[stdlib] Implement slice Indices using their base Indices

[airspeedswift]

Resolves this issue:

// FIXME(ABI)#67 (Associated Types with where clauses):
//
//   public typealias Indices = Base.Indices
//   public var indices: Indices { ... }
//
// We can't do it right now because we don't have enough
// constraints on the Base.Indices type in this context.

Now that we are constraining Collection.Indices to be its own slice type we can implement a slice's Indices in terms of it.

[airspeedswift]

@swift-ci please test source compatibility

[airspeedswift]

@swift-ci please test

[airspeedswift]

@swift-ci please smoke benchmark

[airspeedswift]

@swift-ci please smoke test compiler performance

[swift-ci]

Build failed
Swift Test Linux Platform
Git Sha - 138fb8e

[airspeedswift]

@swift-ci please clean test linux platform

[swift-ci]

Build comment file:

Summary for master smoketest

Regressions found (see below)

• Debug
  • PR vs. head (debug)
    • PR vs. head, changed counters (debug)
    • PR vs. head, changed timers (debug)
  • PR vs. baseline (debug)
    • PR vs. baseline, changed counters (debug)
    • PR vs. baseline, changed timers (debug)
• Release
  • PR vs. head (release)
    • PR vs. head, changed counters (release)
    • PR vs. head, changed timers (release)
  • PR vs. baseline (release)
    • PR vs. baseline, changed counters (release)
    • PR vs. baseline, changed timers (release)

Debug

PR vs. head (debug)

PR vs. head, changed counters (debug)

name	old	new	delta	delta_pct
Kingfisher Sema.NumConstraintScopes	316794	316772	-22	-0.01 ✅
ReactiveCocoa Sema.NumLazyIterableDeclContexts	104188	104146	-42	-0.04 ✅
ReactiveSwift Sema.NumGenericSignatureBuilders	15924	15918	-6	-0.04 ✅
Kingfisher Sema.NumLazyIterableDeclContexts	53310	53284	-26	-0.05 ✅
ReactiveCocoa Sema.NumGenericSignatureBuilders	28612	28598	-14	-0.05 ✅
ReactiveSwift Sema.NumConstraintScopes	37802	37766	-36	-0.1 ✅
Kingfisher Sema.NumGenericSignatureBuilders	14655	14639	-16	-0.11 ✅
Kingfisher Sema.NumLazyGenericEnvironments	66662	66558	-104	-0.16 ✅
ReactiveSwift Sema.NumLazyIterableDeclContexts	36455	36395	-60	-0.16 ✅
ReactiveCocoa Sema.NumLazyGenericEnvironments	102524	102354	-170	-0.17 ✅
ReactiveCocoa Sema.NumLazyGenericEnvironmentsLoaded	10108	10090	-18	-0.18 ✅
ReactiveSwift Sema.NumLazyGenericEnvironments	53700	53598	-102	-0.19 ✅
Alamofire Sema.NumLazyIterableDeclContexts	21001	20960	-41	-0.2 ✅
ReactiveSwift Sema.NumLazyGenericEnvironmentsLoaded	7432	7416	-16	-0.22 ✅
ReactiveSwift Sema.NumTypesDeserialized	256278	255528	-750	-0.29 ✅
ReactiveCocoa Sema.NumTypesDeserialized	465188	463728	-1460	-0.31 ✅
ReactiveSwift Sema.NumDeclsDeserialized	305909	304849	-1060	-0.35 ✅
Alamofire Sema.NumGenericSignatureBuilders	5592	5572	-20	-0.36 ✅
ReactiveCocoa Sema.NumDeclsDeserialized	538547	536601	-1946	-0.36 ✅
Kingfisher Sema.NumTypesDeserialized	338267	336621	-1646	-0.49 ✅
Kingfisher Sema.NumDeclsDeserialized	411811	409687	-2124	-0.52 ✅
Kingfisher Sema.NumLazyGenericEnvironmentsLoaded	5364	5336	-28	-0.52 ✅
Alamofire Sema.NumLazyGenericEnvironments	30500	30331	-169	-0.55 ✅
Result Sema.NumLazyIterableDeclContexts	2927	2911	-16	-0.55 ✅
Result Sema.NumGenericSignatureBuilders	780	774	-6	-0.77 ✅
Result Sema.NumLazyGenericEnvironmentsLoaded	490	486	-4	-0.82 ✅
Alamofire Sema.NumLazyGenericEnvironmentsLoaded	2514	2493	-21	-0.84 ✅
Alamofire Sema.NumTypesDeserialized	160597	158733	-1864	-1.16 ✅
Alamofire Sema.NumDeclsDeserialized	201192	198718	-2474	-1.23 ✅
Result Sema.NumLazyGenericEnvironments	4874	4798	-76	-1.56 ✅
Result Sema.NumTypesDeserialized	22598	22122	-476	-2.11 ✅
Result Sema.NumDeclsDeserialized	27253	26579	-674	-2.47 ✅
ReactiveSwift Sema.NumConformancesDeserialized	51956	48022	-3934	-7.57 ✅
ReactiveCocoa Sema.NumConformancesDeserialized	60390	53422	-6968	-11.54 ✅
Kingfisher Sema.NumConformancesDeserialized	77842	66860	-10982	-14.11 ✅
Alamofire Sema.NumConformancesDeserialized	45570	35526	-10044	-22.04 ✅
Result Sema.NumConformancesDeserialized	3342	1934	-1408	-42.13 ✅

PR vs. head, changed timers (debug)

name	old	new	delta	delta_pct

PR vs. baseline (debug)

PR vs. baseline, changed counters (debug)

