[WIP][stdlib] Audit inlinability in BridgeObjectiveC (take 2)

[moiseev]

Version of #20470

rdar://problem/45949961

[moiseev]

@swift-ci Please benchmark

[swift-ci]

Build comment file:

Performance: -O

TEST	OLD	NEW	DELTA	RATIO
Regression
ArrayLiteral	0	1289	+128900000.0%	0.00x
StringEnumRawValueInitialization	1303	17531	+1245.4%	0.07x
COWArrayGuaranteedParameterOverhead	11217	15409	+37.4%	0.73x
ObjectiveCBridgeFromNSDictionaryAnyObject	102209	133422	+30.5%	0.77x
DataCreateSmallArray	30756	38668	+25.7%	0.80x
DataCreateMediumArray	3147	3937	+25.1%	0.80x
ChainedFilterMap	1214	1404	+15.7%	0.86x (?)
MapReduceShortString	17	19	+11.8%	0.89x
StackPromo	16716	18289	+9.4%	0.91x
FlattenListLoop	3972	4339	+9.2%	0.92x
DataCountMedium	34	37	+8.8%	0.92x
MapReduceAnyCollectionShort	2009	2173	+8.2%	0.92x
ArrayPlusEqualThreeElements	1669	1802	+8.0%	0.93x (?)
FlattenListFlatMap	6378	6875	+7.8%	0.93x (?)
MapReduceShort	1989	2141	+7.6%	0.93x
Improvement
Sim2DArray	398	311	-21.9%	1.28x
ReversedArray2	200	171	-14.5%	1.17x
RangeIterationSigned	200	171	-14.5%	1.17x
FatCompactMap	1404	1214	-13.5%	1.16x
MapReduceLazyCollectionShort	34	31	-8.8%	1.10x
DataCountSmall	37	34	-8.1%	1.09x
FrequenciesUsingReduce	4587	4217	-8.1%	1.09x

