Add an atomic increment and decrement implementation, which will be used for

thread-safe reference counting.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73587 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 0 deletions

diff --git a/include/llvm/System/Atomic.h b/include/llvm/System/Atomic.h
index cb9277cc35..f90a8f62e1 100644
--- a/include/llvm/System/Atomic.h
+++ b/include/llvm/System/Atomic.h
@@ -24,6 +24,8 @@ namespace llvm {
     cas_flag CompareAndSwap(volatile cas_flag* ptr,
                             cas_flag new_value,
                             cas_flag old_value);
+    cas_flag AtomicPostIncrement(volatile cas_flag* ptr);
+    cas_flag AtomicPostDecrement(volatile cas_flag* ptr);
   }
 }