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Side by Side Diff: test/cctest/test-feedback-vector.cc

Issue 1129853002: Removing FLAG_vector_ics. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Comment response. Created 5 years, 7 months 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 #include "test/cctest/cctest.h" 6 #include "test/cctest/cctest.h"
7 7
8 #include "src/api.h" 8 #include "src/api.h"
9 #include "src/debug.h" 9 #include "src/debug.h"
10 #include "src/execution.h" 10 #include "src/execution.h"
(...skipping 28 matching lines...) Expand all
39 vector = factory->NewTypeFeedbackVector(&one_slot); 39 vector = factory->NewTypeFeedbackVector(&one_slot);
40 CHECK_EQ(1, vector->Slots()); 40 CHECK_EQ(1, vector->Slots());
41 CHECK_EQ(0, vector->ICSlots()); 41 CHECK_EQ(0, vector->ICSlots());
42 42
43 FeedbackVectorSpec one_icslot(0, Code::CALL_IC); 43 FeedbackVectorSpec one_icslot(0, Code::CALL_IC);
44 vector = factory->NewTypeFeedbackVector(&one_icslot); 44 vector = factory->NewTypeFeedbackVector(&one_icslot);
45 CHECK_EQ(0, vector->Slots()); 45 CHECK_EQ(0, vector->Slots());
46 CHECK_EQ(1, vector->ICSlots()); 46 CHECK_EQ(1, vector->ICSlots());
47 47
48 ZoneFeedbackVectorSpec spec(zone, 3, 5); 48 ZoneFeedbackVectorSpec spec(zone, 3, 5);
49 if (FLAG_vector_ics) { 49 for (int i = 0; i < 5; i++) spec.SetKind(i, Code::CALL_IC);
50 for (int i = 0; i < 5; i++) spec.SetKind(i, Code::CALL_IC);
51 }
52 vector = factory->NewTypeFeedbackVector(&spec); 50 vector = factory->NewTypeFeedbackVector(&spec);
53 CHECK_EQ(3, vector->Slots()); 51 CHECK_EQ(3, vector->Slots());
54 CHECK_EQ(5, vector->ICSlots()); 52 CHECK_EQ(5, vector->ICSlots());
55 53
56 int metadata_length = vector->ic_metadata_length(); 54 int metadata_length = vector->ic_metadata_length();
57 if (!FLAG_vector_ics) { 55 CHECK(metadata_length > 0);
58 CHECK_EQ(0, metadata_length);
59 } else {
60 CHECK(metadata_length > 0);
61 }
62 56
63 int index = vector->GetIndex(FeedbackVectorSlot(0)); 57 int index = vector->GetIndex(FeedbackVectorSlot(0));
64 58
65 CHECK_EQ(TypeFeedbackVector::kReservedIndexCount + metadata_length, index); 59 CHECK_EQ(TypeFeedbackVector::kReservedIndexCount + metadata_length, index);
66 CHECK(FeedbackVectorSlot(0) == vector->ToSlot(index)); 60 CHECK(FeedbackVectorSlot(0) == vector->ToSlot(index));
67 61
68 index = vector->GetIndex(FeedbackVectorICSlot(0)); 62 index = vector->GetIndex(FeedbackVectorICSlot(0));
69 CHECK_EQ(index, 63 CHECK_EQ(index,
70 TypeFeedbackVector::kReservedIndexCount + metadata_length + 3); 64 TypeFeedbackVector::kReservedIndexCount + metadata_length + 3);
71 CHECK(FeedbackVectorICSlot(0) == vector->ToICSlot(index)); 65 CHECK(FeedbackVectorICSlot(0) == vector->ToICSlot(index));
72 CHECK_EQ(TypeFeedbackVector::kReservedIndexCount + metadata_length + 3 + 66 CHECK_EQ(TypeFeedbackVector::kReservedIndexCount + metadata_length + 3 +
73 5 * TypeFeedbackVector::elements_per_ic_slot(), 67 5 * TypeFeedbackVector::elements_per_ic_slot(),
74 vector->length()); 68 vector->length());
75 } 69 }
76 70
77 71
78 // IC slots need an encoding to recognize what is in there. 72 // IC slots need an encoding to recognize what is in there.
