weak-alias.ll
12.3 KB
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
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
; RUN: llc -filetype=obj -o %t.o %s
; RUN: llc -filetype=obj %S/Inputs/weak-alias.ll -o %t2.o
; RUN: wasm-ld --export-dynamic %t.o %t2.o -o %t.wasm
; RUN: obj2yaml %t.wasm | FileCheck %s
; Test that weak aliases (alias_fn is a weak alias of direct_fn) are linked correctly
target triple = "wasm32-unknown-unknown"
declare i32 @alias_fn() local_unnamed_addr #1
; Function Attrs: nounwind uwtable
define void @_start() local_unnamed_addr #1 {
entry:
%call = tail call i32 @alias_fn() #2
ret void
}
; CHECK: --- !WASM
; CHECK-NEXT: FileHeader:
; CHECK-NEXT: Version: 0x00000001
; CHECK-NEXT: Sections:
; CHECK-NEXT: - Type: TYPE
; CHECK-NEXT: Signatures:
; CHECK-NEXT: - Index: 0
; CHECK-NEXT: ParamTypes:
; CHECK-NEXT: ReturnTypes: []
; CHECK-NEXT: - Index: 1
; CHECK-NEXT: ParamTypes: []
; CHECK-NEXT: ReturnTypes:
; CHECK-NEXT: - I32
; CHECK-NEXT: - Type: FUNCTION
; CHECK-NEXT: FunctionTypes: [ 0, 1, 1, 1, 1, 1 ]
; CHECK-NEXT: - Type: TABLE
; CHECK-NEXT: Tables:
; CHECK-NEXT: - ElemType: FUNCREF
; CHECK-NEXT: Limits:
; CHECK-NEXT: Flags: [ HAS_MAX ]
; CHECK-NEXT: Initial: 0x00000002
; CHECK-NEXT: Maximum: 0x00000002
; CHECK-NEXT: - Type: MEMORY
; CHECK-NEXT: Memories:
; CHECK-NEXT: - Initial: 0x00000002
; CHECK-NEXT: - Type: GLOBAL
; CHECK-NEXT: Globals:
; CHECK-NEXT: - Index: 0
; CHECK-NEXT: Type: I32
; CHECK-NEXT: Mutable: true
; CHECK-NEXT: InitExpr:
; CHECK-NEXT: Opcode: I32_CONST
; CHECK-NEXT: Value: 66560
; CHECK-NEXT: - Type: EXPORT
; CHECK-NEXT: Exports:
; CHECK-NEXT: - Name: memory
; CHECK-NEXT: Kind: MEMORY
; CHECK-NEXT: Index: 0
; CHECK-NEXT: - Name: _start
; CHECK-NEXT: Kind: FUNCTION
; CHECK-NEXT: Index: 0
; CHECK-NEXT: - Name: alias_fn
; CHECK-NEXT: Kind: FUNCTION
; CHECK-NEXT: Index: 1
; CHECK-NEXT: - Name: direct_fn
; CHECK-NEXT: Kind: FUNCTION
; CHECK-NEXT: Index: 1
; CHECK-NEXT: - Name: call_direct
; CHECK-NEXT: Kind: FUNCTION
; CHECK-NEXT: Index: 2
; CHECK-NEXT: - Name: call_alias
; CHECK-NEXT: Kind: FUNCTION
; CHECK-NEXT: Index: 3
; CHECK-NEXT: - Name: call_alias_ptr
; CHECK-NEXT: Kind: FUNCTION
; CHECK-NEXT: Index: 4
; CHECK-NEXT: - Name: call_direct_ptr
; CHECK-NEXT: Kind: FUNCTION
; CHECK-NEXT: Index: 5
; CHECK-NEXT: - Type: ELEM
; CHECK-NEXT: Segments:
; CHECK-NEXT: - Offset:
; CHECK-NEXT: Opcode: I32_CONST
; CHECK-NEXT: Value: 1
; CHECK-NEXT: Functions: [ 1 ]
; CHECK-NEXT: - Type: CODE
; CHECK-NEXT: Functions:
; CHECK-NEXT: - Index: 0
; CHECK-NEXT: Locals:
; CHECK-NEXT: Body: 1081808080001A0B
; CHECK-NEXT: - Index: 1
; CHECK-NEXT: Locals:
; CHECK-NEXT: Body: 41000B
; CHECK-NEXT: - Index: 2
; CHECK-NEXT: Locals:
; CHECK-NEXT: Body: 1081808080000B
; CHECK-NEXT: - Index: 3
; CHECK-NEXT: Locals:
; CHECK-NEXT: Body: 1081808080000B
; CHECK-NEXT: - Index: 4
; CHECK-NEXT: Locals:
; CHECK-NEXT: - Type: I32
; CHECK-NEXT: Count: 2
; CHECK-NEXT: Body: 23808080800041106B220024808080800020004181808080003602081081808080002101200041106A24808080800020010B
; CHECK-NEXT: - Index: 5
; CHECK-NEXT: Locals:
; CHECK-NEXT: - Type: I32
; CHECK-NEXT: Count: 2
; CHECK-NEXT: Body: 23808080800041106B220024808080800020004181808080003602081081808080002101200041106A24808080800020010B
; CHECK-NEXT: - Type: CUSTOM
; CHECK-NEXT: Name: name
; CHECK-NEXT: FunctionNames:
; CHECK-NEXT: - Index: 0
; CHECK-NEXT: Name: _start
; CHECK-NEXT: - Index: 1
; CHECK-NEXT: Name: direct_fn
; CHECK-NEXT: - Index: 2
; CHECK-NEXT: Name: call_direct
; CHECK-NEXT: - Index: 3
; CHECK-NEXT: Name: call_alias
; CHECK-NEXT: - Index: 4
; CHECK-NEXT: Name: call_alias_ptr
; CHECK-NEXT: - Index: 5
; CHECK-NEXT: Name: call_direct_ptr
; CHECK-NEXT: ...
