1; RUN: llc < %s -mtriple=armv6-linux-gnueabi -arm-tail-calls | FileCheck %s -check-prefix=CHECKELF
2; RUN: llc < %s -mtriple=thumbv7-apple-ios -arm-tail-calls | FileCheck %s -check-prefix=CHECKT2D
3
4%struct.A = type { i8 }
5%struct.B = type { i32 }
6%struct.C = type { %struct.B }
7%struct.D = type { %struct.B }
8%struct.E = type { %struct.B, %struct.B }
9
10declare %struct.A* @A_ctor_base(%struct.A* returned)
11declare %struct.B* @B_ctor_base(%struct.B* returned, i32)
12declare %struct.B* @B_ctor_complete(%struct.B* returned, i32)
13
14declare %struct.A* @A_ctor_base_nothisret(%struct.A*)
15declare %struct.B* @B_ctor_base_nothisret(%struct.B*, i32)
16declare %struct.B* @B_ctor_complete_nothisret(%struct.B*, i32)
17
18define %struct.C* @C_ctor_base(%struct.C* returned %this, i32 %x) {
19entry:
20; CHECKELF-LABEL: C_ctor_base:
21; CHECKELF-NOT: mov {{r[0-9]+}}, r0
22; CHECKELF: bl A_ctor_base
23; CHECKELF-NOT: mov r0, {{r[0-9]+}}
24; CHECKELF: b B_ctor_base
25; CHECKT2D-LABEL: C_ctor_base:
26; CHECKT2D-NOT: mov {{r[0-9]+}}, r0
27; CHECKT2D: blx _A_ctor_base
28; CHECKT2D-NOT: mov r0, {{r[0-9]+}}
29; CHECKT2D: b.w _B_ctor_base
30  %0 = bitcast %struct.C* %this to %struct.A*
31  %call = tail call %struct.A* @A_ctor_base(%struct.A* %0)
32  %1 = getelementptr inbounds %struct.C* %this, i32 0, i32 0
33  %call2 = tail call %struct.B* @B_ctor_base(%struct.B* %1, i32 %x)
34  ret %struct.C* %this
35}
36
37define %struct.C* @C_ctor_base_nothisret(%struct.C* %this, i32 %x) {
38entry:
39; CHECKELF-LABEL: C_ctor_base_nothisret:
40; CHECKELF: mov [[SAVETHIS:r[0-9]+]], r0
41; CHECKELF: bl A_ctor_base_nothisret
42; CHECKELF: mov r0, [[SAVETHIS]]
43; CHECKELF-NOT: b B_ctor_base_nothisret
44; CHECKT2D-LABEL: C_ctor_base_nothisret:
45; CHECKT2D: mov [[SAVETHIS:r[0-9]+]], r0
46; CHECKT2D: blx _A_ctor_base_nothisret
47; CHECKT2D: mov r0, [[SAVETHIS]]
48; CHECKT2D-NOT: b.w _B_ctor_base_nothisret
49  %0 = bitcast %struct.C* %this to %struct.A*
50  %call = tail call %struct.A* @A_ctor_base_nothisret(%struct.A* %0)
51  %1 = getelementptr inbounds %struct.C* %this, i32 0, i32 0
52  %call2 = tail call %struct.B* @B_ctor_base_nothisret(%struct.B* %1, i32 %x)
53  ret %struct.C* %this
54}
55
56define %struct.C* @C_ctor_complete(%struct.C* %this, i32 %x) {
57entry:
58; CHECKELF-LABEL: C_ctor_complete:
59; CHECKELF: b C_ctor_base
60; CHECKT2D-LABEL: C_ctor_complete:
61; CHECKT2D: b.w _C_ctor_base
62  %call = tail call %struct.C* @C_ctor_base(%struct.C* %this, i32 %x)
63  ret %struct.C* %this
64}
65
66define %struct.C* @C_ctor_complete_nothisret(%struct.C* %this, i32 %x) {
67entry:
68; CHECKELF-LABEL: C_ctor_complete_nothisret:
69; CHECKELF-NOT: b C_ctor_base_nothisret
70; CHECKT2D-LABEL: C_ctor_complete_nothisret:
71; CHECKT2D-NOT: b.w _C_ctor_base_nothisret
72  %call = tail call %struct.C* @C_ctor_base_nothisret(%struct.C* %this, i32 %x)
73  ret %struct.C* %this
74}
75
76define %struct.D* @D_ctor_base(%struct.D* %this, i32 %x) {
77entry:
78; CHECKELF-LABEL: D_ctor_base:
79; CHECKELF-NOT: mov {{r[0-9]+}}, r0
80; CHECKELF: bl B_ctor_complete
81; CHECKELF-NOT: mov r0, {{r[0-9]+}}
82; CHECKELF: b B_ctor_complete
83; CHECKT2D-LABEL: D_ctor_base:
84; CHECKT2D-NOT: mov {{r[0-9]+}}, r0
85; CHECKT2D: blx _B_ctor_complete
86; CHECKT2D-NOT: mov r0, {{r[0-9]+}}
87; CHECKT2D: b.w _B_ctor_complete
88  %b = getelementptr inbounds %struct.D* %this, i32 0, i32 0
89  %call = tail call %struct.B* @B_ctor_complete(%struct.B* %b, i32 %x)
90  %call2 = tail call %struct.B* @B_ctor_complete(%struct.B* %b, i32 %x)
91  ret %struct.D* %this
92}
93
94define %struct.E* @E_ctor_base(%struct.E* %this, i32 %x) {
95entry:
96; CHECKELF-LABEL: E_ctor_base:
97; CHECKELF-NOT: b B_ctor_complete
98; CHECKT2D-LABEL: E_ctor_base:
99; CHECKT2D-NOT: b.w _B_ctor_complete
100  %b = getelementptr inbounds %struct.E* %this, i32 0, i32 0
101  %call = tail call %struct.B* @B_ctor_complete(%struct.B* %b, i32 %x)
102  %b2 = getelementptr inbounds %struct.E* %this, i32 0, i32 1
103  %call2 = tail call %struct.B* @B_ctor_complete(%struct.B* %b2, i32 %x)
104  ret %struct.E* %this
105}
106