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; __attribute__((noinline)) int h(int a, int b) { return a + b; }
7;
8; int f(int a, int b, int c, int d) {
9;     if (a < 0)
10;         return -1;
11;     a = h(a, b);
12;     return 2 + a * (a + b) / (c + d);
13; }
14;
15; int g(int a, int b, int c, int d) {
16;     if (a < 0)
17;         return -1;
18;     a = h(a, b);
19;     return 1 + a * (a + b) / (c + d);
20; }
21; Check CFI instructions inside the outlined function.
22
23define dso_local i32 @h(i32 %a, i32 %b) local_unnamed_addr #0 {
24entry:
25  %add = add nsw i32 %b, %a
26  ret i32 %add
27}
28
29define dso_local i32 @f(i32 %a, i32 %b, i32 %c, i32 %d) local_unnamed_addr #1 {
30entry:
31  %cmp = icmp slt i32 %a, 0
32  br i1 %cmp, label %return, label %if.end
33
34if.end:                                           ; preds = %entry
35  %call = tail call i32 @h(i32 %a, i32 %b) #2
36  %add = add nsw i32 %call, %b
37  %mul = mul nsw i32 %add, %call
38  %add1 = add nsw i32 %d, %c
39  %div = sdiv i32 %mul, %add1
40  %add2 = add nsw i32 %div, 2
41  br label %return
42
43return:                                           ; preds = %entry, %if.end
44  %retval.0 = phi i32 [ %add2, %if.end ], [ -1, %entry ]
45  ret i32 %retval.0
46}
47
48define dso_local i32 @g(i32 %a, i32 %b, i32 %c, i32 %d) local_unnamed_addr #1 {
49entry:
50  %cmp = icmp slt i32 %a, 0
51  br i1 %cmp, label %return, label %if.end
52
53if.end:                                           ; preds = %entry
54  %call = tail call i32 @h(i32 %a, i32 %b) #2
55  %add = add nsw i32 %call, %b
56  %mul = mul nsw i32 %add, %call
57  %add1 = add nsw i32 %d, %c
58  %div = sdiv i32 %mul, %add1
59  %add2 = add nsw i32 %div, 1
60  br label %return
61
62return:                                           ; preds = %entry, %if.end
63  %retval.0 = phi i32 [ %add2, %if.end ], [ -1, %entry ]
64  ret i32 %retval.0
65}
66
67; CHECK-LABEL: OUTLINED_FUNCTION_0:
68; CHECK:      str lr, [sp, #-8]!
69; CHECK-NEXT: .cfi_def_cfa_offset 8
70; CHECK-NEXT: .cfi_offset lr, -8
71; CHECK:      ldr lr, [sp], #8
72; CHECK-NEXT: .cfi_def_cfa_offset 0
73; CHECK-NEXT: .cfi_restore lr
74; CHECK-NEXT: bx  lr
75
76attributes #0 = { minsize noinline norecurse nounwind optsize readnone }
77attributes #1 = { minsize norecurse nounwind optsize readnone }
78attributes #2 = { minsize optsize }
79