; RUN: wasm-ld --relocatable %t.o %t2.o -o %t.reloc.o
; RUN: obj2yaml %t.reloc.o | FileCheck %s -check-prefix=RELOC
; RELOC: --- !WASM
; RELOC-NEXT: FileHeader:
; RELOC-NEXT: Version: 0x00000001
; RELOC-NEXT: Sections:
; RELOC-NEXT: - Type: TYPE
; RELOC-NEXT: Signatures:
; RELOC-NEXT: - Index: 0
; RELOC-NEXT: ParamTypes: []
; RELOC-NEXT: ReturnTypes: []
; RELOC-NEXT: - Index: 1
; RELOC-NEXT: ParamTypes: []
; RELOC-NEXT: ReturnTypes:
; RELOC-NEXT: - I32
; RELOC-NEXT: - Type: IMPORT
; RELOC-NEXT: Imports:
; RELOC-NEXT: - Module: env
; RELOC-NEXT: Field: __stack_pointer
; RELOC-NEXT: Kind: GLOBAL
; RELOC-NEXT: GlobalType: I32
; RELOC-NEXT: GlobalMutable: true
; RELOC-NEXT: - Type: FUNCTION
; RELOC-NEXT: FunctionTypes: [ 0, 1, 1, 1, 1, 1 ]
; RELOC-NEXT: - Type: TABLE
; RELOC-NEXT: Tables:
; RELOC-NEXT: - ElemType: FUNCREF
; RELOC-NEXT: Limits:
; RELOC-NEXT: Flags: [ HAS_MAX ]
; RELOC-NEXT: Initial: 0x00000002
; RELOC-NEXT: Maximum: 0x00000002
; RELOC-NEXT: - Type: MEMORY
; RELOC-NEXT: Memories:
; RELOC-NEXT: - Initial: 0x00000000
; RELOC-NEXT: - Type: ELEM
; RELOC-NEXT: Segments:
; RELOC-NEXT: - Offset:
; RELOC-NEXT: Opcode: I32_CONST
; RELOC-NEXT: Value: 1
; RELOC-NEXT: Functions: [ 1 ]
; RELOC-NEXT: - Type: CODE
; RELOC-NEXT: Relocations:
; RELOC-NEXT: - Type: R_WASM_FUNCTION_INDEX_LEB
; RELOC-NEXT: Index: 1
; RELOC-NEXT: Offset: 0x00000004
; RELOC-NEXT: - Type: R_WASM_FUNCTION_INDEX_LEB
; RELOC-NEXT: Index: 2
; RELOC-NEXT: Offset: 0x00000013
; RELOC-NEXT: - Type: R_WASM_FUNCTION_INDEX_LEB
; RELOC-NEXT: Index: 1
; RELOC-NEXT: Offset: 0x0000001C
; RELOC-NEXT: - Type: R_WASM_GLOBAL_INDEX_LEB
; RELOC-NEXT: Index: 6
; RELOC-NEXT: Offset: 0x00000027
; RELOC-NEXT: - Type: R_WASM_GLOBAL_INDEX_LEB
; RELOC-NEXT: Index: 6
; RELOC-NEXT: Offset: 0x00000032
; RELOC-NEXT: - Type: R_WASM_TABLE_INDEX_SLEB
; RELOC-NEXT: Index: 1
; RELOC-NEXT: Offset: 0x0000003A
; RELOC-NEXT: - Type: R_WASM_FUNCTION_INDEX_LEB
; RELOC-NEXT: Index: 1
; RELOC-NEXT: Offset: 0x00000043
; RELOC-NEXT: - Type: R_WASM_GLOBAL_INDEX_LEB
; RELOC-NEXT: Index: 6
; RELOC-NEXT: Offset: 0x00000050
; RELOC-NEXT: - Type: R_WASM_GLOBAL_INDEX_LEB
; RELOC-NEXT: Index: 6
; RELOC-NEXT: Offset: 0x0000005D
; RELOC-NEXT: - Type: R_WASM_GLOBAL_INDEX_LEB
; RELOC-NEXT: Index: 6
; RELOC-NEXT: Offset: 0x00000068
; RELOC-NEXT: - Type: R_WASM_TABLE_INDEX_SLEB
; RELOC-NEXT: Index: 2
; RELOC-NEXT: Offset: 0x00000070
; RELOC-NEXT: - Type: R_WASM_FUNCTION_INDEX_LEB
; RELOC-NEXT: Index: 2
; RELOC-NEXT: Offset: 0x00000079
; RELOC-NEXT: - Type: R_WASM_GLOBAL_INDEX_LEB
