Bug 147433

Summary: DFG::ArgumentsEliminationPhase should emit a PutStack for all of the GetStacks that the ByteCodeParser emitted
Product: WebKit Reporter: Filip Pizlo <fpizlo>
Component: JavaScriptCoreAssignee: Filip Pizlo <fpizlo>
Status: RESOLVED FIXED    
Severity: Normal CC: barraclough, basile_clement, benjamin, ggaren, mark.lam, mhahnenb, mmirman, msaboff, nrotem, oliver, saam, sam
Priority: P2 Keywords: InRadar
Version: 528+ (Nightly build)   
Hardware: All   
OS: All   
Bug Depends on:    
Bug Blocks: 147434    
Attachments:
Description Flags
the patch mark.lam: review+

Description Filip Pizlo 2015-07-29 20:46:51 PDT
Ideally, the ByteCodeParser would only emit SetArgument nodes for named arguments.  But currently that's not what it does - it emits a SetArgument for every argument that a varargs call may pass.  Each SetArgument gets turned into a GetStack.  This means that if ArgumentsEliminationPhase optimizes away PutStacks for those varargs arguments that didn't get passed or used, we get degenerate IR where we have a GetStack of something that didn't have a PutStack.
Comment 1 Filip Pizlo 2015-07-29 20:50:58 PDT
Created attachment 257808 [details]
the patch
Comment 2 Filip Pizlo 2015-07-29 22:35:21 PDT
This could theoretically be a regression, but it's not.


Benchmark report for SunSpider, LongSpider, V8Spider, Octane, Kraken, JSRegress, AsmBench, and CompressionBench on shakezilla (MacBookPro11,3).

VMs tested:
"TipOfTree" at /Volumes/Data/tertiary/OpenSource/WebKitBuild/Release/jsc (r187574)
"FixArguments" at /Volumes/Data/secondary/OpenSource/WebKitBuild/Release/jsc (r187574)

Collected 6 samples per benchmark/VM, with 6 VM invocations per benchmark. Emitted a call to gc() between sample measurements.
Used 1 benchmark iteration per VM invocation for warm-up. Used the jsc-specific preciseTime() function to get microsecond-level
timing. Reporting benchmark execution times with 95% confidence intervals in milliseconds.

                                                        TipOfTree                FixArguments                                   
SunSpider:
   3d-cube                                            4.7010+-0.4267            4.4814+-0.2983          might be 1.0490x faster
   3d-morph                                           5.2277+-0.1509            5.2090+-0.2813        
   3d-raytrace                                        5.1216+-0.0976     ?      5.2570+-0.4055        ? might be 1.0264x slower
   access-binary-trees                                2.1137+-0.0844     ?      2.1360+-0.3143        ? might be 1.0106x slower
   access-fannkuch                                    5.4366+-0.4877            5.2094+-0.1068          might be 1.0436x faster
   access-nbody                                       2.4703+-0.1023            2.4391+-0.0566          might be 1.0128x faster
   access-nsieve                                      2.9664+-0.0565     ?      3.1128+-0.1479        ? might be 1.0493x slower
   bitops-3bit-bits-in-byte                           1.4973+-0.0724            1.4856+-0.0614        
   bitops-bits-in-byte                                3.2675+-0.0984     ?      3.2756+-0.1968        ?
   bitops-bitwise-and                                 2.0428+-0.0432     ?      2.1532+-0.2061        ? might be 1.0541x slower
   bitops-nsieve-bits                                 2.9021+-0.0631     ?      2.9153+-0.1063        ?
   controlflow-recursive                              2.0024+-0.0262     ?      2.1491+-0.4273        ? might be 1.0732x slower
   crypto-aes                                         4.1713+-0.6711            3.8859+-0.1583          might be 1.0734x faster
   crypto-md5                                         2.4010+-0.0702     ?      2.4293+-0.1054        ? might be 1.0118x slower
   crypto-sha1                                        2.3355+-0.1617     ?      2.4642+-0.2716        ? might be 1.0551x slower
   date-format-tofte                                  7.0801+-0.8600            6.5642+-0.1656          might be 1.0786x faster
   date-format-xparb                                  4.4812+-0.0467     ?      4.7909+-0.4034        ? might be 1.0691x slower
   math-cordic                                        2.7491+-0.0585     ?      2.8236+-0.2754        ? might be 1.0271x slower
   math-partial-sums                                  5.1230+-0.0804     ?      5.2452+-0.3947        ? might be 1.0239x slower
   math-spectral-norm                                 1.7935+-0.0244            1.7897+-0.0617        
   regexp-dna                                         6.0774+-0.1631     ?      6.3186+-0.4449        ? might be 1.0397x slower
   string-base64                                      4.3147+-0.1375     ?      4.3650+-0.1012        ? might be 1.0117x slower
   string-fasta                                       5.8119+-0.3688            5.6733+-0.2760          might be 1.0244x faster
   string-tagcloud                                    8.1246+-0.1911     ?      8.1758+-0.4149        ?
   string-unpack-code                                19.6440+-0.5949     ?     20.2030+-0.8059        ? might be 1.0285x slower
   string-validate-input                              4.4917+-0.1340            4.3714+-0.0814          might be 1.0275x faster

   <arithmetic>                                       4.5519+-0.0570     ?      4.5740+-0.0580        ? might be 1.0049x slower

