arm64: Implement Unsafe GetAndSet/-Add intrinsics.

Test: testrunner.py --target --64 --optimizing
Bug: 26264765
Bug: 202868177
Change-Id: I9836a2eeee160e6c520e98ccb8af6f66b76bf00a

1 files changed, 10 insertions, 0 deletions

diff --git a/compiler/optimizing/intrinsics_utils.h b/compiler/optimizing/intrinsics_utils.h
index 380011e608..590bc34ee9 100644
--- a/compiler/optimizing/intrinsics_utils.h
+++ b/compiler/optimizing/intrinsics_utils.h
@@ -177,6 +177,16 @@ static inline bool IsUnsafeCASReference(HInvoke* invoke) {
   }
 }
 
+static inline bool IsUnsafeGetAndSetReference(HInvoke* invoke) {
+  switch (invoke->GetIntrinsic()) {
+    case Intrinsics::kUnsafeGetAndSetObject:
+    case Intrinsics::kJdkUnsafeGetAndSetReference:
+      return true;
+    default:
+      return false;
+  }
+}
+
 static inline bool IsVarHandleCASFamily(HInvoke* invoke) {
   mirror::VarHandle::AccessModeTemplate access_mode =
       mirror::VarHandle::GetAccessModeTemplateByIntrinsic(invoke->GetIntrinsic());