diff options
| 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 | 87e98075cc69580c199d8455e4581ce32697eb25 (patch) | |
| tree | 1af8d76274e58e35db998732cd094394303d9377 /cmake/modules | |
| parent | 87bad707ed0fa98a986dc4621648f96da607e81b (diff) | |
| download | llvm-87e98075cc69580c199d8455e4581ce32697eb25.tar.gz llvm-87e98075cc69580c199d8455e4581ce32697eb25.tar.bz2 llvm-87e98075cc69580c199d8455e4581ce32697eb25.tar.xz | |
Fix for atomic intrinsics detection when using MSVC.
Patch by Michael Beck!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90683 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'cmake/modules')
| -rw-r--r-- | cmake/modules/CheckAtomic.cmake | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/cmake/modules/CheckAtomic.cmake b/cmake/modules/CheckAtomic.cmake index 27bbaba699..6c4da66bfa 100644 --- a/cmake/modules/CheckAtomic.cmake +++ b/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) |