[String] Define _copyContents for UTF8View #16245

milseman · 2018-04-29T22:29:40Z

Define _copyContents on String.UTF8View, which allows it to
efficiently memcpy bytes when the String is already in UTF-8 (or
ASCII).

milseman · 2018-04-29T22:29:49Z

@swift-ci please smoke benchmark

swift-ci · 2018-04-30T00:28:31Z

Build comment file:

Optimized (O)

Regression (5)

TEST	OLD	NEW	DELTA	SPEEDUP
FatCompactMap	204209	261262	+27.9%	0.78x
CharIndexing_ascii_unicodeScalars	15898	17792	+11.9%	0.89x (?)
StringUTF16SubstringBuilder	5871	6357	+8.3%	0.92x
DataAppendBytes	5906	6343	+7.4%	0.93x
StringBuilder	758	810	+6.9%	0.94x

Improvement (12)

TEST	OLD	NEW	DELTA	SPEEDUP
ArrayAppendAscii	14061	3756	-73.3%	3.74x
StringBuilderWithLongSubstring	1978	1478	-25.3%	1.34x (?)
StringBuilderLong	1671	1362	-18.5%	1.23x (?)
CharIndexing_korean_unicodeScalars	18060	15601	-13.6%	1.16x
ObjectiveCBridgeFromNSArrayAnyObjectForced	4961	4509	-9.1%	1.10x (?)
DataReplaceSmallBuffer	10362	9419	-9.1%	1.10x (?)
CharIndexing_chinese_unicodeScalars	13039	12042	-7.6%	1.08x (?)
ObjectiveCBridgeStubFromNSString	1243	1152	-7.3%	1.08x (?)
MapReduce	399	372	-6.8%	1.07x
RemoveWhereFilterInts	46	43	-6.5%	1.07x
MapReduceAnyCollection	458	429	-6.3%	1.07x
StringWithCString	43009	40860	-5.0%	1.05x

No Changes (407)

