forked from llvm/llvm-project
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathcoro-async.ll
617 lines (545 loc) · 32.6 KB
/
coro-async.ll
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
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
; RUN: opt < %s -enable-coroutines -passes='default<O2>' -S | FileCheck --check-prefixes=CHECK %s
; RUN: opt < %s -enable-coroutines -O0 -S | FileCheck --check-prefixes=CHECK-O0 %s
target datalayout = "p:64:64:64"
%async.task = type { i64 }
%async.actor = type { i64 }
%async.fp = type <{ i32, i32 }>
%async.ctxt = type { i8*, void (i8*, %async.task*, %async.actor*)* }
; The async callee.
@my_other_async_function_fp = external global <{ i32, i32 }>
declare void @my_other_async_function(i8* %async.ctxt)
; The current async function (the caller).
; This struct describes an async function. The first field is the
; relative offset to the async function implementation, the second field is the
; size needed for the async context of the current async function.
@my_async_function_fp = constant <{ i32, i32 }>
<{ i32 trunc ( ; Relative pointer to async function
i64 sub (
i64 ptrtoint (void (i8*, %async.task*, %async.actor*)* @my_async_function to i64),
i64 ptrtoint (i32* getelementptr inbounds (<{ i32, i32 }>, <{ i32, i32 }>* @my_async_function_fp, i32 0, i32 1) to i64)
)
to i32),
i32 128 ; Initial async context size without space for frame
}>
@my_async_function_pa_fp = constant <{ i32, i32 }>
<{ i32 trunc (
i64 sub (
i64 ptrtoint (void (i8*, %async.task*, %async.actor*)* @my_async_function_pa to i64),
i64 ptrtoint (i32* getelementptr inbounds (<{ i32, i32 }>, <{ i32, i32 }>* @my_async_function_pa_fp, i32 0, i32 1) to i64)
)
to i32),
i32 8
}>
; Function that implements the dispatch to the callee function.
define swiftcc void @my_async_function.my_other_async_function_fp.apply(i8* %fnPtr, i8* %async.ctxt, %async.task* %task, %async.actor* %actor) {
%callee = bitcast i8* %fnPtr to void(i8*, %async.task*, %async.actor*)*
tail call swiftcc void %callee(i8* %async.ctxt, %async.task* %task, %async.actor* %actor)
ret void
}
declare void @some_user(i64)
declare void @some_may_write(i64*)
define i8* @__swift_async_resume_project_context(i8* %ctxt) {
entry:
%resume_ctxt_addr = bitcast i8* %ctxt to i8**
%resume_ctxt = load i8*, i8** %resume_ctxt_addr, align 8
ret i8* %resume_ctxt
}
define i8* @resume_context_projection(i8* %ctxt) {
entry:
%resume_ctxt_addr = bitcast i8* %ctxt to i8**
%resume_ctxt = load i8*, i8** %resume_ctxt_addr, align 8
ret i8* %resume_ctxt
}
define swiftcc void @my_async_function(i8* swiftasync %async.ctxt, %async.task* %task, %async.actor* %actor) "coroutine.presplit"="1" !dbg !1 {
entry:
%tmp = alloca { i64, i64 }, align 8
%vector = alloca <4 x double>, align 16
%proj.1 = getelementptr inbounds { i64, i64 }, { i64, i64 }* %tmp, i64 0, i32 0
%proj.2 = getelementptr inbounds { i64, i64 }, { i64, i64 }* %tmp, i64 0, i32 1
%id = call token @llvm.coro.id.async(i32 128, i32 16, i32 0,
i8* bitcast (<{i32, i32}>* @my_async_function_fp to i8*))
%hdl = call i8* @llvm.coro.begin(token %id, i8* null)
store i64 0, i64* %proj.1, align 8
store i64 1, i64* %proj.2, align 8
call void @some_may_write(i64* %proj.1)
; Begin lowering: apply %my_other_async_function(%args...)
; setup callee context
%arg0 = bitcast %async.task* %task to i8*
%arg1 = bitcast <{ i32, i32}>* @my_other_async_function_fp to i8*
%callee_context = call i8* @llvm.coro.async.context.alloc(i8* %arg0, i8* %arg1)
%callee_context.0 = bitcast i8* %callee_context to %async.ctxt*
; store arguments ...
