[analyzer] Use stable filenames in analyzer testing infrastructure

Makes finding the right file in test results easier.

Differential Revision: https://reviews.llvm.org/D42445

llvm-svn: 323697

clang/utils/analyzer/SATestBuild.py

@@ -247,6 +247,7 @@ def runScanBuild(Dir, SBOutputDir, PBuildLogFile):
     SBOptions += "-plist-html -o '%s' " % SBOutputDir
     SBOptions += "-enable-checker " + AllCheckers + " "
     SBOptions += "--keep-empty "
+    SBOptions += "-analyzer-config 'stable-report-filename=true' "
     # Always use ccc-analyze to ensure that we can locate the failures
     # directory.
     SBOptions += "--override-compiler "