--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/utils/release/findRegressions-simple.py	Thu Dec 12 13:56:28 2013 +0900
@@ -0,0 +1,158 @@
+#!/usr/bin/env python
+import re, string, sys, os, time, math
+
+DEBUG = 0
+
+(tp, exp) = ('compile', 'exec')
+
+def parse(file):
+  f = open(file, 'r')
+  d = f.read()
+  
+  # Cleanup weird stuff
+  d = re.sub(r',\d+:\d', '', d)
+
+  r = re.findall(r'TEST-(PASS|FAIL|RESULT.*?):\s+(.*?)\s+(.*?)\r*\n', d)
+
+  test = {}
+  fname = ''
+  for t in r:
+    if DEBUG:
+      print t
+
+    if t[0] == 'PASS' or t[0] == 'FAIL' :
+      tmp = t[2].split('llvm-test/')
+      
+      if DEBUG:
+        print tmp
+
+      if len(tmp) == 2:
+        fname = tmp[1].strip('\r\n')
+      else:
+        fname = tmp[0].strip('\r\n')
+
+      if not test.has_key(fname):
+        test[fname] = {}
+
+      test[fname][t[1] + ' state'] = t[0]
+      test[fname][t[1] + ' time'] = float('nan')
+    else :
+      try:
+        n = t[0].split('RESULT-')[1]
+
+        if DEBUG:
+          print "n == ", n;
+        
+        if n == 'compile-success':
+          test[fname]['compile time'] = float(t[2].split('program')[1].strip('\r\n'))
+
+        elif n == 'exec-success':
+          test[fname]['exec time'] = float(t[2].split('program')[1].strip('\r\n'))
+          if DEBUG:
+            print test[fname][string.replace(n, '-success', '')]
+
+        else :
+          # print "ERROR!"
+          sys.exit(1)
+
+      except:
+          continue
+
+  return test
+
+# Diff results and look for regressions.
+def diffResults(d_old, d_new):
+  regressions = {}
+  passes = {}
+  removed = ''
+
+  for x in ['compile state', 'compile time', 'exec state', 'exec time']:
+    regressions[x] = ''
+    passes[x] = ''
+
+  for t in sorted(d_old.keys()) :
+    if d_new.has_key(t):
+
+      # Check if the test passed or failed.
+      for x in ['compile state', 'compile time', 'exec state', 'exec time']:
+
+        if not d_old[t].has_key(x) and not d_new[t].has_key(x):
+          continue
+
+        if d_old[t].has_key(x):
+          if d_new[t].has_key(x):
+
+            if d_old[t][x] == 'PASS':
+              if d_new[t][x] != 'PASS':
+                regressions[x] += t + "\n"
+            else:
+              if d_new[t][x] == 'PASS':
+                passes[x] += t + "\n"
+
+          else :
+            regressions[x] += t + "\n"
+
+        if x == 'compile state' or x == 'exec state':
+          continue
+
+        # For execution time, if there is no result it's a fail.
+        if not d_old[t].has_key(x) and not d_new[t].has_key(x):
+          continue
+        elif not d_new[t].has_key(x):
+          regressions[x] += t + "\n"
+        elif not d_old[t].has_key(x):
+          passes[x] += t + "\n"
+
+        if math.isnan(d_old[t][x]) and math.isnan(d_new[t][x]):
+          continue
+
+        elif math.isnan(d_old[t][x]) and not math.isnan(d_new[t][x]):
+          passes[x] += t + "\n"
+
+        elif not math.isnan(d_old[t][x]) and math.isnan(d_new[t][x]):
+          regressions[x] += t + ": NaN%\n"
+
+        if d_new[t][x] > d_old[t][x] and d_old[t][x] > 0.0 and \
+              (d_new[t][x] - d_old[t][x]) / d_old[t][x] > .05:
+          regressions[x] += t + ": " + "{0:.1f}".format(100 * (d_new[t][x] - d_old[t][x]) / d_old[t][x]) + "%\n"
+
+    else :
+      removed += t + "\n"
+
+  if len(regressions['compile state']) != 0:
+    print 'REGRESSION: Compilation Failed'
+    print regressions['compile state']
+
+  if len(regressions['exec state']) != 0:
+    print 'REGRESSION: Execution Failed'
+    print regressions['exec state']
+
+  if len(regressions['compile time']) != 0:
+    print 'REGRESSION: Compilation Time'
+    print regressions['compile time']
+
+  if len(regressions['exec time']) != 0:
+    print 'REGRESSION: Execution Time'
+    print regressions['exec time']
+
+  if len(passes['compile state']) != 0:
+    print 'NEW PASSES: Compilation'
+    print passes['compile state']
+
+  if len(passes['exec state']) != 0:
+    print 'NEW PASSES: Execution'
+    print passes['exec state']
+
+  if len(removed) != 0:
+    print 'REMOVED TESTS'
+    print removed
+
+# Main
+if len(sys.argv) < 3 :
+  print 'Usage:', sys.argv[0], '<old log> <new log>'
+  sys.exit(-1)
+
+d_old = parse(sys.argv[1])
+d_new = parse(sys.argv[2])
+
+diffResults(d_old, d_new)