TEST	OLD	NEW	DELTA	SPEEDUP
AngryPhonebook	3897	4006	+2.8%	0.97x (?)
AnyHashableWithAClass	84241	85371	+1.3%	0.99x
Array2D	2548	2549	+0.0%	1.00x (?)
ArrayAppend	1062	1065	+0.3%	1.00x (?)
ArrayAppendArrayOfInt	796	796	+0.0%	1.00x
ArrayAppendFromGeneric	797	804	+0.9%	0.99x (?)
ArrayAppendGenericStructs	1429	1430	+0.1%	1.00x (?)
ArrayAppendLatin1	41040	40168	-2.1%	1.02x
ArrayAppendLazyMap	1343	1345	+0.1%	1.00x
ArrayAppendOptionals	1428	1398	-2.1%	1.02x (?)
ArrayAppendRepeatCol	1341	1338	-0.2%	1.00x (?)
ArrayAppendReserved	791	795	+0.5%	0.99x
ArrayAppendSequence	1120	1119	-0.1%	1.00x (?)
ArrayAppendStrings	6339	6341	+0.0%	1.00x
ArrayAppendToFromGeneric	799	800	+0.1%	1.00x (?)
ArrayAppendToGeneric	802	797	-0.6%	1.01x (?)
ArrayAppendUTF16	40328	39600	-1.8%	1.02x
ArrayInClass	86	86	+0.0%	1.00x
ArrayLiteral	0	0	+0.0%	1.00x
ArrayOfGenericPOD2	150	150	+0.0%	1.00x
ArrayOfGenericRef	4397	4403	+0.1%	1.00x (?)
ArrayOfPOD	184	183	-0.5%	1.01x
ArrayOfRef	4360	4379	+0.4%	1.00x (?)
ArrayPlusEqualArrayOfInt	796	797	+0.1%	1.00x (?)
ArrayPlusEqualFiveElementCollection	5474	5469	-0.1%	1.00x (?)
ArrayPlusEqualSingleElementCollection	1068	1062	-0.6%	1.01x (?)
ArrayPlusEqualThreeElements	1642	1676	+2.1%	0.98x
ArraySubscript	1528	1539	+0.7%	0.99x (?)
ArrayValueProp	8	8	+0.0%	1.00x
ArrayValueProp2	8	8	+0.0%	1.00x
ArrayValueProp3	8	8	+0.0%	1.00x
ArrayValueProp4	8	8	+0.0%	1.00x
BinaryFloatingPointPropertiesBinade	25	25	+0.0%	1.00x
BinaryFloatingPointPropertiesNextUp	28	28	+0.0%	1.00x
BinaryFloatingPointPropertiesUlp	35	35	+0.0%	1.00x
BitCount	202	202	+0.0%	1.00x
ByteSwap	101	102	+1.0%	0.99x (?)
COWTree	5364	5462	+1.8%	0.98x (?)
CSVParsing	718785	717237	-0.2%	1.00x (?)
CSVParsingAlt	798602	783433	-1.9%	1.02x (?)
CSVParsingAltIndices	342408	342759	+0.1%	1.00x (?)
CStringLongAscii	4805	4635	-3.5%	1.04x
CStringLongNonAscii	2273	2281	+0.4%	1.00x (?)
CStringShortAscii	3197	3192	-0.2%	1.00x (?)
Calculator	1119	1120	+0.1%	1.00x (?)
CaptureProp	4107	4104	-0.1%	1.00x (?)
ChainedFilterMap	1409	1408	-0.1%	1.00x (?)
CharIndexing_ascii_unicodeScalars_Backwards	16202	16365	+1.0%	0.99x (?)
CharIndexing_chinese_unicodeScalars_Backwards	12325	12296	-0.2%	1.00x (?)
CharIndexing_japanese_unicodeScalars	19019	19021	+0.0%	1.00x (?)
CharIndexing_japanese_unicodeScalars_Backwards	19495	20494	+5.1%	0.95x (?)
CharIndexing_korean_unicodeScalars_Backwards	15883	15787	-0.6%	1.01x (?)
CharIndexing_punctuatedJapanese_unicodeScalars	2892	2891	-0.0%	1.00x (?)
CharIndexing_punctuatedJapanese_unicodeScalars_Backwards	2954	2945	-0.3%	1.00x
CharIndexing_punctuated_unicodeScalars	3622	3612	-0.3%	1.00x
CharIndexing_punctuated_unicodeScalars_Backwards	3769	3708	-1.6%	1.02x (?)
CharIndexing_russian_unicodeScalars	14179	13564	-4.3%	1.05x (?)
CharIndexing_russian_unicodeScalars_Backwards	13595	13720	+0.9%	0.99x (?)
CharIndexing_tweet_unicodeScalars	31966	32341	+1.2%	0.99x (?)
CharIndexing_tweet_unicodeScalars_Backwards	32290	32053	-0.7%	1.01x (?)
CharIndexing_utf16_unicodeScalars	22817	22633	-0.8%	1.01x (?)
CharIndexing_utf16_unicodeScalars_Backwards	23388	23177	-0.9%	1.01x (?)
CharIteration_ascii_unicodeScalars	20449	20456	+0.0%	1.00x (?)
CharIteration_ascii_unicodeScalars_Backwards	14996	14973	-0.2%	1.00x (?)
CharIteration_chinese_unicodeScalars	15464	15476	+0.1%	1.00x
CharIteration_chinese_unicodeScalars_Backwards	11359	11342	-0.1%	1.00x
CharIteration_japanese_unicodeScalars	24512	24455	-0.2%	1.00x
CharIteration_japanese_unicodeScalars_Backwards	17933	17933	+0.0%	1.00x
CharIteration_korean_unicodeScalars	19809	19804	-0.0%	1.00x (?)
CharIteration_korean_unicodeScalars_Backwards	14527	14538	+0.1%	1.00x (?)
CharIteration_punctuatedJapanese_unicodeScalars	3667	3648	-0.5%	1.01x
CharIteration_punctuatedJapanese_unicodeScalars_Backwards	2722	2719	-0.1%	1.00x (?)
CharIteration_punctuated_unicodeScalars	4613	4587	-0.6%	1.01x (?)
CharIteration_punctuated_unicodeScalars_Backwards	3405	3401	-0.1%	1.00x (?)
CharIteration_russian_unicodeScalars	17015	17002	-0.1%	1.00x (?)
CharIteration_russian_unicodeScalars_Backwards	12491	12481	-0.1%	1.00x
CharIteration_tweet_unicodeScalars	40088	40660	+1.4%	0.99x
CharIteration_tweet_unicodeScalars_Backwards	29664	29649	-0.1%	1.00x (?)
CharIteration_utf16_unicodeScalars	27633	27727	+0.3%	1.00x
CharIteration_utf16_unicodeScalars_Backwards	18704	18754	+0.3%	1.00x
CharacterLiteralsLarge	5837	5901	+1.1%	0.99x
CharacterLiteralsSmall	217	217	+0.0%	1.00x
CharacterPropertiesFetch	4554	4647	+2.0%	0.98x (?)
CharacterPropertiesPrecomputed	1239	1262	+1.9%	0.98x
CharacterPropertiesStashed	1460	1460	+0.0%	1.00x
CharacterPropertiesStashedMemo	1660	1680	+1.2%	0.99x
Chars	1216	1215	-0.1%	1.00x (?)
ClassArrayGetter	15	15	+0.0%	1.00x
Combos	485	486	+0.2%	1.00x (?)
DataAccessBytes	1226	1225	-0.1%	1.00x
DataAppendArray	6414	6678	+4.1%	0.96x (?)
DataAppendDataLargeToLarge	68608	69843	+1.8%	0.98x (?)
DataAppendDataLargeToMedium	37063	37099	+0.1%	1.00x (?)
DataAppendDataLargeToSmall	35705	35829	+0.3%	1.00x (?)
DataAppendDataMediumToLarge	38869	38738	-0.3%	1.00x (?)
DataAppendDataMediumToMedium	8056	7942	-1.4%	1.01x (?)
DataAppendDataMediumToSmall	6941	6879	-0.9%	1.01x (?)
DataAppendDataSmallToLarge	38083	37797	-0.8%	1.01x
DataAppendDataSmallToMedium	7308	7491	+2.5%	0.98x (?)
DataAppendDataSmallToSmall	7020	6986	-0.5%	1.00x (?)
DataAppendSequence	19364	19357	-0.0%	1.00x (?)
DataCopyBytes	2560	2634	+2.9%	0.97x
DataCount	37	37	+0.0%	1.00x
DataMutateBytes	4359	4358	-0.0%	1.00x (?)
DataReplaceLarge	42987	42902	-0.2%	1.00x (?)
DataReplaceLargeBuffer	58870	59617	+1.3%	0.99x
DataReplaceMedium	12470	11983	-3.9%	1.04x (?)
DataReplaceMediumBuffer	12592	13075	+3.8%	0.96x (?)
DataReplaceSmall	9334	9453	+1.3%	0.99x (?)
DataReset	3196	3273	+2.4%	0.98x (?)
DataSetCount	919	910	-1.0%	1.01x
DataSubscript	241	246	+2.1%	0.98x
DictOfArraysToArrayOfDicts	846	840	-0.7%	1.01x (?)
Dictionary	720	731	+1.5%	0.98x (?)
Dictionary2	852	854	+0.2%	1.00x (?)
Dictionary2OfObjects	2222	2243	+0.9%	0.99x (?)
Dictionary3	299	305	+2.0%	0.98x (?)
Dictionary3OfObjects	765	773	+1.0%	0.99x (?)
Dictionary4	338	338	+0.0%	1.00x
Dictionary4Legacy	811	799	-1.5%	1.02x (?)
Dictionary4OfObjects	454	450	-0.9%	1.01x
Dictionary4OfObjectsLegacy	912	915	+0.3%	1.00x
DictionaryBridge	1288	1233	-4.3%	1.04x (?)
DictionaryCopy	123376	125387	+1.6%	0.98x
DictionaryFilter	123493	126907	+2.8%	0.97x
DictionaryGroup	284	281	-1.1%	1.01x
DictionaryGroupOfObjects	2128	2123	-0.2%	1.00x (?)
DictionaryLiteral	2104	2135	+1.5%	0.99x (?)
DictionaryOfObjects	2474	2498	+1.0%	0.99x
DictionaryRemove	5432	5453	+0.4%	1.00x
DictionaryRemoveOfObjects	26729	26694	-0.1%	1.00x (?)
DictionarySubscriptDefaultMutation	338	339	+0.3%	1.00x (?)
DictionarySubscriptDefaultMutationArray	698	694	-0.6%	1.01x (?)
DictionarySubscriptDefaultMutationArrayOfObjects	4060	4061	+0.0%	1.00x (?)
DictionarySubscriptDefaultMutationOfObjects	1730	1736	+0.3%	1.00x (?)
DictionarySwap	1518	1492	-1.7%	1.02x (?)
DictionarySwapAt	6906	6902	-0.1%	1.00x (?)
DictionarySwapAtOfObjects	52267	52306	+0.1%	1.00x (?)
DictionarySwapOfObjects	8638	8573	-0.8%	1.01x (?)
DoubleWidthDivision	0	0	+0.0%	1.00x
DropFirstAnyCollection	84	84	+0.0%	1.00x
DropFirstAnyCollectionLazy	63110	62328	-1.2%	1.01x
DropFirstAnySeqCRangeIter	21394	21323	-0.3%	1.00x
DropFirstAnySeqCRangeIterLazy	21401	21348	-0.2%	1.00x
DropFirstAnySeqCntRange	41	41	+0.0%	1.00x
DropFirstAnySeqCntRangeLazy	41	41	+0.0%	1.00x
DropFirstAnySequence	4942	4994	+1.1%	0.99x
DropFirstAnySequenceLazy	4930	4992	+1.3%	0.99x
DropFirstArray	35	35	+0.0%	1.00x
DropFirstArrayLazy	35	35	+0.0%	1.00x
DropFirstCountableRange	35	35	+0.0%	1.00x
DropFirstCountableRangeLazy	35	35	+0.0%	1.00x
DropFirstSequence	2681	2680	-0.0%	1.00x (?)
DropFirstSequenceLazy	2775	2775	+0.0%	1.00x
DropLastAnyCollection	31	31	+0.0%	1.00x
DropLastAnyCollectionLazy	20865	20769	-0.5%	1.00x (?)
DropLastAnySeqCRangeIter	3675	3679	+0.1%	1.00x (?)
DropLastAnySeqCRangeIterLazy	3695	3659	-1.0%	1.01x
DropLastAnySeqCntRange	13	13	+0.0%	1.00x
DropLastAnySeqCntRangeLazy	13	13	+0.0%	1.00x
DropLastAnySequence	5047	5033	-0.3%	1.00x
DropLastAnySequenceLazy	5191	5194	+0.1%	1.00x (?)
DropLastCountableRange	12	12	+0.0%	1.00x
DropLastCountableRangeLazy	11	11	+0.0%	1.00x
DropLastSequence	593	572	-3.5%	1.04x
DropLastSequenceLazy	594	573	-3.5%	1.04x
DropWhileAnyCollection	107	107	+0.0%	1.00x
DropWhileAnyCollectionLazy	125	125	+0.0%	1.00x
DropWhileAnySeqCRangeIter	16838	16853	+0.1%	1.00x (?)
DropWhileAnySeqCRangeIterLazy	125	125	+0.0%	1.00x
DropWhileAnySeqCntRange	51	51	+0.0%	1.00x
DropWhileAnySeqCntRangeLazy	125	125	+0.0%	1.00x
DropWhileAnySequence	4835	4838	+0.1%	1.00x (?)
DropWhileAnySequenceLazy	1858	1857	-0.1%	1.00x (?)
DropWhileArrayLazy	88	88	+0.0%	1.00x
DropWhileCountableRange	36	36	+0.0%	1.00x
DropWhileCountableRangeLazy	105	105	+0.0%	1.00x
DropWhileSequence	2215	2223	+0.4%	1.00x
DropWhileSequenceLazy	88	88	+0.0%	1.00x
EqualStringSubstring	56	56	+0.0%	1.00x
EqualSubstringString	65	65	+0.0%	1.00x
EqualSubstringSubstring	49	49	+0.0%	1.00x
EqualSubstringSubstringGenericEquatable	49	49	+0.0%	1.00x
ErrorHandling	1497	1513	+1.1%	0.99x (?)
ExclusivityGlobal	5	5	+0.0%	1.00x
ExclusivityIndependent	2	2	+0.0%	1.00x
FilterEvenUsingReduce	1327	1309	-1.4%	1.01x (?)
FilterEvenUsingReduceInto	149	151	+1.3%	0.99x
FloatingPointPrinting_Double_description_small	23463	23578	+0.5%	1.00x
FloatingPointPrinting_Double_description_uniform	23143	23244	+0.4%	1.00x
FloatingPointPrinting_Double_interpolated	78806	78041	-1.0%	1.01x (?)
FloatingPointPrinting_Float80_description_small	30554	30951	+1.3%	0.99x (?)
FloatingPointPrinting_Float80_description_uniform	29784	29740	-0.1%	1.00x (?)
FloatingPointPrinting_Float80_interpolated	82027	81300	-0.9%	1.01x (?)
FloatingPointPrinting_Float_description_small	5215	5194	-0.4%	1.00x
FloatingPointPrinting_Float_description_uniform	5151	5095	-1.1%	1.01x
FloatingPointPrinting_Float_interpolated	52973	53069	+0.2%	1.00x (?)
FrequenciesUsingReduce	5328	5415	+1.6%	0.98x (?)
FrequenciesUsingReduceInto	1808	1807	-0.1%	1.00x (?)
Hanoi	2249	2159	-4.0%	1.04x
HashTest	1039	1023	-1.5%	1.02x (?)
Histogram	905	904	-0.1%	1.00x
Integrate	334	334	+0.0%	1.00x
IterateData	1906	1908	+0.1%	1.00x (?)
Join	186	187	+0.5%	0.99x (?)
LazilyFilteredArrayContains	36279	36277	-0.0%	1.00x (?)
LazilyFilteredArrays	65554	65149	-0.6%	1.01x (?)
LazilyFilteredRange	3913	3878	-0.9%	1.01x (?)
LessSubstringSubstring	49	49	+0.0%	1.00x
LessSubstringSubstringGenericComparable	49	49	+0.0%	1.00x
LinkedList	7578	7599	+0.3%	1.00x (?)
LuhnAlgoEager	297	295	-0.7%	1.01x
LuhnAlgoLazy	298	294	-1.3%	1.01x (?)
MapReduceAnyCollectionShort	2260	2266	+0.3%	1.00x (?)
MapReduceClass	3008	3010	+0.1%	1.00x (?)
MapReduceClassShort	4568	4569	+0.0%	1.00x (?)
MapReduceLazyCollection	13	13	+0.0%	1.00x
MapReduceLazyCollectionShort	34	34	+0.0%	1.00x
MapReduceLazySequence	86	86	+0.0%	1.00x
MapReduceSequence	455	458	+0.7%	0.99x (?)
MapReduceShort	2044	2040	-0.2%	1.00x (?)
MapReduceShortString	30	30	+0.0%	1.00x
MapReduceString	83	80	-3.6%	1.04x (?)
Memset	223	222	-0.4%	1.00x (?)
MonteCarloE	10381	10436	+0.5%	0.99x
MonteCarloPi	42726	42939	+0.5%	1.00x
NSDictionaryCastToSwift	5598	5551	-0.8%	1.01x (?)
NSError	173	174	+0.6%	0.99x (?)
NSStringConversion	695	717	+3.2%	0.97x
NibbleSort	3689	3671	-0.5%	1.00x (?)
NopDeinit	30180	30180	+0.0%	1.00x
ObjectAllocation	135	132	-2.2%	1.02x
ObjectiveCBridgeFromNSArrayAnyObject	27167	26518	-2.4%	1.02x (?)
ObjectiveCBridgeFromNSArrayAnyObjectToString	48142	47244	-1.9%	1.02x (?)
ObjectiveCBridgeFromNSArrayAnyObjectToStringForced	44902	43635	-2.8%	1.03x (?)
ObjectiveCBridgeFromNSDictionaryAnyObject	111268	111183	-0.1%	1.00x (?)
ObjectiveCBridgeFromNSSetAnyObject	49994	49348	-1.3%	1.01x (?)
ObjectiveCBridgeFromNSSetAnyObjectForced	4896	4783	-2.3%	1.02x (?)
ObjectiveCBridgeFromNSSetAnyObjectToString	69281	70688	+2.0%	0.98x (?)
ObjectiveCBridgeFromNSString	1241	1215	-2.1%	1.02x
ObjectiveCBridgeFromNSStringForced	2799	2667	-4.7%	1.05x
ObjectiveCBridgeStubDataAppend	11629	11432	-1.7%	1.02x (?)
ObjectiveCBridgeStubDateMutation	400	401	+0.2%	1.00x
ObjectiveCBridgeStubFromArrayOfNSString	39618	39295	-0.8%	1.01x (?)
ObjectiveCBridgeStubFromNSDate	6627	6570	-0.9%	1.01x
ObjectiveCBridgeStubFromNSStringRef	164	162	-1.2%	1.01x
ObjectiveCBridgeStubNSDataAppend	2646	2622	-0.9%	1.01x (?)
ObjectiveCBridgeStubNSDateMutationRef	13470	13601	+1.0%	0.99x (?)
ObjectiveCBridgeStubToArrayOfNSString	39582	39178	-1.0%	1.01x
ObjectiveCBridgeStubToNSDate	15798	15631	-1.1%	1.01x
ObjectiveCBridgeStubToNSDateRef	3427	3521	+2.7%	0.97x
ObjectiveCBridgeStubToNSString	2383	2399	+0.7%	0.99x (?)
ObjectiveCBridgeStubToNSStringRef	115	116	+0.9%	0.99x (?)
ObjectiveCBridgeStubURLAppendPath	302452	289518	-4.3%	1.04x (?)
ObjectiveCBridgeStubURLAppendPathRef	291944	292704	+0.3%	1.00x (?)
ObjectiveCBridgeToNSArray	14338	14403	+0.5%	1.00x (?)
ObjectiveCBridgeToNSDictionary	26685	26369	-1.2%	1.01x (?)
ObjectiveCBridgeToNSSet	16389	16836	+2.7%	0.97x (?)
ObjectiveCBridgeToNSString	500	490	-2.0%	1.02x
ObserverClosure	2180	2182	+0.1%	1.00x (?)
ObserverForwarderStruct	1265	1262	-0.2%	1.00x (?)
ObserverPartiallyAppliedMethod	3733	3761	+0.8%	0.99x
ObserverUnappliedMethod	2596	2604	+0.3%	1.00x
OpenClose	269	269	+0.0%	1.00x
PartialApplyDynamicType	0	0	+0.0%	1.00x
Phonebook	5078	5092	+0.3%	1.00x
PointerArithmetics	34382	34356	-0.1%	1.00x (?)
PolymorphicCalls	25	25	+0.0%	1.00x
PopFrontArray	1870	1869	-0.1%	1.00x (?)
PopFrontArrayGeneric	1912	1877	-1.8%	1.02x
PopFrontUnsafePointer	9002	9028	+0.3%	1.00x (?)
PrefixAnyCollection	84	84	+0.0%	1.00x
PrefixAnyCollectionLazy	62853	62321	-0.8%	1.01x
PrefixAnySeqCRangeIter	16794	16719	-0.4%	1.00x (?)
PrefixAnySeqCRangeIterLazy	16765	16698	-0.4%	1.00x (?)
PrefixAnySeqCntRange	28	28	+0.0%	1.00x
PrefixAnySeqCntRangeLazy	28	28	+0.0%	1.00x
PrefixAnySequence	4344	4326	-0.4%	1.00x
PrefixAnySequenceLazy	4372	4381	+0.2%	1.00x (?)
PrefixArray	35	35	+0.0%	1.00x
PrefixArrayLazy	35	35	+0.0%	1.00x
PrefixCountableRange	35	35	+0.0%	1.00x
PrefixCountableRangeLazy	35	35	+0.0%	1.00x
PrefixSequence	2219	2225	+0.3%	1.00x
PrefixSequenceLazy	2276	2276	+0.0%	1.00x
PrefixWhileAnyCollection	154	154	+0.0%	1.00x
PrefixWhileAnyCollectionLazy	90	90	+0.0%	1.00x
PrefixWhileAnySeqCRangeIter	9033	9041	+0.1%	1.00x (?)
PrefixWhileAnySeqCRangeIterLazy	72	72	+0.0%	1.00x
PrefixWhileAnySeqCntRange	60	60	+0.0%	1.00x
PrefixWhileAnySeqCntRangeLazy	90	90	+0.0%	1.00x
PrefixWhileAnySequence	10162	10154	-0.1%	1.00x
PrefixWhileAnySequenceLazy	1393	1394	+0.1%	1.00x (?)
PrefixWhileArray	88	88	+0.0%	1.00x
PrefixWhileArrayLazy	70	70	+0.0%	1.00x
PrefixWhileCountableRange	36	36	+0.0%	1.00x
PrefixWhileCountableRangeLazy	35	35	+0.0%	1.00x
PrefixWhileSequence	378	361	-4.5%	1.05x
PrefixWhileSequenceLazy	52	52	+0.0%	1.00x
Prims	919	920	+0.1%	1.00x (?)
PrimsSplit	919	921	+0.2%	1.00x (?)
QueueConcrete	1148	1150	+0.2%	1.00x (?)
QueueGeneric	1150	1150	+0.0%	1.00x
RC4	167	168	+0.6%	0.99x
RGBHistogram	3948	3957	+0.2%	1.00x (?)
RGBHistogramOfObjects	24494	24410	-0.3%	1.00x (?)
RangeAssignment	358	343	-4.2%	1.04x
RangeIterationSigned	200	200	+0.0%	1.00x
RangeReplaceableCollectionPlusDefault	985	979	-0.6%	1.01x (?)
RecursiveOwnedParameter	115	115	+0.0%	1.00x
RemoveWhereFilterString	327	325	-0.6%	1.01x
RemoveWhereFilterStrings	437	437	+0.0%	1.00x
RemoveWhereMoveInts	15	15	+0.0%	1.00x
RemoveWhereMoveStrings	707	707	+0.0%	1.00x
RemoveWhereQuadraticInts	1287	1290	+0.2%	1.00x (?)
RemoveWhereQuadraticString	483	488	+1.0%	0.99x
RemoveWhereQuadraticStrings	2754	2751	-0.1%	1.00x (?)
RemoveWhereSwapInts	19	19	+0.0%	1.00x
RemoveWhereSwapStrings	854	855	+0.1%	1.00x (?)
ReversedArray	57	57	+0.0%	1.00x
ReversedBidirectional	16402	16157	-1.5%	1.02x
ReversedDictionary	363	369	+1.7%	0.98x (?)
RomanNumbers	144996	139489	-3.8%	1.04x
SequenceAlgosAnySequence	11838	11856	+0.2%	1.00x
SequenceAlgosArray	1581	1569	-0.8%	1.01x (?)
SequenceAlgosContiguousArray	1580	1566	-0.9%	1.01x
SequenceAlgosList	1359	1356	-0.2%	1.00x
SequenceAlgosRange	2576	2578	+0.1%	1.00x (?)
SequenceAlgosUnfoldSequence	1103	1102	-0.1%	1.00x (?)
SetExclusiveOr	6481	6594	+1.7%	0.98x
SetExclusiveOr_OfObjects	11856	11735	-1.0%	1.01x
SetIntersect	961	976	+1.6%	0.98x (?)
SetIntersect_OfObjects	1576	1585	+0.6%	0.99x
SetIsSubsetOf	374	374	+0.0%	1.00x
SetIsSubsetOf_OfObjects	438	439	+0.2%	1.00x
SetUnion	5647	5680	+0.6%	0.99x (?)
SetUnion_OfObjects	10149	10064	-0.8%	1.01x
SevenBoom	882	882	+0.0%	1.00x
Sim2DArray	417	417	+0.0%	1.00x
SortLargeExistentials	6184	6194	+0.2%	1.00x
SortLettersInPlace	1053	1054	+0.1%	1.00x (?)
SortSortedStrings	1024	1023	-0.1%	1.00x
SortStrings	2072	2079	+0.3%	1.00x (?)
SortStringsUnicode	2596	2569	-1.0%	1.01x (?)
StackPromo	22468	22448	-0.1%	1.00x (?)
StaticArray	9	9	+0.0%	1.00x
StrComplexWalk	1785	1784	-0.1%	1.00x
StrToInt	2851	2819	-1.1%	1.01x
StringAdder	740	736	-0.5%	1.01x
StringComparison_abnormal	786	786	+0.0%	1.00x
StringComparison_ascii	1272	1280	+0.6%	0.99x
StringComparison_emoji	815	823	+1.0%	0.99x (?)
StringComparison_fastPrenormal	802	796	-0.7%	1.01x
StringComparison_latin1	635	628	-1.1%	1.01x
StringComparison_longSharedPrefix	932	939	+0.8%	0.99x (?)
StringComparison_nonBMPSlowestPrenormal	1612	1616	+0.2%	1.00x (?)
StringComparison_slowerPrenormal	1710	1762	+3.0%	0.97x
StringComparison_zalgo	124977	125583	+0.5%	1.00x (?)
StringEdits	177655	171666	-3.4%	1.03x
StringEnumRawValueInitialization	839	835	-0.5%	1.00x (?)
StringEqualPointerComparison	295	295	+0.0%	1.00x
StringFromLongWholeSubstring	21	21	+0.0%	1.00x
StringFromLongWholeSubstringGeneric	21	21	+0.0%	1.00x
StringHasPrefixAscii	2032	1976	-2.8%	1.03x
StringHasPrefixUnicode	110167	109105	-1.0%	1.01x (?)
StringHasSuffixAscii	2177	2118	-2.7%	1.03x
StringHasSuffixUnicode	114985	114429	-0.5%	1.00x (?)
StringInterpolation	10588	10720	+1.2%	0.99x (?)
StringInterpolationManySmallSegments	19814	19417	-2.0%	1.02x (?)
StringInterpolationSmall	6671	6536	-2.0%	1.02x
StringMatch	11483	11287	-1.7%	1.02x
StringRemoveDupes	793	774	-2.4%	1.02x
StringUTF16Builder	2778	2753	-0.9%	1.01x (?)
StringWalk	1429	1423	-0.4%	1.00x
StringWordBuilder	2327	2334	+0.3%	1.00x (?)
StringWordBuilderReservingCapacity	2013	2036	+1.1%	0.99x
SubstringComparable	31	31	+0.0%	1.00x
SubstringEqualString	791	802	+1.4%	0.99x (?)
SubstringEquatable	1418	1451	+2.3%	0.98x
SubstringFromLongString	10	10	+0.0%	1.00x
SubstringFromLongStringGeneric	75	75	+0.0%	1.00x
SuffixAnyCollection	31	31	+0.0%	1.00x
SuffixAnyCollectionLazy	20855	20782	-0.4%	1.00x (?)
SuffixAnySeqCRangeIter	3862	3882	+0.5%	0.99x (?)
SuffixAnySeqCRangeIterLazy	3878	3869	-0.2%	1.00x (?)
SuffixAnySeqCntRange	21	21	+0.0%	1.00x
SuffixAnySeqCntRangeLazy	21	21	+0.0%	1.00x
SuffixAnySequence	5079	5032	-0.9%	1.01x
SuffixAnySequenceLazy	5168	5165	-0.1%	1.00x (?)
SuffixCountableRange	11	11	+0.0%	1.00x
SuffixCountableRangeLazy	11	11	+0.0%	1.00x
SuffixSequence	3735	3787	+1.4%	0.99x (?)
SuffixSequenceLazy	3797	3757	-1.1%	1.01x (?)
SumUsingReduce	97	97	+0.0%	1.00x
SumUsingReduceInto	102	102	+0.0%	1.00x
SuperChars	14883	14794	-0.6%	1.01x (?)
TwoSum	1748	1777	+1.7%	0.98x (?)
TypeFlood	0	0	+0.0%	1.00x
UTF8Decode	296	295	-0.3%	1.00x
Walsh	404	406	+0.5%	1.00x (?)
WordCountHistogramASCII	8263	8220	-0.5%	1.01x
WordCountHistogramUTF16	14761	14169	-4.0%	1.04x
WordCountUniqueASCII	2472	2540	+2.8%	0.97x
WordCountUniqueUTF16	7940	7723	-2.7%	1.03x
WordSplitASCII	8847	8459	-4.4%	1.05x
WordSplitUTF16	11147	10645	-4.5%	1.05x (?)
XorLoop	401	401	+0.0%	1.00x

Unoptimized (Onone)

Regression (25)

