[ownership] Move ownership lowering past the eager specializer on the stdlib.

[gottesmm]

Just doing the final bit.

[gottesmm]

@swift-ci test source compatibility

[gottesmm]

@swift-ci test

[gottesmm]

@swift-ci benchmark

[swift-ci]

Performance: -O

Code size: -O

Performance: -Osize

Regression	OLD	NEW	DELTA	RATIO
FlattenListLoop	1673	2469	+47.6%	0.68x (?)
FlattenListFlatMap	5510	6532	+18.5%	0.84x (?)

Code size: -Osize

Performance: -Onone

Code size: -swiftlibs

How to read the data

The tables contain differences in performance which are larger than 8% and differences in code size which are larger than 1%.

If you see any unexpected regressions, you should consider fixing the
regressions before you merge the PR.

Noise: Sometimes the performance results (not code size!) contain false
alarms. Unexpected regressions which are marked with '(?)' are probably noise.
If you see regressions which you cannot explain you can try to run the
benchmarks again. If regressions still show up, please consult with the
performance team (@eeckstein).

Hardware Overview

  Model Name: Mac Pro
  Model Identifier: MacPro6,1
  Processor Name: 12-Core Intel Xeon E5
  Processor Speed: 2.7 GHz
  Number of Processors: 1
  Total Number of Cores: 12
  L2 Cache (per Core): 256 KB
  L3 Cache: 30 MB
  Memory: 64 GB

[gottesmm]

@swift-ci test compiler performance

[gottesmm]

Just being careful around code-size. I should have done the smoke perf thing.

[gottesmm]

Failure in the debug source compatibility is also happening on the bots.

[swift-ci]

Summary for master full

Unexpected test results, excluded stats for RxCocoa, Backend

No regressions above thresholds

• Debug-batch
  • debug-batch brief
  • debug-batch detailed
• Release
  • release brief
  • release detailed

Debug-batch

debug-batch brief

Regressed (0)

name	old	new	delta	delta_pct

Improved (0)

name	old	new	delta	delta_pct

Unchanged (delta < 1.0% or delta < 100.0ms) (3)

name	old	new	delta	delta_pct
Frontend.NumInstructionsExecuted	101,568,784,973,569	101,664,526,311,882	95,741,338,313	0.09%
LLVM.NumLLVMBytesOutput	1,599,440,658	1,599,440,130	-528	-0.0%
time.swift-driver.wall	7140.8s	7165.0s	24.2s	0.34%

debug-batch detailed

Regressed (0)

name	old	new	delta	delta_pct

Improved (0)

name	old	new	delta	delta_pct

Unchanged (delta < 1.0% or delta < 100.0ms) (244)

