1 ; RUN: llc -mtriple=arm64-none-linux-gnu -relocation-model=pic -o - < %s | FileCheck %s 2 ; RUN: llc -mtriple=arm64-none-linux-gnu -relocation-model=static -o - < %s | FileCheck --check-prefix=CHECK %s 3 ; RUN: llc -mtriple=arm64-none-linux-gnu -code-model=large -o - < %s | FileCheck --check-prefix=CHECK-LARGE %s 4 5 declare extern_weak i32 @var() 6 7 define i32()* @foo() { 8 ; The usual ADRP/ADD pair can't be used for a weak reference because it must 9 ; evaluate to 0 if the symbol is undefined. We use a GOT entry for PIC 10 ; otherwise a litpool entry. 11 ret i32()* @var 12 13 ; CHECK: adrp x[[VAR:[0-9]+]], :got:var 14 ; CHECK: ldr x0, [x[[VAR]], :got_lo12:var] 15 16 ; In the large model, the usual relocations are absolute and can 17 ; materialise 0. 18 ; CHECK-LARGE: movz x0, #:abs_g3:var 19 ; CHECK-LARGE: movk x0, #:abs_g2_nc:var 20 ; CHECK-LARGE: movk x0, #:abs_g1_nc:var 21 ; CHECK-LARGE: movk x0, #:abs_g0_nc:var 22 } 23 24 25 @arr_var = extern_weak global [10 x i32] 26 27 define i32* @bar() { 28 %addr = getelementptr [10 x i32], [10 x i32]* @arr_var, i32 0, i32 5 29 ; CHECK: adrp x[[ARR_VAR_HI:[0-9]+]], :got:arr_var 30 ; CHECK: ldr [[ARR_VAR:x[0-9]+]], [x[[ARR_VAR_HI]], :got_lo12:arr_var] 31 ; CHECK: add x0, [[ARR_VAR]], #20 32 ret i32* %addr 33 34 ; In the large model, the usual relocations are absolute and can 35 ; materialise 0. 36 ; CHECK-LARGE: movz [[ARR_VAR:x[0-9]+]], #:abs_g3:arr_var 37 ; CHECK-LARGE: movk [[ARR_VAR]], #:abs_g2_nc:arr_var 38 ; CHECK-LARGE: movk [[ARR_VAR]], #:abs_g1_nc:arr_var 39 ; CHECK-LARGE: movk [[ARR_VAR]], #:abs_g0_nc:arr_var 40 } 41 42 @defined_weak_var = internal unnamed_addr global i32 0 43 44 define i32* @wibble() { 45 ret i32* @defined_weak_var 46 ; CHECK: adrp [[BASE:x[0-9]+]], defined_weak_var 47 ; CHECK: add x0, [[BASE]], :lo12:defined_weak_var 48 49 ; CHECK-LARGE: movz x0, #:abs_g3:defined_weak_var 50 ; CHECK-LARGE: movk x0, #:abs_g2_nc:defined_weak_var 51 ; CHECK-LARGE: movk x0, #:abs_g1_nc:defined_weak_var 52 ; CHECK-LARGE: movk x0, #:abs_g0_nc:defined_weak_var 53 } 54