Code size: -O

TEST	OLD	NEW	DELTA	RATIO
Regression
AngryPhonebook.o	1035	3488	+237.0%	0.30x
SortStrings.o	27936	89398	+220.0%	0.31x
TwoSum.o	5466	13122	+140.1%	0.42x
SuperChars.o	1124	2567	+128.4%	0.44x
Chars.o	1475	2660	+80.3%	0.55x
DictTest.o	19163	34299	+79.0%	0.56x
StringEnum.o	11930	18760	+57.3%	0.64x
CString.o	8466	10426	+23.2%	0.81x
Phonebook.o	11660	14324	+22.8%	0.81x
Histogram.o	4171	4979	+19.4%	0.84x
COWArrayGuaranteedParameterOverhead.o	1175	1399	+19.1%	0.84x
Ackermann.o	1794	2106	+17.4%	0.85x
NSDictionaryCastToSwift.o	1625	1833	+12.8%	0.89x
ArrayLiteral.o	3085	3445	+11.7%	0.90x
Hash.o	39586	43470	+9.8%	0.91x
StringWalk.o	42919	46167	+7.6%	0.93x
FloatingPointPrinting.o	5895	6327	+7.3%	0.93x
RandomShuffle.o	3381	3621	+7.1%	0.93x
RGBHistogram.o	27642	29522	+6.8%	0.94x
ExistentialPerformance.o	68997	73581	+6.6%	0.94x
ObjectiveCBridgingStubs.o	18752	19968	+6.5%	0.94x
LazyFilter.o	9449	10041	+6.3%	0.94x
Array2D.o	4232	4496	+6.2%	0.94x
ChainedFilterMap.o	3117	3309	+6.2%	0.94x
DictionaryLiteral.o	1360	1440	+5.9%	0.94x
FlattenList.o	6312	6680	+5.8%	0.94x
TestsUtils.o	22275	23523	+5.6%	0.95x
InsertCharacter.o	5176	5464	+5.6%	0.95x
StringBuilder.o	7602	8018	+5.5%	0.95x
RandomValues.o	3808	4016	+5.5%	0.95x
RC4.o	4657	4905	+5.3%	0.95x
DictionaryBridge.o	3332	3508	+5.3%	0.95x
ArrayOfGenericRef.o	14244	14988	+5.2%	0.95x
OpenClose.o	3111	3271	+5.1%	0.95x
DataBenchmarks.o	56340	59236	+5.1%	0.95x
DictionaryGroup.o	16706	17551	+5.1%	0.95x
UTF8Decode.o	13002	13634	+4.9%	0.95x
Exclusivity.o	4443	4651	+4.7%	0.96x
PopFront.o	5155	5395	+4.7%	0.96x
DictOfArraysToArrayOfDicts.o	30820	32220	+4.5%	0.96x
StackPromo.o	2295	2399	+4.5%	0.96x
StringEdits.o	14327	14959	+4.4%	0.96x
Suffix.o	25417	26537	+4.4%	0.96x
Substring.o	18842	19658	+4.3%	0.96x
ObjectiveCBridging.o	43176	44998	+4.2%	0.96x
StringTests.o	8036	8372	+4.2%	0.96x
Prefix.o	23737	24729	+4.2%	0.96x
MapReduce.o	32824	34184	+4.1%	0.96x
ProtocolDispatch.o	781	813	+4.1%	0.96x
ReversedCollections.o	11163	11603	+3.9%	0.96x
RangeIteration.o	1626	1690	+3.9%	0.96x
Join.o	2240	2328	+3.9%	0.96x
PopFrontGeneric.o	4686	4870	+3.9%	0.96x
PrefixWhile.o	23070	23974	+3.9%	0.96x
StrToInt.o	4938	5130	+3.9%	0.96x
Combos.o	9901	10285	+3.9%	0.96x
DictionaryBridgeToObjC.o	6069	6301	+3.8%	0.96x
DropWhile.o	22676	23540	+3.8%	0.96x
ObserverForwarderStruct.o	3594	3730	+3.8%	0.96x
RangeAssignment.o	4882	5066	+3.8%	0.96x
ClassArrayGetter.o	5105	5297	+3.8%	0.96x
PointerArithmetics.o	1711	1775	+3.7%	0.96x
ObserverClosure.o	3279	3399	+3.7%	0.96x
CharacterLiteralsLarge.o	883	915	+3.6%	0.97x
SequenceAlgos.o	21475	22251	+3.6%	0.97x
Walsh.o	9090	9418	+3.6%	0.97x
ObjectiveCNoBridgingStubs.o	8181	8469	+3.5%	0.97x