79 TEST(VectorICMetadata) { 73 TEST(VectorICMetadata) {
80 LocalContext context; 74 LocalContext context;
81 v8::HandleScope scope(context->GetIsolate()); 75 v8::HandleScope scope(context->GetIsolate());
82 if (!FLAG_vector_ics) {
83 // If FLAG_vector_ics is false, we only store CALL_ICs in the vector, so
84 // there is no need for metadata to describe the slots.
85 return;
86 }
87 Isolate* isolate = CcTest::i_isolate(); 76 Isolate* isolate = CcTest::i_isolate();
88 Factory* factory = isolate->factory(); 77 Factory* factory = isolate->factory();
89 Zone* zone = isolate->runtime_zone(); 78 Zone* zone = isolate->runtime_zone();
90 79
91 ZoneFeedbackVectorSpec spec(zone, 10, 3 * 10); 80 ZoneFeedbackVectorSpec spec(zone, 10, 3 * 10);
92 // Set metadata. 81 // Set metadata.
93 for (int i = 0; i < 30; i++) { 82 for (int i = 0; i < 30; i++) {
94 Code::Kind kind; 83 Code::Kind kind;
95 if (i % 3 == 0) { 84 if (i % 3 == 0) {
96 kind = Code::CALL_IC; 85 kind = Code::CALL_IC;
(...skipping 155 matching lines...) Expand 10 before | Expand all | Expand 10 after
252 CompileRun("f(Array)"); 241 CompileRun("f(Array)");
253 CHECK_EQ(MONOMORPHIC, nexus.StateFromFeedback()); 242 CHECK_EQ(MONOMORPHIC, nexus.StateFromFeedback());
254 CHECK(nexus.GetFeedback()->IsAllocationSite()); 243 CHECK(nexus.GetFeedback()->IsAllocationSite());
255 244
256 heap->CollectAllGarbage(); 245 heap->CollectAllGarbage();
257 CHECK_EQ(MONOMORPHIC, nexus.StateFromFeedback()); 246 CHECK_EQ(MONOMORPHIC, nexus.StateFromFeedback());
258 } 247 }
259 248
260 249
261 TEST(VectorLoadICStates) { 250 TEST(VectorLoadICStates) {
262 if (i::FLAG_always_opt || !i::FLAG_vector_ics) return; 251 if (i::FLAG_always_opt) return;
263 CcTest::InitializeVM(); 252 CcTest::InitializeVM();
264 LocalContext context; 253 LocalContext context;
265 v8::HandleScope scope(context->GetIsolate()); 254 v8::HandleScope scope(context->GetIsolate());
266 Isolate* isolate = CcTest::i_isolate(); 255 Isolate* isolate = CcTest::i_isolate();
267 Heap* heap = isolate->heap(); 256 Heap* heap = isolate->heap();
268 257
269 // Make sure function f has a call that uses a type feedback slot. 258 // Make sure function f has a call that uses a type feedback slot.
270 CompileRun( 259 CompileRun(
271 "var o = { foo: 3 };" 260 "var o = { foo: 3 };"
272 "function f(a) { return a.foo; } f(o);"); 261 "function f(a) { return a.foo; } f(o);");
(...skipping 33 matching lines...) Expand 10 before | Expand all | Expand 10 after
306 CHECK_EQ(MEGAMORPHIC, nexus.StateFromFeedback()); 295 CHECK_EQ(MEGAMORPHIC, nexus.StateFromFeedback());
307 CHECK(!nexus.FindFirstMap()); 296 CHECK(!nexus.FindFirstMap());
308 297
309 // After a collection, state should not be reset to PREMONOMORPHIC. 298 // After a collection, state should not be reset to PREMONOMORPHIC.
