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Unbreak mingw build

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71856 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov
2009-05-15 11:04:52 +00:00
parent 2c34f320ea
commit b2e82d07a7
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 llvm {
namespace sys { namespace sys {
#if !defined(ENABLE_THREADS) || ENABLE_THREADS == 0 #if !defined(ENABLE_THREADS) || ENABLE_THREADS == 0
inline void MemoryFence() { inline void MemoryFence() {
return; return;
} }
typedef uint32_t cas_flag; typedef uint32_t cas_flag;
inline cas_flag CompareAndSwap(cas_flag* dest, cas_flag exc, cas_flag c) { inline cas_flag CompareAndSwap(cas_flag* dest, cas_flag exc, cas_flag c) {
cas_flag result = *dest; cas_flag result = *dest;
@@ -40,22 +40,22 @@ namespace llvm {
*dest = exc; *dest = exc;
return result; return result;
} }
#elif __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1) #elif __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)
inline void MemoryFence() { inline void MemoryFence() {
__sync_synchronize(); __sync_synchronize();
} }
typedef volatile uint32_t cas_flag; typedef volatile uint32_t cas_flag;
inline cas_flag CompareAndSwap(cas_flag* dest, cas_flag exc, cas_flag c) { inline cas_flag CompareAndSwap(cas_flag* dest, cas_flag exc, cas_flag c) {
return __sync_val_compare_and_swap(dest, exc, c); return __sync_val_compare_and_swap(dest, exc, c);
} }
#elif defined(__APPLE__) #elif defined(__APPLE__)
inline void MemoryFence() { inline void MemoryFence() {
OSMemoryBarrier(); OSMemoryBarrier();
} }
typedef volatile int32_t cas_flag; typedef volatile int32_t cas_flag;
inline cas_flag CompareAndSwap(cas_flag* dest, cas_flag exc, cas_flag c) { inline cas_flag CompareAndSwap(cas_flag* dest, cas_flag exc, cas_flag c) {
cas_flag old = *dest; cas_flag old = *dest;
@@ -63,11 +63,18 @@ namespace llvm {
return old; return old;
} }
#elif defined(LLVM_ON_WIN32) #elif defined(LLVM_ON_WIN32)
#warning Memory fence implementation requires Windows 2003 or later.
inline void MemoryFence() { inline void MemoryFence() {
#ifdef _MSC_VER
MemoryBarrier(); 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; typedef volatile long cas_flag;
inline cas_flag CompareAndSwap(cas_flag* dest, cas_flag exc, cas_flag c) { inline cas_flag CompareAndSwap(cas_flag* dest, cas_flag exc, cas_flag c) {
return InterlockedCompareExchange(dest, exc, c); return InterlockedCompareExchange(dest, exc, c);
@@ -75,8 +82,8 @@ namespace llvm {
#else #else
#error No memory atomics implementation for your platform! #error No memory atomics implementation for your platform!
#endif #endif
} }
} }
#endif #endif