RemoveWhere.o	27351	28311	+3.5%	0.97x
DropLast.o	24683	25539	+3.5%	0.97x
CaptureProp.o	925	957	+3.5%	0.97x
MonteCarloE.o	3266	3378	+3.4%	0.97x
DropFirst.o	24276	25108	+3.4%	0.97x
StringMatch.o	4445	4597	+3.4%	0.97x
ObserverPartiallyAppliedMethod.o	3567	3687	+3.4%	0.97x
ArrayAppend.o	39192	40472	+3.3%	0.97x
ObjectAllocation.o	4091	4219	+3.1%	0.97x
ArraySetElement.o	1031	1063	+3.1%	0.97x
RomanNumbers.o	5935	6119	+3.1%	0.97x
SortIntPyramids.o	12597	12981	+3.0%	0.97x
SevenBoom.o	1584	1632	+3.0%	0.97x
DoubleWidthDivision.o	544	560	+2.9%	0.97x
StringComparison.o	37860	38972	+2.9%	0.97x
NSStringConversion.o	1097	1129	+2.9%	0.97x
BinaryFloatingPointProperties.o	7564	7780	+2.9%	0.97x
SetTests.o	64829	66677	+2.9%	0.97x
ReduceInto.o	19258	19802	+2.8%	0.97x
ErrorHandling.o	3027	3107	+2.6%	0.97x
ArraySubscript.o	3954	4058	+2.6%	0.97x
ProtocolDispatch2.o	1840	1888	+2.6%	0.97x
ObserverUnappliedMethod.o	5266	5402	+2.6%	0.97x
LinkedList.o	1894	1942	+2.5%	0.98x
Radix2CooleyTukey.o	5070	5198	+2.5%	0.98x
Sim2DArray.o	1278	1310	+2.5%	0.98x
NSError.o	1279	1311	+2.5%	0.98x
RangeReplaceableCollectionPlusDefault.o	6083	6235	+2.5%	0.98x
NopDeinit.o	5151	5279	+2.5%	0.98x
CSVParsing.o	32721	33521	+2.4%	0.98x
Prims.o	42865	43905	+2.4%	0.98x
PrimsSplit.o	42917	43957	+2.4%	0.98x
CharacterLiteralsSmall.o	1325	1357	+2.4%	0.98x
RecursiveOwnedParameter.o	1382	1414	+2.3%	0.98x
ArrayOfRef.o	11802	12074	+2.3%	0.98x
WordCount.o	45460	46492	+2.3%	0.98x
DictionaryCopy.o	8512	8704	+2.3%	0.98x
NibbleSort.o	16220	16564	+2.1%	0.98x
SortLettersInPlace.o	8708	8892	+2.1%	0.98x
MonteCarloPi.o	1545	1577	+2.1%	0.98x
Fibonacci.o	1554	1586	+2.1%	0.98x
DriverUtils.o	148695	151711	+2.0%	0.98x
Queue.o	14291	14579	+2.0%	0.98x
ByteSwap.o	1594	1626	+2.0%	0.98x
Hanoi.o	3601	3673	+2.0%	0.98x
ArrayInClass.o	1613	1645	+2.0%	0.98x
StringInterpolation.o	7163	7291	+1.8%	0.98x
IterateData.o	1797	1829	+1.8%	0.98x
DeadArray.o	1802	1834	+1.8%	0.98x
BitCount.o	1818	1850	+1.8%	0.98x
XorLoop.o	1921	1953	+1.7%	0.98x
StaticArray.o	14039	14263	+1.6%	0.98x
Memset.o	2026	2058	+1.6%	0.98x
OpaqueConsumingUsers.o	2062	2094	+1.6%	0.98x
DictionarySubscriptDefault.o	28967	29407	+1.5%	0.99x
DictionaryKeysContains.o	11707	11883	+1.5%	0.99x
StrComplexWalk.o	3361	3409	+1.4%	0.99x
SortLargeExistentials.o	20630	20910	+1.4%	0.99x
ArrayOfPOD.o	2359	2391	+1.4%	0.99x
DictionarySwap.o	27803	28158	+1.3%	0.99x
Calculator.o	2546	2578	+1.3%	0.99x
CountAlgo.o	14884	15060	+1.2%	0.99x
ArrayOfGenericPOD.o	2770	2802	+1.2%	0.99x
AnyHashableWithAClass.o	2965	2997	+1.1%	0.99x
COWTree.o	13436	13580	+1.1%	0.99x
Improvement
DictionaryOfAnyHashableStrings.o	10877	10397	-4.4%	1.05x

