1; RUN: llc -verify-machineinstrs -o - %s -mtriple=aarch64-linux-gnu -mattr=+reserve-x18 | FileCheck %s
2
3define void @f1() shadowcallstack {
4  ; CHECK: f1:
5  ; CHECK-NOT: x18
6  ; CHECK: ret
7  ret void
8}
9
10declare void @foo()
11
12define void @f2() shadowcallstack {
13  ; CHECK: f2:
14  ; CHECK-NOT: x18
15  ; CHECK: b foo
16  tail call void @foo()
17  ret void
18}
19
20declare i32 @bar()
21
22define i32 @f3() shadowcallstack {
23  ; CHECK: f3:
24  ; CHECK: str x30, [x18], #8
25  ; CHECK: str x30, [sp, #-16]!
26  %res = call i32 @bar()
27  %res1 = add i32 %res, 1
28  ; CHECK: ldr x30, [sp], #16
29  ; CHECK: ldr x30, [x18, #-8]!
30  ; CHECK: ret
31  ret i32 %res
32}
33
34define i32 @f4() shadowcallstack {
35  ; CHECK: f4:
36  %res1 = call i32 @bar()
37  %res2 = call i32 @bar()
38  %res3 = call i32 @bar()
39  %res4 = call i32 @bar()
40  %res12 = add i32 %res1, %res2
41  %res34 = add i32 %res3, %res4
42  %res1234 = add i32 %res12, %res34
43  ; CHECK: ldp {{.*}}x30, [sp
44  ; CHECK: ldr x30, [x18, #-8]!
45  ; CHECK: ret
46  ret i32 %res1234
47}
48