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#!/usr/bin/env python
import re, string, sys, os, time

DEBUG = 0
testDirName = 'llvm-test'
test      = ['compile', 'llc', 'jit', 'cbe']
exectime     = ['llc-time', 'jit-time', 'cbe-time',]
comptime     = ['llc', 'jit-comptime', 'compile']

(tp, exp) = ('compileTime_', 'executeTime_')

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(testDirName)
      
      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] = {}
      
      for k in test:
        test[fname][k] = 'NA'
        test[fname][t[1]] = t[0]
        if DEBUG:
          print test[fname][t[1]]
    else :
      try:
        n = t[0].split('RESULT-')[1]
        
        if DEBUG:
          print n;
        
        if n == 'llc' or n == 'jit-comptime' or n == 'compile':
          test[fname][tp + n] = float(t[2].split(' ')[2])
          if DEBUG:
            print test[fname][tp + n]
        
        elif n.endswith('-time') :
            test[fname][exp + n] = float(t[2].strip('\r\n'))
            if DEBUG:
              print test[fname][exp + n]
        
        else :
          print "ERROR!"
          sys.exit(1)
      
      except:
          continue

  return test

# Diff results and look for regressions.
def diffResults(d_old, d_new):

  for t in sorted(d_old.keys()) :
    if DEBUG:
      print t
        
    if d_new.has_key(t) :
    
      # Check if the test passed or failed.
      for x in test:
        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':
                print t + " *** REGRESSION (" + x + ")\n"
            else:
              if d_new[t][x] == 'PASS':
                print t + " * NEW PASS (" + x + ")\n"
                
          else :
            print t + "*** REGRESSION (" + x + ")\n"
        
        # For execution time, if there is no result, its a fail.
        for x in exectime:
          if d_old[t].has_key(tp + x):
            if not d_new[t].has_key(tp + x):
              print t + " *** REGRESSION (" + tp + x + ")\n"
                
          else :
            if d_new[t].has_key(tp + x):
              print t + " * NEW PASS (" + tp + x + ")\n"

       
        for x in comptime:
          if d_old[t].has_key(exp + x):
            if not d_new[t].has_key(exp + x):
              print t + " *** REGRESSION (" + exp + x + ")\n"
                
          else :
            if d_new[t].has_key(exp + x):
              print t + " * NEW PASS (" + exp + x + ")\n"
              
    else :
      print t + ": Removed from test-suite.\n"
    

#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)