name	old	new	delta	delta_pct
ReactiveCocoa LLVM.NumLLVMBytesOutput	4779068	6483576	1704508	35.67 ⛔
ReactiveCocoa Sema.NumConstraintScopes	42990	56900	13910	32.36 ⛔
Alamofire Sema.NumConformancesDeserialized	31066	35526	4460	14.36 ⛔
ReactiveCocoa Sema.NumLazyGenericEnvironments	90668	102354	11686	12.89 ⛔
ReactiveCocoa Sema.NumDeclsDeserialized	494586	536601	42015	8.49 ⛔
Alamofire SILModule.NumSILOptFunctions	3908	4236	328	8.39 ⛔
Kingfisher SILModule.NumSILOptFunctions	7512	8109	597	7.95 ⛔
ReactiveCocoa SILModule.NumSILOptFunctions	4068	4306	238	5.85 ⛔
ReactiveSwift Sema.NumLazyGenericEnvironments	50700	53598	2898	5.72 ⛔
Kingfisher LLVM.NumLLVMBytesOutput	4703184	4933624	230440	4.9 ⛔
ReactiveSwift Sema.NumDeclsDeserialized	291650	304849	13199	4.53 ⛔
ReactiveCocoa Sema.NumTypesDeserialized	447708	463728	16020	3.58 ⛔
ReactiveSwift SILModule.NumSILOptFunctions	6970	7212	242	3.47 ⛔
ReactiveSwift LLVM.NumLLVMBytesOutput	8051308	8315176	263868	3.28 ⛔
Alamofire Sema.NumDeclsDeserialized	192907	198718	5811	3.01 ⛔
Alamofire Sema.NumLazyGenericEnvironments	29706	30331	625	2.1 ⛔
Kingfisher Sema.NumLazyGenericEnvironments	65820	66558	738	1.12 ⛔
ReactiveSwift Sema.NumTypesDeserialized	253214	255528	2314	0.91 ⛔
Kingfisher Sema.NumDeclsDeserialized	406293	409687	3394	0.84 ⛔
Alamofire LLVM.NumLLVMBytesOutput	2996100	3019804	23704	0.79 ⛔
ReactiveSwift IRModule.NumIRGlobals	12388	12426	38	0.31 ⛔
ReactiveCocoa IRModule.NumIRGlobals	9536	9534	-2	-0.02 ✅
Alamofire Sema.NumTypesDeserialized	158803	158733	-70	-0.04 ✅
Kingfisher SILModule.NumSILGenFunctions	4186	4182	-4	-0.1 ✅
Alamofire SILModule.NumSILGenFunctions	2463	2460	-3	-0.12 ✅
ReactiveSwift SILModule.NumSILGenFunctions	4833	4819	-14	-0.29 ✅
ReactiveCocoa SILModule.NumSILGenFunctions	2904	2894	-10	-0.34 ✅
ReactiveCocoa AST.NumUsedConformances	704	700	-4	-0.57 ✅
Alamofire AST.NumUsedConformances	435	432	-3	-0.69 ✅
Kingfisher IRModule.NumIRGlobals	9117	9053	-64	-0.7 ✅
ReactiveCocoa Sema.NumLazyGenericEnvironmentsLoaded	10174	10090	-84	-0.83 ✅
ReactiveCocoa AST.NumTotalClangImportedEntities	101754	100824	-930	-0.91 ✅
Kingfisher AST.NumUsedConformances	858	850	-8	-0.93 ✅
Alamofire IRModule.NumIRGlobals	4765	4713	-52	-1.09 ✅
ReactiveSwift AST.NumUsedConformances	730	722	-8	-1.1 ✅
ReactiveCocoa IRModule.NumIRValueSymbols	14686	14472	-214	-1.46 ✅
Alamofire Sema.NumFunctionsTypechecked	5545	5454	-91	-1.64 ✅
ReactiveCocoa Sema.NumFunctionsTypechecked	18516	18200	-316	-1.71 ✅
ReactiveCocoa Sema.NumLazyIterableDeclContexts	105954	104146	-1808	-1.71 ✅
ReactiveSwift IRModule.NumIRValueSymbols	19619	19283	-336	-1.71 ✅
ReactiveCocoa AST.NumImportedExternalDefinitions	34112	33388	-724	-2.12 ✅
Kingfisher Sema.NumTypesDeserialized	344365	336621	-7744	-2.25 ✅
Alamofire Sema.NumLazyIterableDeclContexts	21455	20960	-495	-2.31 ✅
Kingfisher Sema.NumLazyGenericEnvironmentsLoaded	5480	5336	-144	-2.63 ✅
ReactiveCocoa IRModule.NumIRFunctions	7080	6878	-202	-2.85 ✅
Kingfisher Sema.NumLazyIterableDeclContexts	54859	53284	-1575	-2.87 ✅
ReactiveSwift IRModule.NumIRFunctions	10863	10537	-326	-3.0 ✅
ReactiveSwift Sema.NumLazyGenericEnvironmentsLoaded	7646	7416	-230	-3.01 ✅
ReactiveSwift Sema.NumLazyIterableDeclContexts	37546	36395	-1151	-3.07 ✅
ReactiveSwift Sema.NumFunctionsTypechecked	4538	4398	-140	-3.09 ✅
ReactiveCocoa IRModule.NumIRInsts	102753	99493	-3260	-3.17 ✅
ReactiveCocoa IRModule.NumIRBasicBlocks	11870	11490	-380	-3.2 ✅
Alamofire IRModule.NumIRValueSymbols	8767	8470	-297	-3.39 ✅
Kingfisher IRModule.NumIRValueSymbols	14986	14464	-522	-3.48 ✅
ReactiveSwift Sema.NumConformancesDeserialized	49822	48022	-1800	-3.61 ✅
Alamofire IRModule.NumIRFunctions	5357	5119	-238	-4.44 ✅
Kingfisher IRModule.NumIRInsts	194978	184655	-10323	-5.29 ✅
ReactiveSwift IRModule.NumIRInsts	332161	314104	-18057	-5.44 ✅
Alamofire Sema.NumConstraintScopes	43672	41279	-2393	-5.48 ✅
Kingfisher IRModule.NumIRFunctions	8204	7754	-450	-5.49 ✅
Alamofire Sema.NumLazyGenericEnvironmentsLoaded	2641	2493	-148	-5.6 ✅
Kingfisher IRModule.NumIRBasicBlocks	18956	17889	-1067	-5.63 ✅
Kingfisher Sema.NumConformancesDeserialized	70852	66860	-3992	-5.63 ✅
Alamofire AST.NumImportedExternalDefinitions	8501	7982	-519	-6.11 ✅
Kingfisher Sema.NumFunctionsTypechecked	17534	16432	-1102	-6.28 ✅
ReactiveCocoa Sema.NumConformancesDeserialized	57916	53422	-4494	-7.76 ✅
Alamofire IRModule.NumIRBasicBlocks	15117	13942	-1175	-7.77 ✅
Alamofire IRModule.NumIRInsts	145724	134199	-11525	-7.91 ✅
Kingfisher AST.NumImportedExternalDefinitions	28988	26636	-2352	-8.11 ✅
ReactiveSwift Sema.NumConstraintScopes	41650	37766	-3884	-9.33 ✅
Alamofire AST.NumTotalClangImportedEntities	27881	24816	-3065	-10.99 ✅
Kingfisher AST.NumTotalClangImportedEntities	75188	66040	-9148	-12.17 ✅
ReactiveSwift IRModule.NumIRBasicBlocks	21814	19086	-2728	-12.51 ✅
ReactiveSwift AST.NumImportedExternalDefinitions	6434	5566	-868	-13.49 ✅
ReactiveCocoa Sema.NumTypesValidated	49050	40968	-8082	-16.48 ✅
ReactiveSwift Sema.NumTypesValidated	100770	81156	-19614	-19.46 ✅
Alamofire Sema.NumTypesValidated	18298	14335	-3963	-21.66 ✅
Kingfisher Sema.NumTypesValidated	27944	21406	-6538	-23.4 ✅
ReactiveCocoa Sema.NumDeclsValidated	106644	81026	-25618	-24.02 ✅
ReactiveSwift AST.NumTotalClangImportedEntities	24796	18652	-6144	-24.78 ✅
Kingfisher Sema.NumDeclsValidated	125016	83066	-41950	-33.56 ✅
Alamofire Sema.NumDeclsValidated	61341	38708	-22633	-36.9 ✅
ReactiveCocoa Sema.NumGenericSignatureBuilders	49468	28598	-20870	-42.19 ✅
ReactiveSwift Sema.NumDeclsValidated	75348	42528	-32820	-43.56 ✅
Kingfisher Sema.NumConstraintScopes	581970	316772	-265198	-45.57 ✅
ReactiveSwift Sema.NumGenericSignatureBuilders	31134	15918	-15216	-48.87 ✅
Kingfisher Sema.NumGenericSignatureBuilders	33750	14639	-19111	-56.63 ✅
Alamofire Sema.NumGenericSignatureBuilders	13996	5572	-8424	-60.19 ✅

PR vs. baseline, changed timers (debug)

name	old	new	delta	delta_pct

Release

PR vs. head (release)

PR vs. head, changed counters (release)

name	old	new	delta	delta_pct
Kingfisher Sema.NumGenericSignatureBuilders	1595	1599	4	0.25 ⛔
ReactiveSwift Sema.NumGenericSignatureBuilders	2386	2390	4	0.17 ⛔
ReactiveSwift Sema.NumDeclsDeserialized	43870	43931	61	0.14 ⛔
Kingfisher Sema.NumDeclsDeserialized	48142	48203	61	0.13 ⛔
ReactiveCocoa Sema.NumLazyGenericEnvironments	6158	6166	8	0.13 ⛔
ReactiveSwift Sema.NumTypesDeserialized	39621	39661	40	0.1 ⛔
Kingfisher Sema.NumTypesDeserialized	45034	45074	40	0.09 ⛔
Kingfisher Sema.NumConstraintScopes	301104	301082	-22	-0.01 ✅
ReactiveSwift Sema.NumConstraintScopes	34966	34930	-36	-0.1 ✅
Alamofire Sema.NumDeclsDeserialized	24183	24139	-44	-0.18 ✅
Alamofire Sema.NumTypesDeserialized	23086	23035	-51	-0.22 ✅
Alamofire Sema.NumLazyGenericEnvironmentsLoaded	364	363	-1	-0.27 ✅
ReactiveCocoa Sema.NumLazyGenericEnvironmentsLoaded	694	692	-2	-0.29 ✅
ReactiveCocoa Sema.NumDeclsDeserialized	41996	41866	-130	-0.31 ✅
ReactiveCocoa Sema.NumTypesDeserialized	39058	38894	-164	-0.42 ✅
Result Sema.NumLazyGenericEnvironmentsLoaded	338	336	-2	-0.59 ✅
Result Sema.NumLazyIterableDeclContexts	1966	1950	-16	-0.81 ✅
Result Sema.NumGenericSignatureBuilders	584	578	-6	-1.03 ✅
Kingfisher Sema.NumConformancesDeserialized	28676	28342	-334	-1.16 ✅
ReactiveSwift Sema.NumConformancesDeserialized	26178	25798	-380	-1.45 ✅
Result Sema.NumLazyGenericEnvironments	4060	3984	-76	-1.87 ✅
Result Sema.NumTypesDeserialized	20701	20227	-474	-2.29 ✅
Result Sema.NumDeclsDeserialized	24068	23394	-674	-2.8 ✅
Alamofire Sema.NumConformancesDeserialized	15280	14598	-682	-4.46 ✅
ReactiveCocoa Sema.NumConformancesDeserialized	21630	19558	-2072	-9.58 ✅
Result Sema.NumConformancesDeserialized	4944	3536	-1408	-28.48 ✅

PR vs. head, changed timers (release)

name	old	new	delta	delta_pct

PR vs. baseline (release)

PR vs. baseline, changed counters (release)

