XFAIL AMD && DirectX in Feature/HLSLLib/dot.int64.test (#581)

- #570

Author: Icohedron

test/Feature/HLSLLib/dot.int64.test

@@ -131,6 +131,9 @@ DescriptorSets:
         Binding: 5
 #--- end
 
+# Bug https://github.com/llvm/offload-test-suite/issues/570
+# XFAIL: AMD && DirectX
+
 # REQUIRES: Int64
 # RUN: split-file %s %t
 # RUN: %dxc_target  -T cs_6_5 -Fo %t.o %t/source.hlsl