Apple devices do not support CRC32 instructions. Don't believe Clang's lies.

include/core/SkPreConfig.h

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 // IWYU pragma: private, include "SkTypes.h"
 
 #ifndef SkPreConfig_DEFINED
@@ skipping 175 matching lines @@
 
 #if defined(__aarch64__) && !defined(SK_BUILD_NO_OPTS)
     #define SK_CPU_ARM64
 #endif
 
 // All 64-bit ARM chips have NEON.  Many 32-bit ARM chips do too.
 #if !defined(SK_ARM_HAS_NEON) && !defined(SK_BUILD_NO_OPTS) && (defined(__ARM_NEON__) || defined(__ARM_NEON))
     #define SK_ARM_HAS_NEON
 #endif
 
+// Really this __APPLE__ check shouldn't be necessary, but it seems that Apple's Clang defines
+// __ARM_FEATURE_CRC32 for -arch arm64, even though their chips don't support those instructions!
+#if defined(__ARM_FEATURE_CRC32) && !defined(__APPLE__)
+    #define SK_ARM_HAS_CRC32
+#endif
+
 //////////////////////////////////////////////////////////////////////
 
 #if !defined(SKIA_IMPLEMENTATION)
     #define SKIA_IMPLEMENTATION 0
 #endif
 
 #if !defined(SK_API)
     #if defined(SKIA_DLL)
         #if defined(_MSC_VER)
             #if SKIA_IMPLEMENTATION
@@ skipping 47 matching lines @@
  *
  * NOTE: Clang/ARM (r161757) does not support the 'optimize' attribute.
  */
 #if SK_HAS_ATTRIBUTE(optimize)
 #   define SK_ATTRIBUTE_OPTIMIZE_O1 __attribute__((optimize("O1")))
 #else
 #   define SK_ATTRIBUTE_OPTIMIZE_O1 /* nothing */
 #endif
 
 #endif