; ... (omitted)
; store the return continuation
%callee_context.return_to_caller.addr = getelementptr inbounds %async.ctxt, %async.ctxt* %callee_context.0, i32 0, i32 1
%return_to_caller.addr = bitcast void(i8*, %async.task*, %async.actor*)** %callee_context.return_to_caller.addr to i8**
%resume.func_ptr = call i8* @llvm.coro.async.resume()
store i8* %resume.func_ptr, i8** %return_to_caller.addr
; store caller context into callee context
%callee_context.caller_context.addr = getelementptr inbounds %async.ctxt, %async.ctxt* %callee_context.0, i32 0, i32 0
store i8* %async.ctxt, i8** %callee_context.caller_context.addr
%resume_proj_fun = bitcast i8*(i8*)* @__swift_async_resume_project_context to i8*
%callee = bitcast void(i8*, %async.task*, %async.actor*)* @asyncSuspend to i8*
%vector_spill = load <4 x double>, <4 x double>* %vector, align 16
%res = call {i8*, i8*, i8*} (i32, i8*, i8*, ...) @llvm.coro.suspend.async(i32 0,
i8* %resume.func_ptr,
i8* %resume_proj_fun,
void (i8*, i8*, %async.task*, %async.actor*)* @my_async_function.my_other_async_function_fp.apply,
i8* %callee, i8* %callee_context, %async.task* %task, %async.actor *%actor), !dbg !5
call void @llvm.coro.async.context.dealloc(i8* %callee_context)
%continuation_task_arg = extractvalue {i8*, i8*, i8*} %res, 1
%task.2 = bitcast i8* %continuation_task_arg to %async.task*
%val = load i64, i64* %proj.1
call void @some_user(i64 %val)
%val.2 = load i64, i64* %proj.2
call void @some_user(i64 %val.2)
store <4 x double> %vector_spill, <4 x double>* %vector, align 16
tail call swiftcc void @asyncReturn(i8* %async.ctxt, %async.task* %task.2, %async.actor* %actor)
call i1 (i8*, i1, ...) @llvm.coro.end.async(i8* %hdl, i1 0)
unreachable
}
define void @my_async_function_pa(i8* %ctxt, %async.task* %task, %async.actor* %actor) {
call void @llvm.coro.async.size.replace(i8* bitcast (<{i32, i32}>* @my_async_function_pa_fp to i8*), i8* bitcast (<{i32, i32}>* @my_async_function_fp to i8*))
call swiftcc void @my_async_function(i8* %ctxt, %async.task* %task, %async.actor* %actor)
ret void
}
; Make sure we update the async function pointer
; CHECK: @my_async_function_fp = constant <{ i32, i32 }> <{ {{.*}}, i32 176 }
; CHECK: @my_async_function_pa_fp = constant <{ i32, i32 }> <{ {{.*}}, i32 176 }
; CHECK: @my_async_function2_fp = constant <{ i32, i32 }> <{ {{.*}}, i32 176 }
; CHECK-LABEL: define swiftcc void @my_async_function(i8* swiftasync %async.ctxt, %async.task* %task, %async.actor* %actor)
; CHECK-O0-LABEL: define swiftcc void @my_async_function(i8* swiftasync %async.ctxt, %async.task* %task, %async.actor* %actor)
; CHECK-SAME: !dbg ![[SP1:[0-9]+]] {
; CHECK: coro.return:
; CHECK: [[FRAMEPTR:%.*]] = getelementptr inbounds i8, i8* %async.ctxt, i64 128
; CHECK: [[ACTOR_SPILL_ADDR:%.*]] = getelementptr inbounds i8, i8* %async.ctxt, i64 152
; CHECK: [[CAST1:%.*]] = bitcast i8* [[ACTOR_SPILL_ADDR]] to %async.actor**
; CHECK: store %async.actor* %actor, %async.actor** [[CAST1]]
; CHECK: [[ADDR1:%.*]] = getelementptr inbounds i8, i8* %async.ctxt, i64 144
; CHECK: [[ASYNC_CTXT_SPILL_ADDR:%.*]] = bitcast i8* [[ADDR1]] to i8**
; CHECK: store i8* %async.ctxt, i8** [[ASYNC_CTXT_SPILL_ADDR]]
; CHECK: [[ALLOCA_PRJ1:%.*]] = bitcast i8* [[FRAMEPTR]] to i64*
; CHECK: [[ALLOCA_PRJ2:%.*]] = getelementptr inbounds i8, i8* %async.ctxt, i64 136
; CHECK: [[ADDR2:%.*]] = bitcast i8* [[ALLOCA_PRJ2]] to i64*
; CHECK: store i64 0, i64* [[ALLOCA_PRJ1]]
; CHECK: store i64 1, i64* [[ADDR2]]
; CHECK: tail call void @some_may_write(i64* nonnull %proj.1)
; CHECK: [[TASK:%.*]] = bitcast %async.task* %task to i8*
; CHECK: [[CALLEE_CTXT:%.*]] = tail call i8* @llvm.coro.async.context.alloc(i8* [[TASK]], i8* bitcast (<{ i32, i32 }>* @my_other_async_function_fp to i8*))
; CHECK: [[CALLEE_CTXT_SPILL:%.*]] = getelementptr inbounds i8, i8* %async.ctxt, i64 160
; CHECK: [[CAST2:%.*]] = bitcast i8* [[CALLEE_CTXT_SPILL]] to i8**
; CHECK: store i8* [[CALLEE_CTXT]], i8** [[CAST2]]
; CHECK: [[TYPED_RETURN_TO_CALLER_ADDR:%.*]] = getelementptr inbounds i8, i8* [[CALLEE_CTXT]], i64 8
; CHECK: [[RETURN_TO_CALLER_ADDR:%.*]] = bitcast i8* [[TYPED_RETURN_TO_CALLER_ADDR]] to i8**
; CHECK: store i8* bitcast (void (i8*, i8*, i8*)* @my_async_functionTQ0_ to i8*), i8** [[RETURN_TO_CALLER_ADDR]]
; CHECK: [[CALLER_CONTEXT_ADDR:%.*]] = bitcast i8* [[CALLEE_CTXT]] to i8**
; CHECK: store i8* %async.ctxt, i8** [[CALLER_CONTEXT_ADDR]]
; Make sure the spill is underaligned to the max context alignment (16).
; CHECK-O0: [[VECTOR_SPILL:%.*]] = load <4 x double>, <4 x double>* {{.*}}
; CHECK-O0: [[VECTOR_SPILL_ADDR:%.*]] = getelementptr inbounds %my_async_function.Frame, %my_async_function.Frame* {{.*}}, i32 0, i32 1
; CHECK-O0: store <4 x double> [[VECTOR_SPILL]], <4 x double>* [[VECTOR_SPILL_ADDR]], align 16
; CHECK: tail call swiftcc void @asyncSuspend(i8* [[CALLEE_CTXT]], %async.task* %task, %async.actor* %actor)
; CHECK: ret void
; CHECK: }
; CHECK-LABEL: define internal swiftcc void @my_async_functionTQ0_(i8* nocapture readonly swiftasync %0, i8* %1, i8* nocapture readnone %2)
; CHECK-O0-LABEL: define internal swiftcc void @my_async_functionTQ0_(i8* swiftasync %0, i8* %1, i8* %2)
; CHECK-SAME: !dbg ![[SP2:[0-9]+]] {
; CHECK: entryresume.0:
; CHECK: [[CALLER_CONTEXT_ADDR:%.*]] = bitcast i8* %0 to i8**
; CHECK: [[CALLER_CONTEXT:%.*]] = load i8*, i8** [[CALLER_CONTEXT_ADDR]]
; CHECK: [[FRAME_PTR:%.*]] = getelementptr inbounds i8, i8* [[CALLER_CONTEXT]], i64 128
; CHECK-O0: [[VECTOR_SPILL_ADDR:%.*]] = getelementptr inbounds %my_async_function.Frame, %my_async_function.Frame* {{.*}}, i32 0, i32 1
; CHECK-O0: load <4 x double>, <4 x double>* [[VECTOR_SPILL_ADDR]], align 16
; CHECK: [[CALLEE_CTXT_SPILL_ADDR:%.*]] = getelementptr inbounds i8, i8* [[CALLER_CONTEXT]], i64 160
; CHECK: [[CAST1:%.*]] = bitcast i8* [[CALLEE_CTXT_SPILL_ADDR]] to i8**
; CHECK: [[CALLEE_CTXT_RELOAD:%.*]] = load i8*, i8** [[CAST1]]
; CHECK: [[ACTOR_RELOAD_ADDR:%.*]] = getelementptr inbounds i8, i8* [[CALLER_CONTEXT]], i64 152
; CHECK: [[CAST2:%.*]] = bitcast i8* [[ACTOR_RELOAD_ADDR]] to %async.actor**
; CHECK: [[ACTOR_RELOAD:%.*]] = load %async.actor*, %async.actor** [[CAST2]]
; CHECK: [[ADDR1:%.*]] = getelementptr inbounds i8, i8* [[CALLER_CONTEXT]], i64 144
; CHECK: [[ASYNC_CTXT_RELOAD_ADDR:%.*]] = bitcast i8* [[ADDR1]] to i8**
; CHECK: [[ASYNC_CTXT_RELOAD:%.*]] = load i8*, i8** [[ASYNC_CTXT_RELOAD_ADDR]]
; CHECK: [[ALLOCA_PRJ2:%.*]] = getelementptr inbounds i8, i8* [[CALLER_CONTEXT]], i64 136
; CHECK: [[ADDR2:%.*]] = bitcast i8* [[ALLOCA_PRJ2]] to i64*
; CHECK: [[ALLOCA_PRJ1:%.*]] = bitcast i8* [[FRAME_PTR]] to i64*
; CHECK: tail call void @llvm.coro.async.context.dealloc(i8* [[CALLEE_CTXT_RELOAD]])
; CHECK: [[TASK_ARG:%.*]] = bitcast i8* %1 to %async.task*
; CHECK: [[VAL1:%.*]] = load i64, i64* [[ALLOCA_PRJ1]]
; CHECK: tail call void @some_user(i64 [[VAL1]])
; CHECK: [[VAL2:%.*]] = load i64, i64* [[ADDR2]]
; CHECK: tail call void @some_user(i64 [[VAL2]])
; CHECK: tail call swiftcc void @asyncReturn(i8* [[ASYNC_CTXT_RELOAD]], %async.task* [[TASK_ARG]], %async.actor* [[ACTOR_RELOAD]])
; CHECK: ret void
; CHECK: }
@my_async_function2_fp = constant <{ i32, i32 }>
<{ i32 trunc ( ; Relative pointer to async function
i64 sub (
i64 ptrtoint (void (%async.task*, %async.actor*, i8*)* @my_async_function2 to i64),
i64 ptrtoint (i32* getelementptr inbounds (<{ i32, i32 }>, <{ i32, i32 }>* @my_async_function2_fp, i32 0, i32 1) to i64)
)
to i32),
i32 128 ; Initial async context size without space for frame
}>
define swiftcc void @my_async_function2(%async.task* %task, %async.actor* %actor, i8* %async.ctxt) "coroutine.presplit"="1" "frame-pointer"="all" !dbg !6 {
entry:
%id = call token @llvm.coro.id.async(i32 128, i32 16, i32 2, i8* bitcast (<{i32, i32}>* @my_async_function2_fp to i8*))
%hdl = call i8* @llvm.coro.begin(token %id, i8* null)
; setup callee context
%arg0 = bitcast %async.task* %task to i8*
%arg1 = bitcast <{ i32, i32}>* @my_other_async_function_fp to i8*
%callee_context = call i8* @llvm.coro.async.context.alloc(i8* %arg0, i8* %arg1)
%callee_context.0 = bitcast i8* %callee_context to %async.ctxt*
%callee_context.return_to_caller.addr = getelementptr inbounds %async.ctxt, %async.ctxt* %callee_context.0, i32 0, i32 1
%return_to_caller.addr = bitcast void(i8*, %async.task*, %async.actor*)** %callee_context.return_to_caller.addr to i8**
