1 ; RUN: llc -mtriple=aarch64-none-linux-gnu -verify-machineinstrs -relocation-model=pic %s -o - | FileCheck %s 2 ; RUN: llc -mtriple=aarch64-none-linux-gnu -verify-machineinstrs -relocation-model=pic -filetype=obj %s -o -| llvm-objdump -r - | FileCheck --check-prefix=CHECK-ELF %s 3 4 @var = global i32 0 5 6 ; CHECK-ELF: RELOCATION RECORDS FOR [.rela.text] 7 8 define i32 @get_globalvar() { 9 ; CHECK-LABEL: get_globalvar: 10 11 %val = load i32* @var 12 ; CHECK: adrp x[[GOTHI:[0-9]+]], :got:var 13 ; CHECK: ldr x[[GOTLOC:[0-9]+]], [x[[GOTHI]], #:got_lo12:var] 14 ; CHECK: ldr w0, [x[[GOTLOC]]] 15 16 ; CHECK-ELF: R_AARCH64_ADR_GOT_PAGE var 17 ; CHECK-ELF: R_AARCH64_LD64_GOT_LO12_NC var 18 ret i32 %val 19 } 20 21 define i32* @get_globalvaraddr() { 22 ; CHECK-LABEL: get_globalvaraddr: 23 24 %val = load i32* @var 25 ; CHECK: adrp x[[GOTHI:[0-9]+]], :got:var 26 ; CHECK: ldr x0, [x[[GOTHI]], #:got_lo12:var] 27 28 ; CHECK-ELF: R_AARCH64_ADR_GOT_PAGE var 29 ; CHECK-ELF: R_AARCH64_LD64_GOT_LO12_NC var 30 ret i32* @var 31 } 32 33 @hiddenvar = hidden global i32 0 34 35 define i32 @get_hiddenvar() { 36 ; CHECK-LABEL: get_hiddenvar: 37 38 %val = load i32* @hiddenvar 39 ; CHECK: adrp x[[HI:[0-9]+]], hiddenvar 40 ; CHECK: ldr w0, [x[[HI]], #:lo12:hiddenvar] 41 42 ; CHECK-ELF: R_AARCH64_ADR_PREL_PG_HI21 hiddenvar 43 ; CHECK-ELF: R_AARCH64_LDST32_ABS_LO12_NC hiddenvar 44 ret i32 %val 45 } 46 47 define i32* @get_hiddenvaraddr() { 48 ; CHECK-LABEL: get_hiddenvaraddr: 49 50 %val = load i32* @hiddenvar 51 ; CHECK: adrp [[HI:x[0-9]+]], hiddenvar 52 ; CHECK: add x0, [[HI]], #:lo12:hiddenvar 53 54 ; CHECK-ELF: R_AARCH64_ADR_PREL_PG_HI21 hiddenvar 55 ; CHECK-ELF: R_AARCH64_ADD_ABS_LO12_NC hiddenvar 56 ret i32* @hiddenvar 57 } 58 59 define void()* @get_func() { 60 ; CHECK-LABEL: get_func: 61 62 ret void()* bitcast(void()*()* @get_func to void()*) 63 ; CHECK: adrp x[[GOTHI:[0-9]+]], :got:get_func 64 ; CHECK: ldr x0, [x[[GOTHI]], #:got_lo12:get_func] 65 66 ; Particularly important that the ADRP gets a relocation, LLVM tends to think 67 ; it can relax it because it knows where get_func is. It can't! 68 ; CHECK-ELF: R_AARCH64_ADR_GOT_PAGE get_func 69 ; CHECK-ELF: R_AARCH64_LD64_GOT_LO12_NC get_func 70 } 71
