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# RUN: llvm-mc -disassemble -triple thumbv7 2>&1 | FileCheck %s
# XFAIL: *
#------------------------------------------------------------------------------
# Undefined encodings for ldrexd/strexd
#------------------------------------------------------------------------------
# FIXME: "ldrexd r8, r8, [r2]"
# Rt == Rt2 is UNPREDICTABLE
[0xd2 0xe8 0x7f 0x88]
# CHECK: potentially undefined instruction encoding
# CHECK-NEXT: [0xd2 0xe8 0x7f 0x88]
# 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]
# CHECK: potentially undefined instruction encoding
# CHECK-NEXT: [0xc2 0xe8 0x42 0x8f]
# Opcode=2128 Name=t2STREXD 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| 0: 1: 1: 1| 1: 0: 0: 0| 0: 1: 1: 1| 1: 0: 0: 0|
# -------------------------------------------------------------------------------------------------
#
# if d == n || d == t || d == t2 then UNPREDICTABLE
# FIXME: should be unpredictable since it's "strexd r8, r7, r8, [r2]"
[0xc2 0xe8 0x78 0x78]
# CHECK: potentially undefined instruction encoding
# CHECK-NEXT: [0xc2 0xe8 0x78 0x78]
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