%resume.func_ptr = call i8* @llvm.coro.async.resume()
store i8* %resume.func_ptr, i8** %return_to_caller.addr
%callee_context.caller_context.addr = getelementptr inbounds %async.ctxt, %async.ctxt* %callee_context.0, i32 0, i32 0
store i8* %async.ctxt, i8** %callee_context.caller_context.addr
%resume_proj_fun = bitcast i8*(i8*)* @resume_context_projection to i8*
%callee = bitcast void(i8*, %async.task*, %async.actor*)* @asyncSuspend to i8*
%task.casted = bitcast i8* %arg0 to %async.task*
%res = call {i8*, i8*, i8*} (i32, i8*, i8*, ...) @llvm.coro.suspend.async(i32 2,
i8* %resume.func_ptr,
i8* %resume_proj_fun,
void (i8*, i8*, %async.task*, %async.actor*)* @my_async_function.my_other_async_function_fp.apply,
i8* %callee, i8* %callee_context, %async.task* %task.casted, %async.actor *%actor), !dbg !9
%continuation_task_arg = extractvalue {i8*, i8*, i8*} %res, 0
%task.2 = bitcast i8* %continuation_task_arg to %async.task*
%callee_context.0.1 = bitcast i8* %callee_context to %async.ctxt*
%callee_context.return_to_caller.addr.1 = getelementptr inbounds %async.ctxt, %async.ctxt* %callee_context.0.1, i32 0, i32 1
%return_to_caller.addr.1 = bitcast void(i8*, %async.task*, %async.actor*)** %callee_context.return_to_caller.addr.1 to i8**
%resume.func_ptr.1 = call i8* @llvm.coro.async.resume()
store i8* %resume.func_ptr.1, i8** %return_to_caller.addr.1
%callee_context.caller_context.addr.1 = getelementptr inbounds %async.ctxt, %async.ctxt* %callee_context.0.1, i32 0, i32 0
store i8* %async.ctxt, i8** %callee_context.caller_context.addr.1
%resume_proj_fun.2 = bitcast i8*(i8*)* @resume_context_projection to i8*
%callee.2 = bitcast void(i8*, %async.task*, %async.actor*)* @asyncSuspend to i8*
%res.2 = call {i8*, i8*, i8*} (i32, i8*, i8*, ...) @llvm.coro.suspend.async(i32 0,
i8* %resume.func_ptr.1,
i8* %resume_proj_fun.2,
void (i8*, i8*, %async.task*, %async.actor*)* @my_async_function.my_other_async_function_fp.apply,
i8* %callee.2, i8* %callee_context, %async.task* %task.casted, %async.actor *%actor)
call void @llvm.coro.async.context.dealloc(i8* %callee_context)
%continuation_actor_arg = extractvalue {i8*, i8*, i8*} %res.2, 1
%actor.2 = bitcast i8* %continuation_actor_arg to %async.actor*
tail call swiftcc void @asyncReturn(i8* %async.ctxt, %async.task* %task.2, %async.actor* %actor.2)
call i1 @llvm.coro.end(i8* %hdl, i1 0)
unreachable
}
; CHECK-LABEL: define swiftcc void @my_async_function2(%async.task* %task, %async.actor* %actor, i8* %async.ctxt)
; CHECK-SAME: #[[FRAMEPOINTER:[0-9]+]]
; CHECK-SAME: !dbg ![[SP3:[0-9]+]]
; CHECK: store i8* %async.ctxt,
; CHECK: store %async.actor* %actor,
; CHECK: store %async.task* %task,
; CHECK: [[CALLEE_CTXT:%.*]] = tail call i8* @llvm.coro.async.context.alloc(
; CHECK: store i8* [[CALLEE_CTXT]],
; CHECK: store i8* bitcast (void (i8*, i8*, i8*)* @my_async_function2.resume.0 to i8*),
; CHECK: store i8* %async.ctxt,
; CHECK: tail call swiftcc void @asyncSuspend(i8* [[CALLEE_CTXT]], %async.task* %task, %async.actor* %actor)
; CHECK: ret void
; CHECK-LABEL: define internal swiftcc void @my_async_function2.resume.0(i8* %0, i8* nocapture readnone %1, i8* nocapture readonly %2)
; CHECK-SAME: #[[FRAMEPOINTER]]
; CHECK-SAME: !dbg ![[SP4:[0-9]+]]
; CHECK: [[CALLEE_CTXT_ADDR:%.*]] = bitcast i8* %2 to i8**
; CHECK: [[CALLEE_CTXT:%.*]] = load i8*, i8** [[CALLEE_CTXT_ADDR]]
; CHECK: [[CALLEE_CTXT_SPILL_ADDR:%.*]] = getelementptr inbounds i8, i8* [[CALLEE_CTXT]], i64 152
; CHECK: [[CALLEE_CTXT_SPILL_ADDR2:%.*]] = bitcast i8* [[CALLEE_CTXT_SPILL_ADDR]] to i8**
; CHECK: store i8* bitcast (void (i8*, i8*, i8*)* @my_async_function2.resume.1 to i8*),
; CHECK: [[CALLLE_CTXT_RELOAD:%.*]] = load i8*, i8** [[CALLEE_CTXT_SPILL_ADDR2]]
; CHECK: tail call swiftcc void @asyncSuspend(i8* [[CALLEE_CTXT_RELOAD]]
