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Issue 290993009: Reland r21346 "Inobject slack tracking is done on a per-closure basis instead of per-shared info ba… (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: The fix Created 6 years, 7 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 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 "v8.h" 5 #include "v8.h"
6 6
7 #include "compiler.h" 7 #include "compiler.h"
8 8
9 #include "bootstrapper.h" 9 #include "bootstrapper.h"
10 #include "codegen.h" 10 #include "codegen.h"
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503 isolate()->GetHStatistics()->IncrementSubtotals(time_taken_to_create_graph_, 503 isolate()->GetHStatistics()->IncrementSubtotals(time_taken_to_create_graph_,
504 time_taken_to_optimize_, 504 time_taken_to_optimize_,
505 time_taken_to_codegen_); 505 time_taken_to_codegen_);
506 } 506 }
507 } 507 }
508 508
509 509
510 // Sets the expected number of properties based on estimate from compiler. 510 // Sets the expected number of properties based on estimate from compiler.
511 void SetExpectedNofPropertiesFromEstimate(Handle<SharedFunctionInfo> shared, 511 void SetExpectedNofPropertiesFromEstimate(Handle<SharedFunctionInfo> shared,
512 int estimate) { 512 int estimate) {
513 // See the comment in SetExpectedNofProperties.
514 if (shared->live_objects_may_exist()) return;
515
516 // If no properties are added in the constructor, they are more likely 513 // If no properties are added in the constructor, they are more likely
517 // to be added later. 514 // to be added later.
518 if (estimate == 0) estimate = 2; 515 if (estimate == 0) estimate = 2;
519 516
520 // TODO(yangguo): check whether those heuristics are still up-to-date. 517 // TODO(yangguo): check whether those heuristics are still up-to-date.
521 // We do not shrink objects that go into a snapshot (yet), so we adjust 518 // We do not shrink objects that go into a snapshot (yet), so we adjust
522 // the estimate conservatively. 519 // the estimate conservatively.
523 if (shared->GetIsolate()->serializer_enabled()) { 520 if (shared->GetIsolate()->serializer_enabled()) {
524 estimate += 2; 521 estimate += 2;
525 } else if (FLAG_clever_optimizations) { 522 } else if (FLAG_clever_optimizations) {
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1287 AllowHandleDereference allow_deref; 1284 AllowHandleDereference allow_deref;
1288 bool tracing_on = info()->IsStub() 1285 bool tracing_on = info()->IsStub()
1289 ? FLAG_trace_hydrogen_stubs 1286 ? FLAG_trace_hydrogen_stubs
1290 : (FLAG_trace_hydrogen && 1287 : (FLAG_trace_hydrogen &&
1291 info()->closure()->PassesFilter(FLAG_trace_hydrogen_filter)); 1288 info()->closure()->PassesFilter(FLAG_trace_hydrogen_filter));
1292 return (tracing_on && 1289 return (tracing_on &&
1293 OS::StrChr(const_cast<char*>(FLAG_trace_phase), name_[0]) != NULL); 1290 OS::StrChr(const_cast<char*>(FLAG_trace_phase), name_[0]) != NULL);
1294 } 1291 }
1295 1292
1296 } } // namespace v8::internal 1293 } } // namespace v8::internal
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