                                                        TipOfTree                FixArguments                                   
LongSpider:
   3d-cube                                          776.6921+-9.6184          771.3202+-6.0752        
   3d-morph                                        1491.8083+-11.1344        1487.7351+-4.5482        
   3d-raytrace                                      620.3027+-3.9100          616.0993+-3.5401        
   access-binary-trees                              814.5900+-10.6921         811.7272+-6.7850        
   access-fannkuch                                  272.0356+-2.6481     ?    273.9774+-3.4775        ?
   access-nbody                                     509.1554+-0.8811          508.6563+-0.1697        
   access-nsieve                                    371.0456+-14.6102         360.8899+-1.7714          might be 1.0281x faster
   bitops-3bit-bits-in-byte                          40.4034+-0.7381           40.1352+-0.9961        
   bitops-bits-in-byte                               79.5484+-3.7446     ?     81.0246+-3.0794        ? might be 1.0186x slower
   bitops-nsieve-bits                               400.7110+-3.8185     ?    401.4231+-6.6404        ?
   controlflow-recursive                            417.9858+-1.0120          417.5656+-2.7012        
   crypto-aes                                       584.0758+-2.1677          580.3173+-2.5949        
   crypto-md5                                       472.1136+-2.8546     ?    472.7395+-0.6612        ?
   crypto-sha1                                      624.6384+-6.7933          618.7925+-2.6898        
   date-format-tofte                                500.2670+-6.8004          496.3054+-5.4098        
   date-format-xparb                                630.8020+-6.5940          628.7740+-4.9702        
   hash-map                                         154.3709+-2.9407          153.9258+-2.3550        
   math-cordic                                      480.5468+-0.4347     ?    481.4691+-1.7018        ?
   math-partial-sums                                461.6712+-0.4261     ?    463.9467+-2.3019        ?
   math-spectral-norm                               544.8701+-1.0310     ?    545.4701+-1.4144        ?
   string-base64                                    347.0326+-4.2373     ?    348.7995+-5.5712        ?
   string-fasta                                     353.9197+-4.9712     ?    358.4985+-4.5080        ? might be 1.0129x slower
   string-tagcloud                                  174.7587+-0.7432     ?    175.0514+-1.2124        ?

   <geometric>                                      388.1269+-1.2842          387.6313+-0.5528          might be 1.0013x faster

                                                        TipOfTree                FixArguments                                   
V8Spider:
   crypto                                            51.0153+-2.6341     ?     51.2677+-1.1054        ?
   deltablue                                         84.2547+-10.5513          75.6485+-2.9324          might be 1.1138x faster
   earley-boyer                                      39.5817+-1.4779     ?     40.0565+-1.3058        ? might be 1.0120x slower
   raytrace                                          28.6883+-1.6030           28.2221+-0.9169          might be 1.0165x faster
   regexp                                            64.5675+-4.0341           63.6533+-1.5919          might be 1.0144x faster
   richards                                          67.2352+-2.2388     ?     67.5640+-1.4619        ?
   splay                                             35.0843+-2.6636     ?     36.0953+-2.5782        ? might be 1.0288x slower

   <geometric>                                       49.5694+-1.0373           49.0025+-0.8275          might be 1.0116x faster

                                                        TipOfTree                FixArguments                                   
Octane:
   encrypt                                           0.19149+-0.00071    ?     0.19256+-0.00120       ?
   decrypt                                           3.32353+-0.02610          3.31143+-0.00842       
   deltablue                                x2       0.15269+-0.00150          0.15065+-0.00168         might be 1.0136x faster
   earley                                            0.29944+-0.00372    ?     0.30193+-0.00447       ?
   boyer                                             4.16025+-0.12848          4.09381+-0.03482         might be 1.0162x faster
   navier-stokes                            x2       4.93502+-0.01156    ?     4.97871+-0.17785       ?
   raytrace                                 x2       1.02076+-0.05378    ?     1.08580+-0.10788       ? might be 1.0637x slower
   richards                                 x2       0.09893+-0.00107          0.09857+-0.00108       
   splay                                    x2       0.33265+-0.00217    ?     0.33393+-0.00354       ?
   regexp                                   x2      25.34245+-0.30148         25.02180+-0.48819         might be 1.0128x faster
   pdfjs                                    x2      37.64710+-0.40952         37.53783+-0.76309       
   mandreel                                 x2      43.69495+-0.28364    ?    44.34061+-1.14514       ? might be 1.0148x slower
   gbemu                                    x2      35.12220+-2.10849         33.89640+-0.34658         might be 1.0362x faster
   closure                                           0.55651+-0.00361          0.55548+-0.00171       
   jquery                                            7.11076+-0.08001          7.06224+-0.03916       
   box2d                                    x2       9.97944+-0.18414          9.94682+-0.04425       
   zlib                                     x2     393.23451+-10.70403       382.47700+-15.93881        might be 1.0281x faster
   typescript                               x2     663.63900+-17.68070       662.64701+-28.11085      

   <geometric>                                       5.60742+-0.03164          5.59936+-0.03428         might be 1.0014x faster

