[DNM] OSSA lowering after inlining

[meg-gupta]

No description provided.

[meg-gupta]

@swift-ci please apple silicon benchmark

[meg-gupta]

@swift-ci please apple silicon benchmark

[meg-gupta]

####### Testing optimization level -O #######

------- Performance (arm64): -O -------

REGRESSION                                               OLD        NEW         DELTA                RATIO    
MapReduceClass2                                          7.728      42.534      +450.3%              **0.18x**
ArrayPlusEqualSingleElementCollection                    340.98     1085.273    +218.3%              **0.31x**
MapReduce                                                96.9       225.1       +132.3%              **0.43x**
SubstringFromLongString2                                 17.143     37.417      +118.3%              **0.46x**
DevirtualizeProtocolComposition                          118.563    249.571     +110.5%              **0.48x**
SubstringFromLongStringGeneric2                          18.697     39.0        +108.6%              **0.48x (?)**
UTF8Decode_InitFromCustom_noncontiguous_ascii            197.273    403.8       +104.7%              **0.49x (?)**
RC4                                                      58.4       113.588     +94.5%               **0.51x**
PrefixWhileAnySeqCntRange                                102.059    193.364     +89.5%               **0.53x (?)**
PrefixWhileAnySeqCRangeIter                              102.111    193.2       +89.2%               **0.53x (?)**
UTF8Decode_InitFromCustom_noncontiguous_ascii_as_ascii   248.5      455.75      +83.4%               **0.55x (?)**
RandomShuffleLCG2                                        123.326    220.337     +78.7%               **0.56x (?)**
RawBuffer.1000.findLast                                  2394.0     4114.0      +71.8%               **0.58x**
RawBuffer.39.findLast                                    99.8       159.143     +59.5%               **0.63x (?)**
MapReduceClassShort2                                     54.0       84.31       +56.1%               **0.64x**
RawBuffer.128.findLast                                   353.0      544.0       +54.1%               **0.65x (?)**
UTF8Decode_InitFromCustom_noncontiguous                  126.4      188.0       +48.7%               **0.67x (?)**
CxxVecU32.sum.Swift.reduce                               26.592     37.7        +41.8%               **0.71x (?)**
RawBuffer.7.findLast                                     24.939     34.3        +37.5%               **0.73x (?)**
DropWhileCountableRangeLazy                              28.818     38.897      +35.0%               **0.74x**
RawBuffer.1000.findFirst                                 2403.0     3176.0      +32.2%               **0.76x (?)**
Data.append.Sequence.64kB.Count0.I                       156.75     203.667     +29.9%               **0.77x**
Data.append.Sequence.809B.Count0                         212.2      271.375     +27.9%               **0.78x (?)**
Data.append.Sequence.64kB.Count0                         157.667    201.2       +27.6%               **0.78x**
Data.append.Sequence.809B.Count0.I                       213.444    270.429     +26.7%               **0.79x**
Data.init.Sequence.64kB.Count0.I                         156.75     197.25      +25.8%               **0.79x (?)**
Data.init.Sequence.64kB.Count0                           156.833    196.75      +25.5%               **0.80x**
Data.init.Sequence.64kB.Count0.RE                        160.182    200.0       +24.9%               **0.80x (?)**
Data.init.Sequence.64kB.Count0.RE.I                      160.231    199.0       +24.2%               **0.81x (?)**
Data.append.Sequence.64kB.Count0.RE.I                    160.75     198.8       +23.7%               **0.81x (?)**
Data.init.Sequence.2047B.Count0.I                        273.667    337.5       +23.3%               **0.81x (?)**
Data.append.Sequence.64kB.Count0.RE                      160.917    198.2       +23.2%               **0.81x**
Data.init.Sequence.2049B.Count0.I                        274.0      336.833     +22.9%               **0.81x (?)**
Data.append.Sequence.809B.Count0.RE                      217.909    267.0       +22.5%               **0.82x (?)**
DropWhileAnyCollectionLazy                               42.091     51.37       +22.0%               **0.82x (?)**
DropWhileAnySeqCRangeIterLazy                            42.167     51.364      +21.8%               **0.82x (?)**
DropWhileAnySeqCntRangeLazy                              42.176     51.35       +21.8%               **0.82x (?)**
Data.init.Sequence.809B.Count0.I                         234.667    285.429     +21.6%               **0.82x (?)**
Data.append.Sequence.809B.Count0.RE.I                    217.9      264.667     +21.5%               **0.82x**
RawBuffer.39.findFirst                                   102.9      124.75      +21.2%               **0.82x (?)**
Data.init.Sequence.809B.Count0                           235.333    285.0       +21.1%               **0.83x (?)**
Data.init.Sequence.809B.Count0.RE.I                      238.667    289.0       +21.1%               **0.83x (?)**
Data.init.Sequence.513B.Count0.I                         239.667    289.286     +20.7%               **0.83x (?)**
Data.init.Sequence.809B.Count0.RE                        239.222    288.143     +20.4%               **0.83x (?)**
StrToInt                                                 345.294    414.815     +20.1%               **0.83x (?)**
Data.init.Sequence.511B.Count0.I                         239.444    286.0       +19.4%               **0.84x (?)**
Set.subtracting.Seq.Box0                                 383.5      450.2       +17.4%               **0.85x (?)**
EqualStringSubstring                                     18.889     22.164      +17.3%               **0.85x (?)**
ConvertFloatingPoint.MockFloat64ToDouble                 9.885      11.542      +16.8%               **0.86x (?)**
LessSubstringSubstringGenericComparable                  18.884     22.049      +16.8%               **0.86x (?)**
LessSubstringSubstring                                   18.872     22.034      +16.8%               **0.86x (?)**
EqualSubstringSubstring                                  18.87      22.028      +16.7%               **0.86x**
EqualSubstringString                                     18.875     22.025      +16.7%               **0.86x (?)**
EqualSubstringSubstringGenericEquatable                  18.884     22.035      +16.7%               **0.86x (?)**
FrequenciesUsingReduceInto                               388.333    440.435     +13.4%               **0.88x (?)**
LazilyFilteredRange                                      1796.667   2000.0      +11.3%               **0.90x (?)**
ArrayPlusEqualThreeElements                              461.923    513.871     +11.2%               **0.90x (?)**
String.replaceSubrange.ArrChar.Small                     20.125     21.844      +8.5%                **0.92x (?)**
String.replaceSubrange.Substring.Small                   21.88      23.538      +7.6%                **0.93x (?)**

