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Side by Side Diff: test/cctest/compiler/test-graph-reducer.cc

Issue 726513002: [turbofan] Smartify the GraphReducer. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: REBASE Created 6 years, 1 month ago
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1 // Copyright 2014 the V8 project authors. All rights reserved. 1 // Copyright 2014 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "src/v8.h" 5 #include "src/v8.h"
6 6
7 #include "graph-tester.h" 7 #include "graph-tester.h"
8 #include "src/compiler/generic-node-inl.h" 8 #include "src/compiler/generic-node-inl.h"
9 #include "src/compiler/graph-reducer.h" 9 #include "src/compiler/graph-reducer.h"
10 10
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195 }; 195 };
196 196
197 197
198 TEST(ReduceGraphFromEnd1) { 198 TEST(ReduceGraphFromEnd1) {
199 GraphTester graph; 199 GraphTester graph;
200 200
201 Node* n1 = graph.NewNode(&OPA0); 201 Node* n1 = graph.NewNode(&OPA0);
202 Node* end = graph.NewNode(&OPA1, n1); 202 Node* end = graph.NewNode(&OPA1, n1);
203 graph.SetEnd(end); 203 graph.SetEnd(end);
204 204
205 GraphReducer reducer(&graph); 205 GraphReducer reducer(&graph, graph.zone());
206 ReducerRecorder recorder(graph.zone()); 206 ReducerRecorder recorder(graph.zone());
207 reducer.AddReducer(&recorder); 207 reducer.AddReducer(&recorder);
208 reducer.ReduceGraph(); 208 reducer.ReduceGraph();
209 recorder.CheckContains(n1); 209 recorder.CheckContains(n1);
210 recorder.CheckContains(end); 210 recorder.CheckContains(end);
211 } 211 }
212 212
213 213
214 TEST(ReduceGraphFromEnd2) { 214 TEST(ReduceGraphFromEnd2) {
215 GraphTester graph; 215 GraphTester graph;
216 216
217 Node* n1 = graph.NewNode(&OPA0); 217 Node* n1 = graph.NewNode(&OPA0);
218 Node* n2 = graph.NewNode(&OPA1, n1); 218 Node* n2 = graph.NewNode(&OPA1, n1);
219 Node* n3 = graph.NewNode(&OPA1, n1); 219 Node* n3 = graph.NewNode(&OPA1, n1);
220 Node* end = graph.NewNode(&OPA2, n2, n3); 220 Node* end = graph.NewNode(&OPA2, n2, n3);
221 graph.SetEnd(end); 221 graph.SetEnd(end);
222 222
223 GraphReducer reducer(&graph); 223 GraphReducer reducer(&graph, graph.zone());
224 ReducerRecorder recorder(graph.zone()); 224 ReducerRecorder recorder(graph.zone());
225 reducer.AddReducer(&recorder); 225 reducer.AddReducer(&recorder);
226 reducer.ReduceGraph(); 226 reducer.ReduceGraph();
227 recorder.CheckContains(n1); 227 recorder.CheckContains(n1);
228 recorder.CheckContains(n2); 228 recorder.CheckContains(n2);
229 recorder.CheckContains(n3); 229 recorder.CheckContains(n3);
230 recorder.CheckContains(end); 230 recorder.CheckContains(end);
231 } 231 }
232 232
233 233
234 TEST(ReduceInPlace1) { 234 TEST(ReduceInPlace1) {
235 GraphTester graph; 235 GraphTester graph;
236 236
237 Node* n1 = graph.NewNode(&OPA0); 237 Node* n1 = graph.NewNode(&OPA0);
238 Node* end = graph.NewNode(&OPA1, n1); 238 Node* end = graph.NewNode(&OPA1, n1);
239 graph.SetEnd(end); 239 graph.SetEnd(end);
240 240
241 GraphReducer reducer(&graph); 241 GraphReducer reducer(&graph, graph.zone());
242 InPlaceABReducer r; 242 InPlaceABReducer r;
243 reducer.AddReducer(&r); 243 reducer.AddReducer(&r);
244 244
245 // Tests A* => B* with in-place updates. 245 // Tests A* => B* with in-place updates.