TEST	OLD	NEW	DELTA	SPEEDUP
ArrayAppendLazyMap	170089	216723	+27.4%	0.78x
PrefixWhileArrayLazy	12426	15788	+27.1%	0.79x (?)
MapReduceLazyCollection	22683	28232	+24.5%	0.80x
DropWhileArrayLazy	14233	17492	+22.9%	0.81x
ObjectiveCBridgeStubToNSString	2421	2933	+21.1%	0.83x
RemoveWhereFilterString	1290	1549	+20.1%	0.83x
MapReduceLazyCollectionShort	33452	39621	+18.4%	0.84x
FatCompactMap	297248	349758	+17.7%	0.85x
PrefixArrayLazy	29413	33823	+15.0%	0.87x
ObjectiveCBridgeFromNSSetAnyObjectForced	6090	6972	+14.5%	0.87x
DropFirstArrayLazy	29461	33721	+14.5%	0.87x
SubstringComparable	1653	1875	+13.4%	0.88x
ObjectiveCBridgeStubFromNSString	1083	1209	+11.6%	0.90x (?)
LazilyFilteredArrayContains	755298	827656	+9.6%	0.91x
StringWithCString	41382	45229	+9.3%	0.91x
DataAppendBytes	5117	5534	+8.1%	0.92x (?)
Dictionary2OfObjects	4168	4452	+6.8%	0.94x (?)
StrComplexWalk	6830	7281	+6.6%	0.94x
ObjectiveCBridgeStubToNSDate	15111	16105	+6.6%	0.94x (?)
FilterEvenUsingReduce	3625	3861	+6.5%	0.94x
StringEdits	415200	440992	+6.2%	0.94x
ChainedFilterMap	233889	248333	+6.2%	0.94x
RomanNumbers	1304904	1383978	+6.1%	0.94x
CharIteration_chinese_unicodeScalars_Backwards	220017	233095	+5.9%	0.94x
NSStringConversion	737	779	+5.7%	0.95x

Improvement (17)

TEST	OLD	NEW	DELTA	SPEEDUP
ArrayAppendAscii	39507	28496	-27.9%	1.39x
FloatingPointPrinting_Double_description_uniform	41576	36025	-13.4%	1.15x
FloatingPointPrinting_Float_interpolated	80875	70856	-12.4%	1.14x (?)
Dictionary4OfObjects	1927	1735	-10.0%	1.11x (?)
ArrayPlusEqualFiveElementCollection	261689	238071	-9.0%	1.10x (?)
Dictionary4	1300	1189	-8.5%	1.09x
ObjectiveCBridgeFromNSString	3171	2908	-8.3%	1.09x
CStringShortAscii	6829	6273	-8.1%	1.09x (?)
ObjectiveCBridgeFromNSArrayAnyObjectToStringForced	49734	46309	-6.9%	1.07x (?)
StringInterpolationSmall	9834	9187	-6.6%	1.07x
ObjectiveCBridgeFromNSStringForced	3012	2815	-6.5%	1.07x (?)
CharIndexing_russian_unicodeScalars	311594	292019	-6.3%	1.07x
ObjectiveCBridgeToNSArray	15111	14190	-6.1%	1.06x
FloatingPointPrinting_Double_interpolated	104216	98001	-6.0%	1.06x (?)
StringAdder	1155	1087	-5.9%	1.06x
Dictionary3	949	896	-5.6%	1.06x
DataReplaceSmall	7160	6814	-4.8%	1.05x (?)

No Changes (382)

