test/lit.cfg: Enhance getRegisteredTargets() to retrieve +Asserts.

- s/getRegisteredTargets/get_llc_props/g
  - get_llc_props() returns dict {"set_of_targets", "enable_assertions"}
  - Enable the feature "asserts".
    test/Driver/darwin-verify-debug.c had expected it.

llvm-svn: 145231

clang/test/lit.cfg

@@ -194,8 +194,9 @@ if platform.system() not in ['Windows'] or lit.getBashPath() != '':
     config.available_features.add('shell')
 
 # Registered Targets
-def getRegisteredTargets(tool):
+def get_llc_props(tool):
     set_of_targets = set()
+    enable_assertions = False
 
     cmd = subprocess.Popen([tool, '-version'], stdout=subprocess.PIPE)
 
@@ -211,10 +212,17 @@ def getRegisteredTargets(tool):
         elif "Registered Targets:" in line:
             parse_targets = True
 
-    return set_of_targets
+        if re.search(r'with assertions', line):
+            enable_assertions = True
 
-registered_targets = getRegisteredTargets(os.path.join(llvm_tools_dir, 'llc'))
-if len(registered_targets) > 0:
-    config.available_features.update(registered_targets)
+    return {"set_of_targets":    set_of_targets,
+            "enable_assertions": enable_assertions}
+
+llc_props = get_llc_props(os.path.join(llvm_tools_dir, 'llc'))
+if len(llc_props['set_of_targets']) > 0:
+    config.available_features.update(llc_props['set_of_targets'])
 else:
     lit.fatal('No Targets Registered with the LLVM Tools!')
+
+if llc_props['enable_assertions']:
+    config.available_features.add('asserts')