IMPROVEMENT                                              OLD        NEW         DELTA                RATIO    
StringEqualPointerComparison                             93.545     0.0         -100.0%              **93546.00x**
SubstringComparable                                      4.366      0.0         -100.0%              **4367.00x**
ChaCha                                                   146.538    68.84       -53.0%               **2.13x**
Set.subtracting.Seq.Empty.Box                            138.143    67.069      -51.4%               **2.06x (?)**
NaiveRRC.init.largeContiguous                            10.18      5.5         -46.0%               **1.85x (?)**
NaiveRRC.append.largeContiguous                          10.185     5.519       -45.8%               **1.85x (?)**
Set.subtracting.Seq.Box.Empty                            118.5      67.071      -43.4%               **1.77x (?)**
Set.isStrictSubset.Seq.Int.Empty                         81.083     49.914      -38.4%               **1.62x (?)**
Set.isStrictSuperset.Seq.Empty.Int                       81.083     49.92       -38.4%               **1.62x (?)**
Set.isDisjoint.Seq.Box.Empty                             57.721     35.857      -37.9%               **1.61x (?)**
Set.isSubset.Seq.Int.Empty                               81.077     51.429      -36.6%               **1.58x (?)**
Set.subtracting.Empty.Box                                12.163     7.787       -36.0%               **1.56x (?)**
ArrayAppendSequence                                      360.588    231.395     -35.8%               **1.56x (?)**
Set.subtracting.Seq.Int.Empty                            96.7       62.391      -35.5%               **1.55x (?)**
NaiveRRC.append.smallContiguousRepeated                  69.455     46.057      -33.7%               **1.51x (?)**
SequenceAlgosUnfoldSequence                              294.063    221.127     -24.8%               **1.33x**
DropWhileAnySequenceLazy                                 170.0      128.154     -24.6%               **1.33x (?)**
Set.subtracting.Seq.Empty.Int                            90.476     68.615      -24.2%               **1.32x (?)**
NopDeinit                                                26550.0    20311.111   -23.5%               **1.31x (?)**
Set.isStrictSuperset.Seq.Int0                            10.163     7.786       -23.4%               **1.31x (?)**
Set.subtracting.Empty.Int                                19.341     14.976      -22.6%               **1.29x**
CharacterPropertiesPrecomputed                           537.222    416.75      -22.4%               **1.29x (?)**
RawBuffer.7.findFirst                                    31.182     24.941      -20.0%               **1.25x (?)**
QueueConcrete                                            427.143    343.125     -19.7%               **1.24x (?)**
PrefixWhileArray                                         48.263     38.875      -19.5%               **1.24x**
Set.isStrictSuperset.Seq.Box0                            13.093     10.764      -17.8%               **1.22x (?)**
ArrayAppendLazyMap                                       607.778    508.5       -16.3%               **1.20x (?)**
DataSubscriptSmall                                       10.909     9.341       -14.4%               **1.17x**
ChainedFilterMap                                         608.5      526.605     -13.5%               **1.16x**
ParseInt.UInt64.Decimal                                  97.6       85.6        -12.3%               **1.14x (?)**
RemoveWhereSwapInts                                      12.0       10.64       -11.3%               **1.13x (?)**
DropWhileArray                                           29.208     26.108      -10.6%               **1.12x (?)**
Set.isDisjoint.Seq.Int100                                62.545     56.5        -9.7%                **1.11x (?)**
RomanNumbers2                                            257.111    233.333     -9.2%                **1.10x (?)**
Set.isDisjoint.Seq.Int.Empty                             34.292     31.185      -9.1%                **1.10x (?)**
Set.isDisjoint.Seq.Empty.Int                             37.429     34.304      -8.3%                **1.09x (?)**
ArrayAppendAscii                                         1684.133   1551.25     -7.9%                **1.09x (?)**
CharacterPropertiesStashed                               409.286    377.209     -7.8%                **1.09x (?)**
Data.append.Sequence.64kB.Count.RE.I                     2.063      1.906       -7.6%                **1.08x (?)**
StringFromLongWholeSubstring                             2.169      2.016       -7.1%                **1.08x**
Prims.NonStrongRef.UnownedSafe.Closure                   230.0      214.3       -6.8%                **1.07x (?)**
Prims.NonStrongRef.UnownedSafe                           229.875    214.333     -6.8%                **1.07x (?)**

REMOVED                                                  MIN        MAX         MEAN                 MAX_RSS  
CSVParsing.Char                                          98.217     98.348      98.26066666666667    —        
CSVParsing.Scalar                                        212.333    212.5       212.44433333333333   —        
CSVParsing.UTF16                                         21.679     21.696      21.684666666666665   —        
CSVParsing.UTF8                                          12.819     12.88       12.857333333333333   —        
CSVParsingAlt2                                           561.688    561.917     561.7643333333333    —        
CSVParsingAltIndices2                                    388.612    388.94      388.72133333333335   —        