Performance: -Osize

TEST	OLD	NEW	DELTA	RATIO
Regression
StringEnumRawValueInitialization	902	17713	+1863.7%	0.05x
ArrayLiteral	220	1484	+574.5%	0.15x
MapReduceLazyCollectionShort	41	85	+107.3%	0.48x
DataCreateSmallArray	27617	44118	+59.7%	0.63x
DataCreateMediumArray	3086	4716	+52.8%	0.65x
COWArrayGuaranteedParameterOverhead	11250	15418	+37.0%	0.73x
DropFirstAnySeqCntRange	15906	19748	+24.2%	0.81x
DropFirstAnySeqCntRangeLazy	15889	19547	+23.0%	0.81x
DropLastAnySeqCntRangeLazy	5295	6513	+23.0%	0.81x
PrefixAnySeqCntRange	15883	19536	+23.0%	0.81x
PrefixAnySeqCntRangeLazy	15886	19520	+22.9%	0.81x
DropLastAnySeqCntRange	5295	6487	+22.5%	0.82x
SuffixAnySeqCntRangeLazy	5295	6477	+22.3%	0.82x
SuffixAnySeqCntRange	5298	6476	+22.2%	0.82x
ObjectiveCBridgeFromNSDictionaryAnyObject	108967	131307	+20.5%	0.83x
PrefixAnySeqCRangeIterLazy	16989	20373	+19.9%	0.83x
PrefixAnySeqCRangeIter	17022	20386	+19.8%	0.83x
FlattenListFlatMap	44677	52916	+18.4%	0.84x
DropWhileAnySeqCRangeIter	18062	21207	+17.4%	0.85x
DropFirstAnySeqCRangeIterLazy	21609	25220	+16.7%	0.86x
DropFirstAnySeqCRangeIter	21606	25201	+16.6%	0.86x
DictionaryLiteral	3233	3583	+10.8%	0.90x
DropWhileAnySeqCntRange	187	205	+9.6%	0.91x
ArrayAppendAscii	2862	3126	+9.2%	0.92x (?)
SuffixCountableRange	11	12	+9.1%	0.92x
Improvement
Sim2DArray	587	405	-31.0%	1.45x
CountAlgoString	4117	3578	-13.1%	1.15x
DropWhileAnySeqCntRangeLazy	282	246	-12.8%	1.15x
FrequenciesUsingReduce	4804	4241	-11.7%	1.13x
DropFirstAnyCollection	183	165	-9.8%	1.11x
PrefixWhileAnyCollectionLazy	176	159	-9.7%	1.11x
PrefixWhileAnySeqCntRangeLazy	176	159	-9.7%	1.11x
SuffixCountableRangeLazy	12	11	-8.3%	1.09x
ReversedDictionary2	342	315	-7.9%	1.09x