name	old	new	delta	delta_pct
ReactiveCocoa Sema.NumConstraintScopes	23810	38104	14294	60.03 ⛔
ReactiveCocoa LLVM.NumLLVMBytesOutput	5481964	8760388	3278424	59.8 ⛔
Alamofire AST.NumTotalClangImportedEntities	2920	3234	314	10.75 ⛔
Kingfisher LLVM.NumLLVMBytesOutput	5463388	5948852	485464	8.89 ⛔
Kingfisher AST.NumTotalClangImportedEntities	9086	9816	730	8.03 ⛔
ReactiveSwift LLVM.NumLLVMBytesOutput	9453100	10096544	643444	6.81 ⛔
Alamofire LLVM.NumLLVMBytesOutput	3172424	3354756	182332	5.75 ⛔
ReactiveCocoa SILModule.NumSILOptFunctions	2915	3025	110	3.77 ⛔
ReactiveCocoa AST.NumTotalClangImportedEntities	7270	7434	164	2.26 ⛔
Alamofire SILModule.NumSILOptFunctions	2991	3018	27	0.9 ⛔
ReactiveSwift IRModule.NumIRGlobals	11628	11722	94	0.81 ⛔
Kingfisher SILModule.NumSILOptFunctions	5723	5760	37	0.65 ⛔
Kingfisher IRModule.NumIRGlobals	8627	8672	45	0.52 ⛔
ReactiveCocoa IRModule.NumIRGlobals	8486	8494	8	0.09 ⛔
Alamofire SILModule.NumSILGenFunctions	1861	1860	-1	-0.05 ✅
ReactiveCocoa SILModule.NumSILGenFunctions	1917	1915	-2	-0.1 ✅
ReactiveSwift SILModule.NumSILOptFunctions	6852	6821	-31	-0.45 ✅
ReactiveSwift SILModule.NumSILGenFunctions	3755	3737	-18	-0.48 ✅
Alamofire IRModule.NumIRGlobals	4521	4496	-25	-0.55 ✅
ReactiveSwift AST.NumUsedConformances	732	728	-4	-0.55 ✅
ReactiveCocoa AST.NumUsedConformances	704	700	-4	-0.57 ✅
ReactiveCocoa Sema.NumLazyGenericEnvironments	6206	6166	-40	-0.64 ✅
Alamofire AST.NumUsedConformances	435	432	-3	-0.69 ✅
ReactiveSwift Sema.NumFunctionsTypechecked	1990	1976	-14	-0.7 ✅
ReactiveSwift Sema.NumLazyGenericEnvironments	5192	5144	-48	-0.92 ✅
Kingfisher AST.NumUsedConformances	858	850	-8	-0.93 ✅
Kingfisher Sema.NumDeclsDeserialized	48966	48203	-763	-1.56 ✅
ReactiveCocoa IRModule.NumIRValueSymbols	12322	12104	-218	-1.77 ✅
ReactiveSwift IRModule.NumIRValueSymbols	19993	19626	-367	-1.84 ✅
Alamofire Sema.NumLazyGenericEnvironments	2812	2756	-56	-1.99 ✅
ReactiveCocoa Sema.NumDeclsDeserialized	42725	41866	-859	-2.01 ✅
ReactiveCocoa Sema.NumTypesDeserialized	39744	38894	-850	-2.14 ✅
ReactiveSwift Sema.NumDeclsDeserialized	44916	43931	-985	-2.19 ✅
ReactiveCocoa Sema.NumLazyIterableDeclContexts	3880	3792	-88	-2.27 ✅
Kingfisher Sema.NumTypesDeserialized	46202	45074	-1128	-2.44 ✅
Alamofire Sema.NumDeclsDeserialized	24868	24139	-729	-2.93 ✅
Kingfisher Sema.NumLazyIterableDeclContexts	3642	3531	-111	-3.05 ✅
Alamofire Sema.NumLazyIterableDeclContexts	1716	1663	-53	-3.09 ✅
ReactiveSwift IRModule.NumIRInsts	271570	263013	-8557	-3.15 ✅
ReactiveSwift Sema.NumTypesDeserialized	40951	39661	-1290	-3.15 ✅
Kingfisher IRModule.NumIRValueSymbols	13308	12875	-433	-3.25 ✅
Alamofire Sema.NumTypesDeserialized	23829	23035	-794	-3.33 ✅
Alamofire IRModule.NumIRValueSymbols	7218	6965	-253	-3.51 ✅
ReactiveSwift IRModule.NumIRFunctions	10605	10216	-389	-3.67 ✅
ReactiveSwift Sema.NumConformancesDeserialized	26845	25798	-1047	-3.9 ✅
ReactiveSwift Sema.NumLazyIterableDeclContexts	2982	2861	-121	-4.06 ✅
ReactiveCocoa IRModule.NumIRFunctions	5090	4876	-214	-4.2 ✅
Kingfisher Sema.NumLazyGenericEnvironments	5170	4938	-232	-4.49 ✅
ReactiveCocoa IRModule.NumIRInsts	69895	66747	-3148	-4.5 ✅
Alamofire IRModule.NumIRInsts	123248	117465	-5783	-4.69 ✅
ReactiveCocoa Sema.NumLazyGenericEnvironmentsLoaded	728	692	-36	-4.95 ✅
Alamofire Sema.NumLazyGenericEnvironmentsLoaded	383	363	-20	-5.22 ✅
Alamofire IRModule.NumIRFunctions	3819	3599	-220	-5.76 ✅
Alamofire Sema.NumConstraintScopes	38683	36446	-2237	-5.78 ✅
Kingfisher Sema.NumLazyGenericEnvironmentsLoaded	876	824	-52	-5.94 ✅
Alamofire IRModule.NumIRBasicBlocks	16869	15771	-1098	-6.51 ✅
ReactiveSwift Sema.NumLazyGenericEnvironmentsLoaded	890	832	-58	-6.52 ✅
ReactiveCocoa Sema.NumConformancesDeserialized	20926	19558	-1368	-6.54 ✅
ReactiveCocoa IRModule.NumIRBasicBlocks	9437	8757	-680	-7.21 ✅
Kingfisher IRModule.NumIRFunctions	6265	5807	-458	-7.31 ✅
ReactiveSwift IRModule.NumIRBasicBlocks	23918	22073	-1845	-7.71 ✅
Kingfisher Sema.NumConformancesDeserialized	30795	28342	-2453	-7.97 ✅
ReactiveSwift Sema.NumConstraintScopes	38598	34930	-3668	-9.5 ✅
Kingfisher IRModule.NumIRInsts	189828	170741	-19087	-10.05 ✅
Kingfisher IRModule.NumIRBasicBlocks	25356	22751	-2605	-10.27 ✅
ReactiveSwift Sema.NumTypesValidated	26352	23594	-2758	-10.47 ✅
Alamofire Sema.NumConformancesDeserialized	16433	14598	-1835	-11.17 ✅
ReactiveSwift AST.NumImportedExternalDefinitions	592	512	-80	-13.51 ✅
Alamofire Sema.NumTypesValidated	1977	1592	-385	-19.47 ✅
ReactiveSwift AST.NumTotalClangImportedEntities	2670	2102	-568	-21.27 ✅
Kingfisher Sema.NumTypesValidated	3794	2740	-1054	-27.78 ✅
ReactiveCocoa Sema.NumTypesValidated	4072	2372	-1700	-41.75 ✅
ReactiveSwift Sema.NumGenericSignatureBuilders	4390	2390	-2000	-45.56 ✅
ReactiveCocoa Sema.NumDeclsValidated	20206	10966	-9240	-45.73 ✅
Kingfisher Sema.NumConstraintScopes	564928	301082	-263846	-46.7 ✅
ReactiveCocoa Sema.NumGenericSignatureBuilders	3612	1854	-1758	-48.67 ✅
Alamofire Sema.NumGenericSignatureBuilders	1595	687	-908	-56.93 ✅
Kingfisher Sema.NumGenericSignatureBuilders	3925	1599	-2326	-59.26 ✅
Kingfisher Sema.NumDeclsValidated	35702	14416	-21286	-59.62 ✅
Alamofire Sema.NumDeclsValidated	17283	6831	-10452	-60.48 ✅
ReactiveSwift Sema.NumDeclsValidated	28656	9610	-19046	-66.46 ✅

PR vs. baseline, changed timers (release)

name	old	new	delta	delta_pct

Last baseline commit on smoketest-master-debug.csv

commit 87209ce76c9cb2ac66f7c70383b4179b880718fb
Author: Graydon Hoare 
Date:   Tue Oct 3 23:51:30 2017 -0700

    [cperf-baselines] Reset to swift-4.0-DEVELOPMENT-SNAPSHOT-2017-09-23-a, after last set of stats fixes.

Last baseline commit on smoketest-master-release.csv

commit 87209ce76c9cb2ac66f7c70383b4179b880718fb
Author: Graydon Hoare 
Date:   Tue Oct 3 23:51:30 2017 -0700

    [cperf-baselines] Reset to swift-4.0-DEVELOPMENT-SNAPSHOT-2017-09-23-a, after last set of stats fixes.

---

[airspeedswift]

@swift-ci please test macOS platform

[airspeedswift]

@swift-ci please test source compatibility

[DougGregor]

Do you want to consider the Collection requirement Indices.Indices == Indices as part of this?

[swift-ci]

Build comment file:

Optimized (O)

Improvement (85)