------- Code size: -O -------

REGRESSION                                         OLD      NEW      DELTA    RATIO  
IntegerParsing.o                                   56434    67610    +19.8%   **0.83x**
NIOChannelPipeline.o                               3059     3447     +12.7%   **0.89x**
StringSplitting.o                                  27695    30109    +8.7%    **0.92x**
Suffix.o                                           16894    18110    +7.2%    **0.93x**
DropFirst.o                                        11921    12701    +6.5%    **0.94x**
RangeOverlaps.o                                    4355     4539     +4.2%    **0.96x**
RC4.o                                              2628     2736     +4.1%    **0.96x**
RandomShuffle.o                                    2350     2446     +4.1%    **0.96x**
StringInterpolation.o                              5530     5742     +3.8%    **0.96x**
ProtocolDispatch2.o                                1170     1214     +3.8%    **0.96x**
RomanNumbers.o                                     3329     3429     +3.0%    **0.97x**
Prefix.o                                           11970    12306    +2.8%    **0.97x**
FloatingPointConversion.o                          17206    17502    +1.7%    **0.98x**
ChaCha.o                                           11366    11550    +1.6%    **0.98x**
CharacterLiteralsSmall.o                           894      906      +1.3%    **0.99x**
CxxVectorSum.o                                     11036    11172    +1.2%    **0.99x**
StrToInt.o                                         4150     4198     +1.2%    **0.99x**

IMPROVEMENT                                        OLD      NEW      DELTA    RATIO  
Walsh.o                                            4245     3101     -26.9%   **1.37x**
NopDeinit.o                                        3525     2765     -21.6%   **1.27x**
PrefixWhile.o                                      12273    10539    -14.1%   **1.16x**
Exclusivity.o                                      3246     2790     -14.0%   **1.16x**
Hash.o                                             17763    15671    -11.8%   **1.13x**
StringDistance.o                                   10459    9275     -11.3%   **1.13x**
ReduceInto.o                                       8713     7829     -10.1%   **1.11x**
BucketSort.o                                       6629     5969     -10.0%   **1.11x**
AngryPhonebook.o                                   6315     5687     -9.9%    **1.11x**
DropWhile.o                                        12035    10857    -9.8%    **1.11x**
FlattenList.o                                      2750     2506     -8.9%    **1.10x**
DropLast.o                                         17416    15908    -8.7%    **1.09x**
IterateData.o                                      1403     1287     -8.3%    **1.09x**
LuhnAlgoLazy.o                                     10012    9216     -8.0%    **1.09x**
LuhnAlgoEager.o                                    10016    9220     -7.9%    **1.09x**
StringEdits.o                                      7288     6768     -7.1%    **1.08x**
ClassArrayGetter.o                                 3134     2922     -6.8%    **1.07x**
StringTests.o                                      6210     5806     -6.5%    **1.07x**
IndexPathTest.o                                    7974     7462     -6.4%    **1.07x**
CharacterLiteralsLarge.o                           630      590      -6.3%    **1.07x**
CharacterProperties.o                              17368    16464    -5.2%    **1.05x**
DictionaryGroup.o                                  9651     9167     -5.0%    **1.05x**
ByteSwap.o                                         1102     1054     -4.4%    **1.05x**
TwoSum.o                                           3309     3169     -4.2%    **1.04x**
RangeReplaceableCollectionPlusDefault.o            6051     5799     -4.2%    **1.04x**
QueueTest.o                                        8983     8631     -3.9%    **1.04x**
SuperChars.o                                       1061     1021     -3.8%    **1.04x**
FindStringNaive.o                                  5557     5349     -3.7%    **1.04x**
PopFront.o                                         2604     2508     -3.7%    **1.04x**
WordCount.o                                        30499    29383    -3.7%    **1.04x**
SubstringTest.o                                    15587    15082    -3.2%    **1.03x**
Integrate.o                                        1677     1625     -3.1%    **1.03x**
PopFrontGeneric.o                                  1997     1937     -3.0%    **1.03x**
RemoveWhere.o                                      11152    10824    -2.9%    **1.03x**
ArrayOfRef.o                                       5873     5701     -2.9%    **1.03x**
DriverUtils.o                                      119173   115717   -2.9%    **1.03x**
ArrayOfGenericRef.o                                6648     6476     -2.6%    **1.03x**
NaiveRangeReplaceableCollectionConformance.o       7326     7146     -2.5%    **1.03x**
Chars.o                                            1142     1114     -2.5%    **1.03x**
DictTest3.o                                        12603    12295    -2.4%    **1.03x**
DictTest.o                                         10686    10426    -2.4%    **1.02x**
Fibonacci.o                                        1206     1178     -2.3%    **1.02x**
Ackermann.o                                        1389     1357     -2.3%    **1.02x**
BufferFind.o                                       2730     2670     -2.2%    **1.02x**
MapReduce.o                                        19397    18977    -2.2%    **1.02x**
DictTest2.o                                        8443     8263     -2.1%    **1.02x**
DictionaryCopy.o                                   7364     7208     -2.1%    **1.02x**
Combos.o                                           3788     3712     -2.0%    **1.02x**
ArrayAppend.o                                      19861    19465    -2.0%    **1.02x**
DictOfArraysToArrayOfDicts.o                       18126    17810    -1.7%    **1.02x**
BinaryFloatingPointConversionFromBinaryInteger.o   23490    23082    -1.7%    **1.02x**
ChainedFilterMap.o                                 2539     2495     -1.7%    **1.02x**
RGBHistogram.o                                     17487    17191    -1.7%    **1.02x**
Hanoi.o                                            2148     2112     -1.7%    **1.02x**
DiffingMyers.o                                     5049     4965     -1.7%    **1.02x**
Diffing.o                                          6010     5914     -1.6%    **1.02x**
CxxSetToCollection.o                               6519     6415     -1.6%    **1.02x**
ArrayRemoveAll.o                                   6124     6028     -1.6%    **1.02x**
TestsUtils.o                                       17300    17052    -1.4%    **1.01x**
ObjectiveCBridging.o                               45546    44918    -1.4%    **1.01x**
Histogram.o                                        2425     2393     -1.3%    **1.01x**
MonteCarloE.o                                      1829     1805     -1.3%    **1.01x**
COWTree.o                                          8726     8614     -1.3%    **1.01x**
DictionarySubscriptDefault.o                       15188    15000    -1.2%    **1.01x**
Breadcrumbs.o                                      33629    33213    -1.2%    **1.01x**
DictionaryOfAnyHashableStrings.o                   5890     5818     -1.2%    **1.01x**
DictionaryLiteralTest.o                            993      981      -1.2%    **1.01x**
SetTests.o                                         117967   116667   -1.1%    **1.01x**
LazyFilter.o                                       5497     5437     -1.1%    **1.01x**
ArraySubscript.o                                   1841     1821     -1.1%    **1.01x**
SortArrayInClass.o                                 1856     1836     -1.1%    **1.01x**
UTF8Decode.o                                       15698    15534    -1.0%    **1.01x**
Phonebook.o                                        7384     7308     -1.0%    **1.01x**
DataBenchmarks.o                                   49525    49017    -1.0%    **1.01x**