name	old	new	delta	delta_pct
AST.ImportSetCacheHit	1,789,709	1,789,623	-86	-0.0%
AST.ImportSetCacheMiss	479,562	479,556	-6	-0.0%
AST.ImportSetFoldHit	159,408	159,409	1	0.0%
AST.ImportSetFoldMiss	320,154	320,147	-7	-0.0%
AST.ModuleShadowCacheHit	3,048	3,048	0	0.0%
AST.ModuleShadowCacheMiss	1,353	1,353	0	0.0%
AST.ModuleVisibilityCacheHit	37,763	37,763	0	0.0%
AST.ModuleVisibilityCacheMiss	9,651	9,651	0	0.0%
AST.NumASTBytesAllocated	44,298,245,902	44,298,047,850	-198,052	-0.0%
AST.NumASTScopeLookups	3,830,016	3,830,010	-6	-0.0%
AST.NumBraceStmtASTScopeExpansions	548,599	548,599	0	0.0%
AST.NumBraceStmtASTScopes	548,599	548,599	0	0.0%
AST.NumDecls	122,048	122,048	0	0.0%
AST.NumDependencies	308,090	308,091	1	0.0%
AST.NumIterableTypeBodyASTScopeExpansions	245,214	245,214	0	0.0%
AST.NumIterableTypeBodyASTScopes	309,473	309,483	10	0.0%
AST.NumLinkLibraries	0	0	0	0.0%
AST.NumLoadedModules	276,366	276,366	0	0.0%
AST.NumLocalTypeDecls	254	254	0	0.0%
AST.NumModuleLookupClassMember	7,008	7,008	0	0.0%
AST.NumModuleLookupValue	50,940,784	50,938,665	-2,119	-0.0%
AST.NumObjCMethods	24,768	24,768	0	0.0%
AST.NumOperators	683	683	0	0.0%
AST.NumPrecedenceGroups	122	122	0	0.0%
AST.NumReferencedDynamicNames	188	188	0	0.0%
AST.NumReferencedMemberNames	7,968,940	7,968,940	0	0.0%
AST.NumReferencedTopLevelNames	862,026	862,026	0	0.0%
AST.NumSourceBuffers	505,329	505,329	0	0.0%
AST.NumSourceLines	4,198,005	4,198,005	0	0.0%
AST.NumSourceLinesPerSecond	1,612,616	1,611,464	-1,152	-0.07%
AST.NumTotalClangImportedEntities	2,107,332	2,108,256	924	0.04%
Driver.ChildrenMaxRSS	244,687,777,792	244,199,569,408	-488,208,384	-0.2%
Driver.DriverDepCascadingDynamic	0	0	0	0.0%
Driver.DriverDepCascadingExternal	0	0	0	0.0%
Driver.DriverDepCascadingMember	0	0	0	0.0%
Driver.DriverDepCascadingNominal	0	0	0	0.0%
Driver.DriverDepCascadingTopLevel	0	0	0	0.0%
Driver.DriverDepDynamic	0	0	0	0.0%
Driver.DriverDepExternal	0	0	0	0.0%
Driver.DriverDepMember	0	0	0	0.0%
Driver.DriverDepNominal	0	0	0	0.0%
Driver.DriverDepTopLevel	0	0	0	0.0%
Driver.NumDriverJobsRun	24,308	24,308	0	0.0%
Driver.NumDriverJobsSkipped	0	0	0	0.0%
Driver.NumDriverPipePolls	74,454	74,205	-249	-0.33%
Driver.NumDriverPipeReads	64,573	64,382	-191	-0.3%
Driver.NumProcessFailures	0	0	0	0.0%
Frontend.MaxMallocUsage	1,612,095,909,304	1,612,914,603,424	818,694,120	0.05%
Frontend.NumInstructionsExecuted	101,568,784,973,569	101,664,526,311,882	95,741,338,313	0.09%
Frontend.NumProcessFailures	0	0	0	0.0%
IRGen.IRGenRequest	23,262	23,262	0	0.0%
IRModule.NumGOTEntries	193,525	193,525	0	0.0%
IRModule.NumIRAliases	177,131	177,131	0	0.0%
IRModule.NumIRBasicBlocks	5,928,256	5,928,256	0	0.0%
IRModule.NumIRComdatSymbols	0	0	0	0.0%
IRModule.NumIRFunctions	2,987,767	2,987,767	0	0.0%
IRModule.NumIRGlobals	3,305,614	3,305,614	0	0.0%
IRModule.NumIRIFuncs	0	0	0	0.0%
IRModule.NumIRInsts	79,386,184	79,386,184	0	0.0%
IRModule.NumIRNamedMetaData	117,910	117,910	0	0.0%
IRModule.NumIRValueSymbols	5,709,980	5,709,980	0	0.0%
LLVM.NumLLVMBytesOutput	1,599,440,658	1,599,440,130	-528	-0.0%
Parse.CodeCompletionSecondPassRequest	0	0	0	0.0%
Parse.NumFunctionsParsed	241,401	241,401	0	0.0%
Parse.NumIterableDeclContextParsed	840,591	840,593	2	0.0%
Parse.ParseAbstractFunctionBodyRequest	220,358	220,358	0	0.0%
Parse.ParseMembersRequest	694,610	694,612	2	0.0%
