[Analyzer] [Tests] Do not discard output from CmpRuns.py when running integration tests

Contrary to the deleted comment, in most cases CmpRuns.py produces a
fairly small amount of output, which is useful to see straight away to
see what has changed when executing the integration tests.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@316618 91177308-0d34-0410-b5e6-96231b3b80d8

Author: George Karpenkov

utils/analyzer/SATestBuild.py

@@ -526,17 +526,11 @@ def runCmpResults(Dir, Strictness=0):
         DiffsPath = os.path.join(NewDir, DiffsSummaryFileName)
         PatchedSourceDirPath = os.path.join(Dir, PatchedSourceDirName)
         Opts = CmpRuns.CmpOptions(DiffsPath, "", PatchedSourceDirPath)
-        # Discard everything coming out of stdout
-        # (CmpRun produces a lot of them).
-        OLD_STDOUT = sys.stdout
-        sys.stdout = SATestUtils.Discarder()
         # Scan the results, delete empty plist files.
         NumDiffs, ReportsInRef, ReportsInNew = \
             CmpRuns.dumpScanBuildResultsDiff(RefDir, NewDir, Opts, False)
-        sys.stdout = OLD_STDOUT
         if (NumDiffs > 0):
-            print "Warning: %r differences in diagnostics. See %s" % \
-                  (NumDiffs, DiffsPath,)
+            print "Warning: %s differences in diagnostics." % NumDiffs
         if Strictness >= 2 and NumDiffs > 0:
             print "Error: Diffs found in strict mode (2)."
             TestsPassed = False

utils/analyzer/SATestUtils.py

@@ -93,14 +93,6 @@ def runScript(ScriptPath, PBuildLogFile, Cwd):
             sys.exit(-1)
 
 
-class Discarder(object):
-    """
-    Auxiliary object to discard stdout.
-    """
-    def write(self, text):
-        pass  # do nothing
-
-
 def isCommentCSVLine(Entries):
     """
     Treat CSV lines starting with a '#' as a comment.