                                                        TipOfTree                FixArguments                                   
Kraken:
   ai-astar                                          232.742+-7.594      ?     239.255+-9.517         ? might be 1.0280x slower
   audio-beat-detection                               83.408+-0.423      ?      83.803+-0.531         ?
   audio-dft                                          97.994+-3.240             97.781+-2.946         
   audio-fft                                          55.147+-1.880             55.133+-0.812         
   audio-oscillator                                   62.722+-0.556      ^      60.771+-0.914         ^ definitely 1.0321x faster
   imaging-darkroom                                   94.722+-1.322      ?      95.844+-1.189         ? might be 1.0118x slower
   imaging-desaturate                                 53.635+-2.314      ?      54.878+-0.513         ? might be 1.0232x slower
   imaging-gaussian-blur                              84.421+-1.422      ?      84.668+-0.487         ?
   json-parse-financial                               37.739+-0.183             37.441+-0.344         
   json-stringify-tinderbox                           23.289+-1.055             22.502+-0.675           might be 1.0350x faster
   stanford-crypto-aes                                43.086+-1.221             42.856+-2.029         
   stanford-crypto-ccm                                39.810+-1.623      ?      40.176+-1.467         ?
   stanford-crypto-pbkdf2                             94.758+-0.908      ?      95.484+-0.593         ?
   stanford-crypto-sha256-iterative                   36.748+-1.176      ?      39.648+-9.989         ? might be 1.0789x slower

   <arithmetic>                                       74.301+-0.597      ?      75.017+-0.838         ? might be 1.0096x slower