Code size: -Osize

TEST	OLD	NEW	DELTA	RATIO
Regression
AngryPhonebook.o	1144	3769	+229.5%	0.30x
SortStrings.o	28887	89949	+211.4%	0.32x
TwoSum.o	5277	13357	+153.1%	0.40x
SuperChars.o	1246	2850	+128.7%	0.44x
DictTest.o	17950	33550	+86.9%	0.54x
Chars.o	1613	2933	+81.8%	0.55x
StringEnum.o	12205	19027	+55.9%	0.64x
COWArrayGuaranteedParameterOverhead.o	1387	1811	+30.6%	0.77x
Ackermann.o	1909	2413	+26.4%	0.79x
CString.o	8330	10338	+24.1%	0.81x
Phonebook.o	12132	14940	+23.1%	0.81x
Histogram.o	4000	4904	+22.6%	0.82x
DoubleWidthDivision.o	625	733	+17.3%	0.85x
ArrayLiteral.o	2936	3417	+16.4%	0.86x
NSDictionaryCastToSwift.o	1658	1926	+16.2%	0.86x
RangeIteration.o	1722	1997	+16.0%	0.86x
PointerArithmetics.o	1816	2091	+15.1%	0.87x
DictionaryLiteral.o	1509	1733	+14.8%	0.87x
StackPromo.o	2325	2669	+14.8%	0.87x
RC4.o	3785	4321	+14.2%	0.88x
ByteSwap.o	1634	1862	+14.0%	0.88x
ProtocolDispatch.o	862	970	+12.5%	0.89x
Hash.o	21095	23671	+12.2%	0.89x
CharacterLiteralsLarge.o	948	1056	+11.4%	0.90x
OpenClose.o	3504	3891	+11.0%	0.90x
ArraySetElement.o	1167	1295	+11.0%	0.90x
ChainedFilterMap.o	3156	3492	+10.6%	0.90x
CaptureProp.o	1093	1209	+10.6%	0.90x
RandomShuffle.o	3419	3763	+10.1%	0.91x
RGBHistogram.o	27533	30173	+9.6%	0.91x
Exclusivity.o	4308	4719	+9.5%	0.91x
Walsh.o	6082	6650	+9.3%	0.91x
Sim2DArray.o	1450	1578	+8.8%	0.92x
MonteCarloPi.o	1530	1662	+8.6%	0.92x
NSStringConversion.o	1274	1382	+8.5%	0.92x
RandomValues.o	3481	3772	+8.4%	0.92x
BitCount.o	1586	1718	+8.3%	0.92x
Fibonacci.o	1594	1726	+8.3%	0.92x
RecursiveOwnedParameter.o	1313	1421	+8.2%	0.92x
LazyFilter.o	8761	9473	+8.1%	0.92x
TestsUtils.o	18707	20192	+7.9%	0.93x
PopFront.o	4966	5350	+7.7%	0.93x
CharacterLiteralsSmall.o	1428	1536	+7.6%	0.93x
SevenBoom.o	1768	1900	+7.5%	0.93x
RomanNumbers.o	6662	7158	+7.4%	0.93x
SequenceAlgos.o	23148	24868	+7.4%	0.93x
DictionaryBridge.o	3452	3704	+7.3%	0.93x
DeadArray.o	1842	1974	+7.2%	0.93x
Array2D.o	4379	4691	+7.1%	0.93x
DictionaryBridgeToObjC.o	5901	6317	+7.0%	0.93x
XorLoop.o	1890	2022	+7.0%	0.93x
LinkedList.o	1905	2037	+6.9%	0.94x
NSError.o	1663	1775	+6.7%	0.94x
Join.o	2501	2669	+6.7%	0.94x
Memset.o	1940	2068	+6.6%	0.94x
ArrayInClass.o	1840	1952	+6.1%	0.94x
InsertCharacter.o	4815	5106	+6.0%	0.94x
MonteCarloE.o	3642	3858	+5.9%	0.94x
FloatingPointPrinting.o	5184	5491	+5.9%	0.94x
RangeReplaceableCollectionPlusDefault.o	5520	5840	+5.8%	0.95x
Radix2CooleyTukey.o	4756	5031	+5.8%	0.95x
ProtocolDispatch2.o	1884	1992	+5.7%	0.95x
IterateData.o	1989	2101	+5.6%	0.95x
ObjectiveCBridging.o	41127	43417	+5.6%	0.95x
PopFrontGeneric.o	4775	5039	+5.5%	0.95x
ObjectAllocation.o	3982	4202	+5.5%	0.95x
FlattenList.o	6696	7064	+5.5%	0.95x
Integrate.o	2454	2586	+5.4%	0.95x
StringMatch.o	4873	5129	+5.3%	0.95x
Calculator.o	2522	2654	+5.2%	0.95x
ObserverClosure.o	3573	3757	+5.1%	0.95x
RangeAssignment.o	5053	5309	+5.1%	0.95x