####### Testing optimization level -Osize #######

------- Performance (arm64): -Osize -------

REGRESSION                                               OLD         NEW        DELTA                RATIO     
ArrayPlusEqualSingleElementCollection                    347.322     1088.833   +213.5%              **0.32x** 
SubstringFromLongStringGeneric2                          18.697      42.103     +125.2%              **0.44x (?)**
DevirtualizeProtocolComposition                          118.533     249.571    +110.5%              **0.47x (?)**
SubstringFromLongString2                                 18.705      39.0       +108.5%              **0.48x** 
RandomShuffleLCG2                                        113.185     219.752    +94.2%               **0.52x** 
StrToInt                                                 558.462     1067.778   +91.2%               **0.52x (?)**
ArrayOfPOD                                               149.75      285.5      +90.7%               **0.52x** 
ObjectiveCBridgeStubDataAppend                           1292.857    2462.857   +90.5%               **0.52x (?)**
PrefixWhileAnySeqCRangeIter                              101.875     193.0      +89.4%               **0.53x (?)**
PrefixWhileAnySeqCntRange                                101.947     193.0      +89.3%               **0.53x (?)**
RC4                                                      62.444      115.813    +85.5%               **0.54x** 
RawBuffer.128.findLast                                   305.667     545.25     +78.4%               **0.56x (?)**
RawBuffer.1000.findLast                                  2391.0      4115.0     +72.1%               **0.58x** 
RawBuffer.39.findLast                                    99.8        166.857    +67.2%               **0.60x (?)**
SetSymmetricDifferenceInt100                             80.321      113.95     +41.9%               **0.70x (?)**
RawBuffer.7.findLast                                     24.938      34.292     +37.5%               **0.73x (?)**
SIMDRandomMask.Int64x8                                   82.667      110.2      +33.3%               **0.75x (?)**
DataAccessBytesMedium                                    40.538      53.03      +30.8%               **0.76x (?)**
DataAccessBytesSmall                                     43.647      56.154     +28.7%               **0.78x (?)**
DropWhileCountableRangeLazy                              38.481      48.158     +25.1%               **0.80x** 
MapReduce                                                194.0       240.5      +24.0%               **0.81x (?)**
LineSink.bytes.complex                                   75.481      90.556     +20.0%               **0.83x** 
LineSink.scalars.complex                                 75.485      90.556     +20.0%               **0.83x (?)**
Hanoi                                                    1005.625    1195.714   +18.9%               **0.84x (?)**
Data.init.Sequence.64kB.Count0.RE                        177.0       209.4      +18.3%               **0.85x (?)**
Data.init.Sequence.64kB.Count0.RE.I                      177.182     209.4      +18.2%               **0.85x (?)**
LessSubstringSubstring                                   19.481      22.922     +17.7%               **0.85x (?)**
EqualSubstringSubstring                                  19.486      22.914     +17.6%               **0.85x (?)**
Data.init.Sequence.64kB.Count0                           175.583     206.0      +17.3%               **0.85x** 
Data.init.Sequence.64kB.Count0.I                         175.5       205.75     +17.2%               **0.85x (?)**
EqualStringSubstring                                     19.0        22.263     +17.2%               **0.85x (?)**
Data.init.Sequence.809B.Count0                           257.625     301.714    +17.1%               **0.85x** 
EqualSubstringString                                     19.03       22.267     +17.0%               **0.85x (?)**
Data.init.Sequence.809B.Count0.I                         257.625     301.0      +16.8%               **0.86x (?)**
EqualSubstringSubstringGenericEquatable                  19.481      22.759     +16.8%               **0.86x (?)**
LessSubstringSubstringGenericComparable                  19.487      22.763     +16.8%               **0.86x (?)**
Data.append.Sequence.64kB.Count0.RE                      177.0       206.7      +16.8%               **0.86x (?)**
Data.init.Sequence.2049B.Count0.I                        302.0       352.667    +16.8%               **0.86x (?)**
Data.append.Sequence.64kB.Count0.I                       175.455     204.667    +16.6%               **0.86x** 
Data.init.Sequence.2047B.Count0.I                        302.0       352.167    +16.6%               **0.86x** 
Data.init.Sequence.809B.Count0.RE                        259.5       302.429    +16.5%               **0.86x (?)**
Data.append.Sequence.64kB.Count0                         175.5       204.2      +16.4%               **0.86x (?)**
UTF16Decode.initFromCustom.noncont                       371.5       431.4      +16.1%               **0.86x (?)**
Data.append.Sequence.64kB.Count0.RE.I                    177.091     205.25     +15.9%               **0.86x** 
Data.append.Sequence.809B.Count0.RE.I                    237.667     274.75     +15.6%               **0.87x (?)**
Data.append.Sequence.809B.Count0                         235.3       272.0      +15.6%               **0.87x (?)**
SetSymmetricDifferenceInt50                              102.429     118.389    +15.6%               **0.87x (?)**
Data.init.Sequence.809B.Count0.RE.I                      259.667     299.25     +15.2%               **0.87x (?)**
Data.append.Sequence.809B.Count0.I                       235.5       271.0      +15.1%               **0.87x (?)**
FrequenciesUsingReduceInto                               450.0       516.667    +14.8%               **0.87x (?)**
Data.append.Sequence.809B.Count0.RE                      237.778     272.667    +14.7%               **0.87x (?)**
Data.init.Sequence.513B.Count0.I                         261.25      299.0      +14.4%               **0.87x (?)**
Data.init.Sequence.511B.Count0.I                         261.125     297.25     +13.8%               **0.88x** 
Set.isDisjoint.Empty.Int                                 45.217      51.455     +13.8%               **0.88x (?)**
LineSink.bytes.alpha                                     24.813      28.081     +13.2%               **0.88x** 
LazilyFilteredRange                                      2112.727    2376.667   +12.5%               **0.89x (?)**
Set.subtracting.Seq.Box0                                 444.6       500.0      +12.5%               **0.89x (?)**
ConvertFloatingPoint.MockFloat64ToDouble                 11.558      12.962     +12.1%               **0.89x (?)**
ObserverForwarderStruct                                  195.238     217.917    +11.6%               **0.90x (?)**
UTF16Decode.initFromCustom.cont                          362.0       404.0      +11.6%               **0.90x (?)**
MapReduceClass2                                          63.0        69.25      +9.9%                **0.91x (?)**
CxxVecU32.sum.Swift.forInLoop                            67.957      74.545     +9.7%                **0.91x** 
DataCreateSmall                                          1310.526    1434.286   +9.4%                **0.91x** 
CharIndexing_korean_unicodeScalars                       3981.053    4355.556   +9.4%                **0.91x (?)**
ArrayOfGenericPOD2                                       151.143     165.222    +9.3%                **0.91x (?)**
String.replaceSubrange.ArrChar.Small                     20.273      22.135     +9.2%                **0.92x (?)**
Set.subtracting.Seq.Box25                                738.0       799.667    +8.4%                **0.92x (?)**
Combos                                                   131.333     142.3      +8.4%                **0.92x (?)**
CxxVecU32.sum.Swift.reduce                               68.088      73.348     +7.7%                **0.93x (?)**
String.replaceSubrange.Substring.Small                   22.0        23.68      +7.6%                **0.93x (?)**

