xref: /llvm-project/llvm/test/CodeGen/ARM/machine-outliner-cfi-2.ll (revision bed1c7f061aa12417aa081e334afdba45767b938) 
1; RUN: llc --verify-machineinstrs --force-dwarf-frame-section %s -o - | FileCheck %s
2target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"
3target triple = "thumbv7m-unknown-unknown-eabi"
4
5; Derived from
6; volatile int a, b, c, d, e, f, g, h;
7;
8; int x() {
9;   int r = a + b + c + d + e + f;
10;   return r + 1;
11; }
12;
13;
14; int y() {
15;   int r = a + b + c + d + e + f;
16;   return r + 2;
17; }
18; Check CFI instructions when LR is saved/restored to/from a register.
19
20@a = dso_local global i32 0, align 4
21@b = dso_local global i32 0, align 4
22@c = dso_local global i32 0, align 4
23@d = dso_local global i32 0, align 4
24@e = dso_local global i32 0, align 4
25@f = dso_local global i32 0, align 4
26
27define dso_local i32 @x() local_unnamed_addr #0 {
28entry:
29  %0 = load volatile i32, ptr @a, align 4
30  %1 = load volatile i32, ptr @b, align 4
31  %2 = load volatile i32, ptr @c, align 4
32  %3 = load volatile i32, ptr @d, align 4
33  %4 = load volatile i32, ptr @e, align 4
34  %5 = load volatile i32, ptr @f, align 4
35  %add = add i32 %0, 1
36  %add1 = add i32 %add, %1
37  %add2 = add i32 %add1, %2
38  %add3 = add i32 %add2, %3
39  %add4 = add i32 %add3, %4
40  %add5 = add i32 %add4, %5
41  ret i32 %add5
42}
43; CHECK-LABEL: x:
44; CHECK:      mov r3, lr
45; CHECK-NEXT: .cfi_register lr, r3
46; CHECK-NEXT: bl  OUTLINED_FUNCTION_0
47; CHECK-NEXT: mov lr, r3
48; CHECK-NEXT: .cfi_restore lr
49
50define dso_local i32 @y() local_unnamed_addr #0 {
51entry:
52  %0 = load volatile i32, ptr @a, align 4
53  %1 = load volatile i32, ptr @b, align 4
54  %2 = load volatile i32, ptr @c, align 4
55  %3 = load volatile i32, ptr @d, align 4
56  %4 = load volatile i32, ptr @e, align 4
57  %5 = load volatile i32, ptr @f, align 4
58  %add = add i32 %0, 2
59  %add1 = add i32 %add, %1
60  %add2 = add i32 %add1, %2
61  %add3 = add i32 %add2, %3
62  %add4 = add i32 %add3, %4
63  %add5 = add i32 %add4, %5
64  ret i32 %add5
65}
66; CHECK-LABEL: y:
67; CHECK:      mov r3, lr
68; CHECK-NEXT: .cfi_register lr, r3
69; CHECK-NEXT: bl  OUTLINED_FUNCTION_0
70; CHECK-NEXT: mov lr, r3
71; CHECK-NEXT: .cfi_restore lr
72
73attributes #0 = { minsize nofree norecurse nounwind optsize  }
74