llvm-project/llvm/test/MC/AArch64/armv8.3a-ID_ISAR6_EL1.s

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// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding -mattr=+v8.3a < %s 2>&1 | FileCheck %s
// RUN: not llvm-mc -triple aarch64-none-linux-gnu < %s 2> %t
// RUN: FileCheck --check-prefix=CHECK-REQ %s < %t
mrs x0, ID_ISAR6_EL1
// CHECK: mrs x0, ID_ISAR6_EL1 // encoding: [0xe0,0x02,0x38,0xd5]
// CHECK-REQ: error: expected readable system register
// CHECK-REQ-NEXT: mrs x0, ID_ISAR6_EL1
// CHECK-REQ-NEXT: ^