                                                        TipOfTree                FixArguments                                   
JSRegress:
   abc-forward-loop-equal                            29.7087+-0.7182           29.1058+-0.4734          might be 1.0207x faster
   abc-postfix-backward-loop                         29.3628+-1.1699     ?     29.4869+-1.1051        ?
   abc-simple-backward-loop                          28.6998+-0.3485     ?     29.4624+-0.6602        ? might be 1.0266x slower
   abc-simple-forward-loop                           29.5825+-0.9314           29.0780+-0.7359          might be 1.0173x faster
   abc-skippy-loop                                   20.9486+-0.6589     ?     21.3110+-0.5243        ? might be 1.0173x slower
   abs-boolean                                        2.6385+-0.1288     ?      2.8880+-0.5285        ? might be 1.0945x slower
   adapt-to-double-divide                            16.9365+-0.8382           15.9371+-0.3940          might be 1.0627x faster
   aliased-arguments-getbyval                         1.1838+-0.1683     ?      1.2473+-0.2243        ? might be 1.0537x slower
   allocate-big-object                                2.5065+-0.1709     ?      2.5932+-0.4435        ? might be 1.0346x slower
   arguments-named-and-reflective                    10.7548+-0.1747     ?     10.8489+-0.3446        ?
   arguments-out-of-bounds                           10.1894+-0.8855     ?     10.2454+-1.2255        ?
   arguments-strict-mode                              9.6811+-0.4615     ?      9.8622+-0.2326        ? might be 1.0187x slower
   arguments                                          9.0796+-0.9823            8.3862+-0.1625          might be 1.0827x faster
   arity-mismatch-inlining                            0.8252+-0.0440     ?      0.9814+-0.2833        ? might be 1.1893x slower
   array-access-polymorphic-structure                 6.3806+-0.5761            6.0249+-0.1491          might be 1.0590x faster
   array-nonarray-polymorhpic-access                 25.5895+-1.0196           24.5474+-0.6953          might be 1.0425x faster
   array-prototype-every                             75.6674+-1.2841           74.9637+-1.0232        
   array-prototype-forEach                           74.5682+-1.9696           73.5743+-0.8437          might be 1.0135x faster
   array-prototype-map                               84.2350+-1.1578           82.7975+-1.8196          might be 1.0174x faster
   array-prototype-reduce                            72.2132+-0.9778           71.5990+-0.9821        
   array-prototype-reduceRight                       72.3549+-1.9036     ?     73.7129+-5.7156        ? might be 1.0188x slower
   array-prototype-some                              75.6333+-1.3668           74.8325+-1.8602          might be 1.0107x faster
   array-splice-contiguous                           21.5353+-0.5448     ^     20.3638+-0.6083        ^ definitely 1.0575x faster
   array-with-double-add                              3.4660+-0.2643            3.3639+-0.1322          might be 1.0304x faster
   array-with-double-increment                        2.9930+-0.0461     ?      3.0144+-0.0975        ?
   array-with-double-mul-add                          4.3285+-0.2777            4.0943+-0.0980          might be 1.0572x faster
   array-with-double-sum                              3.1616+-0.0863     ?      3.2427+-0.3977        ? might be 1.0256x slower
   array-with-int32-add-sub                           5.8256+-0.2322     ?      5.8328+-0.1457        ?
   array-with-int32-or-double-sum                     3.1936+-0.1072            3.1836+-0.0559        
   ArrayBuffer-DataView-alloc-large-long-lived   
                                                     29.6049+-0.8399     ?     29.8387+-0.9707        ?
   ArrayBuffer-DataView-alloc-long-lived             13.4358+-1.1999           13.0518+-0.8099          might be 1.0294x faster
   ArrayBuffer-Int32Array-byteOffset                  3.4859+-0.0534     ?      3.5280+-0.0397        ? might be 1.0121x slower
   ArrayBuffer-Int8Array-alloc-large-long-lived   
                                                     31.7163+-1.2891     ?     32.1191+-1.4940        ? might be 1.0127x slower
   ArrayBuffer-Int8Array-alloc-long-lived-buffer   
                                                     21.1532+-1.9505           20.1739+-0.4322          might be 1.0485x faster
   ArrayBuffer-Int8Array-alloc-long-lived            14.3355+-2.7075           13.0982+-0.8261          might be 1.0945x faster
   ArrayBuffer-Int8Array-alloc                        9.6305+-0.7883     ?     10.1924+-1.2826        ? might be 1.0583x slower
   asmjs_bool_bug                                     7.6799+-0.3589            7.2941+-0.0933          might be 1.0529x faster
   assign-custom-setter-polymorphic                   2.5430+-0.0332            2.5071+-0.1190          might be 1.0143x faster
   assign-custom-setter                               3.4220+-0.1545            3.3717+-0.1057          might be 1.0149x faster
   basic-set                                          7.6622+-0.2088     ?      7.8449+-0.4000        ? might be 1.0238x slower
   big-int-mul                                        3.5040+-0.3135            3.4219+-0.0779          might be 1.0240x faster
   boolean-test                                       2.8123+-0.0344     ?      2.8895+-0.1368        ? might be 1.0275x slower
   branch-fold                                        3.5496+-0.0371            3.5321+-0.0248        
   branch-on-string-as-boolean                       16.5458+-0.7214           16.2086+-0.5160          might be 1.0208x faster
   by-val-generic                                     7.3910+-0.6577            7.2485+-0.5157          might be 1.0197x faster
   call-spread-apply                                 27.0214+-1.5864           26.4405+-1.1878          might be 1.0220x faster
   call-spread-call                                  20.3468+-0.4546     !     22.8395+-1.1656        ! definitely 1.1225x slower
   captured-assignments                               0.4072+-0.0330            0.3883+-0.0160          might be 1.0486x faster
   cast-int-to-double                                 5.0841+-0.1191            4.9757+-0.0306          might be 1.0218x faster
   cell-argument                                      6.3721+-0.5582     ?      6.4963+-0.6872        ? might be 1.0195x slower
   cfg-simplify                                       2.6740+-0.0248     ?      2.7530+-0.0589        ? might be 1.0295x slower
   chain-getter-access                                8.0256+-0.2971     ?      8.1191+-0.3255        ? might be 1.0117x slower
