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1; RUN: llc < %s -mtriple=aarch64-apple-ios | FileCheck %s
2; RUN: llc < %s -mtriple=aarch64-apple-ios -enable-shrink-wrap=true | FileCheck --check-prefix=CHECK %s
3; Shrink wrapping currently does not kick in because we have a TLS CALL
4; in the entry block and it will clobber the link register.
5
6%struct.S = type { i8 }
7
8@sg = internal thread_local global %struct.S zeroinitializer, align 1
9@__dso_handle = external global i8
10@__tls_guard = internal thread_local unnamed_addr global i1 false
11
12declare %struct.S* @_ZN1SC1Ev(%struct.S* returned)
13declare %struct.S* @_ZN1SD1Ev(%struct.S* returned)
14declare i32 @_tlv_atexit(void (i8*)*, i8*, i8*)
15
16define cxx_fast_tlscc nonnull %struct.S* @_ZTW2sg() nounwind {
17  %.b.i = load i1, i1* @__tls_guard, align 1
18  br i1 %.b.i, label %__tls_init.exit, label %init.i
19
20init.i:
21  store i1 true, i1* @__tls_guard, align 1
22  %call.i.i = tail call %struct.S* @_ZN1SC1Ev(%struct.S* nonnull @sg)
23  %1 = tail call i32 @_tlv_atexit(void (i8*)* nonnull bitcast (%struct.S* (%struct.S*)* @_ZN1SD1Ev to void (i8*)*), i8* nonnull getelementptr inbounds (%struct.S, %struct.S* @sg, i64 0, i32 0), i8* nonnull @__dso_handle)
24  br label %__tls_init.exit
25
26__tls_init.exit:
27  ret %struct.S* @sg
28}
29
30; CHECK-LABEL: _ZTW2sg
31; CHECK-NOT: stp d31, d30
32; CHECK-NOT: stp d29, d28
33; CHECK-NOT: stp d27, d26
34; CHECK-NOT: stp d25, d24
35; CHECK-NOT: stp d23, d22
36; CHECK-NOT: stp d21, d20
37; CHECK-NOT: stp d19, d18
38; CHECK-NOT: stp d17, d16
39; CHECK-NOT: stp d7, d6
40; CHECK-NOT: stp d5, d4
41; CHECK-NOT: stp d3, d2
42; CHECK-NOT: stp d1, d0
43; CHECK-NOT: stp x20, x19
44; CHECK-NOT: stp x14, x13
45; CHECK-NOT: stp x12, x11
46; CHECK-NOT: stp x10, x9
47; CHECK-NOT: stp x8, x7
48; CHECK-NOT: stp x6, x5
49; CHECK-NOT: stp x4, x3
50; CHECK-NOT: stp x2, x1
51; CHECK: blr
52; CHECK: tbnz w{{.*}}, #0, [[BB_end:.?LBB0_[0-9]+]]
53; CHECK: blr
54; CHECK: tlv_atexit
55; CHECK: [[BB_end]]:
56; CHECK: blr
57; CHECK-NOT: ldp x2, x1
58; CHECK-NOT: ldp x4, x3
59; CHECK-NOT: ldp x6, x5
60; CHECK-NOT: ldp x8, x7
61; CHECK-NOT: ldp x10, x9
62; CHECK-NOT: ldp x12, x11
63; CHECK-NOT: ldp x14, x13
64; CHECK-NOT: ldp x20, x19
65; CHECK-NOT: ldp d1, d0
66; CHECK-NOT: ldp d3, d2
67; CHECK-NOT: ldp d5, d4
68; CHECK-NOT: ldp d7, d6
69; CHECK-NOT: ldp d17, d16
70; CHECK-NOT: ldp d19, d18
71; CHECK-NOT: ldp d21, d20
72; CHECK-NOT: ldp d23, d22
73; CHECK-NOT: ldp d25, d24
74; CHECK-NOT: ldp d27, d26
75; CHECK-NOT: ldp d29, d28
76; CHECK-NOT: ldp d31, d30
77