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| author | Oscar Fuentes <ofv@wanadoo.es> | 2009-12-05 23:19:33 +0000 |
|---|---|---|
| committer | Oscar Fuentes <ofv@wanadoo.es> | 2009-12-05 23:19:33 +0000 |
| commit | 4f6d1eb3e063d71019a1516548c13c64e024b7da (patch) | |
| tree | e501d11a966208b3c0f5da4d141172683e453a44 /llvm/cmake/modules/CheckAtomic.cmake | |
| parent | 89c038e518f0ea092e4aac66df1eb47470b6dca5 (diff) | |
| download | bcm5719-llvm-4f6d1eb3e063d71019a1516548c13c64e024b7da.tar.gz bcm5719-llvm-4f6d1eb3e063d71019a1516548c13c64e024b7da.zip | |
Fix for atomic intrinsics detection when using MSVC.
Patch by Michael Beck!
llvm-svn: 90683
Diffstat (limited to 'llvm/cmake/modules/CheckAtomic.cmake')
| -rw-r--r-- | llvm/cmake/modules/CheckAtomic.cmake | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/llvm/cmake/modules/CheckAtomic.cmake b/llvm/cmake/modules/CheckAtomic.cmake index 27bbaba6998..6c4da66bfad 100644 --- a/llvm/cmake/modules/CheckAtomic.cmake +++ b/llvm/cmake/modules/CheckAtomic.cmake @@ -1,14 +1,26 @@ # atomic builtins are required for threading support. INCLUDE(CheckCXXSourceCompiles) + +#ifdef _MSC_VER +#include <windows.h> +#endif CHECK_CXX_SOURCE_COMPILES(" int main() { +#ifdef _MSC_VER + volatile LONG val = 1; + MemoryBarrier(); + InterlockedCompareExchange(&val, 0, 1); + InterlockedIncrement(&val); + InterlockedDecrement(&val); +#else volatile unsigned long val = 1; __sync_synchronize(); __sync_val_compare_and_swap(&val, 1, 0); __sync_add_and_fetch(&val, 1); __sync_sub_and_fetch(&val, 1); +#endif return 0; } " LLVM_MULTITHREADED) |