StringEdits.o	13342	14014	+5.0%	0.95x
DictOfArraysToArrayOfDicts.o	31412	32972	+5.0%	0.95x
ErrorHandling.o	3062	3214	+5.0%	0.95x
UTF8Decode.o	12357	12965	+4.9%	0.95x
ArraySubscript.o	3866	4050	+4.8%	0.95x
DictionaryKeysContains.o	11459	12003	+4.7%	0.95x
ArrayAppend.o	32412	33940	+4.7%	0.95x
ArrayOfPOD.o	2735	2863	+4.7%	0.96x
ClassArrayGetter.o	5169	5401	+4.5%	0.96x
ObserverPartiallyAppliedMethod.o	3927	4103	+4.5%	0.96x
OpaqueConsumingUsers.o	2113	2205	+4.4%	0.96x
DictionaryGroup.o	15799	16479	+4.3%	0.96x
StringTests.o	7668	7991	+4.2%	0.96x
Hanoi.o	3810	3970	+4.2%	0.96x
ObserverForwarderStruct.o	3838	3998	+4.2%	0.96x
SortIntPyramids.o	12321	12833	+4.2%	0.96x
Combos.o	10245	10669	+4.1%	0.96x
StringBuilder.o	7158	7454	+4.1%	0.96x
ReduceInto.o	14360	14936	+4.0%	0.96x
ReversedCollections.o	11612	12076	+4.0%	0.96x
DictionaryCopy.o	7865	8177	+4.0%	0.96x
Prims.o	38933	40469	+3.9%	0.96x
PrimsSplit.o	38985	40521	+3.9%	0.96x
ArrayOfGenericRef.o	13404	13916	+3.8%	0.96x
SortLettersInPlace.o	8779	9099	+3.6%	0.96x
StrComplexWalk.o	3282	3398	+3.5%	0.97x
ArrayOfGenericPOD.o	3002	3106	+3.5%	0.97x
NopDeinit.o	5564	5756	+3.5%	0.97x
MapReduce.o	26448	27352	+3.4%	0.97x
ObjectiveCBridgingStubs.o	17944	18552	+3.4%	0.97x
AnyHashableWithAClass.o	3181	3285	+3.3%	0.97x
CountAlgo.o	14668	15140	+3.2%	0.97x
RemoveWhere.o	25137	25905	+3.1%	0.97x
Suffix.o	24641	25393	+3.1%	0.97x
WordCount.o	41708	42980	+3.0%	0.97x
CSVParsing.o	33089	34089	+3.0%	0.97x
ObserverUnappliedMethod.o	5571	5731	+2.9%	0.97x
DataBenchmarks.o	51029	52469	+2.8%	0.97x
BinaryFloatingPointProperties.o	7417	7625	+2.8%	0.97x
DropWhile.o	21700	22308	+2.8%	0.97x
PrefixWhile.o	22766	23382	+2.7%	0.97x
StrToInt.o	5063	5199	+2.7%	0.97x
DropFirst.o	22420	23012	+2.6%	0.97x
Queue.o	13123	13467	+2.6%	0.97x
StaticArray.o	13019	13355	+2.6%	0.97x
HashQuadratic.o	5080	5208	+2.5%	0.98x
DropLast.o	24243	24827	+2.4%	0.98x
Substring.o	17154	17562	+2.4%	0.98x
ArrayOfRef.o	12514	12810	+2.4%	0.98x
Prefix.o	22537	23065	+2.3%	0.98x
DictionarySubscriptDefault.o	27135	27743	+2.2%	0.98x
StringRemoveDupes.o	8201	8377	+2.1%	0.98x
NibbleSort.o	18596	18940	+1.8%	0.98x
StringWalk.o	37400	38064	+1.8%	0.98x
SetTests.o	58141	59117	+1.7%	0.98x
DictionaryCompactMapValues.o	19326	19638	+1.6%	0.98x
StringInterpolation.o	6484	6588	+1.6%	0.98x
DictionarySwap.o	27107	27531	+1.6%	0.98x
COWTree.o	13594	13802	+1.5%	0.98x
DictTest4.o	20791	21087	+1.4%	0.99x
DriverUtils.o	134615	136495	+1.4%	0.99x
PolymorphicCalls.o	7465	7569	+1.4%	0.99x
StringComparison.o	33652	34116	+1.4%	0.99x
TypeFlood.o	8641	8753	+1.3%	0.99x
DictTest4Legacy.o	23337	23633	+1.3%	0.99x
ObjectiveCNoBridgingStubs.o	8087	8175	+1.1%	0.99x
DictionaryRemove.o	15687	15855	+1.1%	0.99x
Improvement
DictionaryOfAnyHashableStrings.o	10645	10317	-3.1%	1.03x
SortLargeExistentials.o	21238	20702	-2.5%	1.03x