TEST	OLD	NEW	DELTA	SPEEDUP
ArrayValueProp4	6	5	-16.7%	1.20x
MapReduceAnyCollection	400	343	-14.2%	1.17x
CharIteration_korean_unicodeScalars_Backwards	17041	15339	-10.0%	1.11x
Dictionary3	483	442	-8.5%	1.09x
CaptureProp	4745	4344	-8.5%	1.09x
RangeAssignment	356	326	-8.4%	1.09x
CStringLongAscii	5021	4610	-8.2%	1.09x
ArrayAppendRepeatCol	1024	943	-7.9%	1.09x
ArrayPlusEqualFiveElementCollection	4659	4294	-7.8%	1.09x
Dictionary2OfObjects	3379	3115	-7.8%	1.08x
CharIteration_punctuatedJapanese_unicodeScalars	2863	2640	-7.8%	1.08x
MapReduceLazyCollection	13	12	-7.7%	1.08x
ArrayOfGenericRef	4059	3750	-7.6%	1.08x
CharIndexing_punctuatedJapanese_unicodeScalars_Backwards	2138	1977	-7.5%	1.08x
ArrayAppendOptionals	1227	1135	-7.5%	1.08x
Chars	428	396	-7.5%	1.08x
CharIndexing_punctuatedJapanese_unicodeScalars	2552	2365	-7.3%	1.08x
CharIndexing_russian_unicodeScalars	11571	10732	-7.3%	1.08x
MapReduceShort	2020	1874	-7.2%	1.08x
ArraySubscript	1512	1403	-7.2%	1.08x
ObjectiveCBridgeStubToNSDate	14597	13566	-7.1%	1.08x (?)
Dictionary	596	554	-7.0%	1.08x
CharIteration_tweet_unicodeScalars	30861	28714	-7.0%	1.07x
ObjectiveCBridgeFromNSSetAnyObject	65085	60610	-6.9%	1.07x
CharIndexing_punctuated_unicodeScalars_Backwards	2638	2457	-6.9%	1.07x
CharIteration_punctuated_unicodeScalars_Backwards	3826	3564	-6.8%	1.07x
ArrayAppendAscii	20074	18710	-6.8%	1.07x
Dictionary2	1907	1778	-6.8%	1.07x
DropFirstArray	30	28	-6.7%	1.07x
CharIteration_russian_unicodeScalars_Backwards	14108	13174	-6.6%	1.07x
ArrayAppendLazyMap	953	890	-6.6%	1.07x
ObjectiveCBridgeFromNSArrayAnyObject	23055	21536	-6.6%	1.07x
CStringLongNonAscii	2235	2088	-6.6%	1.07x
PrefixWhileSequence	339	317	-6.5%	1.07x
CharIteration_korean_unicodeScalars	15075	14100	-6.5%	1.07x
ArrayAppendLatin1	46288	43313	-6.4%	1.07x
ObjectiveCBridgeFromNSDictionaryAnyObject	122770	114981	-6.3%	1.07x
ObjectiveCBridgeFromNSSetAnyObjectForced	4296	4026	-6.3%	1.07x
ObjectiveCBridgeFromNSDictionaryAnyObjectToStringForced	102813	96403	-6.2%	1.07x
ObjectiveCBridgeFromNSSetAnyObjectToString	68144	63950	-6.2%	1.07x
LessSubstringSubstringGenericComparable	386	363	-6.0%	1.06x
DictionarySwapOfObjects	7370	6931	-6.0%	1.06x
CharIndexing_russian_unicodeScalars_Backwards	9421	8868	-5.9%	1.06x
CharIndexing_korean_unicodeScalars	13245	12468	-5.9%	1.06x
ArraySetElement	428	403	-5.8%	1.06x
Calculator	35	33	-5.7%	1.06x
CharIteration_punctuatedJapanese_unicodeScalars_Backwards	3014	2842	-5.7%	1.06x
NSDictionaryCastToSwift	5264	4964	-5.7%	1.06x
ArrayAppendStrings	15062	14204	-5.7%	1.06x
CharIndexing_punctuated_unicodeScalars	3119	2942	-5.7%	1.06x
DropFirstCountableRangeLazy	18	17	-5.6%	1.06x
DropFirstCountableRange	18	17	-5.6%	1.06x
PrefixCountableRangeLazy	18	17	-5.6%	1.06x
PrefixWhileCountableRangeLazy	18	17	-5.6%	1.06x
ObjectiveCBridgeFromNSString	993	938	-5.5%	1.06x
DictionaryOfObjects	2265	2140	-5.5%	1.06x
FrequenciesUsingReduce	7515	7105	-5.5%	1.06x
PrefixAnyCollection	55	52	-5.5%	1.06x
CharIteration_tweet_unicodeScalars_Backwards	33146	31341	-5.4%	1.06x
CharIndexing_korean_unicodeScalars_Backwards	10888	10306	-5.3%	1.06x
CharIteration_punctuated_unicodeScalars	3476	3295	-5.2%	1.05x
CharIndexing_chinese_unicodeScalars	10286	9751	-5.2%	1.05x
CharIndexing_tweet_unicodeScalars_Backwards	22093	20949	-5.2%	1.05x
ObjectiveCBridgeFromNSArrayAnyObjectToStringForced	33332	31623	-5.1%	1.05x
CharIndexing_japanese_unicodeScalars	16226	15395	-5.1%	1.05x
ArrayOfPOD	176	167	-5.1%	1.05x
ObjectAllocation	177	168	-5.1%	1.05x
CStringShortAscii	4802	4559	-5.1%	1.05x
StringWithCString	61768	58651	-5.0%	1.05x
CharacterLiteralsLarge	5924	5626	-5.0%	1.05x
NSStringConversion	359	341	-5.0%	1.05x (?)
MapReduce	360	342	-5.0%	1.05x
ArrayAppendSequence	906	861	-5.0%	1.05x
AnyHashableWithAClass	68554	65152	-5.0%	1.05x
CharIndexing_ascii_unicodeScalars	13522	12857	-4.9%	1.05x
CharIteration_japanese_unicodeScalars_Backwards	19928	18948	-4.9%	1.05x
ObjectiveCBridgeStubURLAppendPathRef	213641	203191	-4.9%	1.05x
ObjectiveCBridgeFromNSArrayAnyObjectToString	39333	37417	-4.9%	1.05x
SevenBoom	1520	1446	-4.9%	1.05x (?)
DropFirstAnySeqCRangeIterLazy	28031	26669	-4.9%	1.05x
FilterEvenUsingReduceInto	145	138	-4.8%	1.05x
ArrayOfGenericPOD	228	217	-4.8%	1.05x
DictionaryBridge	2662	2534	-4.8%	1.05x
CharIteration_russian_unicodeScalars	12741	12129	-4.8%	1.05x
FrequenciesUsingReduceInto	4110	3914	-4.8%	1.05x

No Changes (245)