Parse.ParseSourceFileRequest	501,944	501,944	0	0.0%
SILGen.ASTLoweringRequest	24,303	24,303	0	0.0%
SILGen.ParseSILModuleRequest	0	0	0	0.0%
SILModule.NumSILGenDefaultWitnessTables	0	0	0	0.0%
SILModule.NumSILGenFunctions	1,838,903	1,838,903	0	0.0%
SILModule.NumSILGenGlobalVariables	46,241	46,241	0	0.0%
SILModule.NumSILGenVtables	29,036	29,036	0	0.0%
SILModule.NumSILGenWitnessTables	108,056	108,056	0	0.0%
SILModule.NumSILOptDefaultWitnessTables	0	0	0	0.0%
SILModule.NumSILOptFunctions	2,184,792	2,184,792	0	0.0%
SILModule.NumSILOptGlobalVariables	47,335	47,335	0	0.0%
SILModule.NumSILOptVtables	29,090	29,090	0	0.0%
SILModule.NumSILOptWitnessTables	139,209	139,209	0	0.0%
SILOptimizer.ExecuteSILPipelineRequest	94,149	94,149	0	0.0%
Sema.AbstractGenericSignatureRequest	37,898	37,898	0	0.0%
Sema.AccessLevelRequest	13,245,237	13,250,141	4,904	0.04%
Sema.AnyObjectLookupRequest	276	276	0	0.0%
Sema.AreAllStoredPropertiesDefaultInitableRequest	22,957	22,957	0	0.0%
Sema.AttachedFunctionBuilderRequest	303,345	303,345	0	0.0%
Sema.AttachedPropertyWrapperTypeRequest	507,863	507,863	0	0.0%
Sema.AttachedPropertyWrappersRequest	2,415,187	2,415,187	0	0.0%
Sema.CallerSideDefaultArgExprRequest	58,801	58,801	0	0.0%
Sema.CheckInconsistentImplementationOnlyImportsRequest	10,410	10,410	0	0.0%
Sema.CheckRedeclarationRequest	863,983	863,983	0	0.0%
Sema.ClassAncestryFlagsRequest	108,280	108,280	0	0.0%
Sema.ClosureHasExplicitResultRequest	78,716	78,716	0	0.0%
Sema.CodeCompletionFileRequest	0	0	0	0.0%
Sema.CollectOverriddenDeclsRequest	8,230,369	8,236,832	6,463	0.08%
Sema.CompareDeclSpecializationRequest	420,113	419,976	-137	-0.03%
Sema.CursorInfoRequest	0	0	0	0.0%
Sema.CustomAttrNominalRequest	574	574	0	0.0%
Sema.CustomAttrTypeRequest	351	351	0	0.0%
Sema.DefaultAndMaxAccessLevelRequest	52,824	52,824	0	0.0%
Sema.DefaultArgumentExprRequest	35,228	35,228	0	0.0%
Sema.DefaultArgumentInitContextRequest	210	210	0	0.0%
Sema.DefaultDefinitionTypeRequest	5,345	5,345	0	0.0%
Sema.DefaultTypeRequest	398,116	398,116	0	0.0%
Sema.DerivativeAttrOriginalDeclRequest	0	0	0	0.0%
Sema.DifferentiableAttributeTypeCheckRequest	0	0	0	0.0%
Sema.DirectLookupRequest	31,627,319	31,627,205	-114	-0.0%
Sema.DirectOperatorLookupRequest	1,873,704	1,873,657	-47	-0.0%
Sema.DirectPrecedenceGroupLookupRequest	555,288	555,288	0	0.0%
Sema.DynamicallyReplacedDeclRequest	968,251	968,251	0	0.0%
Sema.EmittedMembersRequest	26,275	26,275	0	0.0%
Sema.EnumRawTypeRequest	23,292	23,292	0	0.0%
Sema.EnumRawValuesRequest	9,560	9,560	0	0.0%
Sema.ExistentialConformsToSelfRequest	13,685	13,685	0	0.0%
Sema.ExistentialTypeSupportedRequest	15,476	15,476	0	0.0%
Sema.ExpandASTScopeRequest	6,919,243	6,919,249	6	0.0%
Sema.ExtendedNominalRequest	807,220	807,220	0	0.0%
Sema.ExtendedTypeRequest	76,674	76,674	0	0.0%
Sema.FragileFunctionKindRequest	1,666,118	1,666,118	0	0.0%
Sema.FunctionBuilderTypeRequest	302,969	302,969	0	0.0%
Sema.FunctionOperatorRequest	64,828	64,828	0	0.0%
Sema.GenericParamListRequest	9,762,168	9,764,773	2,605	0.03%
Sema.GenericSignatureRequest	2,383,504	2,383,435	-69	-0.0%
Sema.GetDestructorRequest	26,760	26,760	0	0.0%
Sema.HasCircularInheritanceRequest	22,559	22,559	0	0.0%
Sema.HasCircularInheritedProtocolsRequest	8,702	8,702	0	0.0%
