ldr-pseudo.s
6.99 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
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
//RUN: llvm-mc -triple=aarch64-linux-gnu -print-imm-hex %s | FileCheck %s
//
// Check that large constants are converted to ldr from constant pool
//
// simple test
.section a, "ax", @progbits
// CHECK-LABEL: f1:
f1:
ldr x0, =0x1234
// CHECK: mov x0, #0x1234
ldr w1, =0x4567
// CHECK: mov w1, #0x4567
ldr x0, =0x12340000
// CHECK: mov x0, #0x12340000
ldr w1, =0x45670000
// CHECK: mov w1, #0x45670000
ldr x0, =0xabc00000000
// CHECK: mov x0, #0xabc00000000
ldr x0, =0xbeef000000000000
// CHECK: mov x0, #-0x4111000000000000
.section b,"ax",@progbits
// CHECK-LABEL: f3:
f3:
ldr w0, =0x10001
// CHECK: ldr w0, .Ltmp[[TMP0:[0-9]+]]
// loading multiple constants
.section c,"ax",@progbits
// CHECK-LABEL: f4:
f4:
ldr w0, =0x10002
// CHECK: ldr w0, .Ltmp[[TMP1:[0-9]+]]
adds x0, x0, #1
adds x0, x0, #1
adds x0, x0, #1
adds x0, x0, #1
ldr w0, =0x10003
// CHECK: ldr w0, .Ltmp[[TMP2:[0-9]+]]
adds x0, x0, #1
adds x0, x0, #1
// TODO: the same constants should have the same constant pool location
.section d,"ax",@progbits
// CHECK-LABEL: f5:
f5:
ldr w0, =0x10004
// CHECK: ldr w0, .Ltmp[[TMP3:[0-9]+]]
adds x0, x0, #1
adds x0, x0, #1
adds x0, x0, #1
adds x0, x0, #1
adds x0, x0, #1
adds x0, x0, #1
adds x0, x0, #1
ldr w0, =0x10004
// CHECK: ldr w0, .Ltmp[[TMP3:[0-9]+]]
adds x0, x0, #1
adds x0, x0, #1
adds x0, x0, #1
adds x0, x0, #1
adds x0, x0, #1
adds x0, x0, #1
// a section defined in multiple pieces should be merged and use a single constant pool
.section e,"ax",@progbits
// CHECK-LABEL: f6:
f6:
ldr w0, =0x10006
// CHECK: ldr w0, .Ltmp[[TMP5:[0-9]+]]
adds x0, x0, #1
adds x0, x0, #1
adds x0, x0, #1
.section f, "ax", @progbits
// CHECK-LABEL: f7:
f7:
adds x0, x0, #1
adds x0, x0, #1
adds x0, x0, #1
.section e, "ax", @progbits
// CHECK-LABEL: f8:
f8:
adds x0, x0, #1
ldr w0, =0x10007
// CHECK: ldr w0, .Ltmp[[TMP6:[0-9]+]]
adds x0, x0, #1
adds x0, x0, #1
//
// Check that symbols can be loaded using ldr pseudo
//
// load an undefined symbol
.section g,"ax",@progbits
// CHECK-LABEL: f9:
f9:
ldr w0, =foo
// CHECK: ldr w0, .Ltmp[[TMP7:[0-9]+]]
// load a symbol from another section
.section h,"ax",@progbits
// CHECK-LABEL: f10:
f10:
ldr w0, =f5
// CHECK: ldr w0, .Ltmp[[TMP8:[0-9]+]]
// load a symbol from the same section
.section i,"ax",@progbits
// CHECK-LABEL: f11:
f11:
ldr w0, =f12
// CHECK: ldr w0, .Ltmp[[TMP9:[0-9]+]]
ldr w0,=0x3C000
// CHECK: ldr w0, .Ltmp[[TMP10:[0-9]+]]
// CHECK-LABEL: f12:
f12:
adds x0, x0, #1
adds x0, x0, #1
.section j,"ax",@progbits
// mix of symbols and constants
// CHECK-LABEL: f13:
f13:
adds x0, x0, #1
adds x0, x0, #1
ldr w0, =0x101
// CHECK: mov w0, #0x101
adds x0, x0, #1
adds x0, x0, #1
ldr w0, =bar
// CHECK: ldr w0, .Ltmp[[TMP11:[0-9]+]]
adds x0, x0, #1
adds x0, x0, #1
//
// Check for correct usage in other contexts
//
// usage in macro
.macro useit_in_a_macro
ldr w0, =0x10008
ldr w0, =baz
.endm
.section k,"ax",@progbits
// CHECK-LABEL: f14:
f14:
useit_in_a_macro
// CHECK: ldr w0, .Ltmp[[TMP12:[0-9]+]]
// CHECK: ldr w0, .Ltmp[[TMP13:[0-9]+]]
// usage with expressions
.section l, "ax", @progbits
// CHECK-LABEL: f15:
f15:
ldr w0, =0x10001+8
// CHECK: ldr w0, .Ltmp[[TMP14:[0-9]+]]
adds x0, x0, #1
ldr w0, =bar+4
// CHECK: ldr w0, .Ltmp[[TMP15:[0-9]+]]
adds x0, x0, #1
// usage with 64-bit regs
.section m, "ax", @progbits
// CHECK-LABEL: f16:
f16:
ldr x0, =0x0102030405060708
// CHECK: ldr x0, .Ltmp[[TMP16:[0-9]+]]
add x0, x0, #1
ldr w0, =bar
// CHECK: ldr w0, .Ltmp[[TMP17:[0-9]+]]
ldr x0, =bar+16
// CHECK: ldr x0, .Ltmp[[TMP18:[0-9]+]]
add x0, x0, #1
ldr x0, =0x100000001
// CHECK: ldr x0, .Ltmp[[TMP19:[0-9]+]]
ldr x1, =-0x80000001
// CHECK: ldr x1, .Ltmp[[TMP20:[0-9]+]]
ldr x2, =0x10001
// CHECK: ldr x2, .Ltmp[[TMP21:[0-9]+]]
// check range for 32-bit regs
.section n, "ax", @progbits
// CHECK-LABEL: f17:
f17:
ldr w0, =0xFFFFFFFF
// CHECK: ldr w0, .Ltmp[[TMP22:[0-9]+]]
add w0, w0, #1
ldr w1, =-0x7FFFFFFF
// CHECK: ldr w1, .Ltmp[[TMP23:[0-9]+]]
add w0, w0, #1
ldr w0, =-1
// CHECK: ldr w0, .Ltmp[[TMP24:[0-9]+]]
add w0, w0, #1
// make sure the same contant uses different pools for 32- and 64-bit registers
.section o, "ax", @progbits
// CHECK-LABEL: f18:
f18:
ldr w0, =0x320064
// CHECK: ldr w0, .Ltmp[[TMP25:[0-9]+]]
add w0, w0, #1
ldr x1, =0x320064
// CHECK: ldr x1, .Ltmp[[TMP26:[0-9]+]]
// We previously used a DenseMap with constant values as keys, check that
// sentinel values can be used.