TEST	OLD	NEW	DELTA	SPEEDUP
AngryPhonebook	2905	2782	-4.2%	1.04x
Array2D	1996	1912	-4.2%	1.04x (?)
ArrayAppend	1031	1018	-1.3%	1.01x
ArrayAppendArrayOfInt	573	565	-1.4%	1.01x
ArrayAppendFromGeneric	577	565	-2.1%	1.02x
ArrayAppendGenericStructs	1163	1137	-2.2%	1.02x
ArrayAppendReserved	825	800	-3.0%	1.03x
ArrayAppendToFromGeneric	588	564	-4.1%	1.04x
ArrayAppendToGeneric	575	566	-1.6%	1.02x
ArrayAppendUTF16	41609	39636	-4.7%	1.05x
ArrayInClass	63	65	+3.2%	0.97x
ArrayLiteral	0	0	+0.0%	1.00x
ArrayOfRef	3931	3769	-4.1%	1.04x
ArrayPlusEqualArrayOfInt	575	565	-1.7%	1.02x
ArrayPlusEqualSingleElementCollection	1052	1020	-3.0%	1.03x
ArrayPlusEqualThreeElements	1615	1553	-3.8%	1.04x
ArrayValueProp	5	5	+0.0%	1.00x
ArrayValueProp2	5	5	+0.0%	1.00x
ArrayValueProp3	5	5	+0.0%	1.00x
BitCount	140	136	-2.9%	1.03x
ByteSwap	111	107	-3.6%	1.04x
CharIndexing_ascii_unicodeScalars_Backwards	11061	10627	-3.9%	1.04x
CharIndexing_chinese_unicodeScalars_Backwards	8395	8066	-3.9%	1.04x
CharIndexing_japanese_unicodeScalars_Backwards	13213	12726	-3.7%	1.04x
CharIndexing_tweet_unicodeScalars	26441	25406	-3.9%	1.04x
CharIndexing_utf16_unicodeScalars	78664	76911	-2.2%	1.02x
CharIndexing_utf16_unicodeScalars_Backwards	73304	71389	-2.6%	1.03x
CharIteration_ascii_unicodeScalars	15180	14534	-4.3%	1.04x
CharIteration_ascii_unicodeScalars_Backwards	16444	15822	-3.8%	1.04x
CharIteration_chinese_unicodeScalars	11464	11019	-3.9%	1.04x
CharIteration_chinese_unicodeScalars_Backwards	12567	11981	-4.7%	1.05x
CharIteration_japanese_unicodeScalars	18180	17402	-4.3%	1.04x
CharIteration_utf16_unicodeScalars	76294	74266	-2.7%	1.03x
CharIteration_utf16_unicodeScalars_Backwards	112181	108891	-2.9%	1.03x
CharacterLiteralsSmall	391	381	-2.6%	1.03x
ClassArrayGetter	12	12	+0.0%	1.00x
DeadArray	179	171	-4.5%	1.05x
Dictionary3OfObjects	829	792	-4.5%	1.05x
DictionaryGroup	269	260	-3.3%	1.03x
DictionaryGroupOfObjects	1745	1695	-2.9%	1.03x (?)
DictionaryLiteral	1474	1405	-4.7%	1.05x
DictionaryRemove	2413	2370	-1.8%	1.02x
DictionaryRemoveOfObjects	22750	22663	-0.4%	1.00x
DictionarySwap	434	420	-3.2%	1.03x
DropFirstAnyCollection	54	52	-3.7%	1.04x
DropFirstAnyCollectionLazy	73112	71130	-2.7%	1.03x
DropFirstAnySeqCRangeIter	27926	26653	-4.6%	1.05x
DropFirstAnySeqCntRange	48	48	+0.0%	1.00x
DropFirstAnySeqCntRangeLazy	48	48	+0.0%	1.00x
DropFirstAnySequence	5891	5874	-0.3%	1.00x
DropFirstAnySequenceLazy	5901	5871	-0.5%	1.01x
DropFirstArrayLazy	30	29	-3.3%	1.03x
DropFirstSequence	1949	1906	-2.2%	1.02x
DropFirstSequenceLazy	1889	1836	-2.8%	1.03x
DropLastAnyCollection	20	20	+0.0%	1.00x
DropLastAnyCollectionLazy	23869	23776	-0.4%	1.00x (?)
DropLastAnySeqCRangeIter	4466	4451	-0.3%	1.00x (?)
DropLastAnySeqCRangeIterLazy	4508	4451	-1.3%	1.01x
DropLastAnySeqCntRange	15	15	+0.0%	1.00x
DropLastAnySeqCntRangeLazy	15	15	+0.0%	1.00x
DropLastAnySequence	6392	6361	-0.5%	1.00x
DropLastAnySequenceLazy	6350	6317	-0.5%	1.01x
DropLastArray	9	9	+0.0%	1.00x
DropLastArrayLazy	9	9	+0.0%	1.00x
DropLastCountableRange	6	6	+0.0%	1.00x
DropLastCountableRangeLazy	6	6	+0.0%	1.00x
DropLastSequence	575	580	+0.9%	0.99x
DropLastSequenceLazy	575	577	+0.3%	1.00x (?)
DropWhileAnyCollection	65	64	-1.5%	1.02x
DropWhileAnyCollectionLazy	85	84	-1.2%	1.01x
DropWhileAnySeqCRangeIter	21639	21596	-0.2%	1.00x (?)
DropWhileAnySeqCRangeIterLazy	85	85	+0.0%	1.00x
DropWhileAnySeqCntRange	60	60	+0.0%	1.00x
DropWhileAnySeqCntRangeLazy	85	85	+0.0%	1.00x
DropWhileAnySequence	6912	6869	-0.6%	1.01x
DropWhileAnySequenceLazy	1833	1825	-0.4%	1.00x
DropWhileArray	41	41	+0.0%	1.00x
DropWhileArrayLazy	78	77	-1.3%	1.01x
DropWhileCountableRange	18	18	+0.0%	1.00x
DropWhileCountableRangeLazy	67	66	-1.5%	1.02x
DropWhileSequence	1536	1532	-0.3%	1.00x
DropWhileSequenceLazy	44	44	+0.0%	1.00x
EqualStringSubstring	370	365	-1.4%	1.01x
EqualSubstringString	368	366	-0.5%	1.01x
EqualSubstringSubstring	369	364	-1.4%	1.01x
EqualSubstringSubstringGenericEquatable	370	367	-0.8%	1.01x
ErrorHandling	1966	1957	-0.5%	1.00x
ExclusivityGlobal	2	2	+0.0%	1.00x
ExclusivityInMatSet	17	17	+0.0%	1.00x
ExclusivityIndependent	2	2	+0.0%	1.00x
FilterEvenUsingReduce	1248	1215	-2.6%	1.03x
Hanoi	3463	3434	-0.8%	1.01x
HashTest	1617	1550	-4.1%	1.04x
Histogram	274	264	-3.6%	1.04x
Integrate	248	239	-3.6%	1.04x
IterateData	1400	1351	-3.5%	1.04x
Join	382	364	-4.7%	1.05x
LazilyFilteredArrays	64269	62940	-2.1%	1.02x (?)
LazilyFilteredRange	3555	3396	-4.5%	1.05x
LessSubstringSubstring	384	368	-4.2%	1.04x
LinkedList	6738	6596	-2.1%	1.02x
MapReduceAnyCollectionShort	2050	1975	-3.7%	1.04x
MapReduceClass	2965	2900	-2.2%	1.02x
MapReduceClassShort	4408	4294	-2.6%	1.03x (?)
MapReduceLazyCollectionShort	35	34	-2.9%	1.03x
MapReduceLazySequence	87	85	-2.3%	1.02x
MapReduceSequence	435	415	-4.6%	1.05x
MapReduceShortString	21	20	-4.8%	1.05x
MapReduceString	99	102	+3.0%	0.97x
Memset	226	222	-1.8%	1.02x
MonteCarloE	10086	9754	-3.3%	1.03x
MonteCarloPi	42316	41558	-1.8%	1.02x
NSError	293	280	-4.4%	1.05x (?)
NopDeinit	20881	20195	-3.3%	1.03x
ObjectiveCBridgeFromNSArrayAnyObjectForced	3405	3277	-3.8%	1.04x
ObjectiveCBridgeFromNSDictionaryAnyObjectForced	5118	4995	-2.4%	1.02x (?)
ObjectiveCBridgeFromNSDictionaryAnyObjectToString	93671	90100	-3.8%	1.04x
ObjectiveCBridgeFromNSSetAnyObjectToStringForced	68832	65795	-4.4%	1.05x (?)
ObjectiveCBridgeFromNSStringForced	1832	1771	-3.3%	1.03x
ObjectiveCBridgeStubDataAppend	3815	3668	-3.9%	1.04x