TEST	OLD	NEW	DELTA	SPEEDUP
AngryPhonebook	5854	5688	-2.8%	1.03x (?)
AnyHashableWithAClass	102114	102863	+0.7%	0.99x (?)
Array2D	652168	650435	-0.3%	1.00x
ArrayAppend	4671	4667	-0.1%	1.00x (?)
ArrayAppendArrayOfInt	863	865	+0.2%	1.00x (?)
ArrayAppendFromGeneric	870	869	-0.1%	1.00x (?)
ArrayAppendGenericStructs	1499	1506	+0.5%	1.00x (?)
ArrayAppendLatin1	65038	65742	+1.1%	0.99x
ArrayAppendOptionals	1501	1508	+0.5%	1.00x (?)
ArrayAppendRepeatCol	184985	185596	+0.3%	1.00x
ArrayAppendReserved	4281	4283	+0.0%	1.00x (?)
ArrayAppendSequence	103695	104452	+0.7%	0.99x
ArrayAppendStrings	6442	6458	+0.2%	1.00x (?)
ArrayAppendToFromGeneric	866	867	+0.1%	1.00x (?)
ArrayAppendToGeneric	874	872	-0.2%	1.00x (?)
ArrayAppendUTF16	64702	65242	+0.8%	0.99x
ArrayInClass	6190	6247	+0.9%	0.99x
ArrayLiteral	1806	1806	+0.0%	1.00x
ArrayOfGenericPOD2	1079	1073	-0.6%	1.01x (?)
ArrayOfGenericRef	10753	10844	+0.8%	0.99x (?)
ArrayOfPOD	761	763	+0.3%	1.00x
ArrayOfRef	9932	9946	+0.1%	1.00x (?)
ArrayPlusEqualArrayOfInt	868	869	+0.1%	1.00x (?)
ArrayPlusEqualSingleElementCollection	234953	234026	-0.4%	1.00x (?)
ArrayPlusEqualThreeElements	9484	9372	-1.2%	1.01x (?)
ArraySubscript	107313	108422	+1.0%	0.99x
ArrayValueProp	3664	3758	+2.6%	0.97x
ArrayValueProp2	15393	15478	+0.6%	0.99x (?)
ArrayValueProp3	4229	4243	+0.3%	1.00x (?)
ArrayValueProp4	4145	4158	+0.3%	1.00x (?)
BinaryFloatingPointPropertiesBinade	85	89	+4.7%	0.96x
BinaryFloatingPointPropertiesNextUp	137	134	-2.2%	1.02x
BinaryFloatingPointPropertiesUlp	128	131	+2.3%	0.98x
BitCount	8897	8892	-0.1%	1.00x (?)
ByteSwap	9656	9640	-0.2%	1.00x
COWTree	12593	12062	-4.2%	1.04x
CSVParsing	2893278	2863841	-1.0%	1.01x (?)
CSVParsingAlt	1435745	1424400	-0.8%	1.01x (?)
CSVParsingAltIndices	2389228	2432322	+1.8%	0.98x
CStringLongAscii	5384	5546	+3.0%	0.97x
CStringLongNonAscii	2517	2563	+1.8%	0.98x (?)
Calculator	2138	2180	+2.0%	0.98x
CaptureProp	280857	278455	-0.9%	1.01x
CharIndexing_ascii_unicodeScalars	366725	384098	+4.7%	0.95x (?)
CharIndexing_ascii_unicodeScalars_Backwards	401228	401025	-0.1%	1.00x (?)
CharIndexing_chinese_unicodeScalars	277913	269046	-3.2%	1.03x (?)
CharIndexing_chinese_unicodeScalars_Backwards	298308	298721	+0.1%	1.00x (?)
CharIndexing_japanese_unicodeScalars	439707	425489	-3.2%	1.03x
CharIndexing_japanese_unicodeScalars_Backwards	478024	480600	+0.5%	0.99x (?)
CharIndexing_korean_unicodeScalars	350640	341366	-2.6%	1.03x (?)
CharIndexing_korean_unicodeScalars_Backwards	386567	386826	+0.1%	1.00x (?)
CharIndexing_punctuatedJapanese_unicodeScalars	67748	66072	-2.5%	1.03x (?)
CharIndexing_punctuatedJapanese_unicodeScalars_Backwards	70995	69249	-2.5%	1.03x (?)
CharIndexing_punctuated_unicodeScalars	82618	79305	-4.0%	1.04x
CharIndexing_punctuated_unicodeScalars_Backwards	88373	89028	+0.7%	0.99x (?)
CharIndexing_russian_unicodeScalars_Backwards	333529	332342	-0.4%	1.00x (?)
CharIndexing_tweet_unicodeScalars	720945	725340	+0.6%	0.99x (?)
CharIndexing_tweet_unicodeScalars_Backwards	788049	786114	-0.2%	1.00x (?)
CharIndexing_utf16_unicodeScalars	305394	299348	-2.0%	1.02x (?)
CharIndexing_utf16_unicodeScalars_Backwards	337335	330646	-2.0%	1.02x (?)
CharIteration_ascii_unicodeScalars	149928	149257	-0.4%	1.00x (?)
CharIteration_ascii_unicodeScalars_Backwards	292897	301470	+2.9%	0.97x
CharIteration_chinese_unicodeScalars	113343	113129	-0.2%	1.00x (?)
CharIteration_japanese_unicodeScalars	179224	179513	+0.2%	1.00x (?)
CharIteration_japanese_unicodeScalars_Backwards	346365	357564	+3.2%	0.97x
CharIteration_korean_unicodeScalars	145534	146926	+1.0%	0.99x (?)
CharIteration_korean_unicodeScalars_Backwards	286627	289173	+0.9%	0.99x
CharIteration_punctuatedJapanese_unicodeScalars	26926	26863	-0.2%	1.00x (?)
CharIteration_punctuatedJapanese_unicodeScalars_Backwards	51577	52116	+1.0%	0.99x (?)
CharIteration_punctuated_unicodeScalars	33568	33408	-0.5%	1.00x (?)
CharIteration_punctuated_unicodeScalars_Backwards	64486	65799	+2.0%	0.98x
CharIteration_russian_unicodeScalars	125407	124537	-0.7%	1.01x (?)
CharIteration_russian_unicodeScalars_Backwards	241610	248016	+2.7%	0.97x (?)
CharIteration_tweet_unicodeScalars	296865	296180	-0.2%	1.00x (?)
CharIteration_tweet_unicodeScalars_Backwards	572645	596435	+4.2%	0.96x
CharIteration_utf16_unicodeScalars	126759	128168	+1.1%	0.99x
CharIteration_utf16_unicodeScalars_Backwards	244392	247997	+1.5%	0.99x (?)
CharacterLiteralsLarge	5712	5775	+1.1%	0.99x
CharacterLiteralsSmall	727	704	-3.2%	1.03x
CharacterPropertiesFetch	5423	5418	-0.1%	1.00x (?)
CharacterPropertiesPrecomputed	3723	3680	-1.2%	1.01x (?)
CharacterPropertiesStashed	2334	2327	-0.3%	1.00x (?)
CharacterPropertiesStashedMemo	4566	4692	+2.8%	0.97x (?)
Chars	36068	36105	+0.1%	1.00x
ClassArrayGetter	988	989	+0.1%	1.00x (?)
Combos	2367	2395	+1.2%	0.99x (?)
DataAccessBytes	2404	2395	-0.4%	1.00x (?)
DataAppendArray	5565	5739	+3.1%	0.97x (?)
DataAppendDataLargeToLarge	68456	68091	-0.5%	1.01x (?)
DataAppendDataLargeToMedium	35232	35739	+1.4%	0.99x (?)
DataAppendDataLargeToSmall	34562	34240	-0.9%	1.01x (?)
DataAppendDataMediumToLarge	38599	38135	-1.2%	1.01x
DataAppendDataMediumToMedium	6675	6951	+4.1%	0.96x (?)
DataAppendDataMediumToSmall	6105	6053	-0.9%	1.01x (?)
DataAppendDataSmallToLarge	36945	37224	+0.8%	0.99x (?)
DataAppendDataSmallToMedium	6197	6310	+1.8%	0.98x (?)
DataAppendDataSmallToSmall	6131	6099	-0.5%	1.01x (?)
DataAppendSequence	1919791	1920744	+0.0%	1.00x (?)
DataCopyBytes	2625	2648	+0.9%	0.99x (?)
DataCount	223	223	+0.0%	1.00x
DataMutateBytes	5227	5252	+0.5%	1.00x (?)
DataReplaceLarge	41512	40148	-3.3%	1.03x
DataReplaceLargeBuffer	58196	59511	+2.3%	0.98x (?)
DataReplaceMedium	9269	9307	+0.4%	1.00x (?)
DataReplaceMediumBuffer	12864	12354	-4.0%	1.04x (?)
DataReplaceSmallBuffer	10152	9717	-4.3%	1.04x (?)
DataReset	2864	2832	-1.1%	1.01x (?)
DataSetCount	563	568	+0.9%	0.99x (?)
DataSubscript	443	444	+0.2%	1.00x
DictOfArraysToArrayOfDicts	3651	3618	-0.9%	1.01x (?)
Dictionary	2354	2365	+0.5%	1.00x (?)
Dictionary2	1477	1479	+0.1%	1.00x (?)
Dictionary3OfObjects	2106	2166	+2.8%	0.97x (?)
Dictionary4Legacy	1697	1758	+3.6%	0.97x
Dictionary4OfObjectsLegacy	2390	2335	-2.3%	1.02x (?)
DictionaryBridge	1336	1389	+4.0%	0.96x (?)
DictionaryCopy	327668	325725	-0.6%	1.01x (?)
DictionaryFilter	338637	335602	-0.9%	1.01x (?)
DictionaryGroup	4593	4569	-0.5%	1.01x (?)
DictionaryGroupOfObjects	6903	6875	-0.4%	1.00x (?)
DictionaryLiteral	8931	8986	+0.6%	0.99x (?)
DictionaryOfObjects	6257	6382	+2.0%	0.98x (?)
DictionaryRemove	17758	17906	+0.8%	0.99x
DictionaryRemoveOfObjects	50115	50335	+0.4%	1.00x (?)
DictionarySubscriptDefaultMutation	2008	2003	-0.2%	1.00x (?)
DictionarySubscriptDefaultMutationArray	2318	2265	-2.3%	1.02x
DictionarySubscriptDefaultMutationArrayOfObjects	9434	9220	-2.3%	1.02x
DictionarySubscriptDefaultMutationOfObjects	5366	5393	+0.5%	0.99x (?)
DictionarySwap	5236	5226	-0.2%	1.00x (?)
DictionarySwapAt	35424	35958	+1.5%	0.99x (?)
DictionarySwapAtOfObjects	113716	114250	+0.5%	1.00x (?)
DictionarySwapOfObjects	18308	18289	-0.1%	1.00x (?)
DoubleWidthDivision	0	0	+0.0%	1.00x
DropFirstAnyCollection	15483	15457	-0.2%	1.00x (?)
DropFirstAnyCollectionLazy	102064	102577	+0.5%	0.99x (?)
DropFirstAnySeqCRangeIter	23731	24615	+3.7%	0.96x (?)
DropFirstAnySeqCRangeIterLazy	23632	23593	-0.2%	1.00x (?)
DropFirstAnySeqCntRange	15404	15357	-0.3%	1.00x (?)
DropFirstAnySeqCntRangeLazy	15407	15417	+0.1%	1.00x (?)
DropFirstAnySequence	13009	13002	-0.1%	1.00x (?)
DropFirstAnySequenceLazy	12808	12963	+1.2%	0.99x
DropFirstArray	3445	3435	-0.3%	1.00x
DropFirstCountableRange	323	323	+0.0%	1.00x
DropFirstCountableRangeLazy	34434	34611	+0.5%	0.99x
DropFirstSequence	12478	12577	+0.8%	0.99x
DropFirstSequenceLazy	12533	12550	+0.1%	1.00x (?)
DropLastAnyCollection	5168	5182	+0.3%	1.00x (?)
DropLastAnyCollectionLazy	33272	34735	+4.4%	0.96x
DropLastAnySeqCRangeIter	40991	40625	-0.9%	1.01x
DropLastAnySeqCRangeIterLazy	41017	40780	-0.6%	1.01x (?)
DropLastAnySeqCntRange	5142	5133	-0.2%	1.00x (?)
DropLastAnySeqCntRangeLazy	5135	5157	+0.4%	1.00x
DropLastAnySequence	31086	31432	+1.1%	0.99x (?)
DropLastAnySequenceLazy	31200	31051	-0.5%	1.00x (?)
DropLastCountableRange	112	112	+0.0%	1.00x
DropLastCountableRangeLazy	11488	11533	+0.4%	1.00x
DropLastSequence	30762	30738	-0.1%	1.00x (?)
DropLastSequenceLazy	31196	31039	-0.5%	1.01x (?)
DropWhileAnyCollection	20018	20065	+0.2%	1.00x (?)
DropWhileAnyCollectionLazy	22386	22520	+0.6%	0.99x (?)
DropWhileAnySeqCRangeIter	24747	24737	-0.0%	1.00x (?)
DropWhileAnySeqCRangeIterLazy	22336	22222	-0.5%	1.01x (?)
DropWhileAnySeqCntRange	19843	19967	+0.6%	0.99x
DropWhileAnySeqCntRangeLazy	22320	22222	-0.4%	1.00x
DropWhileAnySequence	13574	13609	+0.3%	1.00x
DropWhileAnySequenceLazy	12571	12438	-1.1%	1.01x
DropWhileCountableRange	4855	4929	+1.5%	0.98x
DropWhileCountableRangeLazy	21998	21904	-0.4%	1.00x
DropWhileSequence	13200	13304	+0.8%	0.99x
DropWhileSequenceLazy	12335	12351	+0.1%	1.00x (?)
EqualStringSubstring	72	72	+0.0%	1.00x
EqualSubstringString	72	72	+0.0%	1.00x
EqualSubstringSubstring	76	73	-3.9%	1.04x
EqualSubstringSubstringGenericEquatable	58	60	+3.4%	0.97x
ErrorHandling	6710	6883	+2.6%	0.97x (?)
ExclusivityGlobal	186	186	+0.0%	1.00x
ExclusivityIndependent	77	75	-2.6%	1.03x
FilterEvenUsingReduceInto	1919	1941	+1.1%	0.99x (?)
FloatingPointPrinting_Double_description_small	24316	24388	+0.3%	1.00x (?)
FloatingPointPrinting_Float80_description_small	31368	31388	+0.1%	1.00x (?)
FloatingPointPrinting_Float80_description_uniform	58556	59549	+1.7%	0.98x (?)
FloatingPointPrinting_Float80_interpolated	122323	122680	+0.3%	1.00x (?)
FloatingPointPrinting_Float_description_small	6807	6959	+2.2%	0.98x
FloatingPointPrinting_Float_description_uniform	17225	17429	+1.2%	0.99x
FrequenciesUsingReduce	11286	10990	-2.6%	1.03x (?)
FrequenciesUsingReduceInto	3433	3521	+2.6%	0.98x (?)
Hanoi	20342	20372	+0.1%	1.00x (?)
HashTest	21495	22165	+3.1%	0.97x
Histogram	7543	7315	-3.0%	1.03x
Integrate	459	460	+0.2%	1.00x (?)
IterateData	5504	5469	-0.6%	1.01x
Join	806	799	-0.9%	1.01x
LazilyFilteredArrays	1520995	1540267	+1.3%	0.99x
LazilyFilteredRange	533659	534016	+0.1%	1.00x (?)
LessSubstringSubstring	75	75	+0.0%	1.00x
LessSubstringSubstringGenericComparable	58	59	+1.7%	0.98x
LinkedList	32499	32465	-0.1%	1.00x (?)
LuhnAlgoEager	5603	5601	-0.0%	1.00x (?)
LuhnAlgoLazy	5809	5716	-1.6%	1.02x (?)
MapReduce	25712	25497	-0.8%	1.01x
MapReduceAnyCollection	25679	25601	-0.3%	1.00x (?)
MapReduceAnyCollectionShort	37025	38271	+3.4%	0.97x
MapReduceClass	29628	29597	-0.1%	1.00x (?)
MapReduceClassShort	41373	41395	+0.1%	1.00x (?)
MapReduceLazySequence	20345	20553	+1.0%	0.99x
MapReduceSequence	30586	30661	+0.2%	1.00x (?)
MapReduceShort	37472	37981	+1.4%	0.99x (?)
MapReduceShortString	246	252	+2.4%	0.98x (?)
MapReduceString	1762	1760	-0.1%	1.00x (?)
Memset	44128	44105	-0.1%	1.00x (?)
MonteCarloE	1148034	1148911	+0.1%	1.00x (?)
MonteCarloPi	5175626	5221425	+0.9%	0.99x
NSDictionaryCastToSwift	6835	6617	-3.2%	1.03x (?)
NSError	625	644	+3.0%	0.97x (?)
NibbleSort	498921	502541	+0.7%	0.99x
NopDeinit	189826	190531	+0.4%	1.00x
ObjectAllocation	1262	1272	+0.8%	0.99x (?)
ObjectiveCBridgeFromNSArrayAnyObject	29161	29213	+0.2%	1.00x (?)
ObjectiveCBridgeFromNSArrayAnyObjectForced	9195	9460	+2.9%	0.97x (?)
ObjectiveCBridgeFromNSArrayAnyObjectToString	50871	48972	-3.7%	1.04x
ObjectiveCBridgeFromNSDictionaryAnyObject	119027	116403	-2.2%	1.02x
ObjectiveCBridgeFromNSSetAnyObject	53255	54039	+1.5%	0.99x (?)
ObjectiveCBridgeFromNSSetAnyObjectToString	74662	74211	-0.6%	1.01x (?)
ObjectiveCBridgeStubDataAppend	6339	6292	-0.7%	1.01x (?)
ObjectiveCBridgeStubDateMutation	774	773	-0.1%	1.00x
ObjectiveCBridgeStubFromArrayOfNSString	35704	34253	-4.1%	1.04x (?)
ObjectiveCBridgeStubFromNSDate	7004	7062	+0.8%	0.99x (?)
ObjectiveCBridgeStubFromNSStringRef	196	197	+0.5%	0.99x
ObjectiveCBridgeStubNSDataAppend	3090	3032	-1.9%	1.02x (?)
ObjectiveCBridgeStubNSDateMutationRef	16153	16765	+3.8%	0.96x (?)
ObjectiveCBridgeStubToArrayOfNSString	38879	38673	-0.5%	1.01x (?)
ObjectiveCBridgeStubToNSDateRef	3512	3481	-0.9%	1.01x (?)
ObjectiveCBridgeStubToNSStringRef	156	156	+0.0%	1.00x
ObjectiveCBridgeStubURLAppendPath	306182	302271	-1.3%	1.01x (?)
ObjectiveCBridgeStubURLAppendPathRef	306542	302651	-1.3%	1.01x (?)
ObjectiveCBridgeToNSDictionary	28823	28573	-0.9%	1.01x (?)
ObjectiveCBridgeToNSSet	17559	17221	-1.9%	1.02x (?)
ObjectiveCBridgeToNSString	541	538	-0.6%	1.01x
ObserverClosure	6458	6476	+0.3%	1.00x (?)
ObserverForwarderStruct	4387	4361	-0.6%	1.01x (?)
ObserverPartiallyAppliedMethod	8046	8054	+0.1%	1.00x (?)
ObserverUnappliedMethod	8207	8188	-0.2%	1.00x (?)
OpenClose	893	878	-1.7%	1.02x
PartialApplyDynamicType	40786	39222	-3.8%	1.04x
Phonebook	18749	19318	+3.0%	0.97x
PointerArithmetics	117454	117492	+0.0%	1.00x (?)
PolymorphicCalls	2459	2437	-0.9%	1.01x (?)
PopFrontArray	4672	4675	+0.1%	1.00x (?)
PopFrontArrayGeneric	5352	5351	-0.0%	1.00x (?)
PopFrontUnsafePointer	10633	10656	+0.2%	1.00x (?)
PrefixAnyCollection	15408	15449	+0.3%	1.00x (?)
PrefixAnyCollectionLazy	101439	100936	-0.5%	1.00x (?)
PrefixAnySeqCRangeIter	18914	18780	-0.7%	1.01x
PrefixAnySeqCRangeIterLazy	18969	18869	-0.5%	1.01x
PrefixAnySeqCntRange	15472	15406	-0.4%	1.00x (?)
PrefixAnySeqCntRangeLazy	15388	15390	+0.0%	1.00x (?)
PrefixAnySequence	10451	10479	+0.3%	1.00x (?)
PrefixAnySequenceLazy	10473	10514	+0.4%	1.00x (?)
PrefixArray	3449	3447	-0.1%	1.00x (?)
PrefixCountableRange	323	323	+0.0%	1.00x
PrefixCountableRangeLazy	34407	34585	+0.5%	0.99x (?)
PrefixSequence	10093	10109	+0.2%	1.00x (?)
PrefixSequenceLazy	10156	10108	-0.5%	1.00x (?)
PrefixWhileAnyCollection	29011	29247	+0.8%	0.99x (?)
PrefixWhileAnyCollectionLazy	18529	18526	-0.0%	1.00x (?)
PrefixWhileAnySeqCRangeIter	34535	34235	-0.9%	1.01x (?)
PrefixWhileAnySeqCRangeIterLazy	18472	18403	-0.4%	1.00x (?)
PrefixWhileAnySeqCntRange	28840	29041	+0.7%	0.99x
PrefixWhileAnySeqCntRangeLazy	18374	18354	-0.1%	1.00x
PrefixWhileAnySequence	26949	26963	+0.1%	1.00x (?)
PrefixWhileAnySequenceLazy	10983	11060	+0.7%	0.99x
PrefixWhileArray	10550	10533	-0.2%	1.00x
PrefixWhileCountableRange	13765	13986	+1.6%	0.98x
PrefixWhileCountableRangeLazy	18159	18072	-0.5%	1.00x
PrefixWhileSequence	26804	26650	-0.6%	1.01x (?)
PrefixWhileSequenceLazy	10829	10752	-0.7%	1.01x
Prims	9766	9693	-0.7%	1.01x (?)
PrimsSplit	9832	9689	-1.5%	1.01x (?)
QueueConcrete	14340	14477	+1.0%	0.99x
QueueGeneric	18716	19687	+5.2%	0.95x
RC4	16005	16029	+0.1%	1.00x
RGBHistogram	27163	26570	-2.2%	1.02x
RGBHistogramOfObjects	80497	79836	-0.8%	1.01x (?)
RangeAssignment	2649	2639	-0.4%	1.00x (?)
RangeIterationSigned	14386	14863	+3.3%	0.97x
RangeReplaceableCollectionPlusDefault	10943	11159	+2.0%	0.98x (?)
RecursiveOwnedParameter	5897	5875	-0.4%	1.00x (?)
RemoveWhereFilterInts	1937	1951	+0.7%	0.99x
RemoveWhereFilterStrings	2460	2463	+0.1%	1.00x
RemoveWhereMoveInts	3408	3413	+0.1%	1.00x (?)
RemoveWhereMoveStrings	3926	3933	+0.2%	1.00x (?)
RemoveWhereQuadraticInts	8083	8097	+0.2%	1.00x
RemoveWhereQuadraticString	2267	2256	-0.5%	1.00x (?)
RemoveWhereQuadraticStrings	9742	9750	+0.1%	1.00x (?)
RemoveWhereSwapInts	6170	6157	-0.2%	1.00x
RemoveWhereSwapStrings	6859	6866	+0.1%	1.00x (?)
ReversedArray	12976	12973	-0.0%	1.00x (?)
ReversedBidirectional	43120	44108	+2.3%	0.98x (?)
ReversedDictionary	24585	24688	+0.4%	1.00x (?)
SequenceAlgosAnySequence	13013	12990	-0.2%	1.00x (?)
SequenceAlgosArray	755764	794468	+5.1%	0.95x
SequenceAlgosContiguousArray	297460	296829	-0.2%	1.00x (?)
SequenceAlgosList	8693	8721	+0.3%	1.00x
SequenceAlgosRange	1279561	1275556	-0.3%	1.00x
SequenceAlgosUnfoldSequence	6562	6569	+0.1%	1.00x (?)
SetExclusiveOr	17065	17060	-0.0%	1.00x (?)
SetExclusiveOr_OfObjects	39123	39069	-0.1%	1.00x (?)
SetIntersect	6948	6839	-1.6%	1.02x (?)
SetIntersect_OfObjects	9754	9706	-0.5%	1.00x (?)
SetIsSubsetOf	1211	1206	-0.4%	1.00x (?)
SetIsSubsetOf_OfObjects	2171	2166	-0.2%	1.00x (?)
SetUnion	12303	12282	-0.2%	1.00x (?)
SetUnion_OfObjects	28038	28081	+0.2%	1.00x (?)
SevenBoom	1090	1094	+0.4%	1.00x (?)
Sim2DArray	43537	43479	-0.1%	1.00x (?)
SortLargeExistentials	11706	11592	-1.0%	1.01x (?)
SortLettersInPlace	1946	1950	+0.2%	1.00x (?)
SortSortedStrings	1107	1153	+4.2%	0.96x
SortStrings	2243	2336	+4.1%	0.96x
SortStringsUnicode	2749	2780	+1.1%	0.99x
StackPromo	98836	99692	+0.9%	0.99x (?)
StaticArray	2553	2512	-1.6%	1.02x
StrToInt	79472	79301	-0.2%	1.00x (?)
StringBuilder	5537	5584	+0.8%	0.99x (?)
StringBuilderLong	2965	2977	+0.4%	1.00x
StringBuilderWithLongSubstring	4945	5168	+4.5%	0.96x (?)
StringComparison_abnormal	1355	1316	-2.9%	1.03x (?)
StringComparison_ascii	9552	9578	+0.3%	1.00x (?)
StringComparison_emoji	1982	2006	+1.2%	0.99x (?)
StringComparison_fastPrenormal	4988	5006	+0.4%	1.00x (?)
StringComparison_latin1	3902	3886	-0.4%	1.00x (?)
StringComparison_longSharedPrefix	2372	2375	+0.1%	1.00x (?)
StringComparison_nonBMPSlowestPrenormal	3682	3716	+0.9%	0.99x (?)
StringComparison_slowerPrenormal	4136	4246	+2.7%	0.97x (?)
StringComparison_zalgo	127916	127151	-0.6%	1.01x (?)
StringEnumRawValueInitialization	32835	34108	+3.9%	0.96x
StringEqualPointerComparison	1611	1611	+0.0%	1.00x
StringFromLongWholeSubstring	12	12	+0.0%	1.00x
StringFromLongWholeSubstringGeneric	198	200	+1.0%	0.99x
StringHasPrefixAscii	3063	3064	+0.0%	1.00x (?)
StringHasPrefixUnicode	116071	117200	+1.0%	0.99x (?)
StringHasSuffixAscii	3215	3218	+0.1%	1.00x
StringHasSuffixUnicode	108041	105921	-2.0%	1.02x (?)
StringInterpolation	13143	12608	-4.1%	1.04x (?)
StringInterpolationManySmallSegments	20879	20587	-1.4%	1.01x (?)
StringMatch	40422	39957	-1.2%	1.01x (?)
StringRemoveDupes	792	806	+1.8%	0.98x (?)
StringUTF16Builder	8580	8836	+3.0%	0.97x (?)
StringUTF16SubstringBuilder	24201	25387	+4.9%	0.95x
StringWalk	12371	12009	-2.9%	1.03x
StringWordBuilder	2486	2536	+2.0%	0.98x
StringWordBuilderReservingCapacity	2130	2201	+3.3%	0.97x
SubstringEqualString	1738	1736	-0.1%	1.00x (?)
SubstringEquatable	5690	5797	+1.9%	0.98x
SubstringFromLongString	18	18	+0.0%	1.00x
SubstringFromLongStringGeneric	105	105	+0.0%	1.00x
SuffixAnyCollection	5150	5177	+0.5%	0.99x (?)
SuffixAnyCollectionLazy	33020	34187	+3.5%	0.97x (?)
SuffixAnySeqCRangeIter	36577	36468	-0.3%	1.00x (?)
SuffixAnySeqCRangeIterLazy	36600	36462	-0.4%	1.00x (?)
SuffixAnySeqCntRange	5142	5138	-0.1%	1.00x (?)
SuffixAnySeqCntRangeLazy	5147	5143	-0.1%	1.00x (?)
SuffixAnySequence	26677	26534	-0.5%	1.01x
SuffixAnySequenceLazy	26695	26576	-0.4%	1.00x
SuffixCountableRange	113	113	+0.0%	1.00x
SuffixCountableRangeLazy	11478	11543	+0.6%	0.99x (?)
SuffixSequence	26361	26438	+0.3%	1.00x
SuffixSequenceLazy	26693	26707	+0.1%	1.00x (?)
SumUsingReduce	162505	161377	-0.7%	1.01x
SumUsingReduceInto	153427	154128	+0.5%	1.00x
SuperChars	86767	86224	-0.6%	1.01x (?)
TwoSum	3815	3769	-1.2%	1.01x
TypeFlood	209	218	+4.3%	0.96x (?)
UTF8Decode	29770	29756	-0.0%	1.00x (?)
Walsh	11931	11944	+0.1%	1.00x (?)
WordCountHistogramASCII	39971	40106	+0.3%	1.00x (?)
WordCountHistogramUTF16	47827	47234	-1.2%	1.01x (?)
WordCountUniqueASCII	7472	7494	+0.3%	1.00x
WordCountUniqueUTF16	13355	12991	-2.7%	1.03x
WordSplitASCII	12471	11915	-4.5%	1.05x (?)
WordSplitUTF16	14892	14765	-0.9%	1.01x (?)
XorLoop	23239	23231	-0.0%	1.00x (?)