246 for (int i = 0; i < 3; i++) { 246 for (int i = 0; i < 3; i++) {
247 int before = graph.NodeCount(); 247 int before = graph.NodeCount();
248 reducer.ReduceGraph(); 248 reducer.ReduceGraph();
249 CHECK_EQ(before, graph.NodeCount()); 249 CHECK_EQ(before, graph.NodeCount());
250 CHECK_EQ(&OPB0, n1->op()); 250 CHECK_EQ(&OPB0, n1->op());
251 CHECK_EQ(&OPB1, end->op()); 251 CHECK_EQ(&OPB1, end->op());
252 CHECK_EQ(n1, end->InputAt(0)); 252 CHECK_EQ(n1, end->InputAt(0));
253 } 253 }
254 } 254 }
255 255
256 256
257 TEST(ReduceInPlace2) { 257 TEST(ReduceInPlace2) {
258 GraphTester graph; 258 GraphTester graph;
259 259
260 Node* n1 = graph.NewNode(&OPA0); 260 Node* n1 = graph.NewNode(&OPA0);
261 Node* n2 = graph.NewNode(&OPA1, n1); 261 Node* n2 = graph.NewNode(&OPA1, n1);
262 Node* n3 = graph.NewNode(&OPA1, n1); 262 Node* n3 = graph.NewNode(&OPA1, n1);
263 Node* end = graph.NewNode(&OPA2, n2, n3); 263 Node* end = graph.NewNode(&OPA2, n2, n3);
264 graph.SetEnd(end); 264 graph.SetEnd(end);
265 265
266 GraphReducer reducer(&graph); 266 GraphReducer reducer(&graph, graph.zone());
267 InPlaceABReducer r; 267 InPlaceABReducer r;
268 reducer.AddReducer(&r); 268 reducer.AddReducer(&r);
269 269
270 // Tests A* => B* with in-place updates. 270 // Tests A* => B* with in-place updates.
271 for (int i = 0; i < 3; i++) { 271 for (int i = 0; i < 3; i++) {
272 int before = graph.NodeCount(); 272 int before = graph.NodeCount();
273 reducer.ReduceGraph(); 273 reducer.ReduceGraph();
274 CHECK_EQ(before, graph.NodeCount()); 274 CHECK_EQ(before, graph.NodeCount());
275 CHECK_EQ(&OPB0, n1->op()); 275 CHECK_EQ(&OPB0, n1->op());
276 CHECK_EQ(&OPB1, n2->op()); 276 CHECK_EQ(&OPB1, n2->op());
277 CHECK_EQ(n1, n2->InputAt(0)); 277 CHECK_EQ(n1, n2->InputAt(0));
278 CHECK_EQ(&OPB1, n3->op()); 278 CHECK_EQ(&OPB1, n3->op());
279 CHECK_EQ(n1, n3->InputAt(0)); 279 CHECK_EQ(n1, n3->InputAt(0));
280 CHECK_EQ(&OPB2, end->op()); 280 CHECK_EQ(&OPB2, end->op());
281 CHECK_EQ(n2, end->InputAt(0)); 281 CHECK_EQ(n2, end->InputAt(0));
282 CHECK_EQ(n3, end->InputAt(1)); 282 CHECK_EQ(n3, end->InputAt(1));
283 } 283 }
284 } 284 }
285 285
286 286
287 TEST(ReduceNew1) { 287 TEST(ReduceNew1) {
288 GraphTester graph; 288 GraphTester graph;
289 289
290 Node* n1 = graph.NewNode(&OPA0); 290 Node* n1 = graph.NewNode(&OPA0);
291 Node* n2 = graph.NewNode(&OPA1, n1); 291 Node* n2 = graph.NewNode(&OPA1, n1);
292 Node* n3 = graph.NewNode(&OPA1, n1); 292 Node* n3 = graph.NewNode(&OPA1, n1);
293 Node* end = graph.NewNode(&OPA2, n2, n3); 293 Node* end = graph.NewNode(&OPA2, n2, n3);
294 graph.SetEnd(end); 294 graph.SetEnd(end);
295 295
296 GraphReducer reducer(&graph); 296 GraphReducer reducer(&graph, graph.zone());
297 NewABReducer r(&graph); 297 NewABReducer r(&graph);
298 reducer.AddReducer(&r); 298 reducer.AddReducer(&r);
299 299
300 // Tests A* => B* while creating new nodes. 300 // Tests A* => B* while creating new nodes.
