if use_gmalloc:
config.environment.update({'DYLD_INSERT_LIBRARIES' : gmalloc_path_str})
+
+# Ask llvm-config about global-isel.
+try:
+ llvm_config_cmd = subprocess.Popen(
+ [os.path.join(llvm_tools_dir, 'llvm-config'), '--has-global-isel'],
+ 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')):
+ config.available_features.add('global-isel')
+llvm_config_cmd.wait()