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      1 @ RUN: not llvm-mc -triple=thumbv7m 2>&1 < %s | FileCheck --check-prefix=CHECK-ERRORS %s
      2 @ RUN: llvm-mc -triple=thumbv7em -show-encoding < %s | FileCheck --check-prefix=CHECK-7EM %s
      3 
      4 sxtab r0, r0, r0
      5 sxtah r0, r0, r0
      6 sxtab16 r0, r0, r0
      7 sxtb16 r0, r0
      8 sxtb16 r0, r0, ror #8
      9 @ CHECK-ERRORS: error: instruction requires: arm-mode
     10 @ CHECK-ERRORS: error: instruction requires: arm-mode
     11 @ CHECK-ERRORS: error: instruction requires: arm-mode
     12 @ CHECK-ERRORS: error: instruction requires: arm-mode
     13 @ CHECK-ERRORS: error: invalid operand for instruction
     14 @ CHECK-7EM: sxtab	r0, r0, r0              @ encoding: [0x40,0xfa,0x80,0xf0]
     15 @ CHECK-7EM: sxtah	r0, r0, r0              @ encoding: [0x00,0xfa,0x80,0xf0]
     16 @ CHECK-7EM: sxtab16	r0, r0, r0              @ encoding: [0x20,0xfa,0x80,0xf0]
     17 @ CHECK-7EM: sxtb16	r0, r0                  @ encoding: [0x2f,0xfa,0x80,0xf0]
     18 @ CHECK-7EM: sxtb16	r0, r0, ror #8          @ encoding: [0x2f,0xfa,0x90,0xf0]
     19 
     20 uxtab r0, r0, r0
     21 uxtah r0, r0, r0
     22 uxtab16 r0, r0, r0
     23 uxtb16 r0, r0
     24 uxtb16 r0, r0, ror #8
     25 @ CHECK-ERRORS: error: instruction requires: arm-mode
     26 @ CHECK-ERRORS: error: instruction requires: arm-mode
     27 @ CHECK-ERRORS: error: instruction requires: arm-mode
     28 @ CHECK-ERRORS: error: instruction requires: arm-mode
     29 @ CHECK-ERRORS: error: invalid operand for instruction
     30 @ CHECK-7EM: uxtab	r0, r0, r0              @ encoding: [0x50,0xfa,0x80,0xf0]
     31 @ CHECK-7EM: uxtah	r0, r0, r0              @ encoding: [0x10,0xfa,0x80,0xf0]
     32 @ CHECK-7EM: uxtab16	r0, r0, r0              @ encoding: [0x30,0xfa,0x80,0xf0]
     33 @ CHECK-7EM: uxtb16	r0, r0                  @ encoding: [0x3f,0xfa,0x80,0xf0]
     34 @ CHECK-7EM: uxtb16	r0, r0, ror #8          @ encoding: [0x3f,0xfa,0x90,0xf0]
     35