+
+define void @atomic_store(i64* %mem, i64 %val) nounwind {
+entry:
+; CHECK: @atomic_store
+ store atomic i64 %val, i64* %mem release, align 64
+; CHECK: ldarx
+; CHECK: stdcx.
+ ret void
+}
+
+define i64 @atomic_load(i64* %mem) nounwind {
+entry:
+; CHECK: @atomic_load
+ %tmp = load atomic i64* %mem acquire, align 64
+; CHECK: ldarx
+; CHECK: stdcx.
+; CHECK: stdcx.
+ ret i64 %tmp
+}
+