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

milseman · 2018-05-01T00:06:14Z

I filed https://bugs.swift.org/browse/SR-7575 for other views

milseman · 2018-05-01T00:07:37Z

(Those regressions don't repro locally for me)

Define _copyContents on String.UTF8View, which allows it to efficiently memcpy bytes when the String is already in UTF-8 (or ASCII).

milseman · 2018-05-01T00:10:52Z

I want to land #16262 then see benchmarks results again

milseman · 2018-05-01T00:10:57Z

@swift-ci please test

swift-ci · 2018-05-01T00:12:37Z

Build failed
Swift Test Linux Platform
Git Sha - 34141952b4be9d57dd96e9dbef0a36ec7ebe9e35

swift-ci · 2018-05-01T00:20:41Z

Build failed
Swift Test OS X Platform
Git Sha - 34141952b4be9d57dd96e9dbef0a36ec7ebe9e35

milseman · 2018-05-01T14:26:29Z

@swift-ci please smoke benchmark

swift-ci · 2018-05-01T16:25:31Z

Build comment file:

Optimized (O)

Regression (13)

TEST	OLD	NEW	DELTA	SPEEDUP
MapReduce	398	719	+80.7%	0.55x
AngryPhonebook	3726	4335	+16.3%	0.86x
MapReduceSequence	462	527	+14.1%	0.88x
StaticArray	9	10	+11.1%	0.90x
StringComparison_abnormal	774	852	+10.1%	0.91x
CharIndexing_korean_unicodeScalars_Backwards	15679	17259	+10.1%	0.91x (?)
CharIndexing_chinese_unicodeScalars_Backwards	12297	13530	+10.0%	0.91x
ObjectiveCBridgeStubFromArrayOfNSString	34095	37036	+8.6%	0.92x (?)
PrefixWhileSequence	361	391	+8.3%	0.92x
NopDeinit	32248	34590	+7.3%	0.93x
ObjectiveCBridgeFromNSArrayAnyObject	25965	27576	+6.2%	0.94x (?)
NSStringConversion	707	747	+5.7%	0.95x
StringBuilderWithLongSubstring	1501	1585	+5.6%	0.95x (?)

Improvement (9)

TEST	OLD	NEW	DELTA	SPEEDUP
ArrayAppendAscii	14351	3960	-72.4%	3.62x
StringBuilderLong	1790	1353	-24.4%	1.32x (?)
StringUTF16SubstringBuilder	6392	5765	-9.8%	1.11x (?)
ObjectiveCBridgeFromNSSetAnyObjectForced	5154	4767	-7.5%	1.08x (?)
CharIndexing_korean_unicodeScalars	16828	15592	-7.3%	1.08x
ObjectiveCBridgeFromNSArrayAnyObjectForced	5086	4780	-6.0%	1.06x (?)
RemoveWhereQuadraticString	516	487	-5.6%	1.06x (?)
DictionaryBridge	1263	1198	-5.1%	1.05x (?)
ObjectiveCBridgeToNSDictionary	28076	26735	-4.8%	1.05x (?)

No Changes (405)

