third_party/protobuf: Update to HEAD (f52e188fe4)

third_party/protobuf/src/google/protobuf/stubs/atomicops_internals_ppc_gcc.h

 // Protocol Buffers - Google's data interchange format
 // Copyright 2015 Google Inc.  All rights reserved.
 // https://developers.google.com/protocol-buffers/
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
@@ skipping 79 matching lines @@
       "bne- 0b                             \n\t"
       : [temp] "=&r"(temp)
       : [increment] "r"(increment), [ptr] "r"(ptr)
       : "cc", "memory");
 
   return temp;
 }
 
 inline Atomic32 Barrier_AtomicIncrement(volatile Atomic32 *ptr,
                                         Atomic32 increment) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   Atomic32 res = NoBarrier_AtomicIncrement(ptr, increment);
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return res;
 }
 
 inline Atomic32 Acquire_CompareAndSwap(volatile Atomic32 *ptr,
                                        Atomic32 old_value, Atomic32 new_value) {
   Atomic32 res = NoBarrier_CompareAndSwap(ptr, old_value, new_value);
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return res;
 }
 
 inline Atomic32 Release_CompareAndSwap(volatile Atomic32 *ptr,
                                        Atomic32 old_value, Atomic32 new_value) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   Atomic32 res = NoBarrier_CompareAndSwap(ptr, old_value, new_value);
   return res;
 }
 
 inline void NoBarrier_Store(volatile Atomic32 *ptr, Atomic32 value) {
   *ptr = value;
 }
 
-inline void MemoryBarrier() { __asm__ __volatile__("sync" : : : "memory"); }
+inline void MemoryBarrierInternal() { __asm__ __volatile__("sync" : : : "memory"); }
 
 inline void Acquire_Store(volatile Atomic32 *ptr, Atomic32 value) {
   *ptr = value;
-  MemoryBarrier();
+  MemoryBarrierInternal();
 }
 
 inline void Release_Store(volatile Atomic32 *ptr, Atomic32 value) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   *ptr = value;
 }
 
 inline Atomic32 NoBarrier_Load(volatile const Atomic32 *ptr) { return *ptr; }
 
 inline Atomic32 Acquire_Load(volatile const Atomic32 *ptr) {
   Atomic32 value = *ptr;
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return value;
 }
 
 inline Atomic32 Release_Load(volatile const Atomic32 *ptr) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return *ptr;
 }
 
 }  // namespace internal
 }  // namespace protobuf
 }  // namespace google
 
 #undef ATOMICOPS_COMPILER_BARRIER
 
 #endif  // GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_PPC_GCC_H_