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diff --git a/test/MC/AArch64/SVE/uqdecp-diagnostics.s b/test/MC/AArch64/SVE/uqdecp-diagnostics.s
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+// RUN: not llvm-mc -triple=aarch64-none-linux-gnu -show-encoding -mattr=+sve 2>&1 < %s | FileCheck %s
+
+
+// --------------------------------------------------------------------------//
+// Negative tests for instructions that are incompatible with movprfx
+
+movprfx z0.d, p0/z, z7.d
+uqdecp z0.d, p0
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: instruction is unpredictable when following a predicated movprfx, suggest using unpredicated movprfx
+// CHECK-NEXT: uqdecp z0.d, p0
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}: