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