Cleanup and simplify

test/lit.cfg

@@ -10,8 +10,6 @@ import subprocess
 import lit.util
 import lit.formats
 
-from lit.llvm import llvm_config
-
 # name: The name of this test suite.
 config.name = 'clad'
 # Tweak PATH for Win32
@@ -326,30 +324,20 @@ if libcudart_path is not None:
 if(config.have_enzyme):
     config.available_features.add('Enzyme')
 
-# Ask llvm-config about assertion mode.
+# Ask llvm-config about assertion mode and build-mode.
 try:
     llvm_config_cmd = subprocess.Popen(
-        [os.path.join(llvm_tools_dir, 'llvm-config'), '--assertion-mode'],
+        [os.path.join(llvm_tools_dir, 'llvm-config'), '--assertion-mode --build-mode'],
         stdout = subprocess.PIPE,
         env=config.environment)
 except OSError:
     print("Could not find llvm-config in " + llvm_tools_dir)
     exit(42)
 
-if re.search(r'ON', llvm_config_cmd.stdout.read().decode('ascii')):
+res=llvm_config_cmd.stdout.read().decode('ascii')
+if re.search(r'ON', res):
     config.available_features.add('asserts')
-llvm_config_cmd.wait()
-
-# Ask llvm-config about build-mode.
-try:
-    llvm_config_cmd = subprocess.Popen(
-        [os.path.join(llvm_tools_dir, 'llvm-config'), '--build-mode'],
-        stdout = subprocess.PIPE,
-        env=config.environment)
-except OSError:
-    print("Could not find llvm-config in " + llvm_tools_dir)
-    exit(42)
-
-if re.search(r'[Dd][Ee][Bb][Uu][Gg]', llvm_config_cmd.stdout.read().decode('ascii')):
+if re.search(r'[Dd][Ee][Bb][Uu][Gg]', res):
     config.available_features.add('debug')
+
 llvm_config_cmd.wait()