310 heap->CollectAllGarbage(); 299 heap->CollectAllGarbage();
311 CHECK_EQ(MEGAMORPHIC, nexus.StateFromFeedback()); 300 CHECK_EQ(MEGAMORPHIC, nexus.StateFromFeedback());
312 } 301 }
313 302
314 303
315 TEST(VectorLoadICSlotSharing) { 304 TEST(VectorLoadICSlotSharing) {
316 if (i::FLAG_always_opt || !i::FLAG_vector_ics) return; 305 if (i::FLAG_always_opt) return;
317 CcTest::InitializeVM(); 306 CcTest::InitializeVM();
318 LocalContext context; 307 LocalContext context;
319 v8::HandleScope scope(context->GetIsolate()); 308 v8::HandleScope scope(context->GetIsolate());
320 Isolate* isolate = CcTest::i_isolate(); 309 Isolate* isolate = CcTest::i_isolate();
321 310
322 // Function f has 3 LoadICs, one for each o, but the ICs share the same 311 // Function f has 3 LoadICs, one for each o, but the ICs share the same
323 // feedback vector IC slot. 312 // feedback vector IC slot.
324 CompileRun( 313 CompileRun(
325 "var o = 10;" 314 "var o = 10;"
326 "function f() {" 315 "function f() {"
327 " var x = o + 10;" 316 " var x = o + 10;"
328 " return o + x + o;" 317 " return o + x + o;"
329 "}" 318 "}"
330 "f();"); 319 "f();");
331 Handle<JSFunction> f = v8::Utils::OpenHandle( 320 Handle<JSFunction> f = v8::Utils::OpenHandle(
332 *v8::Handle<v8::Function>::Cast(CcTest::global()->Get(v8_str("f")))); 321 *v8::Handle<v8::Function>::Cast(CcTest::global()->Get(v8_str("f"))));
333 // There should be one IC slot. 322 // There should be one IC slot.
334 Handle<TypeFeedbackVector> feedback_vector = 323 Handle<TypeFeedbackVector> feedback_vector =
335 Handle<TypeFeedbackVector>(f->shared()->feedback_vector(), isolate); 324 Handle<TypeFeedbackVector>(f->shared()->feedback_vector(), isolate);
336 CHECK_EQ(1, feedback_vector->ICSlots()); 325 CHECK_EQ(1, feedback_vector->ICSlots());
337 FeedbackVectorICSlot slot(0); 326 FeedbackVectorICSlot slot(0);
338 LoadICNexus nexus(feedback_vector, slot); 327 LoadICNexus nexus(feedback_vector, slot);
339 CHECK_EQ(MONOMORPHIC, nexus.StateFromFeedback()); 328 CHECK_EQ(MONOMORPHIC, nexus.StateFromFeedback());
340 } 329 }
341 330
342 331
343 TEST(VectorLoadICOnSmi) { 332 TEST(VectorLoadICOnSmi) {
344 if (i::FLAG_always_opt || !i::FLAG_vector_ics) return; 333 if (i::FLAG_always_opt) return;
345 CcTest::InitializeVM(); 334 CcTest::InitializeVM();
346 LocalContext context; 335 LocalContext context;
347 v8::HandleScope scope(context->GetIsolate()); 336 v8::HandleScope scope(context->GetIsolate());
348 Isolate* isolate = CcTest::i_isolate(); 337 Isolate* isolate = CcTest::i_isolate();
349 Heap* heap = isolate->heap(); 338 Heap* heap = isolate->heap();
350 339
351 // Make sure function f has a call that uses a type feedback slot. 340 // Make sure function f has a call that uses a type feedback slot.
352 CompileRun( 341 CompileRun(
353 "var o = { foo: 3 };" 342 "var o = { foo: 3 };"
354 "function f(a) { return a.foo; } f(o);"); 343 "function f(a) { return a.foo; } f(o);");
(...skipping 35 matching lines...) Expand 10 before | Expand all | Expand 10 after
390 CHECK(number_map_found && o_map_found); 379 CHECK(number_map_found && o_map_found);
391 380
392 // The degree of polymorphism doesn't change. 381 // The degree of polymorphism doesn't change.
393 CompileRun("f(100)"); 382 CompileRun("f(100)");
394 CHECK_EQ(POLYMORPHIC, nexus.StateFromFeedback()); 383 CHECK_EQ(POLYMORPHIC, nexus.StateFromFeedback());
395 MapHandleList maps2; 384 MapHandleList maps2;
396 nexus.FindAllMaps(&maps2); 385 nexus.FindAllMaps(&maps2);
397 CHECK_EQ(2, maps2.length()); 386 CHECK_EQ(2, maps2.length());
398 } 387 }
399 } 388 }
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