Sema.HasCircularRawValueRequest	7,662	7,662	0	0.0%
Sema.HasDefaultInitRequest	51,606	51,606	0	0.0%
Sema.HasDynamicCallableAttributeRequest	0	0	0	0.0%
Sema.HasDynamicMemberLookupAttributeRequest	586,442	586,380	-62	-0.01%
Sema.HasImplementationOnlyImportsRequest	501,944	501,944	0	0.0%
Sema.HasMemberwiseInitRequest	16,592	16,592	0	0.0%
Sema.HasMissingDesignatedInitializersRequest	25,432	25,432	0	0.0%
Sema.HasUserDefinedDesignatedInitRequest	51,616	51,616	0	0.0%
Sema.InferredGenericSignatureRequest	178,206	178,206	0	0.0%
Sema.InheritedDeclsReferencedRequest	5,574,786	5,573,441	-1,345	-0.02%
Sema.InheritedProtocolsRequest	597,911	597,729	-182	-0.03%
Sema.InheritedTypeRequest	291,334	291,279	-55	-0.02%
Sema.InheritsSuperclassInitializersRequest	29,536	29,536	0	0.0%
Sema.InitKindRequest	90,113	90,113	0	0.0%
Sema.InterfaceTypeRequest	13,957,208	13,959,154	1,946	0.01%
Sema.IsABICompatibleOverrideRequest	122,524	122,524	0	0.0%
Sema.IsAccessorTransparentRequest	287,188	287,188	0	0.0%
Sema.IsCallableNominalTypeRequest	1,638	1,638	0	0.0%
Sema.IsDeclApplicableRequest	0	0	0	0.0%
Sema.IsDynamicRequest	1,532,206	1,532,206	0	0.0%
Sema.IsFinalRequest	2,630,338	2,630,044	-294	-0.01%
Sema.IsGetterMutatingRequest	389,066	389,066	0	0.0%
Sema.IsImplicitlyUnwrappedOptionalRequest	2,183,739	2,184,392	653	0.03%
Sema.IsObjCRequest	1,415,766	1,415,688	-78	-0.01%
Sema.IsSetterMutatingRequest	326,350	326,350	0	0.0%
Sema.IsStaticRequest	864,937	864,961	24	0.0%
Sema.LazyStoragePropertyRequest	2,820	2,820	0	0.0%
Sema.LookupAllConformancesInContextRequest	72,246	72,246	0	0.0%
Sema.LookupConformanceInModuleRequest	32,925,187	32,924,275	-912	-0.0%
Sema.LookupInModuleRequest	6,497,489	6,495,816	-1,673	-0.03%
Sema.LookupInfixOperatorRequest	75,165	75,165	0	0.0%
Sema.LookupPostfixOperatorRequest	215	215	0	0.0%
Sema.LookupPrecedenceGroupRequest	24,243	24,243	0	0.0%
Sema.LookupPrefixOperatorRequest	862	862	0	0.0%
Sema.MangleLocalTypeDeclRequest	508	508	0	0.0%
Sema.ModuleImplicitImportsRequest	11,431	11,431	0	0.0%
Sema.ModuleQualifiedLookupRequest	2,958,628	2,956,962	-1,666	-0.06%
Sema.NamedLazyMemberLoadSuccessCount	20,205,737	20,204,681	-1,056	-0.01%
Sema.NamingPatternRequest	209,782	209,782	0	0.0%
Sema.NeedsNewVTableEntryRequest	631,934	631,934	0	0.0%
Sema.NumAccessorBodiesSynthesized	166,629	166,629	0	0.0%
Sema.NumAccessorsSynthesized	267,192	267,192	0	0.0%
Sema.NumConformancesDeserialized	9,207,119	9,205,689	-1,430	-0.02%
Sema.NumConstraintScopes	27,783,850	27,783,760	-90	-0.0%
Sema.NumConstraintsConsideredForEdgeContraction	94,246,204	94,246,147	-57	-0.0%
Sema.NumCrossImportsChecked	0	0	0	0.0%
Sema.NumCrossImportsFound	0	0	0	0.0%
Sema.NumCyclicOneWayComponentsCollapsed	346	346	0	0.0%
Sema.NumDeclsDeserialized	74,635,162	74,635,259	97	0.0%
Sema.NumDeclsTypechecked	1,248,194	1,248,194	0	0.0%
Sema.NumGenericSignatureBuilders	1,181,757	1,181,486	-271	-0.02%
Sema.NumLazyIterableDeclContexts	8,905,464	8,903,329	-2,135	-0.02%
Sema.NumLazyRequirementSignatures	873,147	873,044	-103	-0.01%
Sema.NumLazyRequirementSignaturesLoaded	584,669	584,552	-117	-0.02%
Sema.NumLeafScopes	17,671,180	17,671,163	-17	-0.0%
Sema.NumTypesDeserialized	22,968,673	22,962,897	-5,776	-0.03%
Sema.NumUnloadedLazyIterableDeclContexts	5,666,903	5,665,131	-1,772	-0.03%
Sema.OpaqueReadOwnershipRequest	258,722	258,722	0	0.0%