; CHECK: ret void
; CHECK-LABEL: define internal swiftcc void @my_async_function2.resume.1(i8* nocapture readonly %0, i8* %1, i8* nocapture readnone %2)
; CHECK-SAME: #[[FRAMEPOINTER]]
; CHECK: bitcast i8* %0 to i8**
; CHECK: [[ACTOR_ARG:%.*]] = bitcast i8* %1
; CHECK: tail call swiftcc void @asyncReturn({{.*}}[[ACTOR_ARG]])
; CHECK: ret void
define swiftcc void @top_level_caller(i8* %ctxt, i8* %task, i8* %actor) {
%prepare = call i8* @llvm.coro.prepare.async(i8* bitcast (void (i8*, %async.task*, %async.actor*)* @my_async_function to i8*))
%f = bitcast i8* %prepare to void (i8*, i8*, i8*)*
call swiftcc void %f(i8* %ctxt, i8* %task, i8* %actor)
ret void
}
; CHECK-LABEL: define swiftcc void @top_level_caller(i8* %ctxt, i8* %task, i8* %actor)
; CHECK: store i8* bitcast (void (i8*, i8*, i8*)* @my_async_functionTQ0_
; CHECK: store i8* %ctxt
; CHECK: tail call swiftcc void @asyncSuspend
; CHECK: ret void
@dont_crash_on_cf_fp = constant <{ i32, i32 }>
<{ i32 trunc ( ; Relative pointer to async function
i64 sub (
i64 ptrtoint (void (i8*, %async.task*, %async.actor*)* @my_async_function to i64),
i64 ptrtoint (i32* getelementptr inbounds (<{ i32, i32 }>, <{ i32, i32 }>* @my_async_function_fp, i32 0, i32 1) to i64)
)
to i32),
i32 128 ; Initial async context size without space for frame
}>
define swiftcc void @dont_crash_on_cf_dispatch(i8* %fnPtr, i8* %async.ctxt, %async.task* %task, %async.actor* %actor) {
%isNull = icmp eq %async.task* %task, null
br i1 %isNull, label %is_null, label %is_not_null
is_null:
ret void
is_not_null:
%callee = bitcast i8* %fnPtr to void(i8*, %async.task*, %async.actor*)*
tail call swiftcc void %callee(i8* %async.ctxt, %async.task* %task, %async.actor* %actor)
ret void
}
define swiftcc void @dont_crash_on_cf(i8* %async.ctxt, %async.task* %task, %async.actor* %actor) "coroutine.presplit"="1" {
entry:
%id = call token @llvm.coro.id.async(i32 128, i32 16, i32 0,
i8* bitcast (<{i32, i32}>* @dont_crash_on_cf_fp to i8*))
%hdl = call i8* @llvm.coro.begin(token %id, i8* null)
%arg0 = bitcast %async.task* %task to i8*
%arg1 = bitcast <{ i32, i32}>* @my_other_async_function_fp to i8*
%callee_context = call i8* @llvm.coro.async.context.alloc(i8* %arg0, i8* %arg1)
%callee_context.0 = bitcast i8* %callee_context to %async.ctxt*
%callee_context.return_to_caller.addr = getelementptr inbounds %async.ctxt, %async.ctxt* %callee_context.0, i32 0, i32 1
%return_to_caller.addr = bitcast void(i8*, %async.task*, %async.actor*)** %callee_context.return_to_caller.addr to i8**
%resume.func_ptr = call i8* @llvm.coro.async.resume()
store i8* %resume.func_ptr, i8** %return_to_caller.addr
%callee_context.caller_context.addr = getelementptr inbounds %async.ctxt, %async.ctxt* %callee_context.0, i32 0, i32 0
store i8* %async.ctxt, i8** %callee_context.caller_context.addr
%resume_proj_fun = bitcast i8*(i8*)* @resume_context_projection to i8*
%callee = bitcast void(i8*, %async.task*, %async.actor*)* @asyncSuspend to i8*
%res = call {i8*, i8*, i8*} (i32, i8*, i8*, ...) @llvm.coro.suspend.async(i32 0,
i8* %resume.func_ptr,
i8* %resume_proj_fun,
void (i8*, i8*, %async.task*, %async.actor*)* @dont_crash_on_cf_dispatch,
i8* %callee, i8* %callee_context, %async.task* %task, %async.actor *%actor)
call void @llvm.coro.async.context.dealloc(i8* %callee_context)
%continuation_task_arg = extractvalue {i8*, i8*, i8*} %res, 1
%task.2 = bitcast i8* %continuation_task_arg to %async.task*
tail call swiftcc void @asyncReturn(i8* %async.ctxt, %async.task* %task.2, %async.actor* %actor)
call i1 (i8*, i1, ...) @llvm.coro.end.async(i8* %hdl, i1 0)
unreachable
}
@multiple_coro_end_async_fp = constant <{ i32, i32 }>
<{ i32 trunc ( ; Relative pointer to async function
i64 sub (
i64 ptrtoint (void (i8*, %async.task*, %async.actor*)* @multiple_coro_end_async to i64),
