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; RUN: llc -mtriple=aarch64-none-none-eabi -code-model=tiny -o - %s | FileCheck --check-prefix=CHECK-TINY %s
5
6declare extern_weak i32 @var()
7
8define i32()* @foo() {
9; The usual ADRP/ADD pair can't be used for a weak reference because it must
10; evaluate to 0 if the symbol is undefined. We use a GOT entry for PIC
11; otherwise a litpool entry.
12  ret i32()* @var
13
14
15; CHECK: adrp x[[ADDRHI:[0-9]+]], :got:var
16; CHECK: ldr x0, [x[[ADDRHI]], :got_lo12:var]
17
18  ; In the large model, the usual relocations are absolute and can
19  ; materialise 0.
20; CHECK-LARGE: movz x0, #:abs_g0_nc:var
21; CHECK-LARGE: movk x0, #:abs_g1_nc:var
22; CHECK-LARGE: movk x0, #:abs_g2_nc:var
23; CHECK-LARGE: movk x0, #:abs_g3:var
24
25  ; In the tiny codemodel we us a got relocated LDR.
26; CHECK-TINY: ldr x0, :got:var
27}
28
29
30@arr_var = extern_weak global [10 x i32]
31
32define i32* @bar() {
33  %addr = getelementptr [10 x i32], [10 x i32]* @arr_var, i32 0, i32 5
34
35
36; CHECK: adrp x[[ADDRHI:[0-9]+]], :got:arr_var
37; CHECK: ldr [[BASE:x[0-9]+]], [x[[ADDRHI]], :got_lo12:arr_var]
38; CHECK: add x0, [[BASE]], #20
39
40  ret i32* %addr
41
42  ; In the large model, the usual relocations are absolute and can
43  ; materialise 0.
44; CHECK-LARGE: movz [[ADDR:x[0-9]+]], #:abs_g0_nc:arr_var
45; CHECK-LARGE: movk [[ADDR]], #:abs_g1_nc:arr_var
46; CHECK-LARGE: movk [[ADDR]], #:abs_g2_nc:arr_var
47; CHECK-LARGE: movk [[ADDR]], #:abs_g3:arr_var
48
49; CHECK-TINY: ldr [[BASE:x[0-9]+]], :got:arr_var
50; CHECK-TINY: add x0, [[BASE]], #20
51}
52
53@defined_weak_var = internal unnamed_addr global i32 0
54
55define i32* @wibble() {
56  ret i32* @defined_weak_var
57
58; CHECK: adrp [[BASE:x[0-9]+]], defined_weak_var
59; CHECK: add x0, [[BASE]], :lo12:defined_weak_var
60
61; CHECK-LARGE: movz x0, #:abs_g0_nc:defined_weak_var
62; CHECK-LARGE: movk x0, #:abs_g1_nc:defined_weak_var
63; CHECK-LARGE: movk x0, #:abs_g2_nc:defined_weak_var
64; CHECK-LARGE: movk x0, #:abs_g3:defined_weak_var
65
66; CHECK-TINY: adr x0, defined_weak_var
67}
68