   cmpeq-obj-to-obj-other                            11.3849+-1.1029     ?     11.9716+-0.4044        ? might be 1.0515x slower
   constant-test                                      4.9884+-0.6115            4.7274+-0.0616          might be 1.0552x faster
   create-lots-of-functions                           8.9725+-0.1549     ?      9.4942+-0.6226        ? might be 1.0581x slower
   cse-new-array-buffer                               2.2208+-0.1436     ?      2.2698+-0.1071        ? might be 1.0221x slower
   cse-new-array                                      2.3174+-0.0751            2.3081+-0.1495        
   DataView-custom-properties                        35.4025+-1.7387           35.2804+-1.5716        
   delay-tear-off-arguments-strictmode               13.0732+-3.0657           12.8787+-1.3578          might be 1.0151x faster
   deltablue-varargs                                149.9764+-2.9696          149.2508+-0.6432        
   destructuring-arguments                          163.5187+-3.2911          159.7962+-1.6571          might be 1.0233x faster
   destructuring-parameters-overridden-by-function   
                                                      0.5188+-0.0296            0.4902+-0.0225          might be 1.0583x faster
   destructuring-swap                                 4.6187+-0.0935     ?      4.6960+-0.1864        ? might be 1.0167x slower
   direct-arguments-getbyval                          1.1681+-0.0929     ?      1.2325+-0.2830        ? might be 1.0551x slower
   div-boolean-double                                 5.2730+-0.0347     ?      5.3421+-0.1446        ? might be 1.0131x slower
   div-boolean                                        8.1910+-0.3385     ?      8.3259+-0.2820        ? might be 1.0165x slower
   double-get-by-val-out-of-bounds                    4.2023+-0.2422     ?      4.2061+-0.1591        ?
   double-pollution-getbyval                          8.6958+-0.3773     ?      8.7330+-0.3084        ?
   double-pollution-putbyoffset                       3.8405+-0.0823            3.7270+-0.1450          might be 1.0304x faster
   double-real-use                                   26.7465+-1.2968           25.8683+-2.6443          might be 1.0339x faster
   double-to-int32-typed-array-no-inline              2.0947+-0.0581            2.0349+-0.0422          might be 1.0294x faster
   double-to-int32-typed-array                        1.8661+-0.2296            1.7254+-0.0605          might be 1.0816x faster
   double-to-uint32-typed-array-no-inline             2.0581+-0.0812     ?      2.0906+-0.0574        ? might be 1.0158x slower
   double-to-uint32-typed-array                       1.8185+-0.0724     ?      1.8430+-0.0682        ? might be 1.0134x slower
   elidable-new-object-dag                           34.5908+-1.4162           34.2881+-1.1906        
   elidable-new-object-roflcopter                    33.6882+-1.3301     ?     34.2599+-2.4213        ? might be 1.0170x slower
   elidable-new-object-then-call                     30.9144+-0.3378           30.8062+-0.7766        
   elidable-new-object-tree                          36.0020+-0.6659     ?     36.4569+-1.3351        ? might be 1.0126x slower
   empty-string-plus-int                              4.5590+-0.1046     ?      4.8957+-0.8894        ? might be 1.0739x slower
   emscripten-cube2hash                              31.9159+-13.9959          26.0400+-1.3087          might be 1.2256x faster
   exit-length-on-plain-object                       13.5055+-1.5522           13.4373+-0.6338        
   external-arguments-getbyval                        1.1980+-0.0734     ?      1.2271+-0.1227        ? might be 1.0243x slower
   external-arguments-putbyval                        2.2003+-0.1125     ?      2.2171+-0.0442        ?
   fixed-typed-array-storage-var-index                1.1415+-0.0419            1.1342+-0.0316        
   fixed-typed-array-storage                          0.8531+-0.0303     ?      0.8851+-0.0393        ? might be 1.0376x slower
   Float32Array-matrix-mult                           3.8194+-0.0304     ?      4.0868+-0.4101        ? might be 1.0700x slower
   Float32Array-to-Float64Array-set                  45.9558+-0.5941     ?     47.2681+-1.3576        ? might be 1.0286x slower
   Float64Array-alloc-long-lived                     76.3004+-2.1005           75.0228+-1.9317          might be 1.0170x faster
   Float64Array-to-Int16Array-set                    56.8357+-1.6589     ?     58.4244+-1.1106        ? might be 1.0280x slower
   fold-double-to-int                                12.5818+-0.2045     ?     12.7843+-0.2442        ? might be 1.0161x slower
   fold-get-by-id-to-multi-get-by-offset-rare-int   
                                                     10.2930+-0.5622     ?     10.5539+-0.3560        ? might be 1.0254x slower
   fold-get-by-id-to-multi-get-by-offset              8.7791+-0.3888     ?      9.0739+-0.8044        ? might be 1.0336x slower
   fold-multi-get-by-offset-to-get-by-offset   
                                                      8.4251+-0.3874            7.7386+-1.2113          might be 1.0887x faster
   fold-multi-get-by-offset-to-poly-get-by-offset   
                                                      7.9478+-0.4111            7.8253+-0.4254          might be 1.0157x faster
   fold-multi-put-by-offset-to-poly-put-by-offset   
                                                      7.7558+-0.6533            7.2279+-0.9221          might be 1.0730x faster
   fold-multi-put-by-offset-to-put-by-offset   
                                                      5.3327+-0.7096            5.1309+-0.7624          might be 1.0393x faster
   fold-multi-put-by-offset-to-replace-or-transition-put-by-offset   
                                                      8.1453+-0.3171     ?      8.3717+-0.5118        ? might be 1.0278x slower
   fold-put-by-id-to-multi-put-by-offset              8.6275+-0.5792     ?      9.0095+-0.5837        ? might be 1.0443x slower
   fold-put-structure                                 5.2469+-0.8767     ?      5.4234+-0.8165        ? might be 1.0336x slower
   for-of-iterate-array-entries                      11.0767+-0.3158           11.0704+-0.4789        
   for-of-iterate-array-keys                          3.5715+-0.2534            3.3563+-0.1525          might be 1.0641x faster
   for-of-iterate-array-values                        3.4497+-0.3280     ?      3.4967+-0.2839        ? might be 1.0136x slower
   fround                                            18.6599+-0.4907     ?     19.3019+-0.9685        ? might be 1.0344x slower
