| // REQUIRES: aarch64 |
| // RUN: llvm-mc -filetype=obj -triple=aarch64-none-linux %s -o %t.o |
| // RUN: ld.lld -fix-cortex-a53-843419 %t.o -o %t2 |
| // RUN: llvm-objdump -triple=aarch64-linux-gnu -d %t2 | FileCheck %s |
| |
| // The following code sequence is covered by the TLS IE to LE relaxation. It |
| // transforms the ADRP, LDR to MOVZ, MOVK. The former can trigger a |
| // cortex-a53-843419 patch, whereas the latter can not. As both |
| // relaxation and patching transform instructions very late in the |
| // link there is a possibility of them both being simultaneously |
| // applied. In this case the relaxed sequence is immune from the erratum so we |
| // prefer to keep it. |
| .text |
| .balign 4096 |
| .space 4096 - 8 |
| .globl _start |
| .type _start,@function |
| _start: |
| mrs x1, tpidr_el0 |
| adrp x0, :gottprel:v |
| ldr x1, [x0, #:gottprel_lo12:v] |
| adrp x0, :gottprel:v |
| ldr x1, [x0, #:gottprel_lo12:v] |
| ret |
| |
| // CHECK: _start: |
| // CHECK-NEXT: 210ff8: 41 d0 3b d5 mrs x1, TPIDR_EL0 |
| // CHECK-NEXT: 210ffc: 00 00 a0 d2 movz x0, #0, lsl #16 |
| // CHECK-NEXT: 211000: 01 02 80 f2 movk x1, #16 |
| // CHECK-NEXT: 211004: 00 00 a0 d2 movz x0, #0, lsl #16 |
| // CHECK-NEXT: 211008: 01 02 80 f2 movk x1, #16 |
| // CHECK-NEXT: 21100c: c0 03 5f d6 ret |
| |
| .type v,@object |
| .section .tbss,"awT",@nobits |
| .globl v |
| v: |
| .word 0 |
