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
|
// RUN: mlir-opt %s -split-input-file -async-to-async-runtime \
// RUN: | FileCheck %s --dump-input=always
// CHECK-LABEL: @execute_no_async_args
func @execute_no_async_args(%arg0: f32, %arg1: memref<1xf32>) {
%token = async.execute {
%c0 = constant 0 : index
memref.store %arg0, %arg1[%c0] : memref<1xf32>
async.yield
}
async.await %token : !async.token
return
}
// Function outlined from the async.execute operation.
// CHECK-LABEL: func private @async_execute_fn
// CHECK-SAME: -> !async.token
// Create token for return op, and mark a function as a coroutine.
// CHECK: %[[TOKEN:.*]] = async.runtime.create : !async.token
// CHECK: %[[ID:.*]] = async.coro.id
// CHECK: %[[HDL:.*]] = async.coro.begin
// Pass a suspended coroutine to the async runtime.
// CHECK: %[[SAVED:.*]] = async.coro.save %[[HDL]]
// CHECK: async.runtime.resume %[[HDL]]
// CHECK: async.coro.suspend %[[SAVED]]
// CHECK-SAME: ^[[SUSPEND:.*]], ^[[RESUME:.*]], ^[[CLEANUP:.*]]
// Resume coroutine after suspension.
// CHECK: ^[[RESUME]]:
// CHECK: memref.store
// CHECK: async.runtime.set_available %[[TOKEN]]
// Delete coroutine.
// CHECK: ^[[CLEANUP]]:
// CHECK: async.coro.free %[[ID]], %[[HDL]]
// Suspend coroutine, and also a return statement for ramp function.
// CHECK: ^[[SUSPEND]]:
// CHECK: async.coro.end %[[HDL]]
// CHECK: return %[[TOKEN]]
// -----
// CHECK-LABEL: @nested_async_execute
func @nested_async_execute(%arg0: f32, %arg1: f32, %arg2: memref<1xf32>) {
// CHECK: %[[TOKEN:.*]] = call @async_execute_fn_0(%arg0, %arg2, %arg1)
%token0 = async.execute {
%c0 = constant 0 : index
%token1 = async.execute {
%c1 = constant 1: index
memref.store %arg0, %arg2[%c0] : memref<1xf32>
async.yield
}
async.await %token1 : !async.token
memref.store %arg1, %arg2[%c0] : memref<1xf32>
async.yield
}
// CHECK: async.runtime.await %[[TOKEN]]
// CHECK-NEXT: return
async.await %token0 : !async.token
return
}
// Function outlined from the inner async.execute operation.
// CHECK-LABEL: func private @async_execute_fn
// CHECK-SAME: -> !async.token
// CHECK: %[[TOKEN:.*]] = async.runtime.create : !async.token
// CHECK: %[[ID:.*]] = async.coro.id
// CHECK: %[[HDL:.*]] = async.coro.begin
// CHECK: async.runtime.resume %[[HDL]]
// CHECK: async.coro.suspend
// CHECK-SAME: ^[[SUSPEND:.*]], ^[[RESUME:.*]], ^[[CLEANUP:.*]]
// CHECK: ^[[RESUME]]:
// CHECK: memref.store
// CHECK: async.runtime.set_available %[[TOKEN]]
// Function outlined from the outer async.execute operation.
// CHECK-LABEL: func private @async_execute_fn_0
// CHECK-SAME: -> !async.token
// CHECK: %[[TOKEN:.*]] = async.runtime.create : !async.token
// CHECK: %[[ID:.*]] = async.coro.id
// CHECK: %[[HDL:.*]] = async.coro.begin
// Suspend coroutine in the beginning.
// CHECK: async.runtime.resume %[[HDL]]
// CHECK: async.coro.suspend
// CHECK-SAME: ^[[SUSPEND:.*]], ^[[RESUME_0:.*]], ^[[CLEANUP:.*]]
// Suspend coroutine second time waiting for the completion of inner execute op.
// CHECK: ^[[RESUME_0]]:
// CHECK: %[[INNER_TOKEN:.*]] = call @async_execute_fn
// CHECK: %[[SAVED:.*]] = async.coro.save %[[HDL]]
// CHECK: async.runtime.await_and_resume %[[INNER_TOKEN]], %[[HDL]]
// CHECK: async.coro.suspend %[[SAVED]]
// CHECK-SAME: ^[[SUSPEND]], ^[[RESUME_1:.*]], ^[[CLEANUP]]
// Check the error of the awaited token after resumption.