TEST	OLD	NEW	DELTA	SPEEDUP
AnyHashableWithAClass	84481	85182	+0.8%	0.99x
Array2D	2560	2560	+0.0%	1.00x
ArrayAppend	1108	1124	+1.4%	0.99x
ArrayAppendArrayOfInt	797	804	+0.9%	0.99x (?)
ArrayAppendAsciiSubstring	160243	156535	-2.3%	1.02x
ArrayAppendFromGeneric	798	798	+0.0%	1.00x
ArrayAppendGenericStructs	1426	1425	-0.1%	1.00x (?)
ArrayAppendLatin1	40912	39970	-2.3%	1.02x
ArrayAppendLatin1Substring	285701	288015	+0.8%	0.99x (?)
ArrayAppendLazyMap	1345	1343	-0.1%	1.00x (?)
ArrayAppendOptionals	1439	1427	-0.8%	1.01x
ArrayAppendRepeatCol	1339	1338	-0.1%	1.00x (?)
ArrayAppendReserved	842	841	-0.1%	1.00x
ArrayAppendSequence	1122	1122	+0.0%	1.00x
ArrayAppendStrings	6350	6342	-0.1%	1.00x
ArrayAppendToFromGeneric	799	800	+0.1%	1.00x (?)
ArrayAppendToGeneric	799	801	+0.3%	1.00x (?)
ArrayAppendUTF16	41911	40499	-3.4%	1.03x
ArrayAppendUTF16Substring	286276	281319	-1.7%	1.02x
ArrayInClass	85	86	+1.2%	0.99x
ArrayLiteral	0	0	+0.0%	1.00x
ArrayOfGenericPOD2	151	151	+0.0%	1.00x
ArrayOfGenericRef	4386	4384	-0.0%	1.00x
ArrayOfPOD	184	183	-0.5%	1.01x (?)
ArrayOfRef	4378	4364	-0.3%	1.00x (?)
ArrayPlusEqualArrayOfInt	798	796	-0.3%	1.00x
ArrayPlusEqualFiveElementCollection	5603	5610	+0.1%	1.00x
ArrayPlusEqualSingleElementCollection	1109	1111	+0.2%	1.00x (?)
ArrayPlusEqualThreeElements	1654	1654	+0.0%	1.00x
ArraySubscript	1518	1527	+0.6%	0.99x
ArrayValueProp	8	8	+0.0%	1.00x
ArrayValueProp2	8	8	+0.0%	1.00x
ArrayValueProp3	8	8	+0.0%	1.00x
ArrayValueProp4	8	8	+0.0%	1.00x
BinaryFloatingPointPropertiesBinade	25	25	+0.0%	1.00x
BinaryFloatingPointPropertiesNextUp	28	28	+0.0%	1.00x
BinaryFloatingPointPropertiesUlp	35	35	+0.0%	1.00x
BitCount	202	202	+0.0%	1.00x
ByteSwap	102	101	-1.0%	1.01x
COWTree	5481	5418	-1.1%	1.01x (?)
CSVParsing	712548	713961	+0.2%	1.00x (?)
CSVParsingAlt	793052	785849	-0.9%	1.01x
CSVParsingAltIndices	343702	343668	-0.0%	1.00x (?)
CStringLongAscii	4643	4635	-0.2%	1.00x
CStringLongNonAscii	2157	2269	+5.2%	0.95x
CStringShortAscii	3190	3177	-0.4%	1.00x
Calculator	1098	1131	+3.0%	0.97x
CaptureProp	4116	4122	+0.1%	1.00x (?)
ChainedFilterMap	1409	1409	+0.0%	1.00x
CharIndexing_ascii_unicodeScalars	16090	16106	+0.1%	1.00x (?)
CharIndexing_ascii_unicodeScalars_Backwards	16225	16601	+2.3%	0.98x (?)
CharIndexing_chinese_unicodeScalars	12346	12415	+0.6%	0.99x (?)
CharIndexing_japanese_unicodeScalars	19260	19262	+0.0%	1.00x (?)
CharIndexing_japanese_unicodeScalars_Backwards	19813	20331	+2.6%	0.97x (?)
CharIndexing_punctuatedJapanese_unicodeScalars	2925	2922	-0.1%	1.00x (?)
CharIndexing_punctuatedJapanese_unicodeScalars_Backwards	2937	2943	+0.2%	1.00x
CharIndexing_punctuated_unicodeScalars	3650	3655	+0.1%	1.00x
CharIndexing_punctuated_unicodeScalars_Backwards	3681	3675	-0.2%	1.00x (?)
CharIndexing_russian_unicodeScalars	13415	13798	+2.9%	0.97x (?)
CharIndexing_russian_unicodeScalars_Backwards	13730	13588	-1.0%	1.01x (?)
CharIndexing_tweet_unicodeScalars	33161	32359	-2.4%	1.02x (?)
CharIndexing_tweet_unicodeScalars_Backwards	31957	31933	-0.1%	1.00x (?)
CharIndexing_utf16_unicodeScalars	22702	22701	-0.0%	1.00x (?)
CharIndexing_utf16_unicodeScalars_Backwards	23489	23354	-0.6%	1.01x (?)
CharIteration_ascii_unicodeScalars	20486	20498	+0.1%	1.00x
CharIteration_ascii_unicodeScalars_Backwards	15203	15197	-0.0%	1.00x (?)
CharIteration_chinese_unicodeScalars	15519	15505	-0.1%	1.00x
CharIteration_chinese_unicodeScalars_Backwards	11527	11501	-0.2%	1.00x
CharIteration_japanese_unicodeScalars	24555	24517	-0.2%	1.00x
CharIteration_japanese_unicodeScalars_Backwards	18216	18177	-0.2%	1.00x (?)
CharIteration_korean_unicodeScalars	19860	19873	+0.1%	1.00x (?)
CharIteration_korean_unicodeScalars_Backwards	14764	14724	-0.3%	1.00x
CharIteration_punctuatedJapanese_unicodeScalars	3668	3698	+0.8%	0.99x
CharIteration_punctuatedJapanese_unicodeScalars_Backwards	2760	2758	-0.1%	1.00x
CharIteration_punctuated_unicodeScalars	4595	4633	+0.8%	0.99x
CharIteration_punctuated_unicodeScalars_Backwards	3450	3448	-0.1%	1.00x (?)
CharIteration_russian_unicodeScalars	17086	17051	-0.2%	1.00x (?)
CharIteration_russian_unicodeScalars_Backwards	12667	12661	-0.0%	1.00x (?)
CharIteration_tweet_unicodeScalars	40149	40708	+1.4%	0.99x
CharIteration_tweet_unicodeScalars_Backwards	30083	30050	-0.1%	1.00x (?)
CharIteration_utf16_unicodeScalars	27624	27821	+0.7%	0.99x
CharIteration_utf16_unicodeScalars_Backwards	18229	18328	+0.5%	0.99x
CharacterLiteralsLarge	5834	5870	+0.6%	0.99x (?)
CharacterLiteralsSmall	217	217	+0.0%	1.00x
CharacterPropertiesFetch	4613	4672	+1.3%	0.99x (?)
CharacterPropertiesPrecomputed	1108	1109	+0.1%	1.00x (?)
CharacterPropertiesStashed	1468	1477	+0.6%	0.99x (?)
CharacterPropertiesStashedMemo	1557	1558	+0.1%	1.00x (?)
Chars	1094	1094	+0.0%	1.00x
ClassArrayGetter	15	15	+0.0%	1.00x
Combos	484	487	+0.6%	0.99x (?)
DataAccessBytes	1224	1222	-0.2%	1.00x (?)
DataAppendArray	6529	6481	-0.7%	1.01x (?)
DataAppendBytes	6257	6217	-0.6%	1.01x (?)
DataAppendDataLargeToLarge	71086	71824	+1.0%	0.99x (?)
DataAppendDataLargeToMedium	37253	37221	-0.1%	1.00x (?)
DataAppendDataLargeToSmall	36095	36008	-0.2%	1.00x (?)
DataAppendDataMediumToLarge	40081	39574	-1.3%	1.01x (?)
DataAppendDataMediumToMedium	8352	8373	+0.3%	1.00x (?)
DataAppendDataMediumToSmall	7307	7398	+1.2%	0.99x (?)
DataAppendDataSmallToLarge	38932	38758	-0.4%	1.00x (?)
DataAppendDataSmallToMedium	7815	7826	+0.1%	1.00x (?)
DataAppendDataSmallToSmall	7420	7371	-0.7%	1.01x (?)
DataAppendSequence	19307	19621	+1.6%	0.98x (?)
DataCopyBytes	2552	2548	-0.2%	1.00x (?)
DataCount	38	38	+0.0%	1.00x
DataMutateBytes	4321	4347	+0.6%	0.99x (?)
DataReplaceLarge	42755	43394	+1.5%	0.99x (?)
DataReplaceLargeBuffer	59137	59213	+0.1%	1.00x (?)
DataReplaceMedium	12498	12932	+3.5%	0.97x (?)
DataReplaceMediumBuffer	13114	13100	-0.1%	1.00x (?)
DataReplaceSmall	9428	9108	-3.4%	1.04x (?)
DataReplaceSmallBuffer	9641	9429	-2.2%	1.02x (?)
DataReset	3218	3314	+3.0%	0.97x
DataSetCount	886	894	+0.9%	0.99x
DataSubscript	237	238	+0.4%	1.00x
DictOfArraysToArrayOfDicts	819	813	-0.7%	1.01x (?)
Dictionary	682	688	+0.9%	0.99x
Dictionary2	805	812	+0.9%	0.99x
Dictionary2OfObjects	2209	2214	+0.2%	1.00x (?)
Dictionary3	255	256	+0.4%	1.00x (?)
Dictionary3OfObjects	763	766	+0.4%	1.00x (?)
Dictionary4	338	340	+0.6%	0.99x (?)
Dictionary4Legacy	729	729	+0.0%	1.00x
Dictionary4OfObjects	450	452	+0.4%	1.00x (?)
Dictionary4OfObjectsLegacy	937	941	+0.4%	1.00x
DictionaryCopy	107031	107801	+0.7%	0.99x
DictionaryFilter	107187	107446	+0.2%	1.00x (?)
DictionaryGroup	216	216	+0.0%	1.00x
DictionaryGroupOfObjects	2132	2121	-0.5%	1.01x (?)
DictionaryLiteral	1920	1938	+0.9%	0.99x (?)
DictionaryOfObjects	2444	2443	-0.0%	1.00x (?)
DictionaryRemove	4235	4195	-0.9%	1.01x
DictionaryRemoveOfObjects	26111	26136	+0.1%	1.00x (?)
DictionarySubscriptDefaultMutation	267	266	-0.4%	1.00x
DictionarySubscriptDefaultMutationArray	622	621	-0.2%	1.00x
DictionarySubscriptDefaultMutationArrayOfObjects	4006	4026	+0.5%	1.00x (?)
DictionarySubscriptDefaultMutationOfObjects	1715	1716	+0.1%	1.00x (?)
DictionarySwap	1040	1048	+0.8%	0.99x
DictionarySwapAt	6802	6741	-0.9%	1.01x (?)
DictionarySwapAtOfObjects	52720	52410	-0.6%	1.01x
DictionarySwapOfObjects	8572	8620	+0.6%	0.99x (?)
DoubleWidthDivision	0	0	+0.0%	1.00x
DropFirstAnyCollection	84	84	+0.0%	1.00x
DropFirstAnyCollectionLazy	62404	62642	+0.4%	1.00x (?)
DropFirstAnySeqCRangeIter	21221	21476	+1.2%	0.99x
DropFirstAnySeqCRangeIterLazy	21191	21459	+1.3%	0.99x
DropFirstAnySeqCntRange	41	41	+0.0%	1.00x
DropFirstAnySeqCntRangeLazy	41	41	+0.0%	1.00x
DropFirstAnySequence	5001	4980	-0.4%	1.00x (?)
DropFirstAnySequenceLazy	4953	4984	+0.6%	0.99x
DropFirstArray	35	35	+0.0%	1.00x
DropFirstArrayLazy	35	35	+0.0%	1.00x
DropFirstCountableRange	35	35	+0.0%	1.00x
DropFirstCountableRangeLazy	35	35	+0.0%	1.00x
DropFirstSequence	2682	2681	-0.0%	1.00x (?)
DropFirstSequenceLazy	2777	2774	-0.1%	1.00x (?)
DropLastAnyCollection	31	31	+0.0%	1.00x
DropLastAnyCollectionLazy	21047	20797	-1.2%	1.01x (?)
DropLastAnySeqCRangeIter	3691	3685	-0.2%	1.00x (?)
DropLastAnySeqCRangeIterLazy	3677	3719	+1.1%	0.99x (?)
DropLastAnySeqCntRange	13	13	+0.0%	1.00x
DropLastAnySeqCntRangeLazy	13	13	+0.0%	1.00x
DropLastAnySequence	5072	5088	+0.3%	1.00x
DropLastAnySequenceLazy	5190	5210	+0.4%	1.00x
DropLastCountableRange	11	11	+0.0%	1.00x
DropLastCountableRangeLazy	11	11	+0.0%	1.00x
DropLastSequence	569	577	+1.4%	0.99x (?)
DropLastSequenceLazy	569	576	+1.2%	0.99x
DropWhileAnyCollection	107	107	+0.0%	1.00x
DropWhileAnyCollectionLazy	125	125	+0.0%	1.00x
DropWhileAnySeqCRangeIter	16710	16867	+0.9%	0.99x (?)
DropWhileAnySeqCRangeIterLazy	125	125	+0.0%	1.00x
DropWhileAnySeqCntRange	51	51	+0.0%	1.00x
DropWhileAnySeqCntRangeLazy	125	125	+0.0%	1.00x
DropWhileAnySequence	4844	4864	+0.4%	1.00x (?)
DropWhileAnySequenceLazy	1856	1856	+0.0%	1.00x
DropWhileArrayLazy	88	88	+0.0%	1.00x
DropWhileCountableRange	36	36	+0.0%	1.00x
DropWhileCountableRangeLazy	105	105	+0.0%	1.00x
DropWhileSequence	2223	2222	-0.0%	1.00x (?)
DropWhileSequenceLazy	88	88	+0.0%	1.00x
EqualStringSubstring	56	56	+0.0%	1.00x
EqualSubstringString	64	64	+0.0%	1.00x
EqualSubstringSubstring	49	48	-2.0%	1.02x
EqualSubstringSubstringGenericEquatable	49	48	-2.0%	1.02x
ErrorHandling	1526	1535	+0.6%	0.99x (?)
ExclusivityGlobal	5	5	+0.0%	1.00x
ExclusivityIndependent	2	2	+0.0%	1.00x
FatCompactMap	203550	204775	+0.6%	0.99x
FilterEvenUsingReduce	1314	1309	-0.4%	1.00x
FilterEvenUsingReduceInto	148	149	+0.7%	0.99x (?)
FloatingPointPrinting_Double_description_small	23713	23838	+0.5%	0.99x (?)
FloatingPointPrinting_Double_description_uniform	23626	23279	-1.5%	1.01x (?)
FloatingPointPrinting_Double_interpolated	78686	77927	-1.0%	1.01x (?)
FloatingPointPrinting_Float80_description_small	30699	30834	+0.4%	1.00x (?)
FloatingPointPrinting_Float80_description_uniform	29712	29748	+0.1%	1.00x (?)
FloatingPointPrinting_Float80_interpolated	83113	81831	-1.5%	1.02x (?)
FloatingPointPrinting_Float_description_small	5185	5329	+2.8%	0.97x
FloatingPointPrinting_Float_description_uniform	4976	4970	-0.1%	1.00x (?)
FloatingPointPrinting_Float_interpolated	53168	53330	+0.3%	1.00x (?)
FrequenciesUsingReduce	5028	4907	-2.4%	1.02x (?)
FrequenciesUsingReduceInto	1520	1496	-1.6%	1.02x (?)
Hanoi	2157	2155	-0.1%	1.00x (?)
HashTest	1024	1050	+2.5%	0.98x
Histogram	705	705	+0.0%	1.00x
Integrate	341	350	+2.6%	0.97x
IterateData	1864	1872	+0.4%	1.00x
Join	183	183	+0.0%	1.00x
LazilyFilteredArrayContains	36664	37888	+3.3%	0.97x
LazilyFilteredArrays	67180	65178	-3.0%	1.03x (?)
LazilyFilteredRange	3740	3733	-0.2%	1.00x (?)
LessSubstringSubstring	48	48	+0.0%	1.00x
LessSubstringSubstringGenericComparable	48	48	+0.0%	1.00x
LinkedList	7565	7573	+0.1%	1.00x (?)
LuhnAlgoEager	297	292	-1.7%	1.02x
LuhnAlgoLazy	295	298	+1.0%	0.99x
MapReduceAnyCollection	402	409	+1.7%	0.98x (?)
MapReduceAnyCollectionShort	2267	2277	+0.4%	1.00x (?)
MapReduceClass	3016	3009	-0.2%	1.00x (?)
MapReduceClassShort	4574	4573	-0.0%	1.00x (?)
MapReduceLazyCollection	13	13	+0.0%	1.00x
MapReduceLazyCollectionShort	36	37	+2.8%	0.97x (?)
MapReduceLazySequence	86	86	+0.0%	1.00x
MapReduceShort	2004	2009	+0.2%	1.00x
MapReduceShortString	30	30	+0.0%	1.00x
MapReduceString	79	79	+0.0%	1.00x
Memset	222	221	-0.5%	1.00x (?)
MonteCarloE	10206	10365	+1.6%	0.98x
MonteCarloPi	42686	42818	+0.3%	1.00x
NSDictionaryCastToSwift	5565	5755	+3.4%	0.97x
NSError	171	174	+1.8%	0.98x
NibbleSort	3674	3673	-0.0%	1.00x (?)
ObjectAllocation	132	132	+0.0%	1.00x
ObjectiveCBridgeFromNSArrayAnyObjectToString	45658	45161	-1.1%	1.01x (?)
ObjectiveCBridgeFromNSArrayAnyObjectToStringForced	46521	48582	+4.4%	0.96x (?)
ObjectiveCBridgeFromNSDictionaryAnyObject	124262	118572	-4.6%	1.05x (?)
ObjectiveCBridgeFromNSSetAnyObject	52947	54680	+3.3%	0.97x
ObjectiveCBridgeFromNSSetAnyObjectToString	67351	65000	-3.5%	1.04x (?)
ObjectiveCBridgeFromNSString	1178	1208	+2.5%	0.98x
ObjectiveCBridgeFromNSStringForced	2688	2686	-0.1%	1.00x (?)
ObjectiveCBridgeStubDataAppend	11441	11487	+0.4%	1.00x (?)
ObjectiveCBridgeStubDateMutation	400	401	+0.2%	1.00x
ObjectiveCBridgeStubFromNSDate	6513	6559	+0.7%	0.99x (?)
ObjectiveCBridgeStubFromNSString	1158	1188	+2.6%	0.97x (?)
ObjectiveCBridgeStubFromNSStringRef	156	156	+0.0%	1.00x
ObjectiveCBridgeStubNSDataAppend	2677	2617	-2.2%	1.02x (?)
ObjectiveCBridgeStubNSDateMutationRef	13259	13752	+3.7%	0.96x (?)
ObjectiveCBridgeStubToArrayOfNSString	39023	38845	-0.5%	1.00x (?)
ObjectiveCBridgeStubToNSDate	15151	15568	+2.8%	0.97x (?)
ObjectiveCBridgeStubToNSDateRef	3389	3367	-0.6%	1.01x (?)
ObjectiveCBridgeStubToNSString	2393	2386	-0.3%	1.00x (?)
ObjectiveCBridgeStubToNSStringRef	116	116	+0.0%	1.00x
ObjectiveCBridgeStubURLAppendPath	291017	279072	-4.1%	1.04x (?)
ObjectiveCBridgeStubURLAppendPathRef	296766	290098	-2.2%	1.02x (?)
ObjectiveCBridgeToNSArray	15172	15869	+4.6%	0.96x (?)
ObjectiveCBridgeToNSSet	17641	17392	-1.4%	1.01x (?)
ObjectiveCBridgeToNSString	488	486	-0.4%	1.00x
ObserverClosure	2162	2185	+1.1%	0.99x (?)
ObserverForwarderStruct	1262	1256	-0.5%	1.00x (?)
ObserverPartiallyAppliedMethod	3732	3742	+0.3%	1.00x (?)
ObserverUnappliedMethod	2623	2641	+0.7%	0.99x
OpenClose	260	272	+4.6%	0.96x
PartialApplyDynamicType	0	0	+0.0%	1.00x
Phonebook	4963	5124	+3.2%	0.97x
PointerArithmetics	34393	34360	-0.1%	1.00x (?)
PolymorphicCalls	25	25	+0.0%	1.00x
PopFrontArray	1980	1993	+0.7%	0.99x (?)
PopFrontArrayGeneric	1977	1989	+0.6%	0.99x (?)
PopFrontUnsafePointer	9519	9575	+0.6%	0.99x (?)
PrefixAnyCollection	84	84	+0.0%	1.00x
PrefixAnyCollectionLazy	61552	61630	+0.1%	1.00x (?)
PrefixAnySeqCRangeIter	16527	16698	+1.0%	0.99x
PrefixAnySeqCRangeIterLazy	16527	16698	+1.0%	0.99x
PrefixAnySeqCntRange	28	28	+0.0%	1.00x
PrefixAnySeqCntRangeLazy	28	28	+0.0%	1.00x
PrefixAnySequence	4326	4322	-0.1%	1.00x (?)
PrefixAnySequenceLazy	4325	4319	-0.1%	1.00x
PrefixArray	35	35	+0.0%	1.00x
PrefixArrayLazy	35	35	+0.0%	1.00x
PrefixCountableRange	35	35	+0.0%	1.00x
PrefixCountableRangeLazy	35	35	+0.0%	1.00x
PrefixSequence	2221	2220	-0.0%	1.00x (?)
PrefixSequenceLazy	2278	2275	-0.1%	1.00x (?)
PrefixWhileAnyCollection	154	154	+0.0%	1.00x
PrefixWhileAnyCollectionLazy	90	90	+0.0%	1.00x
PrefixWhileAnySeqCRangeIter	9149	9154	+0.1%	1.00x (?)
PrefixWhileAnySeqCRangeIterLazy	72	72	+0.0%	1.00x
PrefixWhileAnySeqCntRange	59	59	+0.0%	1.00x
PrefixWhileAnySeqCntRangeLazy	90	90	+0.0%	1.00x
PrefixWhileAnySequence	10243	10296	+0.5%	0.99x (?)
PrefixWhileAnySequenceLazy	1394	1393	-0.1%	1.00x
PrefixWhileArray	88	88	+0.0%	1.00x
PrefixWhileArrayLazy	70	70	+0.0%	1.00x
PrefixWhileCountableRange	36	36	+0.0%	1.00x
PrefixWhileCountableRangeLazy	35	35	+0.0%	1.00x
PrefixWhileSequenceLazy	52	52	+0.0%	1.00x
Prims	905	904	-0.1%	1.00x (?)
PrimsSplit	914	917	+0.3%	1.00x (?)
QueueConcrete	1146	1150	+0.3%	1.00x
QueueGeneric	1146	1148	+0.2%	1.00x (?)
RC4	169	169	+0.0%	1.00x
RGBHistogram	3429	3432	+0.1%	1.00x (?)
RGBHistogramOfObjects	24323	24317	-0.0%	1.00x (?)
RangeAssignment	352	354	+0.6%	0.99x
RangeIterationSigned	171	171	+0.0%	1.00x
RangeReplaceableCollectionPlusDefault	991	987	-0.4%	1.00x (?)
RecursiveOwnedParameter	115	115	+0.0%	1.00x
RemoveWhereFilterInts	43	43	+0.0%	1.00x
RemoveWhereFilterString	342	332	-2.9%	1.03x (?)
RemoveWhereFilterStrings	437	437	+0.0%	1.00x
RemoveWhereMoveInts	15	15	+0.0%	1.00x
RemoveWhereMoveStrings	707	708	+0.1%	1.00x (?)
RemoveWhereQuadraticInts	1289	1289	+0.0%	1.00x
RemoveWhereQuadraticStrings	2758	2754	-0.1%	1.00x (?)
RemoveWhereSwapInts	19	19	+0.0%	1.00x
RemoveWhereSwapStrings	856	855	-0.1%	1.00x (?)
ReversedArray	57	58	+1.8%	0.98x
ReversedBidirectional	16596	16367	-1.4%	1.01x
ReversedDictionary	267	262	-1.9%	1.02x (?)
RomanNumbers	139977	139698	-0.2%	1.00x (?)
SequenceAlgosAnySequence	11721	11906	+1.6%	0.98x
SequenceAlgosArray	1576	1581	+0.3%	1.00x (?)
SequenceAlgosContiguousArray	1584	1587	+0.2%	1.00x (?)
SequenceAlgosList	1348	1351	+0.2%	1.00x (?)
SequenceAlgosRange	2577	2577	+0.0%	1.00x
SequenceAlgosUnfoldSequence	1102	1103	+0.1%	1.00x (?)
SetExclusiveOr	5282	5305	+0.4%	1.00x (?)
SetExclusiveOr_OfObjects	11734	11854	+1.0%	0.99x
SetIntersect	699	701	+0.3%	1.00x
SetIntersect_OfObjects	1585	1585	+0.0%	1.00x
SetIsSubsetOf	354	354	+0.0%	1.00x
SetIsSubsetOf_OfObjects	439	438	-0.2%	1.00x
SetUnion	4645	4610	-0.8%	1.01x (?)
SetUnion_OfObjects	10108	10209	+1.0%	0.99x (?)
SevenBoom	888	892	+0.5%	1.00x (?)
Sim2DArray	417	417	+0.0%	1.00x
SortLargeExistentials	6168	6224	+0.9%	0.99x
SortLettersInPlace	1050	1052	+0.2%	1.00x (?)
SortSortedStrings	1014	1032	+1.8%	0.98x
SortStrings	2091	2087	-0.2%	1.00x
SortStringsUnicode	2593	2666	+2.8%	0.97x
StackPromo	22374	22394	+0.1%	1.00x (?)
StrComplexWalk	1783	1784	+0.1%	1.00x (?)
StrToInt	2856	2825	-1.1%	1.01x
StringAdder	749	753	+0.5%	0.99x
StringBuilder	785	794	+1.1%	0.99x
StringComparison_ascii	1255	1291	+2.9%	0.97x
StringComparison_emoji	815	835	+2.5%	0.98x
StringComparison_fastPrenormal	796	804	+1.0%	0.99x
StringComparison_latin1	631	637	+1.0%	0.99x
StringComparison_longSharedPrefix	927	937	+1.1%	0.99x
StringComparison_nonBMPSlowestPrenormal	1603	1628	+1.6%	0.98x
StringComparison_slowerPrenormal	1724	1742	+1.0%	0.99x
StringComparison_zalgo	124692	124011	-0.5%	1.01x
StringEdits	174839	178640	+2.2%	0.98x (?)
StringEnumRawValueInitialization	918	941	+2.5%	0.98x
StringEqualPointerComparison	295	295	+0.0%	1.00x
StringFromLongWholeSubstring	21	21	+0.0%	1.00x
StringFromLongWholeSubstringGeneric	21	21	+0.0%	1.00x
StringHasPrefixAscii	2034	2005	-1.4%	1.01x
StringHasPrefixUnicode	109675	111201	+1.4%	0.99x (?)
StringHasSuffixAscii	2178	2148	-1.4%	1.01x
StringHasSuffixUnicode	114030	114013	-0.0%	1.00x (?)
StringInterpolation	10408	10463	+0.5%	0.99x (?)
StringInterpolationManySmallSegments	19889	19162	-3.7%	1.04x
StringInterpolationSmall	6614	6591	-0.3%	1.00x (?)
StringMatch	11441	11256	-1.6%	1.02x
StringRemoveDupes	680	687	+1.0%	0.99x (?)
StringUTF16Builder	2768	2813	+1.6%	0.98x (?)
StringWalk	1423	1421	-0.1%	1.00x (?)
StringWithCString	41376	40928	-1.1%	1.01x
StringWordBuilder	2388	2351	-1.5%	1.02x (?)
StringWordBuilderReservingCapacity	1911	1949	+2.0%	0.98x
SubstringComparable	26	26	+0.0%	1.00x
SubstringEqualString	788	774	-1.8%	1.02x
SubstringEquatable	1406	1424	+1.3%	0.99x
SubstringFromLongString	10	10	+0.0%	1.00x
SubstringFromLongStringGeneric	75	75	+0.0%	1.00x
SuffixAnyCollection	31	30	-3.2%	1.03x
SuffixAnyCollectionLazy	20908	20759	-0.7%	1.01x (?)
SuffixAnySeqCRangeIter	3886	3884	-0.1%	1.00x (?)
SuffixAnySeqCRangeIterLazy	3881	3899	+0.5%	1.00x
SuffixAnySeqCntRange	20	20	+0.0%	1.00x
SuffixAnySeqCntRangeLazy	21	20	-4.8%	1.05x
SuffixAnySequence	5074	5082	+0.2%	1.00x (?)
SuffixAnySequenceLazy	5189	5229	+0.8%	0.99x
SuffixCountableRange	11	11	+0.0%	1.00x
SuffixCountableRangeLazy	11	11	+0.0%	1.00x
SuffixSequence	3721	3744	+0.6%	0.99x
SuffixSequenceLazy	3730	3748	+0.5%	1.00x
SumUsingReduce	101	102	+1.0%	0.99x
SumUsingReduceInto	98	98	+0.0%	1.00x
SuperChars	14865	14849	-0.1%	1.00x (?)
TwoSum	1494	1490	-0.3%	1.00x (?)
TypeFlood	0	0	+0.0%	1.00x
UTF8Decode	294	295	+0.3%	1.00x
Walsh	406	422	+3.9%	0.96x
WordCountHistogramASCII	7749	7858	+1.4%	0.99x
WordCountHistogramUTF16	14160	14195	+0.2%	1.00x (?)
WordCountUniqueASCII	2145	2178	+1.5%	0.98x
WordCountUniqueUTF16	7335	7363	+0.4%	1.00x (?)
WordSplitASCII	6606	6395	-3.2%	1.03x (?)
WordSplitUTF16	8475	8419	-0.7%	1.01x (?)
XorLoop	398	401	+0.8%	0.99x (?)

