test/MC/ARM/ras-extension.s

   1 @ RUN: llvm-mc -triple   armv8a-none-eabi -mattr=+ras -show-encoding %s | FileCheck %s --check-prefix=ARM
   2 @ RUN: llvm-mc -triple thumbv8a-none-eabi -mattr=+ras -show-encoding %s | FileCheck %s --check-prefix=THUMB
   3 @ RUN: llvm-mc -triple thumbv8.1m.main-none-eabi -show-encoding %s | FileCheck %s --check-prefix=THUMB
   4 @ RUN: not llvm-mc -triple thumbv8m-none-eabi -show-encoding %s 2>&1 | FileCheck %s --check-prefix=FAIL
   5
   6   esb
   7 @ ARM:   esb   @ encoding: [0x10,0xf0,0x20,0xe3]
   8 @ THUMB: esb.w @ encoding: [0xaf,0xf3,0x10,0x80]
   9 @ FAIL: instruction requires: ras