diff --git a/test/tint/builtins/gen/literal/quadSwapDiagonal/856536.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/literal/quadSwapDiagonal/856536.wgsl.expected.dxc.hlsl
new file mode 100644
index 0000000..5153112
--- /dev/null
+++ b/test/tint/builtins/gen/literal/quadSwapDiagonal/856536.wgsl.expected.dxc.hlsl
@@ -0,0 +1,17 @@
+RWByteAddressBuffer prevent_dce : register(u0);
+
+uint3 quadSwapDiagonal_856536() {
+  uint3 res = QuadReadAcrossDiagonal((1u).xxx);
+  return res;
+}
+
+void fragment_main() {
+  prevent_dce.Store3(0u, asuint(quadSwapDiagonal_856536()));
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  prevent_dce.Store3(0u, asuint(quadSwapDiagonal_856536()));
+  return;
+}