1 ; RUN: llc -mtriple=aarch64-none-linux-gnu -relocation-model=pic -o - %s | FileCheck %s 2 ; RUN: llc -mtriple=aarch64-none-linux-gnu -relocation-model=static -o - < %s | FileCheck %s 3 ; RUN: llc -mtriple=aarch64-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 14 ; CHECK: adrp x[[ADDRHI:[0-9]+]], :got:var 15 ; CHECK: ldr x0, [x[[ADDRHI]], :got_lo12:var] 16 17 ; In the large model, the usual relocations are absolute and can 18 ; materialise 0. 19 ; CHECK-LARGE: movz x0, #:abs_g0_nc:var 20 ; CHECK-LARGE: movk x0, #:abs_g1_nc:var 21 ; CHECK-LARGE: movk x0, #:abs_g2_nc:var 22 ; CHECK-LARGE: movk x0, #:abs_g3:var 23 } 24 25 26 @arr_var = extern_weak global [10 x i32] 27 28 define i32* @bar() { 29 %addr = getelementptr [10 x i32], [10 x i32]* @arr_var, i32 0, i32 5 30 31 32 ; CHECK: adrp x[[ADDRHI:[0-9]+]], :got:arr_var 33 ; CHECK: ldr [[BASE:x[0-9]+]], [x[[ADDRHI]], :got_lo12:arr_var] 34 ; CHECK: add x0, [[BASE]], #20 35 36 ret i32* %addr 37 38 ; In the large model, the usual relocations are absolute and can 39 ; materialise 0. 40 ; CHECK-LARGE: movz [[ADDR:x[0-9]+]], #:abs_g0_nc:arr_var 41 ; CHECK-LARGE: movk [[ADDR]], #:abs_g1_nc:arr_var 42 ; CHECK-LARGE: movk [[ADDR]], #:abs_g2_nc:arr_var 43 ; CHECK-LARGE: movk [[ADDR]], #:abs_g3:arr_var 44 } 45 46 @defined_weak_var = internal unnamed_addr global i32 0 47 48 define i32* @wibble() { 49 ret i32* @defined_weak_var 50 51 ; CHECK: adrp [[BASE:x[0-9]+]], defined_weak_var 52 ; CHECK: add x0, [[BASE]], :lo12:defined_weak_var 53 54 ; CHECK-LARGE: movz x0, #:abs_g0_nc:defined_weak_var 55 ; CHECK-LARGE: movk x0, #:abs_g1_nc:defined_weak_var 56 ; CHECK-LARGE: movk x0, #:abs_g2_nc:defined_weak_var 57 ; CHECK-LARGE: movk x0, #:abs_g3:defined_weak_var 58 } 59