ObjectiveCBridgeStubDateAccess	173	171	-1.2%	1.01x
ObjectiveCBridgeStubDateMutation	258	257	-0.4%	1.00x
ObjectiveCBridgeStubFromArrayOfNSString	24356	23796	-2.3%	1.02x
ObjectiveCBridgeStubFromNSDate	3685	3606	-2.1%	1.02x
ObjectiveCBridgeStubFromNSDateRef	3895	3845	-1.3%	1.01x
ObjectiveCBridgeStubFromNSString	525	519	-1.1%	1.01x
ObjectiveCBridgeStubFromNSStringRef	143	138	-3.5%	1.04x
ObjectiveCBridgeStubNSDataAppend	2372	2326	-1.9%	1.02x (?)
ObjectiveCBridgeStubNSDateMutationRef	12309	12601	+2.4%	0.98x (?)
ObjectiveCBridgeStubNSDateRefAccess	304	298	-2.0%	1.02x (?)
ObjectiveCBridgeStubToArrayOfNSString	28815	27926	-3.1%	1.03x
ObjectiveCBridgeStubToNSDateRef	3132	3122	-0.3%	1.00x (?)
ObjectiveCBridgeStubToNSString	1419	1416	-0.2%	1.00x
ObjectiveCBridgeStubToNSStringRef	111	111	+0.0%	1.00x
ObjectiveCBridgeStubURLAppendPath	207123	201955	-2.5%	1.03x (?)
ObjectiveCBridgeToNSArray	29119	28164	-3.3%	1.03x (?)
ObjectiveCBridgeToNSDictionary	45342	44111	-2.7%	1.03x (?)
ObjectiveCBridgeToNSSet	39595	38422	-3.0%	1.03x (?)
ObjectiveCBridgeToNSString	1209	1204	-0.4%	1.00x
ObserverClosure	2217	2194	-1.0%	1.01x (?)
ObserverForwarderStruct	1104	1119	+1.4%	0.99x (?)
ObserverPartiallyAppliedMethod	3609	3582	-0.7%	1.01x
ObserverUnappliedMethod	2540	2555	+0.6%	0.99x (?)
OpenClose	3	3	+0.0%	1.00x
Phonebook	5826	5909	+1.4%	0.99x (?)
PolymorphicCalls	16	16	+0.0%	1.00x
PopFrontArray	1230	1212	-1.5%	1.01x
PopFrontArrayGeneric	1219	1213	-0.5%	1.00x
PopFrontUnsafePointer	5785	5756	-0.5%	1.01x
PrefixAnyCollectionLazy	72706	71474	-1.7%	1.02x
PrefixAnySeqCRangeIter	21021	21062	+0.2%	1.00x (?)
PrefixAnySeqCRangeIterLazy	21012	21079	+0.3%	1.00x (?)
PrefixAnySeqCntRange	48	48	+0.0%	1.00x
PrefixAnySeqCntRangeLazy	48	48	+0.0%	1.00x
PrefixAnySequence	5236	5110	-2.4%	1.02x
PrefixAnySequenceLazy	5255	5127	-2.4%	1.02x
PrefixArray	29	29	+0.0%	1.00x
PrefixArrayLazy	29	29	+0.0%	1.00x
PrefixCountableRange	17	17	+0.0%	1.00x
PrefixSequence	1437	1431	-0.4%	1.00x
PrefixSequenceLazy	1388	1379	-0.6%	1.01x
PrefixWhileAnyCollection	88	87	-1.1%	1.01x
PrefixWhileAnyCollectionLazy	64	62	-3.1%	1.03x
PrefixWhileAnySeqCRangeIter	12662	12454	-1.6%	1.02x (?)
PrefixWhileAnySeqCRangeIterLazy	63	62	-1.6%	1.02x
PrefixWhileAnySeqCntRange	84	83	-1.2%	1.01x
PrefixWhileAnySeqCntRangeLazy	63	62	-1.6%	1.02x
PrefixWhileAnySequence	13643	13554	-0.7%	1.01x
PrefixWhileAnySequenceLazy	1362	1357	-0.4%	1.00x
PrefixWhileArray	71	70	-1.4%	1.01x
PrefixWhileArrayLazy	35	35	+0.0%	1.00x
PrefixWhileCountableRange	28	28	+0.0%	1.00x
PrefixWhileSequenceLazy	26	26	+0.0%	1.00x
Prims	724	713	-1.5%	1.02x
PrimsSplit	747	740	-0.9%	1.01x
ProtocolDispatch	2709	2591	-4.4%	1.05x
ProtocolDispatch2	154	152	-1.3%	1.01x
RC4	150	149	-0.7%	1.01x
RGBHistogram	2090	2075	-0.7%	1.01x
RGBHistogramOfObjects	22268	22020	-1.1%	1.01x
RecursiveOwnedParameter	2195	2178	-0.8%	1.01x (?)
ReversedArray	43	42	-2.3%	1.02x
ReversedBidirectional	27831	27729	-0.4%	1.00x (?)
ReversedDictionary	95	94	-1.1%	1.01x
SetExclusiveOr	2713	2658	-2.0%	1.02x
SetExclusiveOr_OfObjects	7968	7818	-1.9%	1.02x
SetIntersect	249	245	-1.6%	1.02x (?)
SetIntersect_OfObjects	1646	1631	-0.9%	1.01x
SetIsSubsetOf	278	277	-0.4%	1.00x
SetIsSubsetOf_OfObjects	347	346	-0.3%	1.00x
SetUnion	2394	2379	-0.6%	1.01x (?)
SetUnion_OfObjects	6607	6549	-0.9%	1.01x
Sim2DArray	332	328	-1.2%	1.01x
SortLargeExistentials	8032	8053	+0.3%	1.00x (?)
SortLettersInPlace	1088	1077	-1.0%	1.01x
SortSortedStrings	840	832	-1.0%	1.01x
SortStrings	1603	1557	-2.9%	1.03x
SortStringsUnicode	7462	7383	-1.1%	1.01x
StackPromo	21738	21399	-1.6%	1.02x
StaticArray	5	5	+0.0%	1.00x
StrComplexWalk	1564	1556	-0.5%	1.01x
StrToInt	1765	1775	+0.6%	0.99x
StringAdder	3363	3321	-1.2%	1.01x
StringBuilder	939	937	-0.2%	1.00x
StringBuilderLong	878	875	-0.3%	1.00x (?)
StringEdits	130967	129844	-0.9%	1.01x (?)
StringEnumRawValueInitialization	791	768	-2.9%	1.03x
StringEqualPointerComparison	241	230	-4.6%	1.05x
StringFromLongWholeSubstring	172	173	+0.6%	0.99x (?)
StringFromLongWholeSubstringGeneric	21	21	+0.0%	1.00x
StringHasPrefix	8	8	+0.0%	1.00x
StringHasPrefixUnicode	13733	14388	+4.8%	0.95x
StringHasSuffix	8	8	+0.0%	1.00x
StringHasSuffixUnicode	58413	58030	-0.7%	1.01x
StringInterpolation	10358	10416	+0.6%	0.99x (?)
StringMatch	6719	6977	+3.8%	0.96x
StringUTF16Builder	1801	1789	-0.7%	1.01x (?)
StringWalk	1431	1416	-1.0%	1.01x
SubstringComparable	1448	1430	-1.2%	1.01x
SubstringEqualString	1295	1283	-0.9%	1.01x
SubstringEquatable	3395	3355	-1.2%	1.01x
SubstringFromLongString	10	10	+0.0%	1.00x
SubstringFromLongStringGeneric	59	58	-1.7%	1.02x
SuffixAnyCollection	20	20	+0.0%	1.00x
SuffixAnyCollectionLazy	23830	23760	-0.3%	1.00x (?)
SuffixAnySeqCRangeIter	4777	4760	-0.4%	1.00x
SuffixAnySeqCRangeIterLazy	4783	4766	-0.4%	1.00x
SuffixAnySeqCntRange	15	15	+0.0%	1.00x
SuffixAnySeqCntRangeLazy	15	15	+0.0%	1.00x
SuffixAnySequence	6369	6356	-0.2%	1.00x (?)
SuffixAnySequenceLazy	6396	6323	-1.1%	1.01x
SuffixArray	9	9	+0.0%	1.00x
SuffixArrayLazy	9	9	+0.0%	1.00x
SuffixCountableRange	6	6	+0.0%	1.00x
SuffixCountableRangeLazy	6	6	+0.0%	1.00x
SuffixSequence	4420	4416	-0.1%	1.00x
SuffixSequenceLazy	4423	4416	-0.2%	1.00x
SumUsingReduce	92	91	-1.1%	1.01x
SumUsingReduceInto	92	92	+0.0%	1.00x
SuperChars	77382	76652	-0.9%	1.01x (?)
TwoSum	897	886	-1.2%	1.01x
TypeFlood	0	0	+0.0%	1.00x
UTF8Decode	245	243	-0.8%	1.01x
Walsh	380	383	+0.8%	0.99x
XorLoop	329	327	-0.6%	1.01x