   ftl-library-inlining-dataview                     57.4417+-1.2126           55.9480+-0.5199          might be 1.0267x faster
   ftl-library-inlining                             108.1758+-3.0487          106.9119+-0.5839          might be 1.0118x faster
   function-dot-apply                                 1.9917+-0.0298            1.9698+-0.0534          might be 1.0111x faster
   function-test                                      2.6949+-0.0767     ?      2.7980+-0.2050        ? might be 1.0382x slower
   function-with-eval                                90.9104+-0.5537     ?     90.9151+-2.0192        ?
   gcse-poly-get-less-obvious                        13.9947+-0.1166     ?     14.0779+-0.3812        ?
   gcse-poly-get                                     14.6552+-0.7691           14.6504+-0.7805        
   gcse                                               3.7475+-0.0641     ?      3.9455+-0.4002        ? might be 1.0528x slower
   get-by-id-bimorphic-check-structure-elimination-simple   
                                                      2.7837+-0.6271            2.6086+-0.2563          might be 1.0671x faster
   get-by-id-bimorphic-check-structure-elimination   
                                                      5.7993+-0.3082            5.6040+-0.0796          might be 1.0348x faster
   get-by-id-chain-from-try-block                     5.5528+-0.4232            5.5284+-0.3228        
   get-by-id-check-structure-elimination              4.3136+-0.1171            4.2813+-0.0214        
   get-by-id-proto-or-self                           14.5460+-1.1876     ?     14.8327+-1.2995        ? might be 1.0197x slower
   get-by-id-quadmorphic-check-structure-elimination-simple   
                                                      3.0567+-0.1142            3.0209+-0.0547          might be 1.0119x faster
   get-by-id-self-or-proto                           14.8810+-1.0215     ?     15.3802+-1.2610        ? might be 1.0336x slower
   get-by-val-out-of-bounds                           3.9988+-0.1547            3.9928+-0.0899        
   get_callee_monomorphic                             2.6216+-0.8601            2.5658+-0.5688          might be 1.0217x faster
   get_callee_polymorphic                             3.2271+-0.2236     ?      3.3311+-0.3975        ? might be 1.0322x slower
   getter-no-activation                               4.7971+-0.1038            4.7936+-0.1406        
   getter-prototype                                   9.6741+-0.0661            9.6012+-0.1700        
   getter-richards                                  122.3463+-3.0212     ?    123.2905+-4.8778        ?
   getter                                             5.4231+-0.1831            5.2615+-0.3671          might be 1.0307x faster
   global-var-const-infer-fire-from-opt               0.9074+-0.1237     ?      0.9094+-0.0316        ?
   global-var-const-infer                             0.7787+-0.1064            0.7290+-0.0747          might be 1.0682x faster
   HashMap-put-get-iterate-keys                      26.9036+-2.4666           25.2405+-0.5491          might be 1.0659x faster
   HashMap-put-get-iterate                           26.0706+-1.6798     ?     26.5217+-1.5194        ? might be 1.0173x slower
   HashMap-string-put-get-iterate                    23.9644+-1.3856     ?     24.6728+-0.7969        ? might be 1.0296x slower
   hoist-make-rope                                    8.6466+-2.0691            7.9860+-0.5085          might be 1.0827x faster
   hoist-poly-check-structure-effectful-loop   
                                                      4.2696+-0.1330     ?      4.2945+-0.1794        ?
   hoist-poly-check-structure                         3.2115+-0.0414            3.2104+-0.0394        
   imul-double-only                                   6.9454+-0.3151     ?      7.5367+-0.9707        ? might be 1.0851x slower
   imul-int-only                                      9.6052+-0.7229            8.6705+-0.7682          might be 1.1078x faster
   imul-mixed                                         6.5059+-0.2719     ?      7.0554+-0.5493        ? might be 1.0845x slower
   in-four-cases                                     17.1980+-0.5900           17.1108+-0.3180        
   in-one-case-false                                  9.2378+-0.2020     ?      9.5920+-0.5495        ? might be 1.0383x slower
   in-one-case-true                                   9.3166+-0.3481     ?      9.3955+-0.5524        ?
   in-two-cases                                       9.4136+-0.1244            9.2985+-0.1182          might be 1.0124x faster
   indexed-properties-in-objects                      2.8410+-0.0781     ?      2.9353+-0.4532        ? might be 1.0332x slower
   infer-closure-const-then-mov-no-inline             3.1618+-0.1977     ?      3.1762+-0.1445        ?
   infer-closure-const-then-mov                      17.5612+-0.4980           17.2535+-0.3721          might be 1.0178x faster
   infer-closure-const-then-put-to-scope-no-inline   
                                                     10.4930+-0.2581     ?     10.9076+-0.7355        ? might be 1.0395x slower
   infer-closure-const-then-put-to-scope             21.1184+-0.6233           21.0830+-0.6207        
   infer-closure-const-then-reenter-no-inline   
                                                     50.1606+-1.2312     ?     50.7266+-1.1435        ? might be 1.0113x slower
   infer-closure-const-then-reenter                  21.6685+-0.6002           21.3019+-0.5991          might be 1.0172x faster
   infer-constant-global-property                     3.3726+-0.0738     ?      3.5016+-0.3059        ? might be 1.0382x slower
   infer-constant-property                            2.5879+-0.0680     ?      2.6002+-0.0814        ?
   infer-one-time-closure-ten-vars                    8.3044+-0.1785     ?      8.3826+-0.2319        ?
   infer-one-time-closure-two-vars                    8.2138+-0.6507            7.9294+-0.5497          might be 1.0359x faster
   infer-one-time-closure                             7.5867+-0.1169     ?      8.2011+-0.7902        ? might be 1.0810x slower
   infer-one-time-deep-closure                       12.4618+-0.3508     ?     12.6062+-0.2638        ? might be 1.0116x slower
   inline-arguments-access                            3.6296+-0.2138     ?      3.7234+-0.2910        ? might be 1.0259x slower
   inline-arguments-aliased-access                    3.7677+-0.4585            3.5732+-0.1335          might be 1.0544x faster
   inline-arguments-local-escape                      3.6157+-0.1362     ?      3.9360+-0.4817        ? might be 1.0886x slower