// CHECK: ^[[RESUME_1]]:
// CHECK: %[[ERR:.*]] = async.runtime.is_error %[[INNER_TOKEN]]
// CHECK: cond_br %[[ERR]], ^[[SET_ERROR:.*]], ^[[CONTINUATION:.*]]
// Set token available if the token is not in the error state.
// CHECK: ^[[CONTINUATION:.*]]:
// CHECK: memref.store
// CHECK: async.runtime.set_available %[[TOKEN]]
// CHECK: ^[[SET_ERROR]]:
// CHECK: ^[[CLEANUP]]:
// CHECK: ^[[SUSPEND]]:
// -----
// CHECK-LABEL: @async_execute_token_dependency
func @async_execute_token_dependency(%arg0: f32, %arg1: memref<1xf32>) {
// CHECK: %[[TOKEN:.*]] = call @async_execute_fn
%token = async.execute {
%c0 = constant 0 : index
memref.store %arg0, %arg1[%c0] : memref<1xf32>
async.yield
}
// CHECK: call @async_execute_fn_0(%[[TOKEN]], %arg0, %arg1)
%token_0 = async.execute [%token] {
%c0 = constant 0 : index
memref.store %arg0, %arg1[%c0] : memref<1xf32>
async.yield
}
return
}
// Function outlined from the first async.execute operation.
// CHECK-LABEL: func private @async_execute_fn
// CHECK-SAME: -> !async.token
// CHECK: %[[TOKEN:.*]] = async.runtime.create : !async.token
// CHECK: return %[[TOKEN]] : !async.token
// Function outlined from the second async.execute operation with dependency.
// CHECK-LABEL: func private @async_execute_fn_0
// CHECK-SAME: %[[ARG0:.*]]: !async.token
// CHECK-SAME: %[[ARG1:.*]]: f32
// CHECK-SAME: %[[ARG2:.*]]: memref<1xf32>
// CHECK-SAME: -> !async.token
// CHECK: %[[TOKEN:.*]] = async.runtime.create : !async.token
// CHECK: %[[HDL:.*]] = async.coro.begin
// Suspend coroutine in the beginning.
// CHECK: async.runtime.resume %[[HDL]]
// CHECK: async.coro.suspend
// CHECK-SAME: ^[[SUSPEND:.*]], ^[[RESUME_0:.*]], ^[[CLEANUP:.*]]
// Suspend coroutine second time waiting for the completion of token dependency.
// CHECK: ^[[RESUME_0]]:
// CHECK: %[[SAVED:.*]] = async.coro.save %[[HDL]]
// CHECK: async.runtime.await_and_resume %[[ARG0]], %[[HDL]]
// CHECK: async.coro.suspend %[[SAVED]]
// CHECK-SAME: ^[[SUSPEND]], ^[[RESUME_1:.*]], ^[[CLEANUP]]
// Check the error of the awaited token after resumption.
// CHECK: ^[[RESUME_1]]:
// CHECK: %[[ERR:.*]] = async.runtime.is_error %[[ARG0]]
// CHECK: cond_br %[[ERR]], ^[[SET_ERROR:.*]], ^[[CONTINUATION:.*]]
// Emplace result token after second resumption and error checking.
// CHECK: ^[[CONTINUATION:.*]]:
// CHECK: memref.store
// CHECK: async.runtime.set_available %[[TOKEN]]
// CHECK: ^[[CLEANUP]]:
// CHECK: ^[[SUSPEND]]:
// -----
// CHECK-LABEL: @async_group_await_all
func @async_group_await_all(%arg0: f32, %arg1: memref<1xf32>) {
// CHECK: %[[C:.*]] = constant 1 : index
%c = constant 1 : index
// CHECK: %[[GROUP:.*]] = async.runtime.create_group %[[C]] : !async.group
%0 = async.create_group %c : !async.group
// CHECK: %[[TOKEN:.*]] = call @async_execute_fn
%token = async.execute { async.yield }
// CHECK: async.runtime.add_to_group %[[TOKEN]], %[[GROUP]]
async.add_to_group %token, %0 : !async.token
// CHECK: call @async_execute_fn_0
async.execute {
async.await_all %0
async.yield
}
// CHECK: async.runtime.await %[[GROUP]] : !async.group
async.await_all %0
return
}
// Function outlined from the second async.execute operation.
