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 4declare extern_weak i32 @var() 5 6define 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 26define 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 45define 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