--- /dev/null
+++ dyld/dyld-1330/common/MurmurHash.cpp
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2022 Apple Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+/*
+ Portions derived from:
+ 
+ ------------------------------------------------------------------------------
+ // MurmurHash2 was written by Austin Appleby, and is placed in the public
+ // domain. The author hereby disclaims copyright to this source code.
+ Source is https://github.com/aappleby/smhasher/blob/master/src/MurmurHash2.cpp
+------------------------------------------------------------------------------
+*/
+
+#include "MurmurHash.h"
+
+uint64_t murmurHash(const void* key, int len, uint64_t seed)
+{
+  const uint64_t magic = 0xc6a4a7935bd1e995ULL;
+  const int salt = 47;
+
+  uint64_t hash = seed ^ (len * magic);
+
+  const uint64_t * data = (const uint64_t *)key;
+  const uint64_t * end = data + (len/8);
+
+  while(data != end)
+  {
+    uint64_t val = *data++;
+
+    val *= magic;
+    val ^= val >> salt;
+    val *= magic;
+
+    hash ^= val;
+    hash *= magic;
+  }
+
+  const unsigned char * data2 = (const unsigned char*)data;
+
+  switch(len & 7)
+  {
+      case 7: hash ^= uint64_t(data2[6]) << 48; [[fallthrough]];
+      case 6: hash ^= uint64_t(data2[5]) << 40; [[fallthrough]];
+      case 5: hash ^= uint64_t(data2[4]) << 32; [[fallthrough]];
+      case 4: hash ^= uint64_t(data2[3]) << 24; [[fallthrough]];
+      case 3: hash ^= uint64_t(data2[2]) << 16; [[fallthrough]];
+      case 2: hash ^= uint64_t(data2[1]) << 8; [[fallthrough]];
+      case 1: hash ^= uint64_t(data2[0]);
+  };
+    hash *= magic;
+
+    hash ^= hash >> salt;
+    hash *= magic;
+    hash ^= hash >> salt;
+
+  return hash;
+}