Index: utils/benchmark.py
===================================================================
--- /dev/null
+++ utils/benchmark.py
@@ -0,0 +1,135 @@
+#!/usr/bin/env python
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+# ==------------------------------------------------------------------------==#
+
+import os
+import glob
+import re
+import subprocess
+import json
+import datetime
+import argparse
+import urllib
+import urllib2
+
+parser = argparse.ArgumentParser()
+parser.add_argument('benchmark_directory')
+parser.add_argument('--runs', type=int, default=10)
+parser.add_argument('--wrapper', default='')
+parser.add_argument('--machine', required=True)
+parser.add_argument('--revision', required=True)
+parser.add_argument('--threads', action='store_true')
+parser.add_argument('--url', help='The lnt server url to send the results to',
+                    default='http://localhost:8000/db_default/v4/link/submitRun')
+args = parser.parse_args()
+
+class Bench:
+    def __init__(self, directory, variant):
+        self.directory = directory
+        self.variant = variant
+    def __str__(self):
+        if not self.variant:
+            return self.directory
+        return '%s-%s' % (self.directory, self.variant)
+
+def getBenchmarks():
+    ret = []
+    for i in glob.glob('*/response*.txt'):
+        m = re.match('response-(.*)\.txt', os.path.basename(i))
+        variant = m.groups()[0] if m else None
+        ret.append(Bench(os.path.dirname(i), variant))
+    return ret
+
+def parsePerfNum(num):
+    num = num.replace(b',',b'')
+    try:
+        return int(num)
+    except ValueError:
+        return float(num)
+
+def parsePerfLine(line):
+    ret = {}
+    line = line.split(b'#')[0].strip()
+    if len(line) != 0:
+        p = line.split()
+        ret[p[1].strip().decode('ascii')] = parsePerfNum(p[0])
+    return ret
+
+def parsePerf(output):
+    ret = {}
+    lines = [x.strip() for x in output.split(b'\n')]
+
+    seconds = [x for x in lines if b'seconds time elapsed' in x][0]
+    seconds = seconds.strip().split()[0].strip()
+    ret['seconds-elapsed'] = parsePerfNum(seconds)
+
+    measurement_lines = [x for x in lines if b'#' in x]
+    for l in measurement_lines:
+        ret.update(parsePerfLine(l))
+    return ret
+
+def run(cmd):
+    try:
+        return subprocess.check_output(cmd, stderr=subprocess.STDOUT)
+    except subprocess.CalledProcessError as e:
+        print(e.output)
+        raise e
+
+def combinePerfRun(acc, d):
+    for k,v in d.items():
+        a = acc.get(k, [])
+        a.append(v)
+        acc[k] = a
+
+def perf(cmd):
+    # Discard the first run to warm up any system cache.
+    run(cmd)
+
+    ret = {}
+    wrapper_args = [x for x in args.wrapper.split(',') if x]
+    for i in range(args.runs):
+        os.unlink('t')
+        out = run(wrapper_args + ['perf', 'stat'] + cmd)
+        r = parsePerf(out)
+        combinePerfRun(ret, r)
+    os.unlink('t')
+    return ret
+
+def runBench(bench):
+    thread_arg = [] if args.threads else ['--no-threads']
+    os.chdir(bench.directory)
+    suffix = '-%s' % bench.variant if bench.variant else ''
+    response = 'response' + suffix + '.txt'
+    ret = perf(['../ld.lld', '@' + response, '-o', 't'] + thread_arg)
+    ret['name'] = str(bench)
+    os.chdir('..')
+    return ret
+
+def buildLntJson(benchmarks):
+    start = datetime.datetime.utcnow().isoformat()
+    tests = [runBench(b) for b in benchmarks]
+    end = datetime.datetime.utcnow().isoformat()
+    ret = {
+        'format_version' : 2,
+        'machine' : { 'name' : args.machine },
+        'run' : {
+            'end_time' : start,
+            'start_time' : end,
+            'llvm_project_revision': args.revision
+        },
+        'tests' : tests
+    }
+    return json.dumps(ret, sort_keys=True, indent=4)
+
+def submitToServer(data):
+    data2 = urllib.urlencode({ 'input_data' : data }).encode('ascii')
+    urllib2.urlopen(urllib2.Request(args.url, data2))
+
+os.chdir(args.benchmark_directory)
+data = buildLntJson(getBenchmarks())
+submitToServer(data)
Index: utils/link.yaml
===================================================================
--- /dev/null
+++ utils/link.yaml
@@ -0,0 +1,39 @@
+format_version: '2'
+name: link
+run_fields:
+  - name: llvm_project_revision
+    order: true
+machine_fields:
+  - name: hardware
+  - name: os
+metrics:
+ - name: branch-misses
+   bigger_is_better: false
+   type: Real
+ - name: stalled-cycles-frontend
+   bigger_is_better: false
+   type: Real
+ - name: branches
+   bigger_is_better: false
+   type: Real
+ - name: context-switches
+   bigger_is_better: false
+   type: Real
+ - name: cpu-migrations
+   bigger_is_better: false
+   type: Real
+ - name: cycles
+   bigger_is_better: false
+   type: Real
+ - name: instructions
+   bigger_is_better: false
+   type: Real
+ - name: seconds-elapsed
+   bigger_is_better: false
+   type: Real
+ - name: page-faults
+   bigger_is_better: false
+   type: Real
+ - name: task-clock
+   bigger_is_better: false
+   type: Real