--- libmalloc/libmalloc-715.140.5/tests/add_xzone_tests.py
+++ /dev/null
@@ -1,160 +0,0 @@
-#!/usr/bin/env python3
-
-import argparse
-import copy
-import plistlib
-from os.path import exists
-
-def create_xzone_test(test, nano_on_xzone=False, force_pgm=False):
-    xzone_test = copy.deepcopy(test)
-
-    extension = 'nano-on-xzone' if nano_on_xzone else 'xzone'
-    if force_pgm:
-        extension += '.pgm'
-
-    if 'TestName' in xzone_test:
-        orig_name = xzone_test['TestName']
-        xzone_test['TestName'] = orig_name + '.' + extension
-
-    if 'CanonicalName' in xzone_test:
-        # The CanonicalName for darwintests has a .<arch> suffix that we
-        # want to keep at the end, so insert our new component just
-        # before that
-        orig_name = xzone_test['CanonicalName']
-        components = orig_name.split('.')
-        if len(components) > 1:
-            components.insert(-1, extension)
-            new_name = '.'.join(components)
-        else:
-            new_name = orig_name + '.' + extension
-
-        xzone_test['CanonicalName'] = new_name
-
-    envvars = [
-        'MallocAllowInternalSecurity=1',
-        'MallocSecureAllocator=1',
-    ]
-
-    if nano_on_xzone:
-        envvars.append('MallocSecureAllocatorNano=0')
-        envvars.append('MallocNanoOnXzone=1')
-    else:
-        envvars.append('MallocSecureAllocatorNano=1')
-
-    if force_pgm:
-        # If we're forcing PGM, it should already be disabled in the test
-        # we're starting with
-        assert('MallocProbGuard=0' in xzone_test['ShellEnv'])
-        xzone_test['ShellEnv'].remove('MallocProbGuard=0')
-        envvars.append('MallocProbGuard=1')
-
-    if 'perf' not in xzone_test['Tags'] and \
-            'no_debug' not in xzone_test['Tags'] and \
-            not nano_on_xzone:
-        # This isn't a performance test or otherwise incompatible with
-        # the debug variant of the library, so we can use it for extra
-        # assert coverage.
-        envvars.append('DYLD_IMAGE_SUFFIX=_debug')
-
-    extend_env(xzone_test, envvars)
-
-    # xzone tests aren't eligible for VM testing because
-    # VMs report a single CPU cluster, which xzone malloc
-    # doesn't support
-    new_tags = []
-    for tag in test["Tags"]:
-        if tag == 'VM_PREFERRED':
-            new_tags.append("VM_NOT_PREFERRED")
-        else:
-            new_tags.append(tag)
-
-    xzone_test["Tags"] = new_tags
-
-    return xzone_test
-
-def add_xzone_tests(bats_plist_path, disable_xzone):
-    with open(bats_plist_path, 'rb') as bats_plist_file:
-        orig_bats_plist = plistlib.load(bats_plist_file)
-
-    # Copy all the top-level keys as-is except for the Tests list
-    new_bats_plist = { k: v for k, v in orig_bats_plist.items() if k != 'Tests' }
-
-    tests = []
-    for test in orig_bats_plist['Tests']:
-        disable_pgm(test)
-        # Keep the original test, unless it's xzone-only
-        if 'Tags' not in test or 'xzone_only' not in test['Tags']:
-            test_copy = copy.deepcopy(test)
-
-            if 'Tags' not in test or 'no_allocator_override' not in test['Tags']:
-                # Explicitly disable xzone malloc, so that the old allocator is
-                # still tested on platforms that have xzone malloc by default
-                envvars = [
-                    'MallocAllowInternalSecurity=1',
-                    'MallocSecureAllocator=0',
-                ]
-                extend_env(test_copy, envvars)
-
-            tests.append(test_copy)
-
-        if 'Tags' in test and not disable_xzone:
-            if 'xzone' in test['Tags'] or 'xzone_only' in test['Tags']:
-                # This test has been tagged to run with xzone malloc
-                xzone_test = create_xzone_test(test)
-                tests.append(xzone_test)
-
-                if 'xzone_and_pgm' in test['Tags']:
-                    xzone_and_pgm_test = create_xzone_test(test,
-                            nano_on_xzone=False, force_pgm=True)
-                    tests.append(xzone_and_pgm_test)
-
-            if 'nano_on_xzone' in test['Tags']:
-                nano_on_xzone_test = create_xzone_test(test, nano_on_xzone=True)
-                tests.append(nano_on_xzone_test)
-
-                if 'xzone_and_pgm' in test['Tags']:
-                    pgm_on_nano_on_xzone_test = create_xzone_test(test,
-                            nano_on_xzone=True, force_pgm=True)
-                    tests.append(pgm_on_nano_on_xzone_test)
-
-    new_bats_plist['Tests'] = tests
-
-    with open(bats_plist_path, 'wb') as bats_plist_file:
-        plistlib.dump(new_bats_plist, bats_plist_file, fmt=plistlib.FMT_BINARY)
-
-
-# Note: The env is a list of `key=value`, not a dictionary
-def has_env_var(test, env_var_name):
-    env = test.get('ShellEnv', [])
-    key = env_var_name + '='  # exact match required
-    return any(v.startswith(key) for v in env)
-
-
-def extend_env(test, env_vars):
-    if 'ShellEnv' in test:
-        test['ShellEnv'].extend(env_vars)
-    else:
-        test['ShellEnv'] = env_vars
-
-
-# Disable PGM by setting `MallocProbGuard=0`, but respect existing uses
-def disable_pgm(test):
-    if not has_env_var(test, 'MallocProbGuard'):
-        extend_env(test, ['MallocProbGuard=0'])
-
-
-if __name__ == '__main__':
-    parser = argparse.ArgumentParser(description='Adds xzone malloc tests to BATS plist')
-    parser.add_argument('bats_plist')
-    parser.add_argument('-p', '--platform', help='Platform tests are being run on ()')
-    args = parser.parse_args()
-
-    assert exists(args.bats_plist), 'Expected bats plist as argument'
-
-    disable_xzone_tests = False
-    if args.platform == 'WatchOS':
-        # MallocSecureAllocator=1 is a no-op on arm64_32 (read: all watches),
-        # so don't generate .xzone test variants on watchOS
-        disable_xzone_tests = True
-
-    add_xzone_tests(args.bats_plist, disable_xzone_tests)