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Issue 21074004: Cleaning up HAllocate space and double alignment selection. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 7 years, 4 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 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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418 HValue* boilerplate_size = 418 HValue* boilerplate_size =
419 AddInstruction(new(zone) HInstanceSize(boilerplate)); 419 AddInstruction(new(zone) HInstanceSize(boilerplate));
420 HValue* size_in_words = Add<HConstant>(size >> kPointerSizeLog2); 420 HValue* size_in_words = Add<HConstant>(size >> kPointerSizeLog2);
421 checker.If<HCompareNumericAndBranch>(boilerplate_size, 421 checker.If<HCompareNumericAndBranch>(boilerplate_size,
422 size_in_words, Token::EQ); 422 size_in_words, Token::EQ);
423 checker.Then(); 423 checker.Then();
424 424
425 HValue* size_in_bytes = Add<HConstant>(size); 425 HValue* size_in_bytes = Add<HConstant>(size);
426 426
427 HInstruction* object = Add<HAllocate>(size_in_bytes, HType::JSObject(), 427 HInstruction* object = Add<HAllocate>(size_in_bytes, HType::JSObject(),
428 isolate()->heap()->ShouldGloballyPretenure()); 428 isolate()->heap()->GetPretenureMode(), JS_OBJECT_TYPE);
429 429
430 for (int i = 0; i < size; i += kPointerSize) { 430 for (int i = 0; i < size; i += kPointerSize) {
431 HObjectAccess access = HObjectAccess::ForJSObjectOffset(i); 431 HObjectAccess access = HObjectAccess::ForJSObjectOffset(i);
432 Add<HStoreNamedField>(object, access, 432 Add<HStoreNamedField>(object, access,
433 Add<HLoadNamedField>(boilerplate, access)); 433 Add<HLoadNamedField>(boilerplate, access));
434 } 434 }
435 435
436 environment()->Push(object); 436 environment()->Push(object);
437 checker.ElseDeopt(); 437 checker.ElseDeopt();
438 checker.End(); 438 checker.End();
439 439
440 return environment()->Pop(); 440 return environment()->Pop();
441 } 441 }
442 442
443 443
444 Handle<Code> FastCloneShallowObjectStub::GenerateCode() { 444 Handle<Code> FastCloneShallowObjectStub::GenerateCode() {
445 return DoGenerateCode(this); 445 return DoGenerateCode(this);
446 } 446 }
447 447
448 448
449 template <> 449 template <>
450 HValue* CodeStubGraphBuilder<CreateAllocationSiteStub>::BuildCodeStub() { 450 HValue* CodeStubGraphBuilder<CreateAllocationSiteStub>::BuildCodeStub() {
451 HValue* size = Add<HConstant>(AllocationSite::kSize); 451 HValue* size = Add<HConstant>(AllocationSite::kSize);
452 HInstruction* object = Add<HAllocate>(size, HType::JSObject(), true); 452 HInstruction* object = Add<HAllocate>(size, HType::JSObject(), TENURED,
453 JS_OBJECT_TYPE);
453 454
454 // Store the map 455 // Store the map
455 Handle<Map> allocation_site_map(isolate()->heap()->allocation_site_map(), 456 Handle<Map> allocation_site_map(isolate()->heap()->allocation_site_map(),
456 isolate()); 457 isolate());
457 AddStoreMapConstant(object, allocation_site_map); 458 AddStoreMapConstant(object, allocation_site_map);
458 459
459 // Store the payload (smi elements kind) 460 // Store the payload (smi elements kind)
460 HValue* initial_elements_kind = Add<HConstant>(GetInitialFastElementsKind()); 461 HValue* initial_elements_kind = Add<HConstant>(GetInitialFastElementsKind());
461 Add<HStoreNamedField>(object, 462 Add<HStoreNamedField>(object,
462 HObjectAccess::ForAllocationSiteTransitionInfo(), 463 HObjectAccess::ForAllocationSiteTransitionInfo(),
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934 return value; 935 return value;
935 } 936 }
936 937
937 938
938 Handle<Code> ElementsTransitionAndStoreStub::GenerateCode() { 939 Handle<Code> ElementsTransitionAndStoreStub::GenerateCode() {
939 return DoGenerateCode(this); 940 return DoGenerateCode(this);
940 } 941 }
941 942
942 943
943 } } // namespace v8::internal 944 } } // namespace v8::internal
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