1 ; RUN: llc -mtriple=aarch64-none-linux-gnu -o - %s | FileCheck %s 2 ; RUN: llc -mtriple=aarch64-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 12 ; CHECK: adrp x[[ADDRHI:[0-9]+]], :got:var 13 ; CHECK: ldr x0, [x[[ADDRHI]], :got_lo12:var] 14 15 ; In the large model, the usual relocations are absolute and can 16 ; materialise 0. 17 ; CHECK-LARGE: movz x0, #:abs_g3:var 18 ; CHECK-LARGE: movk x0, #:abs_g2_nc:var 19 ; CHECK-LARGE: movk x0, #:abs_g1_nc:var 20 ; CHECK-LARGE: movk x0, #:abs_g0_nc:var 21 } 22 23 24 @arr_var = extern_weak global [10 x i32] 25 26 define i32* @bar() { 27 %addr = getelementptr [10 x i32]* @arr_var, i32 0, i32 5 28 29 30 ; CHECK: adrp x[[ADDRHI:[0-9]+]], :got:arr_var 31 ; CHECK: ldr [[BASE:x[0-9]+]], [x[[ADDRHI]], :got_lo12:arr_var] 32 ; CHECK: add x0, [[BASE]], #20 33 34 ret i32* %addr 35 36 ; In the large model, the usual relocations are absolute and can 37 ; materialise 0. 38 ; CHECK-LARGE: movz [[ADDR:x[0-9]+]], #:abs_g3:arr_var 39 ; CHECK-LARGE: movk [[ADDR]], #:abs_g2_nc:arr_var 40 ; CHECK-LARGE: movk [[ADDR]], #:abs_g1_nc:arr_var 41 ; CHECK-LARGE: movk [[ADDR]], #:abs_g0_nc:arr_var 42 } 43 44 @defined_weak_var = internal unnamed_addr global i32 0 45 46 define i32* @wibble() { 47 ret i32* @defined_weak_var 48 49 ; CHECK: adrp [[BASE:x[0-9]+]], defined_weak_var 50 ; CHECK: add x0, [[BASE]], :lo12:defined_weak_var 51 52 ; CHECK-LARGE: movz x0, #:abs_g3:defined_weak_var 53 ; CHECK-LARGE: movk x0, #:abs_g2_nc:defined_weak_var 54 ; CHECK-LARGE: movk x0, #:abs_g1_nc:defined_weak_var 55 ; CHECK-LARGE: movk x0, #:abs_g0_nc:defined_weak_var 56 } 57