301 for (int i = 0; i < 3; i++) { 301 for (int i = 0; i < 3; i++) {
302 int before = graph.NodeCount(); 302 int before = graph.NodeCount();
303 reducer.ReduceGraph(); 303 reducer.ReduceGraph();
304 if (i == 0) { 304 if (i == 0) {
305 CHECK_NE(before, graph.NodeCount()); 305 CHECK_NE(before, graph.NodeCount());
306 } else { 306 } else {
(...skipping 16 matching lines...) Expand all
323 } 323 }
324 324
325 325
326 TEST(Wrapping1) { 326 TEST(Wrapping1) {
327 GraphTester graph; 327 GraphTester graph;
328 328
329 Node* end = graph.NewNode(&OPA0); 329 Node* end = graph.NewNode(&OPA0);
330 graph.SetEnd(end); 330 graph.SetEnd(end);
331 CHECK_EQ(1, graph.NodeCount()); 331 CHECK_EQ(1, graph.NodeCount());
332 332
333 GraphReducer reducer(&graph); 333 GraphReducer reducer(&graph, graph.zone());
334 A0Wrapper r(&graph); 334 A0Wrapper r(&graph);
335 reducer.AddReducer(&r); 335 reducer.AddReducer(&r);
336 336
337 reducer.ReduceGraph(); 337 reducer.ReduceGraph();
338 CHECK_EQ(2, graph.NodeCount()); 338 CHECK_EQ(2, graph.NodeCount());
339 339
340 Node* nend = graph.end(); 340 Node* nend = graph.end();
341 CHECK_NE(end, nend); 341 CHECK_NE(end, nend);
342 CHECK_EQ(&OPB1, nend->op()); 342 CHECK_EQ(&OPB1, nend->op());
343 CHECK_EQ(1, nend->InputCount()); 343 CHECK_EQ(1, nend->InputCount());
344 CHECK_EQ(end, nend->InputAt(0)); 344 CHECK_EQ(end, nend->InputAt(0));
345 } 345 }
346 346
347 347
348 TEST(Wrapping2) { 348 TEST(Wrapping2) {
349 GraphTester graph; 349 GraphTester graph;
350 350
351 Node* end = graph.NewNode(&OPB0); 351 Node* end = graph.NewNode(&OPB0);
352 graph.SetEnd(end); 352 graph.SetEnd(end);
353 CHECK_EQ(1, graph.NodeCount()); 353 CHECK_EQ(1, graph.NodeCount());
354 354
355 GraphReducer reducer(&graph); 355 GraphReducer reducer(&graph, graph.zone());
356 B0Wrapper r(&graph); 356 B0Wrapper r(&graph);
357 reducer.AddReducer(&r); 357 reducer.AddReducer(&r);
358 358
359 reducer.ReduceGraph(); 359 reducer.ReduceGraph();
360 CHECK_EQ(3, graph.NodeCount()); 360 CHECK_EQ(3, graph.NodeCount());
361 361
362 Node* nend = graph.end(); 362 Node* nend = graph.end();
363 CHECK_NE(end, nend); 363 CHECK_NE(end, nend);
364 CHECK_EQ(&OPC1, nend->op()); 364 CHECK_EQ(&OPC1, nend->op());
365 CHECK_EQ(1, nend->InputCount()); 365 CHECK_EQ(1, nend->InputCount());
366 366
367 Node* n1 = nend->InputAt(0); 367 Node* n1 = nend->InputAt(0);
368 CHECK_NE(end, n1); 368 CHECK_NE(end, n1);
369 CHECK_EQ(&OPC1, n1->op()); 369 CHECK_EQ(&OPC1, n1->op());
370 CHECK_EQ(1, n1->InputCount()); 370 CHECK_EQ(1, n1->InputCount());
371 CHECK_EQ(end, n1->InputAt(0)); 371 CHECK_EQ(end, n1->InputAt(0));
372 } 372 }
373 373
374 374
375 TEST(Forwarding1) { 375 TEST(Forwarding1) {
376 GraphTester graph; 376 GraphTester graph;
377 377
378 Node* n1 = graph.NewNode(&OPA0); 378 Node* n1 = graph.NewNode(&OPA0);
