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 ; CHECK: .LCPI0_0: 11 ; CHECK-NEXT: .xword var 12 13 ; CHECK: ldr x0, [{{x[0-9]+}}, #:lo12:.LCPI0_0] 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 ; CHECK: .LCPI1_0: 29 ; CHECK-NEXT: .xword arr_var 30 31 ; CHECK: ldr [[BASE:x[0-9]+]], [{{x[0-9]+}}, #:lo12:.LCPI1_0] 32 ; CHECK: add x0, [[BASE]], #20 33 ret i32* %addr 34 35 ; In the large model, the usual relocations are absolute and can 36 ; materialise 0. 37 ; CHECK-LARGE: movz x0, #:abs_g3:arr_var 38 ; CHECK-LARGE: movk x0, #:abs_g2_nc:arr_var 39 ; CHECK-LARGE: movk x0, #:abs_g1_nc:arr_var 40 ; CHECK-LARGE: movk x0, #:abs_g0_nc:arr_var 41 } 42 43 @defined_weak_var = internal unnamed_addr global i32 0 44 45 define i32* @wibble() { 46 ret i32* @defined_weak_var 47 ; CHECK: adrp [[BASE:x[0-9]+]], defined_weak_var 48 ; CHECK: add x0, [[BASE]], #:lo12:defined_weak_var 49 50 ; CHECK-LARGE: movz x0, #:abs_g3:defined_weak_var 51 ; CHECK-LARGE: movk x0, #:abs_g2_nc:defined_weak_var 52 ; CHECK-LARGE: movk x0, #:abs_g1_nc:defined_weak_var 53 ; CHECK-LARGE: movk x0, #:abs_g0_nc:defined_weak_var 54 } 55
