# RUN: llvm-mc --disassemble %s -triple=thumbv7-apple-darwin9 2>&1 | grep "invalid instruction encoding"
# XFAIL: *

# Opcode=2127 Name=t2STREXB Format=ARM_FORMAT_THUMBFRM(25)
#  31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10  9  8  7  6  5  4  3  2  1  0 
# -------------------------------------------------------------------------------------------------
# | 1: 1: 1: 0| 1: 0: 0: 0| 1: 1: 0: 0| 0: 0: 1: 0| 1: 0: 0: 0| 1: 1: 1: 1| 0: 1: 0: 0| 0: 0: 1: 0|
# -------------------------------------------------------------------------------------------------
# 
# if d == n || d == t then UNPREDICTABLE
0xc2 0xe8 0x42 0x8f