379 Node* end = graph.NewNode(&OPA1, n1); 379 Node* end = graph.NewNode(&OPA1, n1);
380 graph.SetEnd(end); 380 graph.SetEnd(end);
381 381
382 GraphReducer reducer(&graph); 382 GraphReducer reducer(&graph, graph.zone());
383 A1Forwarder r; 383 A1Forwarder r;
384 reducer.AddReducer(&r); 384 reducer.AddReducer(&r);
385 385
386 // Tests A1(x) => x 386 // Tests A1(x) => x
387 for (int i = 0; i < 3; i++) { 387 for (int i = 0; i < 3; i++) {
388 int before = graph.NodeCount(); 388 int before = graph.NodeCount();
389 reducer.ReduceGraph(); 389 reducer.ReduceGraph();
390 CHECK_EQ(before, graph.NodeCount()); 390 CHECK_EQ(before, graph.NodeCount());
391 CHECK_EQ(&OPA0, n1->op()); 391 CHECK_EQ(&OPA0, n1->op());
392 CHECK_EQ(n1, graph.end()); 392 CHECK_EQ(n1, graph.end());
393 } 393 }
394 } 394 }
395 395
396 396
397 TEST(Forwarding2) { 397 TEST(Forwarding2) {
398 GraphTester graph; 398 GraphTester graph;
399 399
400 Node* n1 = graph.NewNode(&OPA0); 400 Node* n1 = graph.NewNode(&OPA0);
401 Node* n2 = graph.NewNode(&OPA1, n1); 401 Node* n2 = graph.NewNode(&OPA1, n1);
402 Node* n3 = graph.NewNode(&OPA1, n1); 402 Node* n3 = graph.NewNode(&OPA1, n1);
403 Node* end = graph.NewNode(&OPA2, n2, n3); 403 Node* end = graph.NewNode(&OPA2, n2, n3);
404 graph.SetEnd(end); 404 graph.SetEnd(end);
405 405
406 GraphReducer reducer(&graph); 406 GraphReducer reducer(&graph, graph.zone());
407 A1Forwarder r; 407 A1Forwarder r;
408 reducer.AddReducer(&r); 408 reducer.AddReducer(&r);
409 409
410 // Tests reducing A2(A1(x), A1(y)) => A2(x, y). 410 // Tests reducing A2(A1(x), A1(y)) => A2(x, y).
411 for (int i = 0; i < 3; i++) { 411 for (int i = 0; i < 3; i++) {
412 int before = graph.NodeCount(); 412 int before = graph.NodeCount();
413 reducer.ReduceGraph(); 413 reducer.ReduceGraph();
414 CHECK_EQ(before, graph.NodeCount()); 414 CHECK_EQ(before, graph.NodeCount());
415 CHECK_EQ(&OPA0, n1->op()); 415 CHECK_EQ(&OPA0, n1->op());
416 CHECK_EQ(n1, end->InputAt(0)); 416 CHECK_EQ(n1, end->InputAt(0));
(...skipping 10 matching lines...) Expand all
427 for (int i = 0; i < 8; i++) { 427 for (int i = 0; i < 8; i++) {
428 GraphTester graph; 428 GraphTester graph;
429 429
430 Node* n1 = graph.NewNode(&OPA0); 430 Node* n1 = graph.NewNode(&OPA0);
431 Node* end = n1; 431 Node* end = n1;
432 for (int j = 0; j < i; j++) { 432 for (int j = 0; j < i; j++) {
433 end = graph.NewNode(&OPA1, end); 433 end = graph.NewNode(&OPA1, end);
434 } 434 }
435 graph.SetEnd(end); 435 graph.SetEnd(end);
436 436
437 GraphReducer reducer(&graph); 437 GraphReducer reducer(&graph, graph.zone());
438 A1Forwarder r; 438 A1Forwarder r;
439 reducer.AddReducer(&r); 439 reducer.AddReducer(&r);
440 440
441 for (int i = 0; i < 3; i++) { 441 for (int i = 0; i < 3; i++) {
