diff --git a/poky/scripts/lib/resulttool/regression.py b/poky/scripts/lib/resulttool/regression.py
new file mode 100644
index 0000000..bdf531d
--- /dev/null
+++ b/poky/scripts/lib/resulttool/regression.py
@@ -0,0 +1,192 @@
+# resulttool - regression analysis
+#
+# Copyright (c) 2019, Intel Corporation.
+# Copyright (c) 2019, Linux Foundation
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms and conditions of the GNU General Public License,
+# version 2, as published by the Free Software Foundation.
+#
+# This program is distributed in the hope it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+# more details.
+#
+import resulttool.resultutils as resultutils
+import json
+
+from oeqa.utils.git import GitRepo
+import oeqa.utils.gitarchive as gitarchive
+
+def compare_result(logger, base_name, target_name, base_result, target_result):
+    base_result = base_result.get('result')
+    target_result = target_result.get('result')
+    result = {}
+    if base_result and target_result:
+        for k in base_result:
+            base_testcase = base_result[k]
+            base_status = base_testcase.get('status')
+            if base_status:
+                target_testcase = target_result.get(k, {})
+                target_status = target_testcase.get('status')
+                if base_status != target_status:
+                    result[k] = {'base': base_status, 'target': target_status}
+            else:
+                logger.error('Failed to retrieved base test case status: %s' % k)
+    if result:
+        resultstring = "Regression: %s\n            %s\n" % (base_name, target_name)
+        for k in sorted(result):
+            resultstring += '    %s: %s -> %s\n' % (k, result[k]['base'], result[k]['target'])
+    else:
+        resultstring = "Match: %s\n       %s" % (base_name, target_name)
+    return result, resultstring
+
+def get_results(logger, source):
+    return resultutils.load_resultsdata(source, configmap=resultutils.regression_map)
+
+def regression(args, logger):
+    base_results = get_results(logger, args.base_result)
+    target_results = get_results(logger, args.target_result)
+
+    regression_common(args, logger, base_results, target_results)
+
+def regression_common(args, logger, base_results, target_results):
+    if args.base_result_id:
+        base_results = resultutils.filter_resultsdata(base_results, args.base_result_id)
+    if args.target_result_id:
+        target_results = resultutils.filter_resultsdata(target_results, args.target_result_id)
+
+    matches = []
+    regressions = []
+    notfound = []
+
+    for a in base_results:
+        if a in target_results:
+            base = list(base_results[a].keys())
+            target = list(target_results[a].keys())
+            # We may have multiple base/targets which are for different configurations. Start by 
+            # removing any pairs which match
+            for c in base.copy():
+                for b in target.copy():
+                    res, resstr = compare_result(logger, c, b, base_results[a][c], target_results[a][b])
+                    if not res:
+                        matches.append(resstr)
+                        base.remove(c)
+                        target.remove(b)
+                        break
+            # Should only now see regressions, we may not be able to match multiple pairs directly
+            for c in base:
+                for b in target:
+                    res, resstr = compare_result(logger, c, b, base_results[a][c], target_results[a][b])
+                    if res:
+                        regressions.append(resstr)
+        else:
+            notfound.append("%s not found in target" % a)
+    print("\n".join(sorted(matches)))
+    print("\n".join(sorted(regressions)))
+    print("\n".join(sorted(notfound)))
+
+    return 0
+
+def regression_git(args, logger):
+    base_results = {}
+    target_results = {}
+
+    tag_name = "{branch}/{commit_number}-g{commit}/{tag_number}"
+    repo = GitRepo(args.repo)
+
+    revs = gitarchive.get_test_revs(logger, repo, tag_name, branch=args.branch)
+
+    if args.branch2:
+        revs2 = gitarchive.get_test_revs(logger, repo, tag_name, branch=args.branch2)
+        if not len(revs2):
+            logger.error("No revisions found to compare against")
+            return 1
+        if not len(revs):
+            logger.error("No revision to report on found")
+            return 1
+    else:
+        if len(revs) < 2:
+            logger.error("Only %d tester revisions found, unable to generate report" % len(revs))
+            return 1
+
+    # Pick revisions
+    if args.commit:
+        if args.commit_number:
+            logger.warning("Ignoring --commit-number as --commit was specified")
+        index1 = gitarchive.rev_find(revs, 'commit', args.commit)
+    elif args.commit_number:
+        index1 = gitarchive.rev_find(revs, 'commit_number', args.commit_number)
+    else:
+        index1 = len(revs) - 1
+
+    if args.branch2:
+        revs2.append(revs[index1])
+        index1 = len(revs2) - 1
+        revs = revs2
+
+    if args.commit2:
+        if args.commit_number2:
+            logger.warning("Ignoring --commit-number2 as --commit2 was specified")
+        index2 = gitarchive.rev_find(revs, 'commit', args.commit2)
+    elif args.commit_number2:
+        index2 = gitarchive.rev_find(revs, 'commit_number', args.commit_number2)
+    else:
+        if index1 > 0:
+            index2 = index1 - 1
+            # Find the closest matching commit number for comparision
+            # In future we could check the commit is a common ancestor and
+            # continue back if not but this good enough for now
+            while index2 > 0 and revs[index2].commit_number > revs[index1].commit_number:
+                index2 = index2 - 1
+        else:
+            logger.error("Unable to determine the other commit, use "
+                      "--commit2 or --commit-number2 to specify it")
+            return 1
+
+    logger.info("Comparing:\n%s\nto\n%s\n" % (revs[index1], revs[index2]))
+
+    base_results = resultutils.git_get_result(repo, revs[index1][2])
+    target_results = resultutils.git_get_result(repo, revs[index2][2])
+
+    regression_common(args, logger, base_results, target_results)
+
+    return 0
+
+def register_commands(subparsers):
+    """Register subcommands from this plugin"""
+
+    parser_build = subparsers.add_parser('regression', help='regression file/directory analysis',
+                                         description='regression analysis comparing the base set of results to the target results',
+                                         group='analysis')
+    parser_build.set_defaults(func=regression)
+    parser_build.add_argument('base_result',
+                              help='base result file/directory for the comparison')
+    parser_build.add_argument('target_result',
+                              help='target result file/directory to compare with')
+    parser_build.add_argument('-b', '--base-result-id', default='',
+                              help='(optional) filter the base results to this result ID')
+    parser_build.add_argument('-t', '--target-result-id', default='',
+                              help='(optional) filter the target results to this result ID')
+
+    parser_build = subparsers.add_parser('regression-git', help='regression git analysis',
+                                         description='regression analysis comparing base result set to target '
+                                                     'result set',
+                                         group='analysis')
+    parser_build.set_defaults(func=regression_git)
+    parser_build.add_argument('repo',
+                              help='the git repository containing the data')
+    parser_build.add_argument('-b', '--base-result-id', default='',
+                              help='(optional) default select regression based on configurations unless base result '
+                                   'id was provided')
+    parser_build.add_argument('-t', '--target-result-id', default='',
+                              help='(optional) default select regression based on configurations unless target result '
+                                   'id was provided')
+
+    parser_build.add_argument('--branch', '-B', default='master', help="Branch to find commit in")
+    parser_build.add_argument('--branch2', help="Branch to find comparision revisions in")
+    parser_build.add_argument('--commit', help="Revision to search for")
+    parser_build.add_argument('--commit-number', help="Revision number to search for, redundant if --commit is specified")
+    parser_build.add_argument('--commit2', help="Revision to compare with")
+    parser_build.add_argument('--commit-number2', help="Revision number to compare with, redundant if --commit2 is specified")
+