Sema.OpaqueResultTypeRequest	206	206	0	0.0%
Sema.OperatorPrecedenceGroupRequest	784	784	0	0.0%
Sema.OverriddenDeclsRequest	2,458,021	2,459,476	1,455	0.06%
Sema.ParamSpecifierRequest	1,169,822	1,169,822	0	0.0%
Sema.PatternBindingEntryRequest	430,496	430,496	0	0.0%
Sema.PatternTypeRequest	491,443	491,443	0	0.0%
Sema.PreCheckFunctionBuilderRequest	330	330	0	0.0%
Sema.PrimarySourceFilesRequest	11,431	11,431	0	0.0%
Sema.PropertyWrapperBackingPropertyInfoRequest	501,849	501,849	0	0.0%
Sema.PropertyWrapperBackingPropertyTypeRequest	507,863	507,863	0	0.0%
Sema.PropertyWrapperLValuenessRequest	264	264	0	0.0%
Sema.PropertyWrapperMutabilityRequest	546,119	546,119	0	0.0%
Sema.PropertyWrapperTypeInfoRequest	119	119	0	0.0%
Sema.ProtocolRequiresClassRequest	39,982	39,949	-33	-0.08%
Sema.ProvideDefaultImplForRequest	8,230,369	8,236,832	6,463	0.08%
Sema.QualifiedLookupRequest	5,116,153	5,116,230	77	0.0%
Sema.RangeInfoRequest	0	0	0	0.0%
Sema.RequirementRequest	111,264	111,264	0	0.0%
Sema.RequirementSignatureRequest	645,210	645,034	-176	-0.03%
Sema.RequiresOpaqueAccessorsRequest	1,170,546	1,170,546	0	0.0%
Sema.RequiresOpaqueModifyCoroutineRequest	244,540	244,540	0	0.0%
Sema.ResolveEffectiveMemberwiseInitRequest	0	0	0	0.0%
Sema.ResolveImplicitMemberRequest	382,541	382,574	33	0.01%
Sema.ResolveProtocolNameRequest	0	0	0	0.0%
Sema.ResolveTypeEraserTypeRequest	0	0	0	0.0%
Sema.ResolveTypeRequest	3,338,058	3,338,058	0	0.0%
Sema.ResultTypeRequest	617,648	617,648	0	0.0%
Sema.RootAndResultTypeOfKeypathDynamicMemberRequest	0	0	0	0.0%
Sema.RootTypeOfKeypathDynamicMemberRequest	0	0	0	0.0%
Sema.SPIGroupsRequest	13,810,927	13,816,765	5,838	0.04%
Sema.ScopedImportLookupRequest	996	996	0	0.0%
Sema.SelfAccessKindRequest	604,341	604,359	18	0.0%
Sema.SelfBoundsFromWhereClauseRequest	1,797,820	1,797,061	-759	-0.04%
Sema.SetterAccessLevelRequest	127,038	127,038	0	0.0%
Sema.SimpleDidSetRequest	2,539,864	2,541,670	1,806	0.07%
Sema.StorageImplInfoRequest	1,294,863	1,294,863	0	0.0%
Sema.StoredPropertiesAndMissingMembersRequest	30,449	30,449	0	0.0%
Sema.StoredPropertiesRequest	321,888	321,888	0	0.0%
Sema.StructuralTypeRequest	1,679	1,679	0	0.0%
Sema.SuperclassDeclRequest	436,146	436,042	-104	-0.02%
Sema.SuperclassTypeRequest	55,553	55,553	0	0.0%
Sema.SynthesizeAccessorRequest	267,192	267,192	0	0.0%
Sema.SynthesizeDefaultInitRequest	5,173	5,173	0	0.0%
Sema.SynthesizeMainFunctionRequest	25,375	25,375	0	0.0%
Sema.SynthesizeMemberwiseInitRequest	3,113	3,113	0	0.0%
Sema.TangentStoredPropertyRequest	0	0	0	0.0%
Sema.TypeCheckFunctionBodyAtLocRequest	0	0	0	0.0%
Sema.TypeCheckFunctionBodyRequest	469,446	469,446	0	0.0%
Sema.TypeCheckSourceFileRequest	23,582	23,582	0	0.0%
Sema.TypeDeclsFromWhereClauseRequest	28,375	28,375	0	0.0%
Sema.TypeEraserHasViableInitRequest	0	0	0	0.0%
Sema.TypeRelationCheckRequest	0	0	0	0.0%
Sema.TypeWitnessRequest	8,836	8,836	0	0.0%
Sema.USRGenerationRequest	9,454,368	9,459,906	5,538	0.06%
Sema.UnderlyingTypeDeclsReferencedRequest	305,669	305,618	-51	-0.02%
Sema.UnderlyingTypeRequest	35,678	35,678	0	0.0%
Sema.UnqualifiedLookupRequest	3,957,810	3,957,804	-6	-0.0%
Sema.ValidatePrecedenceGroupRequest	158,758	158,758	0	0.0%
Sema.ValueWitnessRequest	60,915	60,915	0	0.0%
TBDGen.GenerateTBDRequest	23,282	23,282	0	0.0%

