+// RUN: not llvm-mc -triple aarch64-none-linux-gnu -mattr=+v8.1a -show-encoding < %s 2> %t | FileCheck %s
+// RUN: FileCheck --check-prefix=CHECK-ERROR %s < %t
+
+ .text
+
+ msr pan, #0
+// CHECK: msr PAN, #0 // encoding: [0x9f,0x40,0x00,0xd5]
+ msr pan, #1
+// CHECK: msr PAN, #1 // encoding: [0x9f,0x41,0x00,0xd5]
+ msr pan, x5
+// CHECK: msr PAN, x5 // encoding: [0x65,0x42,0x18,0xd5]
+ mrs x13, pan
+// CHECK: mrs x13, PAN // encoding: [0x6d,0x42,0x38,0xd5]
+
+ msr pan, #-1
+ msr pan, #20
+ msr pan, w0
+ mrs w0, pan
+// CHECK-ERROR: error: immediate must be an integer in range [0, 15].
+// CHECK-ERROR: msr pan, #-1
+// CHECK-ERROR: ^
+// CHECK-ERROR: error: immediate must be an integer in range [0, 15].
+// CHECK-ERROR: msr pan, #20
+// CHECK-ERROR: ^
+// CHECK-ERROR: error: immediate must be an integer in range [0, 15].
+// CHECK-ERROR: msr pan, w0
+// CHECK-ERROR: ^
+// CHECK-ERROR: error: invalid operand for instruction
+// CHECK-ERROR: mrs w0, pan
+// CHECK-ERROR: ^