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Unbreak mingw build

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llvm-svn: 71856
This commit is contained in:
Anton Korobeynikov 2009-05-15 11:04:52 +00:00
parent 1f8d845588
commit 0df5f515ff
1 changed files with 17 additions and 10 deletions
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27
include/llvm/System/Atomic.h
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@ -27,12 +27,12 @@
namespace llvm {
namespace sys {
#if !defined(ENABLE_THREADS) || ENABLE_THREADS == 0
inline void MemoryFence() {
return;
}
typedef uint32_t cas_flag;
inline cas_flag CompareAndSwap(cas_flag* dest, cas_flag exc, cas_flag c) {
cas_flag result = *dest;
@ -40,22 +40,22 @@ namespace llvm {
*dest = exc;
return result;
}
#elif __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)
inline void MemoryFence() {
__sync_synchronize();
}
typedef volatile uint32_t cas_flag;
inline cas_flag CompareAndSwap(cas_flag* dest, cas_flag exc, cas_flag c) {
return __sync_val_compare_and_swap(dest, exc, c);
}
#elif defined(__APPLE__)
inline void MemoryFence() {
OSMemoryBarrier();
}
typedef volatile int32_t cas_flag;
inline cas_flag CompareAndSwap(cas_flag* dest, cas_flag exc, cas_flag c) {
cas_flag old = *dest;
@ -63,11 +63,18 @@ namespace llvm {
return old;
}
#elif defined(LLVM_ON_WIN32)
#warning Memory fence implementation requires Windows 2003 or later.
inline void MemoryFence() {
#ifdef _MSC_VER
MemoryBarrier();
#elif 0
// FIXME: Requires SSE2 support
__asm__ __volatile__("mfence":::"memory");
#else
// FIXME: just temporary workaround. We need to emit some fence...
__asm__ __volatile__("":::"memory");
#endif
}
typedef volatile long cas_flag;
inline cas_flag CompareAndSwap(cas_flag* dest, cas_flag exc, cas_flag c) {
return InterlockedCompareExchange(dest, exc, c);
@ -75,8 +82,8 @@ namespace llvm {
#else
#error No memory atomics implementation for your platform!
#endif
}
}
#endif
#endif