Unoptimized (Onone)

Regression (12)

TEST	OLD	NEW	DELTA	SPEEDUP
NopDeinit	199257	259862	+30.4%	0.77x
ObjectiveCBridgeStubFromArrayOfNSString	32441	37193	+14.6%	0.87x
FloatingPointPrinting_Double_interpolated	94712	105876	+11.8%	0.89x
TypeFlood	192	214	+11.5%	0.90x
ObjectiveCBridgeFromNSSetAnyObjectForced	5758	6405	+11.2%	0.90x (?)
ArrayPlusEqualThreeElements	9303	10093	+8.5%	0.92x
DataReplaceSmallBuffer	9113	9877	+8.4%	0.92x (?)
NSDictionaryCastToSwift	6573	7066	+7.5%	0.93x (?)
StrComplexWalk	6836	7267	+6.3%	0.94x
DataAppendDataSmallToSmall	5786	6144	+6.2%	0.94x (?)
ObjectiveCBridgeFromNSSetAnyObject	55418	58634	+5.8%	0.95x (?)
StringComparison_abnormal	1346	1418	+5.3%	0.95x

Improvement (48)

TEST	OLD	NEW	DELTA	SPEEDUP
ArrayAppendAscii	40428	29221	-27.7%	1.38x
CharIndexing_chinese_unicodeScalars	303697	239669	-21.1%	1.27x
CharIndexing_ascii_unicodeScalars	390050	316180	-18.9%	1.23x
CharIndexing_korean_unicodeScalars	382284	309963	-18.9%	1.23x
CharIndexing_russian_unicodeScalars	320104	262080	-18.1%	1.22x
CharacterPropertiesFetch	6612	5440	-17.7%	1.22x (?)
CharIndexing_punctuatedJapanese_unicodeScalars	71069	58753	-17.3%	1.21x
CharIndexing_japanese_unicodeScalars	457743	382576	-16.4%	1.20x
CharIndexing_punctuated_unicodeScalars	85212	71299	-16.3%	1.20x
CharIteration_tweet_unicodeScalars	350426	296661	-15.3%	1.18x
CharIteration_ascii_unicodeScalars_Backwards	325646	280284	-13.9%	1.16x
CharIndexing_tweet_unicodeScalars	768123	661496	-13.9%	1.16x
CharIteration_utf16_unicodeScalars_Backwards	272686	235303	-13.7%	1.16x
CharIteration_russian_unicodeScalars_Backwards	271974	234934	-13.6%	1.16x
CharIndexing_chinese_unicodeScalars_Backwards	337511	291693	-13.6%	1.16x
CharIndexing_utf16_unicodeScalars	321411	279061	-13.2%	1.15x
CharIteration_tweet_unicodeScalars_Backwards	629834	547614	-13.1%	1.15x
CharIteration_korean_unicodeScalars_Backwards	315321	274813	-12.8%	1.15x
CharIteration_punctuatedJapanese_unicodeScalars_Backwards	55830	48704	-12.8%	1.15x
CharIteration_japanese_unicodeScalars_Backwards	378474	332531	-12.1%	1.14x
CharIteration_chinese_unicodeScalars_Backwards	237869	209334	-12.0%	1.14x
CharIndexing_ascii_unicodeScalars_Backwards	437484	385051	-12.0%	1.14x
ObjectiveCBridgeFromNSArrayAnyObjectForced	10352	9183	-11.3%	1.13x (?)
CharIndexing_japanese_unicodeScalars_Backwards	524453	465516	-11.2%	1.13x
CharIndexing_punctuated_unicodeScalars_Backwards	95020	84821	-10.7%	1.12x
DataSetCount	627	561	-10.5%	1.12x
CharIndexing_korean_unicodeScalars_Backwards	417367	374590	-10.2%	1.11x
CharIndexing_russian_unicodeScalars_Backwards	355718	319832	-10.1%	1.11x
CharIteration_punctuated_unicodeScalars_Backwards	70181	63235	-9.9%	1.11x
CharIndexing_punctuatedJapanese_unicodeScalars_Backwards	74953	67888	-9.4%	1.10x
StringWithCString	45207	41311	-8.6%	1.09x
StringWordBuilder	2718	2489	-8.4%	1.09x
ErrorHandling	7336	6725	-8.3%	1.09x (?)
NSError	674	619	-8.2%	1.09x (?)
StringEdits	414757	382705	-7.7%	1.08x
CharIndexing_tweet_unicodeScalars_Backwards	889668	821766	-7.6%	1.08x
CharIndexing_utf16_unicodeScalars_Backwards	350627	323982	-7.6%	1.08x
AngryPhonebook	5985	5532	-7.6%	1.08x (?)
FloatingPointPrinting_Float_interpolated	80147	74171	-7.5%	1.08x (?)
CStringLongAscii	5778	5377	-6.9%	1.07x
ObjectiveCBridgeFromNSArrayAnyObjectToStringForced	48801	45485	-6.8%	1.07x
ObjectiveCBridgeStubURLAppendPathRef	312781	292398	-6.5%	1.07x (?)
ObjectiveCBridgeFromNSStringForced	2983	2805	-6.0%	1.06x
Dictionary4OfObjectsLegacy	2235	2104	-5.9%	1.06x
CharacterPropertiesStashedMemo	4658	4393	-5.7%	1.06x (?)
PrefixAnyCollectionLazy	105960	100316	-5.3%	1.06x (?)
ObjectAllocation	1321	1251	-5.3%	1.06x (?)
ObjectiveCBridgeFromNSDictionaryAnyObject	127740	121119	-5.2%	1.05x (?)

No Changes (367)