IMPROVEMENT                                              OLD         NEW        DELTA                RATIO     
StringEqualPointerComparison                             156.0       0.0        -100.0%              **156001.00x**
PrefixAnySequence                                        556.0       38.786     -93.0%               **14.33x**
PrefixAnySeqCRangeIter                                   124.0       19.327     -84.4%               **6.42x** 
PrefixAnySeqCntRange                                     123.4       19.325     -84.3%               **6.39x** 
DropWhileAnySeqCRangeIter                                122.5       19.345     -84.2%               **6.33x** 
DropWhileAnySeqCntRange                                  122.455     19.345     -84.2%               **6.33x** 
ProtocolDispatch2                                        265.25      62.429     -76.5%               **4.25x** 
ParseInt.IntSmall.Decimal                                284.125     81.154     -71.4%               **3.50x** 
ParseInt.IntSmall.UncommonRadix                          333.143     95.304     -71.4%               **3.50x** 
ParseInt.UIntSmall.Binary                                520.0       213.455    -59.0%               **2.44x** 
SumUsingReduceInto                                       940.5       513.5      -45.4%               **1.83x** 
SumUsingReduce                                           940.5       513.5      -45.4%               **1.83x** 
ChaCha                                                   146.462     82.0       -44.0%               **1.79x (?)**
NaiveRRC.init.largeContiguous                            10.8        6.108      -43.4%               **1.77x (?)**
NaiveRRC.append.largeContiguous                          10.806      6.119      -43.4%               **1.77x (?)**
CharIteration_punctuated_unicodeScalars                  657.674     374.359    -43.1%               **1.76x (?)**
Set.subtracting.Seq.Box.Empty                            127.875     74.833     -41.5%               **1.71x (?)**
Set.isDisjoint.Seq.Box.Empty                             62.4        37.446     -40.0%               **1.67x** 
Set.isStrictSubset.Seq.Int.Empty                         87.357      54.563     -37.5%               **1.60x (?)**
Set.isStrictSuperset.Seq.Empty.Int                       87.357      54.563     -37.5%               **1.60x (?)**
Set.subtracting.Seq.Int.Empty                            110.778     70.154     -36.7%               **1.58x (?)**
CharIteration_ascii_unicodeScalars                       2564.138    1629.474   -36.5%               **1.57x (?)**
Set.subtracting.Empty.Box                                13.72       8.73       -36.4%               **1.57x (?)**
CharIteration_tweet_unicodeScalars                       4985.0      3188.0     -36.0%               **1.56x (?)**
NaiveRRC.append.smallContiguousRepeated                  72.559      47.577     -34.4%               **1.53x** 
Set.isSubset.Seq.Int.Empty                               88.9        59.25      -33.4%               **1.50x (?)**
Data.append.Sequence.64kB.Count.RE.I                     31.467      21.043     -33.1%               **1.50x (?)**
SequenceAlgosUnfoldSequence                              340.8       228.125    -33.1%               **1.49x (?)**
Data.append.Sequence.64kB.Count.RE                       31.292      21.063     -32.7%               **1.49x** 
Set.subtracting.Seq.Empty.Int                            104.444     76.417     -26.8%               **1.37x (?)**
Set.subtracting.Seq.Empty.Box                            103.313     76.438     -26.0%               **1.35x (?)**
DataCreateEmpty                                          124.651     93.469     -25.0%               **1.33x (?)**
CharacterPropertiesPrecomputed                           588.824     447.179    -24.1%               **1.32x** 
Set.isStrictSuperset.Seq.Int0                            10.653      8.1        -24.0%               **1.32x (?)**
CharacterLiteralsLarge                                   53.03       40.552     -23.5%               **1.31x** 
Set.subtracting.Empty.Int                                21.514      16.525     -23.2%               **1.30x (?)**
CharIteration_russian_unicodeScalars                     2884.0      2238.71    -22.4%               **1.29x** 
Data.append.Sequence.809B.Count.RE.I                     62.444      49.714     -20.4%               **1.26x (?)**
DataAppendSequence                                       6226.087    4982.353   -20.0%               **1.25x (?)**
Data.append.Sequence.809B.Count.RE                       62.296      49.962     -19.8%               **1.25x (?)**
PrefixWhileArray                                         48.286      38.85      -19.5%               **1.24x (?)**
QueueConcrete                                            449.189     361.667    -19.5%               **1.24x** 
ParseInt.UInt64.Decimal                                  106.261     85.667     -19.4%               **1.24x (?)**
RawBuffer.1000.findFirst                                 3963.0      3204.0     -19.2%               **1.24x (?)**
NopDeinit                                                32800.0     26550.0    -19.1%               **1.24x (?)**
