[analyzer] SATestBuild.py: Use driver for analyzing single-file tests.

Don't bother coming up with a -cc1 run-line ourselves.

This, in particular, gets rid of a macOS-specific code path.

llvm-svn: 362009
diff --git a/clang/utils/analyzer/SATestBuild.py b/clang/utils/analyzer/SATestBuild.py
index 1c96cd8..691ded8 100755
--- a/clang/utils/analyzer/SATestBuild.py
+++ b/clang/utils/analyzer/SATestBuild.py
@@ -343,18 +343,13 @@
                 BuildScript))
         raise Exception()
 
-    CmdPrefix = Clang + " -cc1 "
+    CmdPrefix = Clang + " --analyze "
 
-    # For now, we assume the preprocessed files should be analyzed
-    # with the OS X SDK.
-    SDKPath = SATestUtils.getSDKPath("macosx")
-    if SDKPath is not None:
-        CmdPrefix += "-isysroot " + SDKPath + " "
-
-    CmdPrefix += "-analyze -analyzer-output=plist -w "
-    CmdPrefix += "-analyzer-checker=" + Checkers
+    CmdPrefix += "--analyzer-output plist "
+    CmdPrefix += " -Xclang -analyzer-checker=" + Checkers
     CmdPrefix += " -fcxx-exceptions -fblocks "
-    CmdPrefix += " -analyzer-config %s " % generateAnalyzerConfig(Args)
+    CmdPrefix += " -Xclang -analyzer-config -Xclang %s "\
+        % generateAnalyzerConfig(Args)
 
     if (Mode == 2):
         CmdPrefix += "-std=c++11 "