Unoptimized (Onone)

Regression (1)

TEST	OLD	NEW	DELTA	SPEEDUP
ArrayOfGenericPOD	1157	1221	+5.5%	0.95x

Improvement (13)

TEST	OLD	NEW	DELTA	SPEEDUP
DropWhileAnySeqCntRangeLazy	30069	27343	-9.1%	1.10x
DictionaryBridge	2791	2550	-8.6%	1.09x
SevenBoom	1667	1548	-7.1%	1.08x
TypeFlood	164	153	-6.7%	1.07x (?)
DeadArray	112803	105363	-6.6%	1.07x (?)
CharIteration_japanese_unicodeScalars_Backwards	385413	360627	-6.4%	1.07x
CharIteration_japanese_unicodeScalars	220652	207730	-5.9%	1.06x
DictionaryGroup	5468	5149	-5.8%	1.06x (?)
DropWhileCountableRangeLazy	27817	26215	-5.8%	1.06x
NSStringConversion	390	368	-5.6%	1.06x
Dictionary	3057	2891	-5.4%	1.06x
CharIteration_korean_unicodeScalars	177094	168255	-5.0%	1.05x
CStringLongAscii	4707	4480	-4.8%	1.05x

No Changes (316)

TEST	OLD	NEW	DELTA	SPEEDUP
AngryPhonebook	4734	4677	-1.2%	1.01x
AnyHashableWithAClass	80597	80227	-0.5%	1.00x
Array2D	603242	599818	-0.6%	1.01x
ArrayAppend	3833	3802	-0.8%	1.01x
ArrayAppendArrayOfInt	623	620	-0.5%	1.00x
ArrayAppendAscii	50987	51032	+0.1%	1.00x (?)
ArrayAppendFromGeneric	627	624	-0.5%	1.00x
ArrayAppendGenericStructs	1203	1197	-0.5%	1.01x
ArrayAppendLatin1	71957	72883	+1.3%	0.99x
ArrayAppendLazyMap	216930	215851	-0.5%	1.00x
ArrayAppendOptionals	1207	1198	-0.7%	1.01x
ArrayAppendRepeatCol	221029	216702	-2.0%	1.02x
ArrayAppendReserved	3613	3570	-1.2%	1.01x
ArrayAppendSequence	73617	72132	-2.0%	1.02x
ArrayAppendStrings	14389	14326	-0.4%	1.00x
ArrayAppendToFromGeneric	626	622	-0.6%	1.01x
ArrayAppendToGeneric	627	624	-0.5%	1.00x
ArrayAppendUTF16	71414	73739	+3.3%	0.97x
ArrayInClass	6340	6343	+0.0%	1.00x (?)
ArrayLiteral	1664	1651	-0.8%	1.01x
ArrayOfGenericRef	9612	9485	-1.3%	1.01x (?)
ArrayOfPOD	678	674	-0.6%	1.01x
ArrayOfRef	8835	8774	-0.7%	1.01x
ArrayPlusEqualArrayOfInt	624	620	-0.6%	1.01x
ArrayPlusEqualFiveElementCollection	295089	291126	-1.3%	1.01x (?)
ArrayPlusEqualSingleElementCollection	291029	289110	-0.7%	1.01x
ArrayPlusEqualThreeElements	10710	10603	-1.0%	1.01x (?)
ArraySetElement	4369	4350	-0.4%	1.00x
ArraySubscript	82523	82226	-0.4%	1.00x (?)
ArrayValueProp	3384	3353	-0.9%	1.01x (?)
ArrayValueProp2	18078	17958	-0.7%	1.01x
ArrayValueProp3	3829	3805	-0.6%	1.01x
ArrayValueProp4	3815	3788	-0.7%	1.01x
BitCount	1611	1596	-0.9%	1.01x
ByteSwap	3807	3786	-0.6%	1.01x (?)
CStringLongNonAscii	2279	2246	-1.4%	1.01x
CStringShortAscii	8341	8231	-1.3%	1.01x (?)
Calculator	1107	1095	-1.1%	1.01x
CaptureProp	119679	118333	-1.1%	1.01x (?)
CharIndexing_ascii_unicodeScalars	464780	450079	-3.2%	1.03x
CharIndexing_ascii_unicodeScalars_Backwards	501823	494771	-1.4%	1.01x (?)
CharIndexing_chinese_unicodeScalars	346571	340018	-1.9%	1.02x (?)
CharIndexing_chinese_unicodeScalars_Backwards	380490	377487	-0.8%	1.01x
CharIndexing_japanese_unicodeScalars	556230	542328	-2.5%	1.03x
CharIndexing_japanese_unicodeScalars_Backwards	597856	591584	-1.0%	1.01x (?)
CharIndexing_korean_unicodeScalars	447399	437372	-2.2%	1.02x (?)
CharIndexing_korean_unicodeScalars_Backwards	482817	475214	-1.6%	1.02x
CharIndexing_punctuatedJapanese_unicodeScalars	82551	80430	-2.6%	1.03x
CharIndexing_punctuatedJapanese_unicodeScalars_Backwards	86697	84980	-2.0%	1.02x
CharIndexing_punctuated_unicodeScalars	102090	98315	-3.7%	1.04x
CharIndexing_punctuated_unicodeScalars_Backwards	112777	107888	-4.3%	1.05x
CharIndexing_russian_unicodeScalars	389515	375724	-3.5%	1.04x
CharIndexing_russian_unicodeScalars_Backwards	422498	410377	-2.9%	1.03x
CharIndexing_tweet_unicodeScalars	915782	889423	-2.9%	1.03x (?)
CharIndexing_tweet_unicodeScalars_Backwards	1000115	970808	-2.9%	1.03x (?)
CharIndexing_utf16_unicodeScalars	502160	497896	-0.8%	1.01x
CharIndexing_utf16_unicodeScalars_Backwards	549505	546853	-0.5%	1.00x (?)
CharIteration_ascii_unicodeScalars	175093	173772	-0.8%	1.01x
CharIteration_ascii_unicodeScalars_Backwards	303354	299155	-1.4%	1.01x
CharIteration_chinese_unicodeScalars	133577	131457	-1.6%	1.02x
CharIteration_chinese_unicodeScalars_Backwards	232224	229484	-1.2%	1.01x (?)
CharIteration_korean_unicodeScalars_Backwards	305537	294003	-3.8%	1.04x
CharIteration_punctuatedJapanese_unicodeScalars	31353	30897	-1.5%	1.01x
CharIteration_punctuatedJapanese_unicodeScalars_Backwards	53893	52820	-2.0%	1.02x (?)
CharIteration_punctuated_unicodeScalars	39413	38763	-1.6%	1.02x
CharIteration_punctuated_unicodeScalars_Backwards	67786	66402	-2.0%	1.02x
CharIteration_russian_unicodeScalars	145735	144780	-0.7%	1.01x
CharIteration_russian_unicodeScalars_Backwards	258226	250239	-3.1%	1.03x
CharIteration_tweet_unicodeScalars	350387	343172	-2.1%	1.02x
CharIteration_tweet_unicodeScalars_Backwards	602459	594533	-1.3%	1.01x (?)
CharIteration_utf16_unicodeScalars	192936	191399	-0.8%	1.01x
CharIteration_utf16_unicodeScalars_Backwards	378286	375304	-0.8%	1.01x
CharacterLiteralsLarge	5895	5822	-1.2%	1.01x (?)
CharacterLiteralsSmall	661	649	-1.8%	1.02x
Chars	47657	47293	-0.8%	1.01x
ClassArrayGetter	974	968	-0.6%	1.01x
Dictionary2	3387	3289	-2.9%	1.03x
Dictionary2OfObjects	5789	5696	-1.6%	1.02x
Dictionary3	1262	1258	-0.3%	1.00x
Dictionary3OfObjects	2243	2177	-2.9%	1.03x
DictionaryGroupOfObjects	7922	7783	-1.8%	1.02x
DictionaryLiteral	8386	8121	-3.2%	1.03x
DictionaryOfObjects	6391	6307	-1.3%	1.01x
DictionaryRemove	21392	20790	-2.8%	1.03x
DictionaryRemoveOfObjects	58040	56108	-3.3%	1.03x
DictionarySwap	5209	5027	-3.5%	1.04x
DictionarySwapOfObjects	22256	21877	-1.7%	1.02x
DropFirstAnyCollection	19680	19237	-2.3%	1.02x (?)
DropFirstAnyCollectionLazy	135687	135274	-0.3%	1.00x (?)
DropFirstAnySeqCRangeIter	29574	29060	-1.7%	1.02x
DropFirstAnySeqCRangeIterLazy	29597	29106	-1.7%	1.02x
DropFirstAnySeqCntRange	19906	19411	-2.5%	1.03x
DropFirstAnySeqCntRangeLazy	19468	19075	-2.0%	1.02x
DropFirstAnySequence	15033	14874	-1.1%	1.01x
DropFirstAnySequenceLazy	15040	14856	-1.2%	1.01x
DropFirstArray	5891	5850	-0.7%	1.01x (?)
DropFirstArrayLazy	43074	42469	-1.4%	1.01x
DropFirstCountableRange	328	322	-1.8%	1.02x
DropFirstCountableRangeLazy	38954	37687	-3.3%	1.03x
DropFirstSequence	14056	13805	-1.8%	1.02x
DropFirstSequenceLazy	13949	13846	-0.7%	1.01x
DropLastAnyCollection	6501	6413	-1.4%	1.01x (?)
DropLastAnyCollectionLazy	45390	45081	-0.7%	1.01x (?)
DropLastAnySeqCRangeIter	45328	44738	-1.3%	1.01x (?)
DropLastAnySeqCRangeIterLazy	44714	44298	-0.9%	1.01x
DropLastAnySeqCntRange	6499	6407	-1.4%	1.01x
DropLastAnySeqCntRangeLazy	6520	6403	-1.8%	1.02x (?)
DropLastAnySequence	32112	31752	-1.1%	1.01x
DropLastAnySequenceLazy	32121	31774	-1.1%	1.01x
DropLastArray	1971	1956	-0.8%	1.01x
DropLastArrayLazy	14305	14188	-0.8%	1.01x (?)
DropLastCountableRange	113	111	-1.8%	1.02x
DropLastCountableRangeLazy	12830	12549	-2.2%	1.02x
DropLastSequence	31703	31385	-1.0%	1.01x
DropLastSequenceLazy	31705	31377	-1.0%	1.01x
DropWhileAnyCollection	25304	25026	-1.1%	1.01x
DropWhileAnyCollectionLazy	27682	27120	-2.0%	1.02x
DropWhileAnySeqCRangeIter	31634	31220	-1.3%	1.01x
DropWhileAnySeqCRangeIterLazy	27662	27157	-1.8%	1.02x (?)
DropWhileAnySeqCntRange	26226	25293	-3.6%	1.04x
DropWhileAnySequence	17950	17666	-1.6%	1.02x (?)
DropWhileAnySequenceLazy	14605	14209	-2.7%	1.03x (?)
DropWhileArray	9664	9439	-2.3%	1.02x
DropWhileArrayLazy	16860	16474	-2.3%	1.02x
DropWhileCountableRange	6371	6095	-4.3%	1.05x
DropWhileSequence	17017	16626	-2.3%	1.02x
DropWhileSequenceLazy	13201	12956	-1.9%	1.02x
EqualStringSubstring	659	640	-2.9%	1.03x
EqualSubstringString	653	638	-2.3%	1.02x
EqualSubstringSubstring	773	763	-1.3%	1.01x
EqualSubstringSubstringGenericEquatable	411	401	-2.4%	1.02x
ErrorHandling	6490	6518	+0.4%	1.00x (?)
ExclusivityGlobal	167	165	-1.2%	1.01x
ExclusivityInMatSet	305	297	-2.6%	1.03x
ExclusivityIndependent	135	133	-1.5%	1.02x
FilterEvenUsingReduce	4152	4129	-0.6%	1.01x (?)
FilterEvenUsingReduceInto	2511	2488	-0.9%	1.01x (?)
FrequenciesUsingReduce	15401	15053	-2.3%	1.02x
FrequenciesUsingReduceInto	8535	8416	-1.4%	1.01x (?)
Hanoi	18331	18120	-1.2%	1.01x
HashTest	16359	16098	-1.6%	1.02x
Histogram	8540	8598	+0.7%	0.99x (?)
Integrate	675	643	-4.7%	1.05x
IterateData	12747	12650	-0.8%	1.01x
Join	1436	1427	-0.6%	1.01x
LazilyFilteredArrays	1662484	1650556	-0.7%	1.01x (?)
LazilyFilteredRange	675273	668292	-1.0%	1.01x
LessSubstringSubstring	770	763	-0.9%	1.01x
LessSubstringSubstringGenericComparable	423	417	-1.4%	1.01x
LinkedList	38436	38202	-0.6%	1.01x
MapReduce	37980	36677	-3.4%	1.04x (?)
MapReduceAnyCollection	37598	36444	-3.1%	1.03x (?)
MapReduceAnyCollectionShort	49333	48739	-1.2%	1.01x