TEST	OLD	NEW	DELTA	SPEEDUP
AnyHashableWithAClass	102384	102745	+0.4%	1.00x
Array2D	657343	636303	-3.2%	1.03x
ArrayAppend	4666	4669	+0.1%	1.00x (?)
ArrayAppendArrayOfInt	867	865	-0.2%	1.00x (?)
ArrayAppendAsciiSubstring	182972	182933	-0.0%	1.00x (?)
ArrayAppendFromGeneric	871	862	-1.0%	1.01x (?)
ArrayAppendGenericStructs	1471	1502	+2.1%	0.98x (?)
ArrayAppendLatin1	65351	66252	+1.4%	0.99x
ArrayAppendLatin1Substring	325015	317387	-2.3%	1.02x
ArrayAppendLazyMap	169890	170076	+0.1%	1.00x
ArrayAppendOptionals	1492	1507	+1.0%	0.99x
ArrayAppendRepeatCol	183489	182962	-0.3%	1.00x
ArrayAppendReserved	4281	4281	+0.0%	1.00x
ArrayAppendSequence	103724	105665	+1.9%	0.98x
ArrayAppendStrings	6456	6463	+0.1%	1.00x (?)
ArrayAppendToFromGeneric	868	872	+0.5%	1.00x
ArrayAppendToGeneric	877	883	+0.7%	0.99x (?)
ArrayAppendUTF16	65193	65979	+1.2%	0.99x
ArrayAppendUTF16Substring	320961	319084	-0.6%	1.01x
ArrayInClass	6210	6273	+1.0%	0.99x (?)
ArrayLiteral	1814	1800	-0.8%	1.01x
ArrayOfGenericPOD2	1128	1129	+0.1%	1.00x (?)
ArrayOfGenericRef	10788	10822	+0.3%	1.00x (?)
ArrayOfPOD	761	762	+0.1%	1.00x (?)
ArrayOfRef	10034	9989	-0.4%	1.00x
ArrayPlusEqualArrayOfInt	866	865	-0.1%	1.00x (?)
ArrayPlusEqualFiveElementCollection	237564	243905	+2.7%	0.97x (?)
ArrayPlusEqualSingleElementCollection	234853	240815	+2.5%	0.98x (?)
ArraySubscript	107341	105710	-1.5%	1.02x
ArrayValueProp	3679	3667	-0.3%	1.00x (?)
ArrayValueProp2	15339	15358	+0.1%	1.00x (?)
ArrayValueProp3	4168	4194	+0.6%	0.99x (?)
ArrayValueProp4	4103	4131	+0.7%	0.99x (?)
BinaryFloatingPointPropertiesBinade	88	85	-3.4%	1.04x
BinaryFloatingPointPropertiesNextUp	131	134	+2.3%	0.98x
BinaryFloatingPointPropertiesUlp	131	128	-2.3%	1.02x
BitCount	8896	8889	-0.1%	1.00x
ByteSwap	9652	9669	+0.2%	1.00x
COWTree	12108	12031	-0.6%	1.01x (?)
CSVParsing	2872350	2908219	+1.2%	0.99x
CSVParsingAlt	1417690	1441180	+1.7%	0.98x (?)
CSVParsingAltIndices	2402938	2441531	+1.6%	0.98x (?)
CStringLongNonAscii	2473	2477	+0.2%	1.00x (?)
CStringShortAscii	6265	6206	-0.9%	1.01x (?)
Calculator	2131	2115	-0.8%	1.01x (?)
CaptureProp	276030	279524	+1.3%	0.99x (?)
ChainedFilterMap	233000	233367	+0.2%	1.00x (?)
CharIteration_ascii_unicodeScalars	154179	153891	-0.2%	1.00x (?)
CharIteration_chinese_unicodeScalars	113703	113374	-0.3%	1.00x (?)
CharIteration_japanese_unicodeScalars	179578	179868	+0.2%	1.00x (?)
CharIteration_korean_unicodeScalars	149470	149008	-0.3%	1.00x (?)
CharIteration_punctuatedJapanese_unicodeScalars	27790	27636	-0.6%	1.01x
CharIteration_punctuated_unicodeScalars	34560	34230	-1.0%	1.01x (?)
CharIteration_russian_unicodeScalars	128576	128312	-0.2%	1.00x (?)
CharIteration_utf16_unicodeScalars	127065	127630	+0.4%	1.00x (?)
CharacterLiteralsLarge	5698	5769	+1.2%	0.99x
CharacterLiteralsSmall	701	679	-3.1%	1.03x
CharacterPropertiesPrecomputed	3473	3555	+2.4%	0.98x (?)
CharacterPropertiesStashed	2321	2321	+0.0%	1.00x
Chars	36784	36900	+0.3%	1.00x
ClassArrayGetter	991	993	+0.2%	1.00x (?)
Combos	2406	2317	-3.7%	1.04x (?)
DataAccessBytes	2412	2419	+0.3%	1.00x (?)
DataAppendArray	5508	5579	+1.3%	0.99x (?)
DataAppendBytes	5197	5264	+1.3%	0.99x (?)
DataAppendDataLargeToLarge	67951	69940	+2.9%	0.97x
DataAppendDataLargeToMedium	36075	36390	+0.9%	0.99x (?)
DataAppendDataLargeToSmall	34841	34823	-0.1%	1.00x (?)
DataAppendDataMediumToLarge	38519	38152	-1.0%	1.01x (?)
DataAppendDataMediumToMedium	7513	7319	-2.6%	1.03x (?)
DataAppendDataMediumToSmall	6281	6089	-3.1%	1.03x
DataAppendDataSmallToLarge	37194	37560	+1.0%	0.99x (?)
DataAppendDataSmallToMedium	6775	6787	+0.2%	1.00x (?)
DataAppendSequence	1890921	1904872	+0.7%	0.99x
DataCopyBytes	2630	2640	+0.4%	1.00x (?)
DataCount	223	223	+0.0%	1.00x
DataMutateBytes	5303	5309	+0.1%	1.00x (?)
DataReplaceLarge	38852	40331	+3.8%	0.96x (?)
DataReplaceLargeBuffer	59720	59740	+0.0%	1.00x (?)
DataReplaceMedium	10035	9903	-1.3%	1.01x (?)
DataReplaceMediumBuffer	15239	14692	-3.6%	1.04x
DataReplaceSmall	6866	7110	+3.6%	0.97x (?)
DataReset	2904	2994	+3.1%	0.97x (?)
DataSubscript	444	443	-0.2%	1.00x
DictOfArraysToArrayOfDicts	3555	3509	-1.3%	1.01x (?)
Dictionary	2396	2355	-1.7%	1.02x (?)
Dictionary2	1465	1463	-0.1%	1.00x
Dictionary2OfObjects	4365	4343	-0.5%	1.01x (?)
Dictionary3	870	861	-1.0%	1.01x
Dictionary3OfObjects	2204	2102	-4.6%	1.05x (?)
Dictionary4	1195	1198	+0.3%	1.00x
Dictionary4Legacy	1486	1496	+0.7%	0.99x
Dictionary4OfObjects	1770	1772	+0.1%	1.00x (?)
DictionaryBridge	1336	1345	+0.7%	0.99x (?)
DictionaryCopy	314497	313977	-0.2%	1.00x (?)
DictionaryFilter	324121	326222	+0.6%	0.99x (?)
DictionaryGroup	4454	4465	+0.2%	1.00x
DictionaryGroupOfObjects	7038	7092	+0.8%	0.99x (?)
DictionaryLiteral	8824	8839	+0.2%	1.00x (?)
DictionaryOfObjects	6118	5940	-2.9%	1.03x (?)
DictionaryRemove	19171	19160	-0.1%	1.00x (?)
DictionaryRemoveOfObjects	52006	52958	+1.8%	0.98x (?)
DictionarySubscriptDefaultMutation	1985	1991	+0.3%	1.00x (?)
DictionarySubscriptDefaultMutationArray	2253	2236	-0.8%	1.01x (?)
DictionarySubscriptDefaultMutationArrayOfObjects	9476	9406	-0.7%	1.01x (?)
DictionarySubscriptDefaultMutationOfObjects	5202	5335	+2.6%	0.98x (?)
DictionarySwap	4904	4938	+0.7%	0.99x
DictionarySwapAt	35410	35341	-0.2%	1.00x
DictionarySwapAtOfObjects	114354	114039	-0.3%	1.00x (?)
DictionarySwapOfObjects	18893	19667	+4.1%	0.96x
DoubleWidthDivision	0	0	+0.0%	1.00x
DropFirstAnyCollection	15288	15472	+1.2%	0.99x
DropFirstAnyCollectionLazy	97571	102589	+5.1%	0.95x (?)
DropFirstAnySeqCRangeIter	23683	23836	+0.6%	0.99x
DropFirstAnySeqCRangeIterLazy	23471	23628	+0.7%	0.99x
DropFirstAnySeqCntRange	15397	15436	+0.3%	1.00x (?)
DropFirstAnySeqCntRangeLazy	15252	15311	+0.4%	1.00x (?)
DropFirstAnySequence	12750	12781	+0.2%	1.00x (?)
DropFirstAnySequenceLazy	12941	12860	-0.6%	1.01x
DropFirstArray	3379	3357	-0.7%	1.01x
DropFirstArrayLazy	29261	29305	+0.2%	1.00x
DropFirstCountableRange	323	323	+0.0%	1.00x
DropFirstCountableRangeLazy	33658	34262	+1.8%	0.98x
DropFirstSequence	12469	12396	-0.6%	1.01x
DropFirstSequenceLazy	12607	12612	+0.0%	1.00x (?)
DropLastAnyCollection	5117	5169	+1.0%	0.99x
DropLastAnyCollectionLazy	32854	34363	+4.6%	0.96x (?)
DropLastAnySeqCRangeIter	40432	40638	+0.5%	0.99x
DropLastAnySeqCRangeIterLazy	40865	40878	+0.0%	1.00x (?)
DropLastAnySeqCntRange	5107	5166	+1.2%	0.99x
DropLastAnySeqCntRangeLazy	5106	5123	+0.3%	1.00x
DropLastAnySequence	30713	30657	-0.2%	1.00x
DropLastAnySequenceLazy	30810	30831	+0.1%	1.00x (?)
DropLastCountableRange	112	112	+0.0%	1.00x
DropLastCountableRangeLazy	11214	11423	+1.9%	0.98x (?)
DropLastSequence	30631	30709	+0.3%	1.00x (?)
DropLastSequenceLazy	30449	30494	+0.1%	1.00x (?)
DropWhileAnyCollection	19827	19914	+0.4%	1.00x (?)
DropWhileAnyCollectionLazy	22277	22557	+1.3%	0.99x
DropWhileAnySeqCRangeIter	24385	24502	+0.5%	1.00x
DropWhileAnySeqCRangeIterLazy	22178	22545	+1.7%	0.98x
DropWhileAnySeqCntRange	19646	19883	+1.2%	0.99x
DropWhileAnySeqCntRangeLazy	22218	22458	+1.1%	0.99x
DropWhileAnySequence	13772	13723	-0.4%	1.00x (?)
DropWhileAnySequenceLazy	12287	12304	+0.1%	1.00x (?)
DropWhileArrayLazy	14184	14111	-0.5%	1.01x
DropWhileCountableRange	4788	4862	+1.5%	0.98x
DropWhileCountableRangeLazy	21861	22061	+0.9%	0.99x
DropWhileSequence	13631	13256	-2.8%	1.03x
DropWhileSequenceLazy	11949	11868	-0.7%	1.01x
EqualStringSubstring	76	77	+1.3%	0.99x
EqualSubstringString	76	76	+0.0%	1.00x
EqualSubstringSubstring	72	72	+0.0%	1.00x
EqualSubstringSubstringGenericEquatable	59	58	-1.7%	1.02x
ExclusivityGlobal	191	192	+0.5%	0.99x
ExclusivityIndependent	73	73	+0.0%	1.00x
FatCompactMap	291417	291939	+0.2%	1.00x (?)
FilterEvenUsingReduce	3577	3589	+0.3%	1.00x (?)
FilterEvenUsingReduceInto	1873	1879	+0.3%	1.00x (?)
FloatingPointPrinting_Double_description_small	24239	24257	+0.1%	1.00x (?)
FloatingPointPrinting_Double_description_uniform	35962	35965	+0.0%	1.00x (?)
FloatingPointPrinting_Float80_description_small	31358	31420	+0.2%	1.00x
FloatingPointPrinting_Float80_description_uniform	61424	61519	+0.2%	1.00x (?)
FloatingPointPrinting_Float80_interpolated	119190	120041	+0.7%	0.99x (?)
FloatingPointPrinting_Float_description_small	6499	6738	+3.7%	0.96x
FloatingPointPrinting_Float_description_uniform	17060	17398	+2.0%	0.98x
FrequenciesUsingReduce	11445	11237	-1.8%	1.02x
FrequenciesUsingReduceInto	3190	3280	+2.8%	0.97x (?)
Hanoi	21018	20503	-2.5%	1.03x
HashTest	21335	20988	-1.6%	1.02x (?)
Histogram	6273	6270	-0.0%	1.00x (?)
Integrate	460	460	+0.0%	1.00x
IterateData	5499	5495	-0.1%	1.00x (?)
Join	799	800	+0.1%	1.00x
LazilyFilteredArrayContains	754825	752610	-0.3%	1.00x
LazilyFilteredArrays	1487366	1496322	+0.6%	0.99x
LazilyFilteredRange	529082	535568	+1.2%	0.99x
LessSubstringSubstring	72	72	+0.0%	1.00x
LessSubstringSubstringGenericComparable	59	58	-1.7%	1.02x
LinkedList	32490	32477	-0.0%	1.00x (?)
LuhnAlgoEager	5507	5731	+4.1%	0.96x
LuhnAlgoLazy	5797	5563	-4.0%	1.04x
MapReduce	25607	25522	-0.3%	1.00x
MapReduceAnyCollection	25505	25525	+0.1%	1.00x (?)
MapReduceAnyCollectionShort	37102	36096	-2.7%	1.03x (?)
MapReduceClass	29546	29619	+0.2%	1.00x
MapReduceClassShort	41000	39937	-2.6%	1.03x
MapReduceLazyCollection	24481	24473	-0.0%	1.00x (?)
MapReduceLazyCollectionShort	33302	32944	-1.1%	1.01x (?)
MapReduceLazySequence	20630	20429	-1.0%	1.01x (?)
MapReduceSequence	30240	30504	+0.9%	0.99x (?)
MapReduceShort	36702	37138	+1.2%	0.99x (?)
MapReduceShortString	241	242	+0.4%	1.00x (?)
MapReduceString	1861	1830	-1.7%	1.02x (?)
Memset	44115	44135	+0.0%	1.00x (?)
MonteCarloE	1142355	1129886	-1.1%	1.01x (?)
MonteCarloPi	5181786	5090230	-1.8%	1.02x
NSStringConversion	767	803	+4.7%	0.96x
NibbleSort	498561	498821	+0.1%	1.00x (?)
ObjectiveCBridgeFromNSArrayAnyObject	29109	28614	-1.7%	1.02x (?)
ObjectiveCBridgeFromNSArrayAnyObjectToString	47602	48217	+1.3%	0.99x
ObjectiveCBridgeFromNSSetAnyObjectToString	70982	72876	+2.7%	0.97x (?)
ObjectiveCBridgeFromNSString	2883	2896	+0.5%	1.00x (?)
ObjectiveCBridgeStubDataAppend	6336	6349	+0.2%	1.00x (?)
ObjectiveCBridgeStubDateMutation	773	774	+0.1%	1.00x
ObjectiveCBridgeStubFromNSDate	7894	7885	-0.1%	1.00x (?)
ObjectiveCBridgeStubFromNSString	1102	1109	+0.6%	0.99x (?)
ObjectiveCBridgeStubFromNSStringRef	199	199	+0.0%	1.00x
ObjectiveCBridgeStubNSDataAppend	2965	3077	+3.8%	0.96x (?)
ObjectiveCBridgeStubNSDateMutationRef	16317	15689	-3.8%	1.04x
ObjectiveCBridgeStubToArrayOfNSString	39245	40419	+3.0%	0.97x (?)
ObjectiveCBridgeStubToNSDate	16401	16361	-0.2%	1.00x (?)
ObjectiveCBridgeStubToNSDateRef	3486	3479	-0.2%	1.00x (?)
ObjectiveCBridgeStubToNSString	2416	2436	+0.8%	0.99x (?)
ObjectiveCBridgeStubToNSStringRef	153	154	+0.7%	0.99x (?)
ObjectiveCBridgeStubURLAppendPath	296881	297605	+0.2%	1.00x (?)
ObjectiveCBridgeToNSArray	15727	16516	+5.0%	0.95x (?)
ObjectiveCBridgeToNSDictionary	27860	28277	+1.5%	0.99x (?)
ObjectiveCBridgeToNSSet	17629	18260	+3.6%	0.97x (?)
ObjectiveCBridgeToNSString	531	526	-0.9%	1.01x (?)
ObserverClosure	6464	6487	+0.4%	1.00x (?)
ObserverForwarderStruct	4322	4346	+0.6%	0.99x (?)
ObserverPartiallyAppliedMethod	8051	8028	-0.3%	1.00x (?)
ObserverUnappliedMethod	8193	8200	+0.1%	1.00x (?)
OpenClose	913	903	-1.1%	1.01x (?)
PartialApplyDynamicType	39519	39525	+0.0%	1.00x (?)
Phonebook	18912	18766	-0.8%	1.01x (?)
PointerArithmetics	123191	123174	-0.0%	1.00x (?)
PolymorphicCalls	2376	2394	+0.8%	0.99x
PopFrontArray	4770	4659	-2.3%	1.02x (?)
PopFrontArrayGeneric	5457	5459	+0.0%	1.00x (?)
PopFrontUnsafePointer	11184	11190	+0.1%	1.00x (?)
PrefixAnyCollection	15389	15458	+0.4%	1.00x
PrefixAnySeqCRangeIter	18782	18915	+0.7%	0.99x
PrefixAnySeqCRangeIterLazy	18836	18880	+0.2%	1.00x (?)
PrefixAnySeqCntRange	15325	15454	+0.8%	0.99x
PrefixAnySeqCntRangeLazy	15239	15353	+0.7%	0.99x (?)
PrefixAnySequence	10521	10453	-0.6%	1.01x (?)
PrefixAnySequenceLazy	10562	10551	-0.1%	1.00x (?)
PrefixArray	3378	3343	-1.0%	1.01x
PrefixArrayLazy	29175	29364	+0.6%	0.99x
PrefixCountableRange	323	323	+0.0%	1.00x
PrefixCountableRangeLazy	33686	34252	+1.7%	0.98x
PrefixSequence	10008	10031	+0.2%	1.00x (?)
PrefixSequenceLazy	10057	10082	+0.2%	1.00x (?)
PrefixWhileAnyCollection	28354	28791	+1.5%	0.98x
PrefixWhileAnyCollectionLazy	18279	18429	+0.8%	0.99x
PrefixWhileAnySeqCRangeIter	34080	34248	+0.5%	1.00x (?)
PrefixWhileAnySeqCRangeIterLazy	18134	18314	+1.0%	0.99x
PrefixWhileAnySeqCntRange	28339	28848	+1.8%	0.98x
PrefixWhileAnySeqCntRangeLazy	18232	18418	+1.0%	0.99x
PrefixWhileAnySequence	26787	26554	-0.9%	1.01x
PrefixWhileAnySequenceLazy	10870	10884	+0.1%	1.00x
PrefixWhileArray	10573	10531	-0.4%	1.00x
PrefixWhileArrayLazy	12335	12324	-0.1%	1.00x (?)
PrefixWhileCountableRange	13536	13748	+1.6%	0.98x
PrefixWhileCountableRangeLazy	18080	18317	+1.3%	0.99x
PrefixWhileSequence	26429	26545	+0.4%	1.00x (?)
PrefixWhileSequenceLazy	10681	10545	-1.3%	1.01x
Prims	9487	9413	-0.8%	1.01x (?)
PrimsSplit	9662	10037	+3.9%	0.96x (?)
QueueConcrete	14374	14177	-1.4%	1.01x
QueueGeneric	19010	18645	-1.9%	1.02x
RC4	16061	16134	+0.5%	1.00x
RGBHistogram	24573	24527	-0.2%	1.00x
RGBHistogramOfObjects	79713	79594	-0.1%	1.00x (?)
RangeAssignment	2660	2699	+1.5%	0.99x (?)
RangeIterationSigned	14911	14804	-0.7%	1.01x (?)
RangeReplaceableCollectionPlusDefault	11097	11249	+1.4%	0.99x (?)
RecursiveOwnedParameter	6015	5796	-3.6%	1.04x (?)
RemoveWhereFilterInts	1954	1948	-0.3%	1.00x (?)
RemoveWhereFilterString	1293	1289	-0.3%	1.00x (?)
RemoveWhereFilterStrings	2466	2466	+0.0%	1.00x
RemoveWhereMoveInts	3400	3403	+0.1%	1.00x
RemoveWhereMoveStrings	3926	3927	+0.0%	1.00x (?)
RemoveWhereQuadraticInts	8063	8062	-0.0%	1.00x (?)
RemoveWhereQuadraticString	2250	2253	+0.1%	1.00x (?)
RemoveWhereQuadraticStrings	9703	9724	+0.2%	1.00x (?)
RemoveWhereSwapInts	6137	6139	+0.0%	1.00x
RemoveWhereSwapStrings	6846	6853	+0.1%	1.00x (?)
ReversedArray	13874	13565	-2.2%	1.02x (?)
ReversedBidirectional	43496	43563	+0.2%	1.00x (?)
ReversedDictionary	24806	24870	+0.3%	1.00x
RomanNumbers	1307061	1309156	+0.2%	1.00x (?)
SequenceAlgosAnySequence	12870	13059	+1.5%	0.99x
SequenceAlgosArray	755006	757065	+0.3%	1.00x (?)
SequenceAlgosContiguousArray	288506	290083	+0.5%	0.99x (?)
SequenceAlgosList	8694	8666	-0.3%	1.00x
SequenceAlgosRange	1259861	1279839	+1.6%	0.98x
SequenceAlgosUnfoldSequence	6404	6428	+0.4%	1.00x
SetExclusiveOr	16205	16497	+1.8%	0.98x
SetExclusiveOr_OfObjects	41601	41633	+0.1%	1.00x (?)
SetIntersect	6567	6656	+1.4%	0.99x
SetIntersect_OfObjects	10391	10327	-0.6%	1.01x (?)
SetIsSubsetOf	1177	1178	+0.1%	1.00x (?)
SetIsSubsetOf_OfObjects	2251	2225	-1.2%	1.01x
SetUnion	11776	11819	+0.4%	1.00x
SetUnion_OfObjects	29729	29941	+0.7%	0.99x (?)
SevenBoom	1097	1094	-0.3%	1.00x (?)
Sim2DArray	43509	43467	-0.1%	1.00x
SortLargeExistentials	11763	11657	-0.9%	1.01x (?)
SortLettersInPlace	1950	1961	+0.6%	0.99x (?)
SortSortedStrings	1154	1139	-1.3%	1.01x
SortStrings	2329	2331	+0.1%	1.00x (?)
SortStringsUnicode	2856	2908	+1.8%	0.98x
StackPromo	107938	107681	-0.2%	1.00x (?)
StaticArray	2592	2535	-2.2%	1.02x
StrToInt	81100	79201	-2.3%	1.02x (?)
StringAdder	1175	1127	-4.1%	1.04x
StringBuilder	5540	5566	+0.5%	1.00x (?)
StringBuilderLong	2929	2927	-0.1%	1.00x (?)
StringBuilderWithLongSubstring	5046	5013	-0.7%	1.01x (?)
StringComparison_ascii	10171	10202	+0.3%	1.00x
StringComparison_emoji	2036	2052	+0.8%	0.99x (?)
StringComparison_fastPrenormal	4920	4948	+0.6%	0.99x (?)
StringComparison_latin1	3838	3833	-0.1%	1.00x (?)
StringComparison_longSharedPrefix	2369	2370	+0.0%	1.00x (?)
StringComparison_nonBMPSlowestPrenormal	3900	3905	+0.1%	1.00x (?)
StringComparison_slowerPrenormal	4174	4175	+0.0%	1.00x (?)
StringComparison_zalgo	128506	127181	-1.0%	1.01x
StringEnumRawValueInitialization	32883	33345	+1.4%	0.99x (?)
StringEqualPointerComparison	1655	1656	+0.1%	1.00x
StringFromLongWholeSubstring	12	12	+0.0%	1.00x
StringFromLongWholeSubstringGeneric	202	202	+0.0%	1.00x
StringHasPrefixAscii	3090	3089	-0.0%	1.00x (?)
StringHasPrefixUnicode	116171	118352	+1.9%	0.98x
StringHasSuffixAscii	3207	3335	+4.0%	0.96x
StringHasSuffixUnicode	107009	107057	+0.0%	1.00x (?)
StringInterpolation	12908	12507	-3.1%	1.03x (?)
StringInterpolationManySmallSegments	20902	20729	-0.8%	1.01x (?)
StringInterpolationSmall	8410	8536	+1.5%	0.99x (?)
StringMatch	40292	41098	+2.0%	0.98x
StringRemoveDupes	715	706	-1.3%	1.01x
StringUTF16Builder	8650	8409	-2.8%	1.03x (?)
StringUTF16SubstringBuilder	24919	25088	+0.7%	0.99x (?)
StringWalk	13339	12984	-2.7%	1.03x
StringWordBuilderReservingCapacity	2034	2044	+0.5%	1.00x
SubstringComparable	1633	1632	-0.1%	1.00x (?)
SubstringEqualString	1713	1702	-0.6%	1.01x
SubstringEquatable	5432	5407	-0.5%	1.00x (?)
SubstringFromLongString	18	18	+0.0%	1.00x
SubstringFromLongStringGeneric	121	122	+0.8%	0.99x
SuffixAnyCollection	5093	5173	+1.6%	0.98x
SuffixAnyCollectionLazy	33701	34693	+2.9%	0.97x (?)
SuffixAnySeqCRangeIter	36201	36326	+0.3%	1.00x
SuffixAnySeqCRangeIterLazy	36174	36395	+0.6%	0.99x
SuffixAnySeqCntRange	5101	5168	+1.3%	0.99x
SuffixAnySeqCntRangeLazy	5102	5130	+0.5%	0.99x (?)
SuffixAnySequence	26503	26236	-1.0%	1.01x
SuffixAnySequenceLazy	26587	26230	-1.3%	1.01x (?)
SuffixCountableRange	112	112	+0.0%	1.00x
SuffixCountableRangeLazy	11215	11450	+2.1%	0.98x
SuffixSequence	26330	26225	-0.4%	1.00x
SuffixSequenceLazy	26188	26031	-0.6%	1.01x (?)
SumUsingReduce	159179	160219	+0.7%	0.99x (?)
SumUsingReduceInto	154296	153161	-0.7%	1.01x (?)
SuperChars	85625	88590	+3.5%	0.97x
TwoSum	3515	3535	+0.6%	0.99x (?)
UTF8Decode	29794	29741	-0.2%	1.00x
Walsh	11937	11936	-0.0%	1.00x (?)
WordCountHistogramASCII	38764	38790	+0.1%	1.00x (?)
WordCountHistogramUTF16	46121	46283	+0.4%	1.00x (?)
WordCountUniqueASCII	7268	7187	-1.1%	1.01x (?)
WordCountUniqueUTF16	13228	12941	-2.2%	1.02x
WordSplitASCII	9885	9993	+1.1%	0.99x (?)
WordSplitUTF16	11965	12184	+1.8%	0.98x (?)
XorLoop	23242	23225	-0.1%	1.00x (?)

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

[String] Define _copyContents for UTF8View

17b0ed4

Define _copyContents on String.UTF8View, which allows it to efficiently memcpy bytes when the String is already in UTF-8 (or ASCII).

milseman force-pushed the its_all_about_the_copy_content branch from 3414195 to 17b0ed4 Compare May 1, 2018 00:09

milseman changed the title ~~[WIP] [String] Copy contents for utf8 view~~ [String] Define _copyContents for UTF8View May 1, 2018

milseman requested a review from airspeedswift May 1, 2018 00:10

milseman merged commit 574e556 into swiftlang:master May 1, 2018

milseman deleted the its_all_about_the_copy_content branch May 1, 2018 17:27

milseman mentioned this pull request May 2, 2018

[4.2][String] Define _copyContents for UTF8View #16313

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[String] Define _copyContents for UTF8View #16245

[String] Define _copyContents for UTF8View #16245

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[String] Define _copyContents for UTF8View #16245

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