i64 ptrtoint (i32* getelementptr inbounds (<{ i32, i32 }>, <{ i32, i32 }>* @multiple_coro_end_async_fp, i32 0, i32 1) to i64)
)
to i32),
i32 128 ; Initial async context size without space for frame
}>
define swiftcc void @must_tail_call_return(i8* %async.ctxt, %async.task* %task, %async.actor* %actor) {
musttail call swiftcc void @asyncReturn(i8* %async.ctxt, %async.task* %task, %async.actor* %actor)
ret void
}
define swiftcc void @multiple_coro_end_async(i8* %async.ctxt, %async.task* %task, %async.actor* %actor) "coroutine.presplit"="1" {
entry:
%id = call token @llvm.coro.id.async(i32 128, i32 16, i32 0,
i8* bitcast (<{i32, i32}>* @dont_crash_on_cf_fp to i8*))
%hdl = call i8* @llvm.coro.begin(token %id, i8* null)
%arg0 = bitcast %async.task* %task to i8*
%arg1 = bitcast <{ i32, i32}>* @my_other_async_function_fp to i8*
%callee_context = call i8* @llvm.coro.async.context.alloc(i8* %arg0, i8* %arg1)
%callee_context.0 = bitcast i8* %callee_context to %async.ctxt*
%callee_context.return_to_caller.addr = getelementptr inbounds %async.ctxt, %async.ctxt* %callee_context.0, i32 0, i32 1
%return_to_caller.addr = bitcast void(i8*, %async.task*, %async.actor*)** %callee_context.return_to_caller.addr to i8**
%resume.func_ptr = call i8* @llvm.coro.async.resume()
store i8* %resume.func_ptr, i8** %return_to_caller.addr
%callee_context.caller_context.addr = getelementptr inbounds %async.ctxt, %async.ctxt* %callee_context.0, i32 0, i32 0
store i8* %async.ctxt, i8** %callee_context.caller_context.addr
%resume_proj_fun = bitcast i8*(i8*)* @resume_context_projection to i8*
%callee = bitcast void(i8*, %async.task*, %async.actor*)* @asyncSuspend to i8*
%res = call {i8*, i8*, i8*} (i32, i8*, i8*, ...) @llvm.coro.suspend.async(i32 0,
i8* %resume.func_ptr,
i8* %resume_proj_fun,
void (i8*, i8*, %async.task*, %async.actor*)* @dont_crash_on_cf_dispatch,
i8* %callee, i8* %callee_context, %async.task* %task, %async.actor *%actor)
call void @llvm.coro.async.context.dealloc(i8* %callee_context)
%continuation_task_arg = extractvalue {i8*, i8*, i8*} %res, 1
%task.2 = bitcast i8* %continuation_task_arg to %async.task*
%eq = icmp eq i8 * %continuation_task_arg, null
br i1 %eq, label %is_equal, label %is_not_equal
is_equal:
tail call swiftcc void @asyncReturn(i8* %async.ctxt, %async.task* %task.2, %async.actor* %actor)
call i1 (i8*, i1, ...) @llvm.coro.end.async(i8* %hdl, i1 0)
unreachable
is_not_equal:
call i1 (i8*, i1, ...) @llvm.coro.end.async(
i8* %hdl, i1 0,
void (i8*, %async.task*, %async.actor*)* @must_tail_call_return,
i8* %async.ctxt, %async.task* %task.2, %async.actor* null)
unreachable
}
; CHECK-LABEL: define internal swiftcc void @multiple_coro_end_async.resume.0(
; CHECK: musttail call swiftcc void @asyncReturn(
; CHECK: ret void
@polymorphic_suspend_return_fp = constant <{ i32, i32 }>
<{ i32 trunc ( ; Relative pointer to async function
i64 sub (
i64 ptrtoint (void (i8*, %async.task*, %async.actor*)* @polymorphic_suspend_return to i64),
i64 ptrtoint (i32* getelementptr inbounds (<{ i32, i32 }>, <{ i32, i32 }>* @polymorphic_suspend_return_fp, i32 0, i32 1) to i64)
)
to i32),
i32 64 ; Initial async context size without space for frame
}>
define swiftcc void @polymorphic_suspend_return(i8* swiftasync %async.ctxt, %async.task* %task, %async.actor* %actor) "coroutine.presplit"="1" {
entry:
%tmp = alloca { i64, i64 }, align 8
%proj.1 = getelementptr inbounds { i64, i64 }, { i64, i64 }* %tmp, i64 0, i32 0
%proj.2 = getelementptr inbounds { i64, i64 }, { i64, i64 }* %tmp, i64 0, i32 1
%id = call token @llvm.coro.id.async(i32 128, i32 16, i32 0,
i8* bitcast (<{i32, i32}>* @polymorphic_suspend_return_fp to i8*))
%hdl = call i8* @llvm.coro.begin(token %id, i8* null)
store i64 0, i64* %proj.1, align 8
store i64 1, i64* %proj.2, align 8
call void @some_may_write(i64* %proj.1)
; Begin lowering: apply %my_other_async_function(%args...)
