1; RUN: llc -mtriple=arm64-apple-darwin %s -o - | FileCheck %s
2
3; GOT equivalent globals references can be replaced by the GOT entry of the
4; final symbol instead.
5
6%struct.data = type { i32, %struct.anon }
7%struct.anon = type { i32, i32 }
8
9@localfoo = global i32 42
10@localgotequiv = private unnamed_addr constant i32* @localfoo
11
12@extfoo = external global i32
13@extgotequiv = private unnamed_addr constant i32* @extfoo
14
15; Don't replace GOT equivalent usage within instructions and emit the GOT
16; equivalent since it can't be replaced by the GOT entry. @bargotequiv is
17; used by an instruction inside @t0.
18;
19; CHECK: l_bargotequiv:
20; CHECK-NEXT:  .quad   _extbar
21@extbar = external global i32
22@bargotequiv = private unnamed_addr constant i32* @extbar
23
24@table = global [4 x %struct.data] [
25; CHECK-LABEL: _table
26  %struct.data { i32 1, %struct.anon { i32 2, i32 3 } },
27; Test GOT equivalent usage inside nested constant arrays.
28
29; CHECK: .long   5
30; CHECK-NOT: .long   _localgotequiv-(_table+20)
31; CHECK-NEXT: Ltmp0:
32; CHECK-NEXT: .long _localfoo@GOT-Ltmp0
33  %struct.data { i32 4, %struct.anon { i32 5,
34    i32 trunc (i64 sub (i64 ptrtoint (i32** @localgotequiv to i64),
35                        i64 ptrtoint (i32* getelementptr inbounds ([4 x %struct.data], [4 x %struct.data]* @table, i32 0, i64 1, i32 1, i32 1) to i64))
36                        to i32)}
37  },
38
39; CHECK: .long   5
40; CHECK-NOT: _extgotequiv-(_table+32)
41; CHECK-NEXT: Ltmp1:
42; CHECK-NEXT: _extfoo@GOT-Ltmp1
43  %struct.data { i32 4, %struct.anon { i32 5,
44    i32 trunc (i64 sub (i64 ptrtoint (i32** @extgotequiv to i64),
45                        i64 ptrtoint (i32* getelementptr inbounds ([4 x %struct.data], [4 x %struct.data]* @table, i32 0, i64 2, i32 1, i32 1) to i64))
46                        to i32)}
47  },
48; Test support for arbitrary constants into the GOTPCREL offset, which is
49; supported on x86-64 but not on ARM64
50
51; CHECK: .long   5
52; CHECK-NEXT: .long ((l_extgotequiv-_table)-44)+24
53  %struct.data { i32 4, %struct.anon { i32 5,
54    i32 add (i32 trunc (i64 sub (i64 ptrtoint (i32** @extgotequiv to i64),
55                                 i64 ptrtoint (i32* getelementptr inbounds ([4 x %struct.data], [4 x %struct.data]* @table, i32 0, i64 3, i32 1, i32 1) to i64))
56                                 to i32), i32 24)}
57  }
58], align 16
59
60; Test multiple uses of GOT equivalents.
61
62; CHECK-LABEL: _delta
63; CHECK: Ltmp2:
64; CHECK-NEXT:  .long _extfoo@GOT-Ltmp2
65@delta = global i32 trunc (i64 sub (i64 ptrtoint (i32** @extgotequiv to i64),
66                                    i64 ptrtoint (i32* @delta to i64))
67                           to i32)
68
69; CHECK-LABEL: _deltaplus:
70; CHECK: .long  (l_localgotequiv-_deltaplus)+55
71@deltaplus = global i32 add (i32 trunc (i64 sub (i64 ptrtoint (i32** @localgotequiv to i64),
72                                        i64 ptrtoint (i32* @deltaplus to i64))
73                                        to i32), i32 55)
74
75define i32 @t0(i32 %a) {
76  %x = add i32 trunc (i64 sub (i64 ptrtoint (i32** @bargotequiv to i64),
77                               i64 ptrtoint (i32 (i32)* @t0 to i64))
78                           to i32), %a
79  ret i32 %x
80}
81
82; Check that these got equivalent symbols are emitted on ARM64. Since ARM64
83; does not support encoding an extra offset with @GOT, we still need to emit the
84; equivalents for use by such IR constructs. Check them at the end of the test
85; since they will start out as GOT equivalent candidates, but they are actually
86; needed and are therefore emitted at the end.
87
88; CHECK-LABEL: l_localgotequiv:
89; CHECK-NEXT: .quad   _localfoo
90
91; CHECK-LABEL: l_extgotequiv:
92; CHECK-NEXT: .quad   _extfoo
93