QueueGeneric                                             430.185     349.524    -18.8%               **1.23x** 
PointerArithmetics                                       18716.667   15600.0    -16.7%               **1.20x (?)**
RawBuffer.39.findFirst                                   160.692     134.111    -16.5%               **1.20x (?)**
CharIteration_chinese_unicodeScalars                     2290.667    1916.571   -16.3%               **1.20x (?)**
ArrayAppendLazyMap                                       600.625     508.0      -15.4%               **1.18x (?)**
RawBuffer.7.findFirst                                    40.538      34.292     -15.4%               **1.18x (?)**
RemoveWhereQuadraticString                               168.286     142.6      -15.3%               **1.18x (?)**
CharIteration_korean_unicodeScalars                      3200.0      2713.846   -15.2%               **1.18x** 
Data.init.Sequence.64kB.Count                            36.097      31.071     -13.9%               **1.16x (?)**
Data.init.Sequence.64kB.Count.I                          35.933      31.1       -13.4%               **1.16x (?)**
ObjectiveCBridgeStubToNSStringRef                        92.882      80.391     -13.4%               **1.16x (?)**
UTF8Decode_InitFromCustom_noncontiguous_ascii            469.0       406.4      -13.3%               **1.15x (?)**
PrefixAnySequenceLazy                                    575.0       498.75     -13.3%               **1.15x** 
ParseInt.UInt64.Hex                                      212.778     184.909    -13.1%               **1.15x** 
SetSymmetricDifferenceInt0                               220.667     192.545    -12.7%               **1.15x (?)**
SetExclusiveOr                                           2203.333    1925.455   -12.6%               **1.14x (?)**
Set.isStrictSuperset.Seq.Box0                            16.689      14.647     -12.2%               **1.14x (?)**
PrefixWhileAnySequence                                   215.2       189.273    -12.0%               **1.14x (?)**
PrefixWhileSequence                                      215.3       189.364    -12.0%               **1.14x (?)**
UTF8Decode_InitFromCustom_noncontiguous_ascii_as_ascii   521.0       459.0      -11.9%               **1.14x (?)**
Data.init.Sequence.2047B.Count.I                         61.838      54.63      -11.7%               **1.13x (?)**
Data.init.Sequence.2049B.Count.I                         61.893      54.692     -11.6%               **1.13x (?)**
CharIteration_ascii_unicodeScalars_Backwards             3514.286    3108.0     -11.6%               **1.13x (?)**
CharIteration_tweet_unicodeScalars_Backwards             7000.0      6208.0     -11.3%               **1.13x (?)**
CharacterPropertiesStashed                               461.351     409.667    -11.2%               **1.13x (?)**
CharIteration_utf16_unicodeScalars                       3497.143    3120.0     -10.8%               **1.12x (?)**
BucketSort                                               77.464      69.194     -10.7%               **1.12x** 
DropWhileArray                                           29.138      26.113     -10.4%               **1.12x (?)**
Data.init.Sequence.809B.Count                            52.72       47.571     -9.8%                **1.11x (?)**
UTF8Decode_InitFromCustom_noncontiguous                  209.182     189.1      -9.6%                **1.11x (?)**
Data.init.Sequence.809B.Count.I                          52.75       47.694     -9.6%                **1.11x (?)**
ReversedBidirectional                                    4931.0      4463.0     -9.5%                **1.10x (?)**
CharIteration_punctuatedJapanese_unicodeScalars          611.268     553.636    -9.4%                **1.10x (?)**
FatCompactMap                                            832.0       754.0      -9.4%                **1.10x (?)**
Prims.NonStrongRef.UnownedSafe                           245.714     223.0      -9.2%                **1.10x (?)**
Prims.NonStrongRef.UnownedSafe.Closure                   245.667     223.125    -9.2%                **1.10x (?)**
StringMatch                                              3287.5      3000.0     -8.7%                **1.10x (?)**
NSError                                                  91.563      83.667     -8.6%                **1.09x (?)**
ArrayAppendAscii                                         1653.722    1522.788   -7.9%                **1.09x (?)**
DataSubscriptMedium                                      40.548      37.432     -7.7%                **1.08x (?)**
StringFromLongWholeSubstring                             2.336       2.163      -7.4%                **1.08x (?)**
CharIndexing_tweet_unicodeScalars                        4984.0      4623.529   -7.2%                **1.08x (?)**
AngryPhonebook.ASCII2.Small                              76.323      71.0       -7.0%                **1.07x (?)**
Data.init.Sequence.513B.Count.I                          56.286      52.444     -6.8%                **1.07x (?)**
CharIndexing_ascii_unicodeScalars                        2537.778    2371.034   -6.6%                **1.07x** 