// CHECK-LABEL: func private @async_execute_fn_0
// CHECK-SAME: (%[[ARG:.*]]: !async.group) -> !async.token
// CHECK: %[[TOKEN:.*]] = async.runtime.create : !async.token
// CHECK: %[[HDL:.*]] = async.coro.begin
// Suspend coroutine in the beginning.
// CHECK: async.runtime.resume %[[HDL]]
// CHECK: async.coro.suspend
// CHECK-SAME: ^[[SUSPEND:.*]], ^[[RESUME_0:.*]], ^[[CLEANUP:.*]]
// Suspend coroutine second time waiting for the group.
// CHECK: ^[[RESUME_0]]:
// CHECK: async.runtime.await_and_resume %[[ARG]], %[[HDL]]
// CHECK: async.coro.suspend
// CHECK-SAME: ^[[SUSPEND]], ^[[RESUME_1:.*]], ^[[CLEANUP]]
// Check the error of the awaited token after resumption.
// CHECK: ^[[RESUME_1]]:
// CHECK: %[[ERR:.*]] = async.runtime.is_error %[[ARG]]
// CHECK: cond_br %[[ERR]], ^[[SET_ERROR:.*]], ^[[CONTINUATION:.*]]
// Emplace result token after error checking.
// CHECK: ^[[CONTINUATION:.*]]:
// CHECK: async.runtime.set_available %[[TOKEN]]
// CHECK: ^[[CLEANUP]]:
// CHECK: ^[[SUSPEND]]:
// -----
// CHECK-LABEL: @execute_and_return_f32
func @execute_and_return_f32() -> f32 {
// CHECK: %[[RET:.*]]:2 = call @async_execute_fn
%token, %result = async.execute -> !async.value<f32> {
%c0 = constant 123.0 : f32
async.yield %c0 : f32
}
// CHECK: async.runtime.await %[[RET]]#1 : !async.value<f32>
// CHECK: %[[VALUE:.*]] = async.runtime.load %[[RET]]#1 : !async.value<f32>
%0 = async.await %result : !async.value<f32>
// CHECK: return %[[VALUE]]
return %0 : f32
}
// Function outlined from the async.execute operation.
// CHECK-LABEL: func private @async_execute_fn()
// CHECK: %[[TOKEN:.*]] = async.runtime.create : !async.token
// CHECK: %[[VALUE:.*]] = async.runtime.create : !async.value<f32>
// CHECK: %[[HDL:.*]] = async.coro.begin
// Suspend coroutine in the beginning.
// CHECK: async.runtime.resume %[[HDL]]
// CHECK: async.coro.suspend
// CHECK-SAME: ^[[SUSPEND:.*]], ^[[RESUME:.*]], ^[[CLEANUP:.*]]
// Emplace result value.
// CHECK: ^[[RESUME]]:
// CHECK: %[[CST:.*]] = constant 1.230000e+02 : f32
// CHECK: async.runtime.store %cst, %[[VALUE]]
// CHECK: async.runtime.set_available %[[VALUE]]
// CHECK: async.runtime.set_available %[[TOKEN]]
// CHECK: ^[[CLEANUP]]:
// CHECK: ^[[SUSPEND]]:
// -----
// CHECK-LABEL: @async_value_operands
func @async_value_operands() {
// CHECK: %[[RET:.*]]:2 = call @async_execute_fn
%token, %result = async.execute -> !async.value<f32> {
%c0 = constant 123.0 : f32
async.yield %c0 : f32
}
// CHECK: %[[TOKEN:.*]] = call @async_execute_fn_0(%[[RET]]#1)
%token0 = async.execute(%result as %value: !async.value<f32>) {
%0 = addf %value, %value : f32
async.yield
}
// CHECK: async.runtime.await %[[TOKEN]] : !async.token
async.await %token0 : !async.token
return
}
// Function outlined from the first async.execute operation.
// CHECK-LABEL: func private @async_execute_fn()
// Function outlined from the second async.execute operation.
// CHECK-LABEL: func private @async_execute_fn_0
// CHECK-SAME: (%[[ARG:.*]]: !async.value<f32>) -> !async.token
// CHECK: %[[TOKEN:.*]] = async.runtime.create : !async.token
// CHECK: %[[HDL:.*]] = async.coro.begin
// Suspend coroutine in the beginning.