Performance: -Onone

TEST	OLD	NEW	DELTA	RATIO
Regression
ArrayAppendLazyMap	161573	215428	+33.3%	0.75x
DropLastAnySeqCntRange	5535	7109	+28.4%	0.78x
DropLastAnySeqCntRangeLazy	5522	7091	+28.4%	0.78x
PrefixAnySeqCntRangeLazy	16510	21195	+28.4%	0.78x
SuffixAnySeqCntRangeLazy	5513	7074	+28.3%	0.78x
ObjectiveCBridgeFromNSDictionaryAnyObject	108440	138888	+28.1%	0.78x
SuffixAnyCollection	5538	7081	+27.9%	0.78x
SuffixAnySeqCntRange	5529	7067	+27.8%	0.78x
DropLastAnyCollection	5542	7078	+27.7%	0.78x
PrefixWhileAnySeqCntRangeLazy	19406	24783	+27.7%	0.78x
DropFirstAnySeqCntRangeLazy	16606	21178	+27.5%	0.78x
PrefixAnyCollection	16526	21070	+27.5%	0.78x
DropFirstAnySeqCntRange	16613	21170	+27.4%	0.78x
PrefixWhileAnySeqCRangeIterLazy	19376	24615	+27.0%	0.79x
DropFirstAnyCollection	16613	21057	+26.8%	0.79x
PrefixWhileCountableRangeLazy	19463	24626	+26.5%	0.79x
PrefixWhileAnyCollectionLazy	19514	24529	+25.7%	0.80x
Histogram	5770	7217	+25.1%	0.80x
PrefixAnySeqCRangeIterLazy	18039	22458	+24.5%	0.80x
DropWhileAnySeqCntRange	21478	26190	+21.9%	0.82x
DropFirstAnySeqCRangeIter	22514	27021	+20.0%	0.83x
DropFirstAnySeqCRangeIterLazy	22593	27064	+19.8%	0.83x
DictionaryGroup	4567	5351	+17.2%	0.85x
SubstringEquatable	4628	5390	+16.5%	0.86x
CharIndexing_tweet_unicodeScalars_Backwards	748646	862460	+15.2%	0.87x
PrefixWhileAnySeqCntRange	31220	35960	+15.2%	0.87x
SuffixAnySeqCRangeIterLazy	33276	38227	+14.9%	0.87x
SuffixAnySeqCRangeIter	33229	38135	+14.8%	0.87x
PrefixWhileAnyCollection	31485	36001	+14.3%	0.87x
DropLastAnySeqCRangeIterLazy	39630	44140	+11.4%	0.90x
DropLastAnySeqCRangeIter	39754	44225	+11.2%	0.90x
PrefixArrayLazy	34923	38474	+10.2%	0.91x
ArrayOfPOD	781	856	+9.6%	0.91x (?)
PrefixWhileAnySeqCRangeIter	35120	38352	+9.2%	0.92x
Improvement
CountAlgoString	6372	5217	-18.1%	1.22x
Memset	12875	11730	-8.9%	1.10x
XorLoop	8019	7333	-8.6%	1.09x

Code size: -swiftlibs

TEST	OLD	NEW	DELTA	RATIO
Regression
libswiftSwiftPrivateLibcExtras.dylib	20480	24576	+20.0%	0.83x
libswiftSwiftReflectionTest.dylib	49152	53248	+8.3%	0.92x
libswiftFoundation.dylib	1593344	1679360	+5.4%	0.95x
libswiftCloudKit.dylib	94208	98304	+4.3%	0.96x
libswiftSwiftOnoneSupport.dylib	163840	167936	+2.5%	0.98x
libswiftsimd.dylib	266240	270336	+1.5%	0.98x
libswiftStdlibUnittest.dylib	372736	376832	+1.1%	0.99x

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: 16 GB

--------------

[moiseev]

That is clearly a bad idea. Closing.