[arm, arm64] Convince the Android toolchain not to bypass memcpy in Read/StoreUnaligned.

runtime/platform/globals.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef RUNTIME_PLATFORM_GLOBALS_H_
 #define RUNTIME_PLATFORM_GLOBALS_H_
 
 // __STDC_FORMAT_MACROS has to be defined before including <inttypes.h> to
 // enable platform independent printf format specifiers.
 #ifndef __STDC_FORMAT_MACROS
@@ skipping 651 matching lines @@
   return destination;
 }
 
 
 #if defined(HOST_ARCH_ARM) || defined(HOST_ARCH_MIPS) ||                       \
     defined(HOST_ARCH_ARM64)
 // Similar to bit_copy and bit_cast, but does take the type from the argument.
 template <typename T>
 static inline T ReadUnaligned(const T* ptr) {
   T value;
-  memcpy(&value, ptr, sizeof(value));
+  memcpy(reinterpret_cast<void*>(&value), reinterpret_cast<const void*>(ptr),
+         sizeof(value));
   return value;
 }
 
 
 // Similar to bit_copy and bit_cast, but does take the type from the argument.
 template <typename T>
 static inline void StoreUnaligned(T* ptr, T value) {
-  memcpy(ptr, &value, sizeof(value));
+  memcpy(reinterpret_cast<void*>(ptr), reinterpret_cast<const void*>(&value),
+         sizeof(value));
 }
 #else   // !(HOST_ARCH_ARM || HOST_ARCH_MIPS || HOST_ARCH_ARM64)
 // Similar to bit_copy and bit_cast, but does take the type from the argument.
 template <typename T>
 static inline T ReadUnaligned(const T* ptr) {
   return *ptr;
 }
 
 
 // Similar to bit_copy and bit_cast, but does take the type from the argument.
@@ skipping 44 matching lines @@
 // tag in the ICData and check it when recreating the flow graph in
 // optimizing compiler. Enable it for other modes (product, release) if needed
 // for debugging.
 #if defined(DEBUG)
 #define TAG_IC_DATA
 #endif
 
 }  // namespace dart
 
 #endif  // RUNTIME_PLATFORM_GLOBALS_H_