buildbot/osuosl/master/config/slaves.py
@@ -113,6 +113,9 @@
         # Cavium Octeon II V0.1, MIPS64r2 little endian, Debian Jessie
         create_slave("mips-kl-erpro001", properties={'jobs' : 2}, max_builds=1),
 
+        # Ingenic XBurst V4.15, FPU V0.0, MIPS32r2 little endian, Debian Jessie
+        create_slave("mips-kl-ci20_001", properties={'jobs' : 1}, max_builds=1),
+
         # Debian Testing x86-64, Intel(R) Core(TM) i7-2700K CPU @ 3.50GHz
         #create_slave("gribozavr1", properties={'jobs': 8}, max_builds=1),
 
Index: buildbot/osuosl/master/master.cfg
===================================================================
--- buildbot/osuosl/master/master.cfg
+++ buildbot/osuosl/master/master.cfg
@@ -224,6 +224,8 @@
                                 "llvm",
                                 "cfe",
                                 "llgo"])))
+c['schedulers'].append(
+    triggerable.Triggerable(name="lnt-mipsel", builderNames=["lnt-mipsel"]))
 
 c['schedulers'].extend(
     config.schedulers.getSingleBranchSchedulers(c['builders'], c['schedulers'])
Index: zorg/buildbot/builders/ClangBuilder.py
===================================================================
--- zorg/buildbot/builders/ClangBuilder.py
+++ zorg/buildbot/builders/ClangBuilder.py
@@ -9,6 +9,7 @@
 from buildbot.steps.shell import WarningCountingShellCommand
 from buildbot.steps.source import SVN
 from buildbot.steps.transfer import FileDownload
+from buildbot.steps.trigger import Trigger
 
 import zorg.buildbot.util.artifacts as artifacts
 import zorg.buildbot.builders.Util as builders_util
@@ -401,6 +402,8 @@
                       name="record GCS url for " + package_name,
                       command=['echo', gcs_url],
                       property=gcs_url_property))
+        # Prevent a second expansion since the timestamp will change.
+        gcs_url = Property(gcs_url_property)
 
     f.addStep(ShellCommand(name='package ' + package_name,
                            command=['tar', 'cvfJ', '../install.tar.xz', '.'],
@@ -416,6 +419,26 @@
                   workdir=install_prefix,
                   env=env))
 
+def addTriggerBuilderSteps(f, builder_names, gcs_url_property=None):
+    """
+    Add steps to trigger other builders.
+
+    builder_names - A sequence containing the builders to trigger.
+    gcs_url_property - The name of a property which containing the GCS URL. It
+                       will be forwarded to the triggered builder.
+    """
+
+    set_properties = {'triggeredBuilders': builder_names}
+    if gcs_url_property:
+        set_properties[gcs_url_property] = Property(gcs_url_property)
+
+    f.addStep(
+        phasedbuilderutils.NamedTrigger(
+            'trigger builders',
+            schedulerNames=builder_names,
+            waitForFinish=False,
+            set_properties=set_properties))
+
 def getClangCMakeGCSBuildFactory(
             clean=True,
             test=True,
@@ -451,7 +474,7 @@
             stage1_upload_directory=None,
 
             # Triggers
-            trigger_after_stage1=[]):
+            trigger_after_stage1_upload=[]):
     return _getClangCMakeBuildFactory(
                clean=clean, test=test, cmake=cmake, jobs=jobs, vs=vs,
                vs_target_arch=vs_target_arch, useTwoStage=useTwoStage,
@@ -462,7 +485,7 @@
                checkout_clang_tools_extra=checkout_clang_tools_extra,
                checkout_compiler_rt=checkout_compiler_rt,
                stage1_upload_directory=stage1_upload_directory,
-               trigger_after_stage1=trigger_after_stage1)
+               trigger_after_stage1_upload=trigger_after_stage1_upload)
 
 def getClangCMakeBuildFactory(
             clean=True,
@@ -539,7 +562,7 @@
             stage1_upload_directory=None,
 
             # Triggers
-            trigger_after_stage1=[]):
+            trigger_after_stage1_upload=[]):
 
     ############# PREPARING
     f = buildbot.process.factory.BuildFactory()
@@ -640,6 +663,10 @@
         addGCSUploadSteps(f, 'stage 1', stage1_install, stage1_upload_directory,
                           env, gcs_url_property='stage1_package_gcs_url')
 
+        if trigger_after_stage1_upload:
+            addTriggerBuilderSteps(f, trigger_after_stage1_upload,
+                                   gcs_url_property='stage1_package_gcs_url')
+
     # Compute the cmake define flag to set the C and C++ compiler to clang. Use
     # clang-cl if we used MSVC for stage1.
     if not vs:
Index: zorg/buildbot/builders/LNTBuilder.py
===================================================================
--- zorg/buildbot/builders/LNTBuilder.py
+++ zorg/buildbot/builders/LNTBuilder.py
@@ -6,7 +6,8 @@
 
 import buildbot
 from buildbot.steps.source.svn import SVN
-from buildbot.process.properties import WithProperties
+from buildbot.process.properties import WithProperties, Property
+from buildbot.steps.shell import ShellCommand
 
 import zorg
 from zorg.buildbot.builders import ClangBuilder
@@ -60,6 +61,44 @@
 
     return f
 
+def addGCSDownloadSteps(f, gcs_url, env):
+    """
+    Add steps to download from the Google Cloud Storage bucket.
+
+    f - The BuildFactory to modify.
+    gcs_url - The GCS URL of the package to download.
+    env - The environment to use. Set BOTO_CONFIG to use a configuration file
+          in a non-standard location, and BUCKET to use a different GCS bucket.
+    """
+    f.addStep(ShellCommand(name='download from storage bucket',
+                           command=['gsutil', 'cp', gcs_url,
+                                    'toolchain.tar.xz'],
+                           description='downloading from storage bucket...',
+                           haltOnFailure=True,
+                           workdir='llvm.install',
+                           env=env))
+
+    f.addStep(ShellCommand(name="remove old toolchain",
+                           command=["rm", "-rf", 'install'],
+                           haltOnFailure=True,
+                           description=["removing old toolchain..."],
+                           workdir="."))
+
+    f.addStep(ShellCommand(name="unpack toolchain",
+                           command=['tar', 'xvfJ', 'toolchain.tar.xz'],
+                           haltOnFailure=True,
+                           description=["unpacking toolchain..."],
+                           workdir="llvm.install"))
+
+def getGCSAndLNTFactory(nt_flags, env={}, tester_name=None):
+    f = buildbot.process.factory.BuildFactory()
+    addGCSDownloadSteps(f, Property('stage1_package_gcs_url'), env=env)
+    cc_path = 'llvm.install/bin/clang'
+    cxx_path = 'llvm.install/bin/clang++'
+    AddLNTTestsToFactory(f, nt_flags, cc_path=cc_path,
+                         cxx_path=cxx_path, testerName=tester_name);
+    return f
+
 def AddLNTTestsToFactory(f, nt_flags, cc_path, cxx_path, **kwargs):
     """
     Add the buildbot steps necessary to run an LNT driven test of a compiler.