442 int before = graph.NodeCount(); 442 int before = graph.NodeCount();
443 reducer.ReduceGraph(); 443 reducer.ReduceGraph();
444 CHECK_EQ(before, graph.NodeCount()); 444 CHECK_EQ(before, graph.NodeCount());
445 CHECK_EQ(&OPA0, n1->op()); 445 CHECK_EQ(&OPA0, n1->op());
446 CHECK_EQ(n1, graph.end()); 446 CHECK_EQ(n1, graph.end());
447 } 447 }
448 } 448 }
449 } 449 }
450 450
451 451
452 TEST(ReduceForward1) { 452 TEST(ReduceForward1) {
453 GraphTester graph; 453 GraphTester graph;
454 454
455 Node* n1 = graph.NewNode(&OPA0); 455 Node* n1 = graph.NewNode(&OPA0);
456 Node* n2 = graph.NewNode(&OPA1, n1); 456 Node* n2 = graph.NewNode(&OPA1, n1);
457 Node* n3 = graph.NewNode(&OPA1, n1); 457 Node* n3 = graph.NewNode(&OPA1, n1);
458 Node* end = graph.NewNode(&OPA2, n2, n3); 458 Node* end = graph.NewNode(&OPA2, n2, n3);
459 graph.SetEnd(end); 459 graph.SetEnd(end);
460 460
461 GraphReducer reducer(&graph); 461 GraphReducer reducer(&graph, graph.zone());
462 InPlaceABReducer r; 462 InPlaceABReducer r;
463 B1Forwarder f; 463 B1Forwarder f;
464 reducer.AddReducer(&r); 464 reducer.AddReducer(&r);
465 reducer.AddReducer(&f); 465 reducer.AddReducer(&f);
466 466
467 // Tests first reducing A => B, then B1(x) => x. 467 // Tests first reducing A => B, then B1(x) => x.
468 for (int i = 0; i < 3; i++) { 468 for (int i = 0; i < 3; i++) {
469 int before = graph.NodeCount(); 469 int before = graph.NodeCount();
470 reducer.ReduceGraph(); 470 reducer.ReduceGraph();
471 CHECK_EQ(before, graph.NodeCount()); 471 CHECK_EQ(before, graph.NodeCount());
(...skipping 22 matching lines...) Expand all
494 494
495 if (i == 0) end = graph.NewNode(&OPA2, n2, n3); 495 if (i == 0) end = graph.NewNode(&OPA2, n2, n3);
496 if (i == 1) end = graph.NewNode(&OPA2, n3, n2); 496 if (i == 1) end = graph.NewNode(&OPA2, n3, n2);
497 if (i == 2) end = graph.NewNode(&OPA2, n2, n1); 497 if (i == 2) end = graph.NewNode(&OPA2, n2, n1);
498 if (i == 3) end = graph.NewNode(&OPA2, n1, n2); 498 if (i == 3) end = graph.NewNode(&OPA2, n1, n2);
499 if (i == 4) end = graph.NewNode(&OPA2, n3, n1); 499 if (i == 4) end = graph.NewNode(&OPA2, n3, n1);
500 if (i == 5) end = graph.NewNode(&OPA2, n1, n3); 500 if (i == 5) end = graph.NewNode(&OPA2, n1, n3);
501 501
502 graph.SetEnd(end); 502 graph.SetEnd(end);
503 503
504 GraphReducer reducer(&graph); 504 GraphReducer reducer(&graph, graph.zone());
505 reducer.AddReducer(&r); 505 reducer.AddReducer(&r);
506 506
507 int before = graph.NodeCount(); 507 int before = graph.NodeCount();
508 reducer.ReduceGraph(); 508 reducer.ReduceGraph();
509 CHECK_EQ(before, graph.NodeCount()); 509 CHECK_EQ(before, graph.NodeCount());
510 CHECK_EQ(&OPA0, n1->op()); 510 CHECK_EQ(&OPA0, n1->op());
511 CHECK_EQ(&OPA1, n2->op()); 511 CHECK_EQ(&OPA1, n2->op());
512 CHECK_EQ(&OPA1, n3->op()); 512 CHECK_EQ(&OPA1, n3->op());
