diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2012-12-02 13:10:19 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2012-12-02 13:10:19 +0000 |
| commit | 522600a229b950314b5f4af84eba4f3e8a0ffea1 (patch) | |
| tree | 32b4679ab4b8f28e5228daafc65e9dc436935353 /lib/Support/Atomic.cpp | |
| parent | 902a7b529820e6a0aa85f98f21afaeb1805a22f8 (diff) | |
Diffstat (limited to 'lib/Support/Atomic.cpp')
| -rw-r--r-- | lib/Support/Atomic.cpp | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/lib/Support/Atomic.cpp b/lib/Support/Atomic.cpp index 3001f6c468aa..9559ad729570 100644 --- a/lib/Support/Atomic.cpp +++ b/lib/Support/Atomic.cpp @@ -21,11 +21,15 @@ using namespace llvm; #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 @@ sys::cas_flag sys::CompareAndSwap(volatile sys::cas_flag* ptr, 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 @@ sys::cas_flag sys::AtomicIncrement(volatile sys::cas_flag* ptr) { #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 @@ sys::cas_flag sys::AtomicDecrement(volatile sys::cas_flag* ptr) { #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 @@ sys::cas_flag sys::AtomicAdd(volatile sys::cas_flag* ptr, sys::cas_flag val) { #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; |