1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -O2 -mtriple=m68k-linux-gnu -verify-machineinstrs \
; RUN: -code-model=medium -relocation-model=pic \
; RUN: | FileCheck %s
; External Linkage
@a = global i32 0, align 4
define i32 @my_access_global_a() #0 {
; CHECK-LABEL: my_access_global_a:
; CHECK: .cfi_startproc
; CHECK-NEXT: ; %bb.0: ; %entry
; CHECK-NEXT: move.l (a@GOTPCREL,%pc), %a0
; CHECK-NEXT: move.l (%a0), %d0
; CHECK-NEXT: rts
entry:
%0 = load i32, i32* @a, align 4
ret i32 %0
}
; WeakAny Linkage
@b = weak global i32 0, align 4
define i32 @my_access_global_b() #0 {
; CHECK-LABEL: my_access_global_b:
; CHECK: .cfi_startproc
; CHECK-NEXT: ; %bb.0: ; %entry
; CHECK-NEXT: move.l (b@GOTPCREL,%pc), %a0
; CHECK-NEXT: move.l (%a0), %d0
; CHECK-NEXT: rts
entry:
%0 = load i32, i32* @b, align 4
ret i32 %0
}
; Internal Linkage
@c = internal global i32 0, align 4
define i32 @my_access_global_c() #0 {
; CHECK-LABEL: my_access_global_c:
; CHECK: .cfi_startproc
; CHECK-NEXT: ; %bb.0: ; %entry
; CHECK-NEXT: lea (_GLOBAL_OFFSET_TABLE_@GOTPCREL,%pc), %a0
; CHECK-NEXT: move.l #c@GOTOFF, %d0
; CHECK-NEXT: move.l (0,%a0,%d0), %d0
; CHECK-NEXT: rts
entry:
%0 = load i32, i32* @c, align 4
ret i32 %0
}
; External Linkage, only declaration.
@d = external global i32, align 4
define i32 @my_access_global_load_d() #0 {
; CHECK-LABEL: my_access_global_load_d:
; CHECK: .cfi_startproc
; CHECK-NEXT: ; %bb.0: ; %entry
; CHECK-NEXT: move.l (d@GOTPCREL,%pc), %a0
; CHECK-NEXT: move.l (%a0), %d0
; CHECK-NEXT: rts
entry:
%0 = load i32, i32* @d, align 4
ret i32 %0
}
; External Linkage, only declaration, store a value.
define i32 @my_access_global_store_d() #0 {
; CHECK-LABEL: my_access_global_store_d:
; CHECK: .cfi_startproc
; CHECK-NEXT: ; %bb.0: ; %entry
; CHECK-NEXT: move.l (d@GOTPCREL,%pc), %a0
; CHECK-NEXT: move.l #2, (%a0)
; CHECK-NEXT: move.l #0, %d0
; CHECK-NEXT: rts
entry:
store i32 2, i32* @d, align 4
ret i32 0
}
; External Linkage, function pointer access.
declare i32 @access_fp(i32 ()*)
declare i32 @foo()
define i32 @my_access_fp_foo() #0 {
; CHECK-LABEL: my_access_fp_foo:
; CHECK: .cfi_startproc
; CHECK-NEXT: ; %bb.0: ; %entry
; CHECK-NEXT: suba.l #4, %sp
; CHECK-NEXT: .cfi_def_cfa_offset -8
; CHECK-NEXT: move.l (foo@GOTPCREL,%pc), (%sp)
; CHECK-NEXT: jsr (access_fp@PLT,%pc)
; CHECK-NEXT: adda.l #4, %sp
; CHECK-NEXT: rts
entry:
%call = call i32 @access_fp(i32 ()* @foo)
ret i32 %call
}
; LinkOnceODR Linkage, function pointer access.
$bar = comdat any
define linkonce_odr i32 @bar() comdat {
; CHECK-LABEL: bar:
; CHECK: .cfi_startproc
; CHECK-NEXT: ; %bb.0: ; %entry
; CHECK-NEXT: move.l #0, %d0
; CHECK-NEXT: rts
entry:
ret i32 0
}
define i32 @my_access_fp_bar() #0 {
; CHECK-LABEL: my_access_fp_bar:
; CHECK: .cfi_startproc
; CHECK-NEXT: ; %bb.0: ; %entry
; CHECK-NEXT: suba.l #4, %sp
; CHECK-NEXT: .cfi_def_cfa_offset -8
; CHECK-NEXT: move.l (bar@GOTPCREL,%pc), (%sp)
; CHECK-NEXT: jsr (access_fp@PLT,%pc)
; CHECK-NEXT: adda.l #4, %sp
; CHECK-NEXT: rts
entry:
%call = call i32 @access_fp(i32 ()* @bar)
ret i32 %call
}
!llvm.module.flags = !{!0, !1}
!0 = !{i32 1, !"PIC Level", i32 1}
!1 = !{i32 1, !"PIE Level", i32 1}
|