ldr x0, =0x7ffffffffffffffe
// CHECK: ldr x0, .Ltmp[[TMP27:[0-9]+]]
ldr x1, =0x7fffffffffffffff
// CHECK: ldr x1, .Ltmp[[TMP28:[0-9]+]]
//
// Constant Pools
//
// CHECK: .section b,"ax",@progbits
// CHECK: .p2align 2
// CHECK: .Ltmp[[TMP0]]
// CHECK: .word 65537
// CHECK: .section c,"ax",@progbits
// CHECK: .p2align 2
// CHECK: .Ltmp[[TMP1]]
// CHECK: .word 65538
// CHECK: .p2align 2
// CHECK: .Ltmp[[TMP2]]
// CHECK: .word 65539
// CHECK: .section d,"ax",@progbits
// CHECK: .p2align 2
// CHECK: .Ltmp[[TMP3]]
// CHECK: .word 65540
// CHECK: .section e,"ax",@progbits
// CHECK: .p2align 2
// CHECK: .Ltmp[[TMP5]]
// CHECK: .word 65542
// CHECK: .p2align 2
// CHECK: .Ltmp[[TMP6]]
// CHECK: .word 65543
// Should not switch to section because it has no constant pool
// CHECK-NOT: .section f,"ax",@progbits
// CHECK: .section g,"ax",@progbits
// CHECK: .p2align 2
// CHECK: .Ltmp[[TMP7]]
// CHECK: .word foo
// CHECK: .section h,"ax",@progbits
// CHECK: .p2align 2
// CHECK: .Ltmp[[TMP8]]
// CHECK: .word f5
// CHECK: .section i,"ax",@progbits
// CHECK: .p2align 2
// CHECK: .Ltmp[[TMP9]]
// CHECK: .word f12
// CHECK: .p2align 2
// CHECK: .Ltmp[[TMP10]]
// CHECK: .word 245760
// CHECK: .section j,"ax",@progbits
// CHECK: .p2align 2
// CHECK: .Ltmp[[TMP11]]
// CHECK: .word bar
// CHECK: .section k,"ax",@progbits
// CHECK: .p2align 2
// CHECK: .Ltmp[[TMP12]]
// CHECK: .word 65544
// CHECK: .p2align 2
// CHECK: .Ltmp[[TMP13]]
// CHECK: .word baz
// CHECK: .section l,"ax",@progbits
// CHECK: .p2align 2
// CHECK: .Ltmp[[TMP14]]
// CHECK: .word 65545
// CHECK: .p2align 2
// CHECK: .Ltmp[[TMP15]]
// CHECK: .word bar+4
// CHECK: .section m,"ax",@progbits
// CHECK: .p2align 3
// CHECK: .Ltmp[[TMP16]]
// CHECK: .xword 72623859790382856
// CHECK: .p2align 2
// CHECK: .Ltmp[[TMP17]]
// CHECK: .word bar
// CHECK: .p2align 3
// CHECK: .Ltmp[[TMP18]]
// CHECK: .xword bar+16
// CHECK: .p2align 3
// CHECK: .Ltmp[[TMP19]]
// CHECK: .xword 4294967297
// CHECK: .p2align 3
// CHECK: .Ltmp[[TMP20]]
// CHECK: .xword -2147483649
// CHECK: .p2align 3
// CHECK: .Ltmp[[TMP21]]
// CHECK: .xword 65537
// CHECK: .section n,"ax",@progbits
// CHECK: .p2align 2
// CHECK: .Ltmp[[TMP22]]
// CHECK: .word 4294967295
// CHECK: .p2align 2
// CHECK: .Ltmp[[TMP23]]
// CHECK: .word -2147483647
// CHECK: .p2align 2
// CHECK: .Ltmp[[TMP24]]
// CHECK: .word -1
// CHECK: .section o,"ax",@progbits
// CHECK: .p2align 2
// CHECK: .Ltmp[[TMP25]]
// CHECK: .word 3276900
// CHECK: .Ltmp[[TMP27]]
// CHECK: .xword 9223372036854775806
// CHECK: .Ltmp[[TMP28]]
// CHECK: .xword 9223372036854775807