# RUN: llvm-mc -triple arm-none-linux-gnu -mattr=+v8.4a --disassemble < %s | FileCheck %s
# RUN: not llvm-mc -triple arm-none-linux-gnu -mattr=-v8.4a --disassemble < %s 2>&1 | FileCheck %s --check-prefix=CHECK-NO-V84

[0x12,0xf0,0x20,0xe3]

#CHECK: tsb csync

#CHECK-NO-V84: warning: invalid instruction encoding
#CHECK-NO-V84: [0x12,0xf0,0x20,0xe3]
#CHECK-NO-V84:  ^