   inline-get-scoped-var                              4.5003+-0.0804     ?      4.5907+-0.1181        ? might be 1.0201x slower
   inlined-put-by-id-transition                      10.5422+-0.4141     ?     10.5488+-0.5548        ?
   int-or-other-abs-then-get-by-val                   4.6808+-0.0556     ?      4.7321+-0.0188        ? might be 1.0110x slower
   int-or-other-abs-zero-then-get-by-val             16.3264+-0.4121     ?     16.4489+-0.9067        ?
   int-or-other-add-then-get-by-val                   4.0106+-0.1557     ?      4.0617+-0.1670        ? might be 1.0127x slower
   int-or-other-add                                   5.0457+-0.5943            4.7923+-0.0677          might be 1.0529x faster
   int-or-other-div-then-get-by-val                   3.6679+-0.1146     ?      3.6946+-0.1878        ?
   int-or-other-max-then-get-by-val                   4.0708+-0.1503            4.0135+-0.0568          might be 1.0143x faster
   int-or-other-min-then-get-by-val                   4.1650+-0.0355     ?      4.1880+-0.0428        ?
   int-or-other-mod-then-get-by-val                   3.4038+-0.0341     ?      3.4604+-0.1413        ? might be 1.0166x slower
   int-or-other-mul-then-get-by-val                   3.5711+-0.0734            3.5536+-0.0460        
   int-or-other-neg-then-get-by-val                   4.5151+-0.1969            4.4043+-0.0379          might be 1.0252x faster
   int-or-other-neg-zero-then-get-by-val             15.8495+-0.1917     ?     16.2463+-1.1919        ? might be 1.0250x slower
   int-or-other-sub-then-get-by-val                   4.0842+-0.1286            3.9874+-0.0777          might be 1.0243x faster
   int-or-other-sub                                   3.5232+-0.3714            3.3308+-0.0632          might be 1.0577x faster
   int-overflow-local                                 4.2768+-0.0263            4.2406+-0.1319        
   Int16Array-alloc-long-lived                       51.2503+-8.6532           49.0780+-1.1434          might be 1.0443x faster
   Int16Array-bubble-sort-with-byteLength            19.2660+-1.0282           18.7196+-0.3871          might be 1.0292x faster
   Int16Array-bubble-sort                            19.1557+-0.4236           18.7719+-0.3045          might be 1.0204x faster
   Int16Array-load-int-mul                            1.4975+-0.1880            1.3842+-0.0169          might be 1.0819x faster
   Int16Array-to-Int32Array-set                      44.3891+-1.0074           43.2289+-1.2727          might be 1.0268x faster
   Int32Array-alloc-large                            12.8733+-0.8368           12.5588+-1.0825          might be 1.0250x faster
   Int32Array-alloc-long-lived                       59.6112+-1.3454     ^     56.1466+-1.0542        ^ definitely 1.0617x faster
   Int32Array-alloc                                   2.8723+-0.2037     ?      3.0385+-0.2082        ? might be 1.0578x slower
   Int32Array-Int8Array-view-alloc                    6.2190+-0.3918            6.0153+-0.2290          might be 1.0339x faster
   int52-spill                                        4.8763+-0.7825            4.6735+-0.2218          might be 1.0434x faster
   Int8Array-alloc-long-lived                        43.6636+-2.5907           42.3926+-0.7373          might be 1.0300x faster
   Int8Array-load-with-byteLength                     3.3512+-0.1014     ?      3.4268+-0.2715        ? might be 1.0225x slower
   Int8Array-load                                     3.3512+-0.0550            3.2915+-0.0177          might be 1.0181x faster
   integer-divide                                    10.4280+-0.2766           10.3573+-0.3566        
   integer-modulo                                     1.6034+-0.0539     ?      1.6965+-0.1349        ? might be 1.0581x slower
   is-boolean-fold-tricky                             3.7322+-0.1265            3.7159+-0.1127        
   is-boolean-fold                                    2.6455+-0.1231            2.6025+-0.0313          might be 1.0165x faster
   is-function-fold-tricky-internal-function   
                                                     10.4347+-1.1356           10.1148+-0.4286          might be 1.0316x faster
   is-function-fold-tricky                            4.1510+-0.2279            3.9908+-0.0297          might be 1.0402x faster
   is-function-fold                                   2.6377+-0.0546     ?      2.6542+-0.1027        ?
   is-number-fold-tricky                              4.1186+-0.4125            3.9772+-0.0846          might be 1.0356x faster
   is-number-fold                                     2.5861+-0.0443     ?      2.6257+-0.2062        ? might be 1.0153x slower
   is-object-or-null-fold-functions                   2.6357+-0.0808     ?      2.6531+-0.0731        ?
   is-object-or-null-fold-less-tricky                 4.0660+-0.0977            4.0179+-0.0437          might be 1.0120x faster
   is-object-or-null-fold-tricky                      5.0679+-0.1874     ?      5.2991+-0.1351        ? might be 1.0456x slower
   is-object-or-null-fold                             2.7171+-0.2104            2.6652+-0.1568          might be 1.0195x faster
   is-object-or-null-trickier-function                4.0757+-0.2136            4.0726+-0.0544        
   is-object-or-null-trickier-internal-function   
                                                     10.2196+-0.0671     ?     10.2923+-0.2977        ?
   is-object-or-null-tricky-function                  4.0376+-0.0825     ?      4.1359+-0.3209        ? might be 1.0243x slower
   is-object-or-null-tricky-internal-function   
                                                      7.9084+-0.2359            7.8897+-0.0945        
   is-string-fold-tricky                              4.0813+-0.3110            3.9575+-0.0507          might be 1.0313x faster
   is-string-fold                                     2.6128+-0.0639            2.5789+-0.0495          might be 1.0132x faster
   is-undefined-fold-tricky                           3.2549+-0.0130     ?      3.2585+-0.0722        ?
   is-undefined-fold                                  2.5490+-0.0284     ?      2.5570+-0.0275        ?
   large-int-captured                                 3.7687+-0.1070     ?      3.9777+-0.2551        ? might be 1.0555x slower
   large-int-neg                                     13.9014+-0.5057     ?     13.9451+-0.5392        ?
   large-int                                         13.3271+-0.1917           13.2307+-0.3330        
   load-varargs-elimination                          21.6114+-0.4972     ?     21.8825+-1.1684        ? might be 1.0125x slower
   logical-not-weird-types                            2.8350+-0.0638     ?      2.8844+-0.0652        ? might be 1.0174x slower