REMOVED                                                  MIN         MAX        MEAN                 MAX_RSS   
CSVParsing.Char                                          105.955     106.136    106.04533333333333   —         
CSVParsing.Scalar                                        217.333     217.833    217.611              —         
CSVParsing.UTF16                                         29.781      31.438     30.575333333333333   —         
CSVParsing.UTF8                                          20.398      20.425     20.407               —         
CSVParsingAlt2                                           584.467     586.667    585.526              —         
CSVParsingAltIndices2                                    495.815     497.241    496.426              —         

------- Code size: -Osize -------

REGRESSION                                         OLD      NEW      DELTA    RATIO  
StrToInt.o                                         4066     5430     +33.5%   **0.75x**
IntegerParsing.o                                   42854    56926    +32.8%   **0.75x**
BufferFill.o                                       5773     6753     +17.0%   **0.85x**
ArrayOfPOD.o                                       1726     1954     +13.2%   **0.88x**
NIOChannelPipeline.o                               2919     3219     +10.3%   **0.91x**
Suffix.o                                           13684    14892    +8.8%    **0.92x**
NaiveRangeReplaceableCollectionConformance.o       7438     7986     +7.4%    **0.93x**
RangeOverlaps.o                                    3891     4071     +4.6%    **0.96x**
StringInterpolation.o                              5210     5426     +4.1%    **0.96x**
UTF16Decode.o                                      13138    13658    +4.0%    **0.96x**
RC4.o                                              2472     2568     +3.9%    **0.96x**
Combos.o                                           3828     3976     +3.9%    **0.96x**
RandomShuffle.o                                    2410     2502     +3.8%    **0.96x**
BitCount.o                                         1066     1106     +3.8%    **0.96x**
StrComplexWalk.o                                   2150     2230     +3.7%    **0.96x**
Phonebook.o                                        6840     7088     +3.6%    **0.97x**
SortArrayInClass.o                                 1792     1852     +3.3%    **0.97x**
RecursiveOwnedParameter.o                          986      1018     +3.2%    **0.97x**
ArrayOfGenericPOD.o                                3841     3953     +2.9%    **0.97x**
ChaCha.o                                           10078    10338    +2.6%    **0.97x**
ObserverClosure.o                                  1824     1864     +2.2%    **0.98x**
DictionaryLiteralTest.o                            550      562      +2.2%    **0.98x**
ObserverPartiallyAppliedMethod.o                   1855     1895     +2.2%    **0.98x**
RangeReplaceableCollectionPlusDefault.o            5451     5567     +2.1%    **0.98x**
FloatingPointConversion.o                          17870    18222    +2.0%    **0.98x**
DictionaryGroup.o                                  8795     8955     +1.8%    **0.98x**
BinaryFloatingPointProperties.o                    3445     3505     +1.7%    **0.98x**
PrimsNonStrongRef.o                                57926    58850    +1.6%    **0.98x**
Hanoi.o                                            2072     2104     +1.5%    **0.98x**
CharacterLiteralsSmall.o                           806      818      +1.5%    **0.99x**
DictTest4.o                                        8640     8760     +1.4%    **0.99x**
CxxSetToCollection.o                               5827     5907     +1.4%    **0.99x**
DictionaryBridgeToObjC.o                           3246     3286     +1.2%    **0.99x**
DictionaryCompactMapValues.o                       12038    12182    +1.2%    **0.99x**
ArrayLiteral.o                                     1718     1738     +1.2%    **0.99x**
DictTest4Legacy.o                                  8950     9046     +1.1%    **0.99x**

IMPROVEMENT                                        OLD      NEW      DELTA    RATIO  
ProtocolDispatch2.o                                1405     1162     -17.3%   **1.21x**
NopDeinit.o                                        3253     2757     -15.2%   **1.18x**
Walsh.o                                            3349     2889     -13.7%   **1.16x**
ObjectiveCBridgingStubs.o                          11406    10062    -11.8%   **1.13x**
DropWhile.o                                        10451    9267     -11.3%   **1.13x**
Exclusivity.o                                      2874     2574     -10.4%   **1.12x**
AngryPhonebook.o                                   6127     5619     -8.3%    **1.09x**
FlattenList.o                                      2642     2434     -7.9%    **1.09x**
IterateData.o                                      1303     1203     -7.7%    **1.08x**
SIMDRandomMask.o                                   3821     3537     -7.4%    **1.08x**
StringEdits.o                                      7488     6988     -6.7%    **1.07x**
Prefix.o                                           11000    10352    -5.9%    **1.06x**
BucketSort.o                                       6217     5853     -5.9%    **1.06x**
DropLast.o                                         13970    13154    -5.8%    **1.06x**
PrefixWhile.o                                      10277    9697     -5.6%    **1.06x**
ClassArrayGetter.o                                 3006     2842     -5.5%    **1.06x**
StringMatch.o                                      3086     2922     -5.3%    **1.06x**
StringDistance.o                                   9323     8839     -5.2%    **1.05x**
BufferFind.o                                       2066     1966     -4.8%    **1.05x**
ArrayRemoveAll.o                                   5928     5652     -4.7%    **1.05x**
ByteSwap.o                                         1066     1018     -4.5%    **1.05x**
TwoSum.o                                           1953     1869     -4.3%    **1.04x**
Array2D.o                                          1913     1833     -4.2%    **1.04x**
StringTests.o                                      5202     4986     -4.2%    **1.04x**
WordCount.o                                        29887    28751    -3.8%    **1.04x**
FindStringNaive.o                                  5069     4897     -3.4%    **1.04x**
SuperChars.o                                       1013     981      -3.2%    **1.03x**
QueueTest.o                                        8723     8455     -3.1%    **1.03x**
ReduceInto.o                                       5961     5785     -3.0%    **1.03x**
CharacterLiteralsLarge.o                           586      570      -2.7%    **1.03x**
Chars.o                                            1054     1026     -2.7%    **1.03x**
Fibonacci.o                                        1166     1138     -2.4%    **1.02x**
DiffingMyers.o                                     5347     5231     -2.2%    **1.02x**
DictOfArraysToArrayOfDicts.o                       15137    14809    -2.2%    **1.02x**
DictionaryCopy.o                                   6376     6240     -2.1%    **1.02x**
Ackermann.o                                        1345     1317     -2.1%    **1.02x**
CharacterProperties.o                              15308    15008    -2.0%    **1.02x**
SortIntPyramids.o                                  6948     6812     -2.0%    **1.02x**
DictTest.o                                         8414     8250     -1.9%    **1.02x**
BinaryFloatingPointConversionFromBinaryInteger.o   20330    19938    -1.9%    **1.02x**
SubstringTest.o                                    13171    12938    -1.8%    **1.02x**
Integrate.o                                        1621     1593     -1.7%    **1.02x**
RemoveWhere.o                                      9676     9516     -1.7%    **1.02x**
FloatingPointParsing.o                             6899     6787     -1.6%    **1.02x**
SetTests.o                                         96479    94915    -1.6%    **1.02x**
NSErrorTest.o                                      1287     1267     -1.6%    **1.02x**
LazyFilter.o                                       5445     5361     -1.5%    **1.02x**
LuhnAlgoLazy.o                                     10029    9877     -1.5%    **1.02x**
LuhnAlgoEager.o                                    10033    9881     -1.5%    **1.02x**
DriverUtils.o                                      108631   107287   -1.2%    **1.01x**
COWTree.o                                          8476     8372     -1.2%    **1.01x**
RGBHistogram.o                                     15481    15305    -1.1%    **1.01x**
TestsUtils.o                                       16924    16756    -1.0%    **1.01x**