Release

release brief

Regressed (0)

name	old	new	delta	delta_pct

Improved (0)

name	old	new	delta	delta_pct

Unchanged (delta < 1.0% or delta < 100.0ms) (3)

name	old	new	delta	delta_pct
Frontend.NumInstructionsExecuted	50,690,622,409,466	50,701,713,582,941	11,091,173,475	0.02%
LLVM.NumLLVMBytesOutput	1,570,972,256	1,570,970,688	-1,568	-0.0%
time.swift-driver.wall	9833.6s	9834.0s	358.0ms	0.0%

release detailed

Regressed (0)

name	old	new	delta	delta_pct

Improved (0)

name	old	new	delta	delta_pct

Unchanged (delta < 1.0% or delta < 100.0ms) (16)

name	old	new	delta	delta_pct
AST.NumLoadedModules	21,335	21,335	0	0.0%
AST.NumTotalClangImportedEntities	431,234	431,234	0	0.0%
IRModule.NumIRBasicBlocks	4,015,130	4,015,130	0	0.0%
IRModule.NumIRFunctions	2,452,559	2,452,559	0	0.0%
IRModule.NumIRGlobals	2,956,505	2,956,505	0	0.0%
IRModule.NumIRInsts	42,104,891	42,104,891	0	0.0%
IRModule.NumIRValueSymbols	5,102,797	5,102,797	0	0.0%
LLVM.NumLLVMBytesOutput	1,570,972,256	1,570,970,688	-1,568	-0.0%
SILModule.NumSILGenFunctions	1,044,998	1,044,998	0	0.0%
SILModule.NumSILOptFunctions	884,684	884,684	0	0.0%
Sema.NumConformancesDeserialized	2,701,478	2,701,478	0	0.0%
Sema.NumConstraintScopes	28,154,041	28,154,041	0	0.0%
Sema.NumDeclsDeserialized	9,043,722	9,043,722	0	0.0%
Sema.NumGenericSignatureBuilders	198,418	198,418	0	0.0%
Sema.NumLazyIterableDeclContexts	1,144,023	1,144,023	0	0.0%
Sema.NumTypesDeserialized	4,324,440	4,324,440	0	0.0%