xref: /llvm-project/llvm/test/CodeGen/ARM/elf-preemption.ll (revision df00dac828d7d0f88106d34b12a4eafaa8dd93ea)
1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc -mtriple=armv7-linux-gnueabi -relocation-model=static < %s \
3; RUN:   | FileCheck %s --check-prefix=STATIC
4; RUN: llc -mtriple=armv7-linux-gnueabi -relocation-model=pic < %s \
5; RUN:   | FileCheck %s --check-prefix=PIC
6
7@preemptable_var = dso_preemptable global i32 42
8define ptr @get_preemptable_var() nounwind {
9; STATIC-LABEL: get_preemptable_var:
10; STATIC:       @ %bb.0:
11; STATIC-NEXT:    movw r0, :lower16:preemptable_var
12; STATIC-NEXT:    movt r0, :upper16:preemptable_var
13; STATIC-NEXT:    bx lr
14;
15; PIC-LABEL: get_preemptable_var:
16; PIC:       @ %bb.0:
17; PIC-NEXT:    ldr r0, .LCPI0_0
18; PIC-NEXT:  .LPC0_0:
19; PIC-NEXT:    ldr r0, [pc, r0]
20; PIC-NEXT:    bx lr
21; PIC-NEXT:    .p2align 2
22; PIC-NEXT:  @ %bb.1:
23; PIC-NEXT:  .LCPI0_0:
24; PIC-NEXT:  .Ltmp0:
25; PIC-NEXT:    .long preemptable_var(GOT_PREL)-((.LPC0_0+8)-.Ltmp0)
26  ret ptr @preemptable_var
27}
28
29@dsolocal_var = dso_local global i32 42
30define ptr @get_dsolocal_var() nounwind {
31; STATIC-LABEL: get_dsolocal_var:
32; STATIC:       @ %bb.0:
33; STATIC-NEXT:    movw r0, :lower16:dsolocal_var
34; STATIC-NEXT:    movt r0, :upper16:dsolocal_var
35; STATIC-NEXT:    bx lr
36;
37; PIC-LABEL: get_dsolocal_var:
38; PIC:       @ %bb.0:
39; PIC-NEXT:    ldr r0, .LCPI1_0
40; PIC-NEXT:  .LPC1_0:
41; PIC-NEXT:    add r0, pc, r0
42; PIC-NEXT:    bx lr
43; PIC-NEXT:    .p2align 2
44; PIC-NEXT:  @ %bb.1:
45; PIC-NEXT:  .LCPI1_0:
46; PIC-NEXT:    .long .Ldsolocal_var$local-(.LPC1_0+8)
47  ret ptr @dsolocal_var
48}
49
50@weak_dsolocal_var = weak dso_local global i32 42
51define ptr @get_weak_dsolocal_var() nounwind {
52; STATIC-LABEL: get_weak_dsolocal_var:
53; STATIC:       @ %bb.0:
54; STATIC-NEXT:    movw r0, :lower16:weak_dsolocal_var
55; STATIC-NEXT:    movt r0, :upper16:weak_dsolocal_var
56; STATIC-NEXT:    bx lr
57;
58; PIC-LABEL: get_weak_dsolocal_var:
59; PIC:       @ %bb.0:
60; PIC-NEXT:    ldr r0, .LCPI2_0
61; PIC-NEXT:  .LPC2_0:
62; PIC-NEXT:    add r0, pc, r0
63; PIC-NEXT:    bx lr
64; PIC-NEXT:    .p2align 2
65; PIC-NEXT:  @ %bb.1:
66; PIC-NEXT:  .LCPI2_0:
67; PIC-NEXT:    .long weak_dsolocal_var-(.LPC2_0+8)
68  ret ptr @weak_dsolocal_var
69}
70
71@hidden_var = hidden global i32 42
72define ptr @get_hidden_var() nounwind {
73; STATIC-LABEL: get_hidden_var:
74; STATIC:       @ %bb.0:
75; STATIC-NEXT:    movw r0, :lower16:hidden_var
76; STATIC-NEXT:    movt r0, :upper16:hidden_var
77; STATIC-NEXT:    bx lr
78;
79; PIC-LABEL: get_hidden_var:
80; PIC:       @ %bb.0:
81; PIC-NEXT:    ldr r0, .LCPI3_0
82; PIC-NEXT:  .LPC3_0:
83; PIC-NEXT:    add r0, pc, r0
84; PIC-NEXT:    bx lr
85; PIC-NEXT:    .p2align 2
86; PIC-NEXT:  @ %bb.1:
87; PIC-NEXT:  .LCPI3_0:
88; PIC-NEXT:    .long hidden_var-(.LPC3_0+8)
89  ret ptr @hidden_var
90}
91
92@protected_var = protected global i32 42
93define ptr @get_protected_var() nounwind {
94; STATIC-LABEL: get_protected_var:
95; STATIC:       @ %bb.0:
