[llvm-commits] [llvm] r167309 - /llvm/trunk/lib/Support/Atomic.cpp

[Rafael Espindola]

Author: rafael
Date: Fri Nov  2 15:54:45 2012
New Revision: 167309

URL: http://llvm.org/viewvc/llvm-project?rev=167309&view=rev
Log:
XLC supports the same atomic functions as GCC, use them.
Patch by Kai.

Modified:
    llvm/trunk/lib/Support/Atomic.cpp

Modified: llvm/trunk/lib/Support/Atomic.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Support/Atomic.cpp?rev=167309&r1=167308&r2=167309&view=diff
==============================================================================
--- llvm/trunk/lib/Support/Atomic.cpp (original)
+++ llvm/trunk/lib/Support/Atomic.cpp Fri Nov  2 15:54:45 2012
@@ -21,11 +21,15 @@
 #undef MemoryFence
 #endif
 
+#if defined(__GNUC__) || (defined(__IBMCPP__) && __IBMCPP__ >= 1210)
+#define GNU_ATOMICS
+#endif
+
 void sys::MemoryFence() {
 #if LLVM_HAS_ATOMICS == 0
   return;
 #else
-#  if defined(__GNUC__)
+#  if defined(GNU_ATOMICS)
   __sync_synchronize();
 #  elif defined(_MSC_VER)
   MemoryBarrier();
@@ -43,7 +47,7 @@
   if (result == old_value)
     *ptr = new_value;
   return result;
-#elif defined(__GNUC__)
+#elif defined(GNU_ATOMICS)
   return __sync_val_compare_and_swap(ptr, old_value, new_value);
 #elif defined(_MSC_VER)
   return InterlockedCompareExchange(ptr, new_value, old_value);
@@ -56,7 +60,7 @@
 #if LLVM_HAS_ATOMICS == 0
   ++(*ptr);
   return *ptr;
-#elif defined(__GNUC__)
+#elif defined(GNU_ATOMICS)
   return __sync_add_and_fetch(ptr, 1);
 #elif defined(_MSC_VER)
   return InterlockedIncrement(ptr);
@@ -69,7 +73,7 @@
 #if LLVM_HAS_ATOMICS == 0
   --(*ptr);
   return *ptr;
-#elif defined(__GNUC__)
+#elif defined(GNU_ATOMICS)
   return __sync_sub_and_fetch(ptr, 1);
 #elif defined(_MSC_VER)
   return InterlockedDecrement(ptr);
@@ -82,7 +86,7 @@
 #if LLVM_HAS_ATOMICS == 0
   *ptr += val;
   return *ptr;
-#elif defined(__GNUC__)
+#elif defined(GNU_ATOMICS)
   return __sync_add_and_fetch(ptr, val);
 #elif defined(_MSC_VER)
   return InterlockedExchangeAdd(ptr, val) + val;