513 CHECK_EQ(&OPA2, end->op()); 513 CHECK_EQ(&OPA2, end->op());
514 CHECK_EQ(end, graph.end()); 514 CHECK_EQ(end, graph.end());
(...skipping 38 matching lines...) Expand 10 before | Expand all | Expand 10 after
553 if (p2[z] == -1) { 553 if (p2[z] == -1) {
554 if (p == 0) p2[z] = d - 1; 554 if (p == 0) p2[z] = d - 1;
555 p--; 555 p--;
556 } 556 }
557 } 557 }
558 n = n / d; 558 n = n / d;
559 } 559 }
560 560
561 GenDAG(&graph, p3, p2, p1); 561 GenDAG(&graph, p3, p2, p1);
562 562
563 GraphReducer reducer(&graph); 563 GraphReducer reducer(&graph, graph.zone());
564 AB2Sorter r1; 564 AB2Sorter r1;
565 A1Forwarder r2; 565 A1Forwarder r2;
566 InPlaceABReducer r3; 566 InPlaceABReducer r3;
567 reducer.AddReducer(&r1); 567 reducer.AddReducer(&r1);
568 reducer.AddReducer(&r2); 568 reducer.AddReducer(&r2);
569 reducer.AddReducer(&r3); 569 reducer.AddReducer(&r3);
570 570
571 reducer.ReduceGraph(); 571 reducer.ReduceGraph();
572 572
573 Node* end = graph.end(); 573 Node* end = graph.end();
(...skipping 18 matching lines...) Expand all
592 TEST(Order) { 592 TEST(Order) {
593 // Test that the order of reducers doesn't matter, as they should be 593 // Test that the order of reducers doesn't matter, as they should be
594 // rerun for changed nodes. 594 // rerun for changed nodes.
595 for (int i = 0; i < 2; i++) { 595 for (int i = 0; i < 2; i++) {
596 GraphTester graph; 596 GraphTester graph;
597 597
598 Node* n1 = graph.NewNode(&OPA0); 598 Node* n1 = graph.NewNode(&OPA0);
599 Node* end = graph.NewNode(&OPA1, n1); 599 Node* end = graph.NewNode(&OPA1, n1);
600 graph.SetEnd(end); 600 graph.SetEnd(end);
601 601
602 GraphReducer reducer(&graph); 602 GraphReducer reducer(&graph, graph.zone());
603 InPlaceABReducer abr; 603 InPlaceABReducer abr;
604 InPlaceBCReducer bcr; 604 InPlaceBCReducer bcr;
605 if (i == 0) { 605 if (i == 0) {
606 reducer.AddReducer(&abr); 606 reducer.AddReducer(&abr);
607 reducer.AddReducer(&bcr); 607 reducer.AddReducer(&bcr);
608 } else { 608 } else {
609 reducer.AddReducer(&bcr); 609 reducer.AddReducer(&bcr);
610 reducer.AddReducer(&abr); 610 reducer.AddReducer(&abr);
611 } 611 }
612 612
613 // Tests A* => C* with in-place updates. 613 // Tests A* => C* with in-place updates.
614 for (int i = 0; i < 3; i++) { 614 for (int i = 0; i < 3; i++) {
615 int before = graph.NodeCount(); 615 int before = graph.NodeCount();
616 reducer.ReduceGraph(); 616 reducer.ReduceGraph();
617 CHECK_EQ(before, graph.NodeCount()); 617 CHECK_EQ(before, graph.NodeCount());
618 CHECK_EQ(&OPC0, n1->op()); 618 CHECK_EQ(&OPC0, n1->op());
619 CHECK_EQ(&OPC1, end->op()); 619 CHECK_EQ(&OPC1, end->op());
620 CHECK_EQ(n1, end->InputAt(0)); 620 CHECK_EQ(n1, end->InputAt(0));
621 } 621 }
622 } 622 }
623 } 623 }
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