####### Testing optimization level -Onone #######
------- Performance (arm64): -Onone -------

REGRESSION                                OLD        NEW        DELTA                RATIO    
LessSubstringSubstringGenericComparable   21.36      24.629     +15.3%               **0.87x (?)**
EqualSubstringSubstringGenericEquatable   21.4       24.63      +15.1%               **0.87x (?)**
LessSubstringSubstring                    22.417     25.731     +14.8%               **0.87x (?)**
EqualSubstringString                      23.042     26.265     +14.0%               **0.88x (?)**
EqualStringSubstring                      22.795     25.867     +13.5%               **0.88x (?)**
EqualSubstringSubstring                   22.391     25.25      +12.8%               **0.89x (?)**
ArrayAppendGenericStructs                 700.0      785.0      +12.1%               **0.89x (?)**
String.replaceSubrange.ArrChar.Small      20.756     22.895     +10.3%               **0.91x**
String.replaceSubrange.Substring.Small    22.75      25.0       +9.9%                **0.91x (?)**
DataAppendArray                           1907.273   2072.222   +8.6%                **0.92x (?)**
ObjectiveCBridgeStubNSDateRefAccess       3059.0     3315.0     +8.4%                **0.92x (?)**
ObjectiveCBridgeStubDateAccess            2293.0     2474.0     +7.9%                **0.93x (?)**

IMPROVEMENT                               OLD        NEW        DELTA                RATIO    
Data.init.Sequence.64kB.Count.I           839.0      757.0      -9.8%                **1.11x (?)**
Data.init.Sequence.64kB.Count             839.0      757.0      -9.8%                **1.11x (?)**
Data.append.Sequence.64kB.Count           839.5      757.667    -9.7%                **1.11x**
Data.append.Sequence.64kB.Count.I         839.5      757.667    -9.7%                **1.11x (?)**
Data.init.Sequence.2047B.Count.I          1321.0     1193.0     -9.7%                **1.11x (?)**
Data.init.Sequence.2049B.Count.I          1322.0     1194.0     -9.7%                **1.11x (?)**
Data.init.Sequence.809B.Count.I           1057.0     956.0      -9.6%                **1.11x (?)**
Data.init.Sequence.809B.Count             1057.0     956.0      -9.6%                **1.11x (?)**
Data.init.Sequence.513B.Count.I           1020.0     924.0      -9.4%                **1.10x (?)**
Data.append.Sequence.809B.Count.I         1069.0     968.5      -9.4%                **1.10x (?)**
Data.init.Sequence.511B.Count.I           1016.0     921.0      -9.4%                **1.10x (?)**
Data.append.Sequence.809B.Count           1067.0     968.0      -9.3%                **1.10x (?)**
Data.init.Sequence.64kB.Count0            918.0      835.0      -9.0%                **1.10x (?)**
Data.init.Sequence.64kB.Count0.I          917.0      835.0      -8.9%                **1.10x (?)**
Data.append.Sequence.64kB.Count0.I        918.5      836.5      -8.9%                **1.10x (?)**
Data.append.Sequence.64kB.Count0          918.0      836.5      -8.9%                **1.10x (?)**
Data.init.Sequence.2047B.Count0.I         1469.0     1340.0     -8.8%                **1.10x (?)**
Data.init.Sequence.2049B.Count0.I         1470.0     1342.0     -8.7%                **1.10x (?)**
Data.append.Sequence.809B.Count0.I        1165.0     1065.0     -8.6%                **1.09x (?)**
Data.append.Sequence.809B.Count0          1164.5     1066.0     -8.5%                **1.09x (?)**
Data.init.Sequence.809B.Count0.I          1188.0     1088.0     -8.4%                **1.09x (?)**
Data.init.Sequence.809B.Count0            1188.0     1088.0     -8.4%                **1.09x (?)**
Data.init.Sequence.511B.Count0.I          1151.5     1056.0     -8.3%                **1.09x (?)**
Data.init.Sequence.513B.Count0.I          1154.0     1059.0     -8.2%                **1.09x (?)**
RawBuffer.7.findLast                      1150.5     1061.0     -7.8%                **1.08x (?)**