; setup callee context
%arg0 = bitcast %async.task* %task to i8*
%arg1 = bitcast <{ i32, i32}>* @my_other_async_function_fp to i8*
%callee_context = call i8* @llvm.coro.async.context.alloc(i8* %arg0, i8* %arg1)
%callee_context.0 = bitcast i8* %callee_context to %async.ctxt*
; store arguments ...
; ... (omitted)
; store the return continuation
%callee_context.return_to_caller.addr = getelementptr inbounds %async.ctxt, %async.ctxt* %callee_context.0, i32 0, i32 1
%return_to_caller.addr = bitcast void(i8*, %async.task*, %async.actor*)** %callee_context.return_to_caller.addr to i8**
%resume.func_ptr = call i8* @llvm.coro.async.resume()
store i8* %resume.func_ptr, i8** %return_to_caller.addr
; store caller context into callee context
%callee_context.caller_context.addr = getelementptr inbounds %async.ctxt, %async.ctxt* %callee_context.0, i32 0, i32 0
store i8* %async.ctxt, i8** %callee_context.caller_context.addr
%resume_proj_fun = bitcast i8*(i8*)* @resume_context_projection to i8*
%callee = bitcast void(i8*, %async.task*, %async.actor*)* @asyncSuspend to i8*
%res = call {i8*, i8*, i8*, i8*} (i32, i8*, i8*, ...)
@llvm.coro.suspend.async.sl_p0i8p0i8p0i8p0i8s(i32 256, ;; swiftasync at 0 and swiftself at 1 in resume function
i8* %resume.func_ptr,
i8* %resume_proj_fun,
void (i8*, i8*, %async.task*, %async.actor*)* @my_async_function.my_other_async_function_fp.apply,
i8* %callee, i8* %callee_context, %async.task* %task, %async.actor *%actor)
call void @llvm.coro.async.context.dealloc(i8* %callee_context)
%continuation_task_arg = extractvalue {i8*, i8*, i8*, i8*} %res, 3
%task.2 = bitcast i8* %continuation_task_arg to %async.task*
%val = load i64, i64* %proj.1
call void @some_user(i64 %val)
%val.2 = load i64, i64* %proj.2
call void @some_user(i64 %val.2)
tail call swiftcc void @asyncReturn(i8* %async.ctxt, %async.task* %task.2, %async.actor* %actor)
call i1 (i8*, i1, ...) @llvm.coro.end.async(i8* %hdl, i1 0)
unreachable
}
; CHECK-LABEL: define swiftcc void @polymorphic_suspend_return(i8* swiftasync %async.ctxt, %async.task* %task, %async.actor* %actor)
; CHECK-LABEL: define internal swiftcc void @polymorphic_suspend_return.resume.0(i8* {{.*}}swiftasync{{.*}} %0, i8* {{.*}}swiftself{{.*}} %1, i8* {{.*}}%2, i8* {{.*}}%3)
; CHECK: bitcast i8* %3 to %async.task*
; CHECK: }
@no_coro_suspend_fp = constant <{ i32, i32 }>
<{ i32 trunc ( ; Relative pointer to async function
i64 sub (
i64 ptrtoint (void (i8*)* @no_coro_suspend to i64),
i64 ptrtoint (i32* getelementptr inbounds (<{ i32, i32 }>, <{ i32, i32 }>* @no_coro_suspend_fp, i32 0, i32 1) to i64)
)
to i32),
i32 128 ; Initial async context size without space for frame
}>
define swiftcc void @no_coro_suspend(i8* %async.ctx) "coroutine.presplit"="1" {
entry:
%some_alloca = alloca i64
%id = call token @llvm.coro.id.async(i32 128, i32 16, i32 0,
i8* bitcast (<{i32, i32}>* @no_coro_suspend_fp to i8*))
%hdl = call i8* @llvm.coro.begin(token %id, i8* null)
call void @some_may_write(i64* %some_alloca)
call i1 (i8*, i1, ...) @llvm.coro.end.async(i8* %hdl, i1 0)
unreachable
}
; CHECK-LABEL: define swiftcc void @no_coro_suspend
; CHECK: [[ALLOCA:%.*]] = alloca i64
; CHECK: call void @some_may_write(i64* {{.*}}[[ALLOCA]])
@no_coro_suspend_swifterror_fp = constant <{ i32, i32 }>
<{ i32 trunc ( ; Relative pointer to async function
i64 sub (
i64 ptrtoint (void (i8*)* @no_coro_suspend_swifterror to i64),
i64 ptrtoint (i32* getelementptr inbounds (<{ i32, i32 }>, <{ i32, i32 }>* @no_coro_suspend_swifterror_fp, i32 0, i32 1) to i64)
)
to i32),
i32 128 ; Initial async context size without space for frame
}>
declare void @do_with_swifterror(i64** swifterror)
define swiftcc void @no_coro_suspend_swifterror(i8* %async.ctx) "coroutine.presplit"="1" {
entry:
%some_alloca = alloca swifterror i64*