// CHECK: async.runtime.resume %[[HDL]]
// CHECK: async.coro.suspend
// CHECK-SAME: ^[[SUSPEND:.*]], ^[[RESUME_0:.*]], ^[[CLEANUP:.*]]
// Suspend coroutine second time waiting for the async operand.
// CHECK: ^[[RESUME_0]]:
// CHECK: async.runtime.await_and_resume %[[ARG]], %[[HDL]]
// CHECK: async.coro.suspend
// CHECK-SAME: ^[[SUSPEND]], ^[[RESUME_1:.*]], ^[[CLEANUP]]
// Check the error of the awaited token after resumption.
// CHECK: ^[[RESUME_1]]:
// CHECK: %[[ERR:.*]] = async.runtime.is_error %[[ARG]]
// CHECK: cond_br %[[ERR]], ^[[SET_ERROR:.*]], ^[[CONTINUATION:.*]]
// // Load from the async.value argument after error checking.
// CHECK: ^[[CONTINUATION:.*]]:
// CHECK: %[[LOADED:.*]] = async.runtime.load %[[ARG]] : !async.value<f32
// CHECK: addf %[[LOADED]], %[[LOADED]] : f32
// CHECK: async.runtime.set_available %[[TOKEN]]
// CHECK: ^[[CLEANUP]]:
// CHECK: ^[[SUSPEND]]:
// -----
// CHECK-LABEL: @execute_asserttion
func @execute_asserttion(%arg0: i1) {
%token = async.execute {
assert %arg0, "error"
async.yield
}
async.await %token : !async.token
return
}
// Function outlined from the async.execute operation.
// CHECK-LABEL: func private @async_execute_fn(
// CHECK-SAME: %[[ARG0:.*]]: i1
// CHECK-SAME: -> !async.token
// Create token for return op, and mark a function as a coroutine.
// CHECK: %[[TOKEN:.*]] = async.runtime.create : !async.token
// CHECK: %[[ID:.*]] = async.coro.id
// CHECK: %[[HDL:.*]] = async.coro.begin
// Initial coroutine suspension.
// CHECK: async.coro.suspend
// CHECK-SAME: ^[[SUSPEND:.*]], ^[[RESUME:.*]], ^[[CLEANUP:.*]]
// Resume coroutine after suspension.
// CHECK: ^[[RESUME]]:
// CHECK: cond_br %[[ARG0]], ^[[SET_AVAILABLE:.*]], ^[[SET_ERROR:.*]]
// Set coroutine completion token to available state.
// CHECK: ^[[SET_AVAILABLE]]:
// CHECK: async.runtime.set_available %[[TOKEN]]
// CHECK: br ^[[CLEANUP]]
// Set coroutine completion token to error state.
// CHECK: ^[[SET_ERROR]]:
// CHECK: async.runtime.set_error %[[TOKEN]]
// CHECK: br ^[[CLEANUP]]
// Delete coroutine.
// CHECK: ^[[CLEANUP]]:
// CHECK: async.coro.free %[[ID]], %[[HDL]]
// Suspend coroutine, and also a return statement for ramp function.
// CHECK: ^[[SUSPEND]]:
// CHECK: async.coro.end %[[HDL]]
// CHECK: return %[[TOKEN]]
// -----
// Structured control flow operations with async operations in the body must be
// lowered to branch-based control flow to enable coroutine CFG rewrite.
// CHECK-LABEL: @lower_scf_to_cfg
func @lower_scf_to_cfg(%arg0: f32, %arg1: memref<1xf32>, %arg2: i1) {
%token0 = async.execute { async.yield }
%token1 = async.execute {
scf.if %arg2 {
async.await %token0 : !async.token
} else {
async.await %token0 : !async.token
}
async.yield
}
return
}
// Function outlined from the first async.execute operation.
// CHECK-LABEL: func private @async_execute_fn(
// CHECK-SAME: -> !async.token
// Function outlined from the second async.execute operation.
// CHECK-LABEL: func private @async_execute_fn_0(
// CHECK: %[[TOKEN:.*]]: !async.token
// CHECK: %[[FLAG:.*]]: i1
// CHECK-SAME: -> !async.token
// Check that structured control flow lowered to CFG.
// CHECK-NOT: scf.if
// CHECK: cond_br %[[FLAG]]
|
