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Added LLVM as a submodule

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S Gopal Rajagopal 2014-09-15 20:00:34 +05:30
parent 6135b450c2
commit 02d1c9f6d2
661 changed files with 43575 additions and 17 deletions
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29
llvm_build/share/llvm/cmake/CheckAtomic.cmake Normal file
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@ -0,0 +1,29 @@
# atomic builtins are required for threading support.
INCLUDE(CheckCXXSourceCompiles)
CHECK_CXX_SOURCE_COMPILES("
#ifdef _MSC_VER
#include <windows.h>
#endif
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_HAS_ATOMICS)
if( NOT LLVM_HAS_ATOMICS )
message(STATUS "Warning: LLVM will be built thread-unsafe because atomic builtins are missing")
endif()