96; STATIC-NEXT:    movw r0, :lower16:protected_var
97; STATIC-NEXT:    movt r0, :upper16:protected_var
98; STATIC-NEXT:    bx lr
99;
100; PIC-LABEL: get_protected_var:
101; PIC:       @ %bb.0:
102; PIC-NEXT:    ldr r0, .LCPI4_0
103; PIC-NEXT:  .LPC4_0:
104; PIC-NEXT:    add r0, pc, r0
105; PIC-NEXT:    bx lr
106; PIC-NEXT:    .p2align 2
107; PIC-NEXT:  @ %bb.1:
108; PIC-NEXT:  .LCPI4_0:
109; PIC-NEXT:    .long protected_var-(.LPC4_0+8)
110  ret ptr @protected_var
111}
112
113define dso_preemptable ptr @preemptable_func() nounwind {
114; STATIC-LABEL: preemptable_func:
115; STATIC:       @ %bb.0:
116; STATIC-NEXT:    movw r0, :lower16:preemptable_func
117; STATIC-NEXT:    movt r0, :upper16:preemptable_func
118; STATIC-NEXT:    bx lr
119;
120; PIC-LABEL: preemptable_func:
121; PIC:       @ %bb.0:
122; PIC-NEXT:    ldr r0, .LCPI5_0
123; PIC-NEXT:  .LPC5_0:
124; PIC-NEXT:    ldr r0, [pc, r0]
125; PIC-NEXT:    bx lr
126; PIC-NEXT:    .p2align 2
127; PIC-NEXT:  @ %bb.1:
128; PIC-NEXT:  .LCPI5_0:
129; PIC-NEXT:  .Ltmp1:
130; PIC-NEXT:    .long preemptable_func(GOT_PREL)-((.LPC5_0+8)-.Ltmp1)
131  ret ptr @preemptable_func
132}
133
134define dso_local ptr @dsolocal_func() nounwind {
135; STATIC-LABEL: dsolocal_func:
136; STATIC:       @ %bb.0:
137; STATIC-NEXT:    movw r0, :lower16:dsolocal_func
138; STATIC-NEXT:    movt r0, :upper16:dsolocal_func
139; STATIC-NEXT:    bx lr
140;
141; PIC-LABEL: dsolocal_func:
142; PIC:       @ %bb.0:
143; PIC-NEXT:    ldr r0, .LCPI6_0
144; PIC-NEXT:  .LPC6_0:
145; PIC-NEXT:    add r0, pc, r0
146; PIC-NEXT:    bx lr
147; PIC-NEXT:    .p2align 2
148; PIC-NEXT:  @ %bb.1:
149; PIC-NEXT:  .LCPI6_0:
150; PIC-NEXT:    .long .Ldsolocal_func$local-(.LPC6_0+8)
151  ret ptr @dsolocal_func
152}
153
154define weak dso_local ptr @weak_dsolocal_func() nounwind {
155; STATIC-LABEL: weak_dsolocal_func:
156; STATIC:       @ %bb.0:
157; STATIC-NEXT:    movw r0, :lower16:weak_dsolocal_func
158; STATIC-NEXT:    movt r0, :upper16:weak_dsolocal_func
159; STATIC-NEXT:    bx lr
160;
161; PIC-LABEL: weak_dsolocal_func:
162; PIC:       @ %bb.0:
163; PIC-NEXT:    ldr r0, .LCPI7_0
164; PIC-NEXT:  .LPC7_0:
165; PIC-NEXT:    add r0, pc, r0
166; PIC-NEXT:    bx lr
167; PIC-NEXT:    .p2align 2
168; PIC-NEXT:  @ %bb.1:
169; PIC-NEXT:  .LCPI7_0:
170; PIC-NEXT:    .long weak_dsolocal_func-(.LPC7_0+8)
171  ret ptr @weak_dsolocal_func
172}
173
174;; call .Ldsolocal_func$local either resolves to a constant at assembly time
175;; or produces a relocation referencing a non-preemptible local symbol.
176define dso_local void @call_dsolocal_func() nounwind {
177; STATIC-LABEL: call_dsolocal_func:
178; STATIC:       @ %bb.0:
179; STATIC-NEXT:    .save {r11, lr}
180; STATIC-NEXT:    push {r11, lr}
181; STATIC-NEXT:    bl dsolocal_func
182; STATIC-NEXT:    pop {r11, pc}
183;
184; PIC-LABEL: call_dsolocal_func:
185; PIC:       @ %bb.0:
186; PIC-NEXT:    .save {r11, lr}
187; PIC-NEXT:    push {r11, lr}
188; PIC-NEXT:    bl .Ldsolocal_func$local
189; PIC-NEXT:    pop {r11, pc}
190  call ptr @dsolocal_func()
191  ret void
192}
193