; RELOC-NEXT: Index: 6
; RELOC-NEXT: Offset: 0x00000086
; RELOC-NEXT: Functions:
; RELOC-NEXT: - Index: 0
; RELOC-NEXT: Locals:
; RELOC-NEXT: Body: 1081808080001A0B
; RELOC-NEXT: - Index: 1
; RELOC-NEXT: Locals:
; RELOC-NEXT: Body: 41000B
; RELOC-NEXT: - Index: 2
; RELOC-NEXT: Locals:
; RELOC-NEXT: Body: 1081808080000B
; RELOC-NEXT: - Index: 3
; RELOC-NEXT: Locals:
; RELOC-NEXT: Body: 1081808080000B
; RELOC-NEXT: - Index: 4
; RELOC-NEXT: Locals:
; RELOC-NEXT: - Type: I32
; RELOC-NEXT: Count: 2
; RELOC-NEXT: Body: 23808080800041106B220024808080800020004181808080003602081081808080002101200041106A24808080800020010B
; RELOC-NEXT: - Index: 5
; RELOC-NEXT: Locals:
; RELOC-NEXT: - Type: I32
; RELOC-NEXT: Count: 2
; RELOC-NEXT: Body: 23808080800041106B220024808080800020004181808080003602081081808080002101200041106A24808080800020010B
; RELOC-NEXT: - Type: CUSTOM
; RELOC-NEXT: Name: linking
; RELOC-NEXT: Version: 2
; RELOC-NEXT: SymbolTable:
; RELOC-NEXT: - Index: 0
; RELOC-NEXT: Kind: FUNCTION
; RELOC-NEXT: Name: _start
; RELOC-NEXT: Flags: [ ]
; RELOC-NEXT: Function: 0
; RELOC-NEXT: - Index: 1
; RELOC-NEXT: Kind: FUNCTION
; RELOC-NEXT: Name: alias_fn
; RELOC-NEXT: Flags: [ BINDING_WEAK ]
; RELOC-NEXT: Function: 1
; RELOC-NEXT: - Index: 2
; RELOC-NEXT: Kind: FUNCTION
; RELOC-NEXT: Name: direct_fn
; RELOC-NEXT: Flags: [ ]
; RELOC-NEXT: Function: 1
; RELOC-NEXT: - Index: 3
; RELOC-NEXT: Kind: FUNCTION
; RELOC-NEXT: Name: call_direct
; RELOC-NEXT: Flags: [ ]
; RELOC-NEXT: Function: 2
; RELOC-NEXT: - Index: 4
; RELOC-NEXT: Kind: FUNCTION
; RELOC-NEXT: Name: call_alias
; RELOC-NEXT: Flags: [ ]
; RELOC-NEXT: Function: 3
; RELOC-NEXT: - Index: 5
; RELOC-NEXT: Kind: FUNCTION
; RELOC-NEXT: Name: call_alias_ptr
; RELOC-NEXT: Flags: [ ]
; RELOC-NEXT: Function: 4
; RELOC-NEXT: - Index: 6
; RELOC-NEXT: Kind: GLOBAL
; RELOC-NEXT: Name: __stack_pointer
; RELOC-NEXT: Flags: [ UNDEFINED ]
; RELOC-NEXT: Global: 0
; RELOC-NEXT: - Index: 7
; RELOC-NEXT: Kind: FUNCTION
; RELOC-NEXT: Name: call_direct_ptr
; RELOC-NEXT: Flags: [ ]
; RELOC-NEXT: Function: 5
; RELOC-NEXT: - Type: CUSTOM
; RELOC-NEXT: Name: name
; RELOC-NEXT: FunctionNames:
; RELOC-NEXT: - Index: 0
; RELOC-NEXT: Name: _start
; RELOC-NEXT: - Index: 1
; RELOC-NEXT: Name: direct_fn
; RELOC-NEXT: - Index: 2
; RELOC-NEXT: Name: call_direct
; RELOC-NEXT: - Index: 3
; RELOC-NEXT: Name: call_alias
; RELOC-NEXT: - Index: 4
; RELOC-NEXT: Name: call_alias_ptr
; RELOC-NEXT: - Index: 5
; RELOC-NEXT: Name: call_direct_ptr
; RELOC-NEXT: ...