| # 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: ^ |