MapReduceClass	41825	41102	-1.7%	1.02x (?)
MapReduceClassShort	52065	51945	-0.2%	1.00x (?)
MapReduceLazyCollection	33768	32760	-3.0%	1.03x
MapReduceLazyCollectionShort	43217	43653	+1.0%	0.99x (?)
MapReduceLazySequence	28196	28261	+0.2%	1.00x (?)
MapReduceSequence	42613	42774	+0.4%	1.00x (?)
MapReduceShort	48900	48857	-0.1%	1.00x (?)
MapReduceShortString	273	269	-1.5%	1.01x (?)
MapReduceString	2575	2579	+0.2%	1.00x (?)
Memset	42106	42097	-0.0%	1.00x (?)
MonteCarloE	893786	897444	+0.4%	1.00x (?)
MonteCarloPi	3850323	3856518	+0.2%	1.00x (?)
NSDictionaryCastToSwift	6077	6131	+0.9%	0.99x
NSError	711	688	-3.2%	1.03x (?)
NopDeinit	161829	163332	+0.9%	0.99x
ObjectAllocation	1431	1387	-3.1%	1.03x (?)
ObjectiveCBridgeFromNSArrayAnyObject	23700	23614	-0.4%	1.00x (?)
ObjectiveCBridgeFromNSArrayAnyObjectForced	6498	6450	-0.7%	1.01x (?)
ObjectiveCBridgeFromNSArrayAnyObjectToString	38560	38368	-0.5%	1.01x (?)
ObjectiveCBridgeFromNSArrayAnyObjectToStringForced	32731	32805	+0.2%	1.00x (?)
ObjectiveCBridgeFromNSDictionaryAnyObject	117026	117135	+0.1%	1.00x (?)
ObjectiveCBridgeFromNSDictionaryAnyObjectForced	7062	7379	+4.5%	0.96x (?)
ObjectiveCBridgeFromNSDictionaryAnyObjectToString	92786	93472	+0.7%	0.99x (?)
ObjectiveCBridgeFromNSDictionaryAnyObjectToStringForced	96904	101565	+4.8%	0.95x
ObjectiveCBridgeFromNSSetAnyObject	65302	65121	-0.3%	1.00x (?)
ObjectiveCBridgeFromNSSetAnyObjectForced	6993	7077	+1.2%	0.99x (?)
ObjectiveCBridgeFromNSSetAnyObjectToString	68731	69721	+1.4%	0.99x (?)
ObjectiveCBridgeFromNSSetAnyObjectToStringForced	69100	69452	+0.5%	0.99x (?)
ObjectiveCBridgeFromNSString	3738	3743	+0.1%	1.00x (?)
ObjectiveCBridgeFromNSStringForced	2094	2133	+1.9%	0.98x (?)
ObjectiveCBridgeStubDataAppend	4123	4263	+3.4%	0.97x (?)
ObjectiveCBridgeStubDateAccess	979	968	-1.1%	1.01x
ObjectiveCBridgeStubDateMutation	526	529	+0.6%	0.99x (?)
ObjectiveCBridgeStubFromArrayOfNSString	23697	23819	+0.5%	0.99x (?)
ObjectiveCBridgeStubFromNSDate	3832	3832	+0.0%	1.00x
ObjectiveCBridgeStubFromNSDateRef	4235	4225	-0.2%	1.00x (?)
ObjectiveCBridgeStubFromNSString	539	551	+2.2%	0.98x (?)
ObjectiveCBridgeStubFromNSStringRef	172	171	-0.6%	1.01x (?)
ObjectiveCBridgeStubNSDataAppend	2838	2750	-3.1%	1.03x (?)
ObjectiveCBridgeStubNSDateMutationRef	14349	14702	+2.5%	0.98x (?)
ObjectiveCBridgeStubNSDateRefAccess	1152	1145	-0.6%	1.01x (?)
ObjectiveCBridgeStubToArrayOfNSString	27883	27586	-1.1%	1.01x (?)
ObjectiveCBridgeStubToNSDate	14720	14134	-4.0%	1.04x
ObjectiveCBridgeStubToNSDateRef	3143	3160	+0.5%	0.99x (?)
ObjectiveCBridgeStubToNSString	1464	1466	+0.1%	1.00x (?)
ObjectiveCBridgeStubToNSStringRef	139	139	+0.0%	1.00x
ObjectiveCBridgeStubURLAppendPath	207012	207668	+0.3%	1.00x (?)
ObjectiveCBridgeStubURLAppendPathRef	205892	207721	+0.9%	0.99x (?)
ObjectiveCBridgeToNSArray	27714	27834	+0.4%	1.00x (?)
ObjectiveCBridgeToNSDictionary	45327	45372	+0.1%	1.00x (?)
ObjectiveCBridgeToNSSet	38720	38428	-0.8%	1.01x (?)
ObjectiveCBridgeToNSString	1227	1231	+0.3%	1.00x (?)
ObserverClosure	6557	6552	-0.1%	1.00x (?)
ObserverForwarderStruct	4801	4805	+0.1%	1.00x (?)
ObserverPartiallyAppliedMethod	7948	7928	-0.3%	1.00x (?)
ObserverUnappliedMethod	8267	8363	+1.2%	0.99x (?)
OpenClose	373	373	+0.0%	1.00x
Phonebook	20535	20334	-1.0%	1.01x
PolymorphicCalls	4860	4868	+0.2%	1.00x (?)
PopFrontArray	9697	9716	+0.2%	1.00x
PopFrontArrayGeneric	8760	8761	+0.0%	1.00x (?)
PopFrontUnsafePointer	7133	7120	-0.2%	1.00x
PrefixAnyCollection	19111	19202	+0.5%	1.00x
PrefixAnyCollectionLazy	133722	134915	+0.9%	0.99x
PrefixAnySeqCRangeIter	23189	23242	+0.2%	1.00x (?)
PrefixAnySeqCRangeIterLazy	23420	23470	+0.2%	1.00x (?)
PrefixAnySeqCntRange	19401	19438	+0.2%	1.00x
PrefixAnySeqCntRangeLazy	19135	19062	-0.4%	1.00x (?)
PrefixAnySequence	12164	11997	-1.4%	1.01x
PrefixAnySequenceLazy	12152	12077	-0.6%	1.01x
PrefixArray	6049	6048	-0.0%	1.00x (?)
PrefixArrayLazy	42491	42533	+0.1%	1.00x (?)
PrefixCountableRange	322	322	+0.0%	1.00x
PrefixCountableRangeLazy	37559	37666	+0.3%	1.00x (?)
PrefixSequence	11157	11110	-0.4%	1.00x (?)
PrefixSequenceLazy	11120	11121	+0.0%	1.00x (?)
PrefixWhileAnyCollection	36680	36720	+0.1%	1.00x (?)
PrefixWhileAnyCollectionLazy	22314	22389	+0.3%	1.00x
PrefixWhileAnySeqCRangeIter	40351	40501	+0.4%	1.00x (?)
PrefixWhileAnySeqCRangeIterLazy	22567	22268	-1.3%	1.01x (?)
PrefixWhileAnySeqCntRange	36899	36830	-0.2%	1.00x
PrefixWhileAnySeqCntRangeLazy	22446	22456	+0.0%	1.00x (?)
PrefixWhileAnySequence	30835	30913	+0.3%	1.00x (?)
PrefixWhileAnySequenceLazy	12571	12573	+0.0%	1.00x (?)
PrefixWhileArray	16319	16361	+0.3%	1.00x (?)
PrefixWhileArrayLazy	14384	14388	+0.0%	1.00x (?)
PrefixWhileCountableRange	17762	17600	-0.9%	1.01x
PrefixWhileCountableRangeLazy	21598	21652	+0.3%	1.00x
PrefixWhileSequence	29791	29943	+0.5%	0.99x
PrefixWhileSequenceLazy	11718	11620	-0.8%	1.01x (?)
Prims	10098	10006	-0.9%	1.01x (?)
PrimsSplit	10164	10173	+0.1%	1.00x (?)
ProtocolDispatch	7203	7183	-0.3%	1.00x
ProtocolDispatch2	474	474	+0.0%	1.00x
RC4	17725	17623	-0.6%	1.01x
RGBHistogram	32469	32706	+0.7%	0.99x (?)
RGBHistogramOfObjects	100103	100200	+0.1%	1.00x (?)
RangeAssignment	5347	5413	+1.2%	0.99x
RecursiveOwnedParameter	10182	10176	-0.1%	1.00x (?)
ReversedArray	41051	41138	+0.2%	1.00x
ReversedBidirectional	70924	71301	+0.5%	0.99x (?)
ReversedDictionary	27253	27407	+0.6%	0.99x
SetExclusiveOr	21714	21702	-0.1%	1.00x (?)
SetExclusiveOr_OfObjects	45871	45550	-0.7%	1.01x
SetIntersect	11835	11863	+0.2%	1.00x (?)
SetIntersect_OfObjects	11990	11890	-0.8%	1.01x
SetIsSubsetOf	1801	1795	-0.3%	1.00x
SetIsSubsetOf_OfObjects	1463	1465	+0.1%	1.00x (?)
SetUnion	11318	11315	-0.0%	1.00x (?)
SetUnion_OfObjects	32095	32128	+0.1%	1.00x (?)
Sim2DArray	41631	41506	-0.3%	1.00x (?)
SortLargeExistentials	16488	16404	-0.5%	1.01x
SortLettersInPlace	2896	2884	-0.4%	1.00x (?)
SortSortedStrings	1356	1349	-0.5%	1.01x (?)
SortStrings	2350	2340	-0.4%	1.00x
SortStringsUnicode	8474	8337	-1.6%	1.02x
StackPromo	96440	97628	+1.2%	0.99x (?)
StaticArray	4333	4328	-0.1%	1.00x
StrComplexWalk	6601	6589	-0.2%	1.00x
StrToInt	120072	119326	-0.6%	1.01x
StringAdder	3564	3575	+0.3%	1.00x (?)
StringBuilder	6737	6713	-0.4%	1.00x (?)
StringBuilderLong	1037	1034	-0.3%	1.00x (?)
StringEdits	362943	357702	-1.4%	1.01x
StringEnumRawValueInitialization	12189	12043	-1.2%	1.01x
StringEqualPointerComparison	2376	2398	+0.9%	0.99x (?)
StringFromLongWholeSubstring	197	199	+1.0%	0.99x
StringFromLongWholeSubstringGeneric	203	205	+1.0%	0.99x
StringHasPrefix	1681	1631	-3.0%	1.03x
StringHasPrefixUnicode	15839	16111	+1.7%	0.98x
StringHasSuffix	1751	1739	-0.7%	1.01x
StringHasSuffixUnicode	60190	60228	+0.1%	1.00x (?)
StringInterpolation	12866	13138	+2.1%	0.98x (?)
StringMatch	32361	32522	+0.5%	1.00x (?)
StringUTF16Builder	7471	7482	+0.1%	1.00x (?)
StringWalk	11162	11239	+0.7%	0.99x
StringWithCString	55025	53793	-2.2%	1.02x
SubstringComparable	4030	4018	-0.3%	1.00x
SubstringEqualString	6290	6321	+0.5%	1.00x
SubstringEquatable	8082	8085	+0.0%	1.00x (?)
SubstringFromLongString	16	16	+0.0%	1.00x
SubstringFromLongStringGeneric	107	106	-0.9%	1.01x
SuffixAnyCollection	6395	6425	+0.5%	1.00x
SuffixAnyCollectionLazy	45105	44818	-0.6%	1.01x (?)
SuffixAnySeqCRangeIter	42012	42059	+0.1%	1.00x (?)
SuffixAnySeqCRangeIterLazy	41680	41780	+0.2%	1.00x
SuffixAnySeqCntRange	6430	6421	-0.1%	1.00x (?)
SuffixAnySeqCntRangeLazy	6397	6397	+0.0%	1.00x
SuffixAnySequence	29426	29452	+0.1%	1.00x
SuffixAnySequenceLazy	29401	29475	+0.3%	1.00x
SuffixArray	2023	2023	+0.0%	1.00x
SuffixArrayLazy	14160	14186	+0.2%	1.00x (?)
SuffixCountableRange	112	112	+0.0%	1.00x
SuffixCountableRangeLazy	12515	12555	+0.3%	1.00x (?)
SuffixSequence	29057	29091	+0.1%	1.00x (?)
SuffixSequenceLazy	29031	29093	+0.2%	1.00x
SumUsingReduce	217871	218127	+0.1%	1.00x (?)
SumUsingReduceInto	212816	212885	+0.0%	1.00x (?)
SuperChars	180999	181997	+0.6%	0.99x (?)
TwoSum	4056	4045	-0.3%	1.00x (?)
UTF8Decode	36414	36612	+0.5%	0.99x
Walsh	11207	11380	+1.5%	0.98x
XorLoop	22673	22673	+0.0%	1.00x

Hardware Overview

  Model Name: Mac mini
  Model Identifier: Macmini7,1
  Processor Name: Intel Core i7
  Processor Speed: 3 GHz
  Number of Processors: 1
  Total Number of Cores: 2
  L2 Cache (per Core): 256 KB
  L3 Cache: 4 MB
  Memory: 16 GB

---

[airspeedswift]

@DougGregor I'm kind of ambivalent. I can't think of any good reason for that constraint ever to not be fulfilled, but also can't think of a use case where it would be useful. I could be missing one tho.