%id = call token @llvm.coro.id.async(i32 128, i32 16, i32 0,
i8* bitcast (<{i32, i32}>* @no_coro_suspend_swifterror_fp to i8*))
%hdl = call i8* @llvm.coro.begin(token %id, i8* null)
store i64* null, i64** %some_alloca, align 8
call void @do_with_swifterror(i64** swifterror %some_alloca)
call i1 (i8*, i1, ...) @llvm.coro.end.async(i8* %hdl, i1 0)
unreachable
}
; CHECK-LABEL: define swiftcc void @no_coro_suspend_swifterror
; CHECK: [[ALLOCA:%.*]] = alloca swifterror i64*
; CHECK: store i64* null, i64** [[ALLOCA]]
; CHECK: call void @do_with_swifterror(i64** {{.*}}swifterror{{.*}} [[ALLOCA]])
@undefined_coro_async_resume_fp = constant <{ i32, i32 }>
<{ i32 trunc (
i64 sub (
i64 ptrtoint (void (i8*)* @undefined_coro_async_resume to i64),
i64 ptrtoint (i32* getelementptr inbounds (<{ i32, i32 }>, <{ i32, i32 }>* @undefined_coro_async_resume_fp, i32 0, i32 1) to i64)
)
to i32),
i32 24
}>
declare void @crash()
declare void @use(i8*)
define swiftcc void @undefined_coro_async_resume(i8 *%async.ctx) "coroutine.presplit"="1" {
entry:
%id = call token @llvm.coro.id.async(i32 24, i32 16, i32 0, i8* bitcast (<{i32, i32}>* @undefined_coro_async_resume_fp to i8*))
%hdl = call i8* @llvm.coro.begin(token %id, i8* null)
%undefined_resume_pointer = call i8* @llvm.coro.async.resume()
call void @use(i8* %undefined_resume_pointer)
call void @crash()
%unused = call i1 (i8*, i1, ...) @llvm.coro.end.async(i8* %hdl, i1 false)
unreachable
}
; CHECK-LABEL: define swiftcc void @undefined_coro_async_resume
; CHECK-NOT: @llvm.coro.async.resume
; CHECK: call void @use(i8* null)
; CHECK: unreachable
declare { i8*, i8*, i8*, i8* } @llvm.coro.suspend.async.sl_p0i8p0i8p0i8p0i8s(i32, i8*, i8*, ...)
declare i8* @llvm.coro.prepare.async(i8*)
declare token @llvm.coro.id.async(i32, i32, i32, i8*)
declare i8* @llvm.coro.begin(token, i8*)
declare i1 @llvm.coro.end.async(i8*, i1, ...)
declare i1 @llvm.coro.end(i8*, i1)
declare {i8*, i8*, i8*} @llvm.coro.suspend.async(i32, i8*, i8*, ...)
declare i8* @llvm.coro.async.context.alloc(i8*, i8*)
declare void @llvm.coro.async.context.dealloc(i8*)
declare swiftcc void @asyncReturn(i8*, %async.task*, %async.actor*)
declare swiftcc void @asyncSuspend(i8*, %async.task*, %async.actor*)
declare i8* @llvm.coro.async.resume()
declare void @llvm.coro.async.size.replace(i8*, i8*)
declare i8* @hide(i8*)
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!0}
!0 = !{i32 2, !"Debug Info Version", i32 3}
; CHECK: ![[SP1]] = distinct !DISubprogram(name: "my_async_function",
; CHECK-SAME: linkageName: "my_async_function",
; CHECK-SAME: scopeLine: 1
!1 = distinct !DISubprogram(name: "my_async_function",
linkageName: "my_async_function",
scope: !2, file: !3, line: 1, type: !4,
scopeLine: 1, spFlags: DISPFlagDefinition, unit: !2)
; CHECK: ![[SP2]] = distinct !DISubprogram(name: "my_async_function",
; CHECK-SAME: linkageName: "my_async_functionTQ0_",
; CHECK-SAME: scopeLine: 2
!2 = distinct !DICompileUnit(language: DW_LANG_Swift, file: !3, emissionKind: FullDebug)
!3 = !DIFile(filename: "/tmp/1.swift", directory: "/")
!4 = !DISubroutineType(types: !{})
!5 = !DILocation(line: 2, column: 0, scope: !1)
; CHECK: ![[SP3]] = distinct !DISubprogram(name: "my_async_function2",
; CHECK-SAME: linkageName: "my_async_function2",
; CHECK-SAME: scopeLine: 1
!6 = distinct !DISubprogram(name: "my_async_function2",
linkageName: "my_async_function2",
scope: !2, file: !3, line: 1, type: !4,
scopeLine: 1, spFlags: DISPFlagDefinition, unit: !2)
; CHECK: ![[SP4]] = distinct !DISubprogram(name: "my_async_function2",
; CHECK-SAME: linkageName: "my_async_function2.resume.0",
; CHECK-SAME: scopeLine: 1
!7 = !DILexicalBlockFile(scope: !6, file: !8, discriminator: 0)
!8 = !DIFile(filename: "/tmp/fake.cpp", directory: "/")
!9 = !DILocation(line: 2, column: 0, scope: !7)