   logical-not                                        4.1071+-0.0885     ?      4.4098+-0.8462        ? might be 1.0737x slower
   lots-of-fields                                     9.7264+-0.4484     ?     10.1078+-0.7346        ? might be 1.0392x slower
   make-indexed-storage                               2.9614+-0.1144            2.9019+-0.3709          might be 1.0205x faster
   make-rope-cse                                      3.5482+-0.0794     ?      3.6549+-0.2554        ? might be 1.0301x slower
   marsaglia-larger-ints                             33.2672+-1.9926     ?     33.6495+-1.7605        ? might be 1.0115x slower
   marsaglia-osr-entry                               20.4699+-0.6368     ?     20.7410+-0.4209        ? might be 1.0132x slower
   math-with-out-of-bounds-array-values              21.7961+-0.8621           21.2048+-0.5494          might be 1.0279x faster
   max-boolean                                        2.3948+-0.0331     ?      2.4188+-0.0583        ? might be 1.0100x slower
   method-on-number                                  15.4924+-0.2374     ?     15.8607+-0.9747        ? might be 1.0238x slower
   min-boolean                                        2.5167+-0.1651            2.4397+-0.0458          might be 1.0316x faster
   minus-boolean-double                               3.0116+-0.0391     ?      3.0605+-0.0823        ? might be 1.0162x slower
   minus-boolean                                      2.2630+-0.0087     ?      2.3295+-0.0891        ? might be 1.0294x slower
   misc-strict-eq                                    31.1443+-1.6330     ?     31.3869+-2.8123        ?
   mod-boolean-double                                11.1900+-0.3066           11.1380+-0.3273        
   mod-boolean                                        8.3415+-0.2731     ?      8.3430+-0.2808        ?
   mul-boolean-double                                 3.6948+-0.4474            3.5724+-0.0704          might be 1.0343x faster
   mul-boolean                                        2.8226+-0.2512            2.7386+-0.0970          might be 1.0306x faster
   neg-boolean                                        3.1446+-0.2720            3.0562+-0.0703          might be 1.0289x faster
   negative-zero-divide                               0.3581+-0.0839            0.3260+-0.0113          might be 1.0984x faster
   negative-zero-modulo                               0.3161+-0.0140     ?      0.3249+-0.0055        ? might be 1.0278x slower
   negative-zero-negate                               0.4005+-0.2205            0.3027+-0.0234          might be 1.3232x faster
   nested-function-parsing                           44.4925+-0.9214     ?     44.5702+-0.8277        ?
   new-array-buffer-dead                             88.0070+-1.4786     ?     88.5495+-1.3595        ?
   new-array-buffer-push                              6.4767+-0.9748            5.8685+-0.1127          might be 1.1036x faster
   new-array-dead                                    15.5901+-1.4227           14.5540+-0.7729          might be 1.0712x faster
   new-array-push                                     6.2341+-0.4023     ?      6.3251+-0.1925        ? might be 1.0146x slower
   no-inline-constructor                             31.7057+-1.3803           30.8189+-0.6273          might be 1.0288x faster
   number-test                                        2.9064+-0.2967            2.8444+-0.0765          might be 1.0218x faster
   object-closure-call                                4.8964+-0.1738     ?      4.9536+-0.1371        ? might be 1.0117x slower
   object-get-own-property-symbols-on-large-array   
                                                      4.0402+-0.2178     ?      4.3875+-0.4926        ? might be 1.0860x slower
   object-test                                        2.7687+-0.4498            2.5859+-0.0294          might be 1.0707x faster
   obvious-sink-pathology-taken                      98.6837+-0.6510     ?     99.0963+-1.2226        ?
   obvious-sink-pathology                            94.7308+-1.3962     ?     94.8207+-0.5063        ?
   obviously-elidable-new-object                     28.1588+-2.6038           28.0127+-2.1689        
   plus-boolean-arith                                 2.3678+-0.0750     ?      2.4099+-0.0504        ? might be 1.0178x slower
   plus-boolean-double                                3.0463+-0.0348            3.0059+-0.0426          might be 1.0135x faster
   plus-boolean                                       2.5448+-0.0628     ?      2.5778+-0.0983        ? might be 1.0130x slower
   poly-chain-access-different-prototypes-simple   
                                                      2.6755+-0.0489     ?      2.7028+-0.0551        ? might be 1.0102x slower
   poly-chain-access-different-prototypes             2.4978+-0.0629            2.4845+-0.0267        
   poly-chain-access-simpler                          2.7169+-0.1557     ?      2.7563+-0.1361        ? might be 1.0145x slower
   poly-chain-access                                  2.4439+-0.0230     ?      2.4642+-0.0708        ?
   poly-stricteq                                     50.1281+-0.7738           49.8966+-0.7047        
   polymorphic-array-call                             1.2262+-0.0741     ?      1.2438+-0.0788        ? might be 1.0143x slower
   polymorphic-get-by-id                              2.8932+-0.0842            2.8155+-0.0415          might be 1.0276x faster
   polymorphic-put-by-id                             24.5063+-0.8405     ?     25.1983+-0.8384        ? might be 1.0282x slower
   polymorphic-structure                             13.2455+-0.4062           12.9648+-0.0450          might be 1.0216x faster
   polyvariant-monomorphic-get-by-id                  6.6508+-0.5904            6.2895+-0.4911          might be 1.0574x faster
   proto-getter-access                                8.0860+-0.2259            8.0269+-0.1523        
   put-by-id-replace-and-transition                   8.0857+-0.5762            7.9629+-0.9627          might be 1.0154x faster
   put-by-id-slightly-polymorphic                     2.7766+-0.0782            2.7349+-0.0241          might be 1.0153x faster
   put-by-id                                          9.9388+-0.6374     ?      9.9738+-0.7494        ?
   put-by-val-direct                                  0.3105+-0.0115     ?      0.3635+-0.0830        ? might be 1.1705x slower
   put-by-val-large-index-blank-indexing-type   
                                                     11.8694+-0.6256           11.6779+-0.4655          might be 1.0164x faster
   put-by-val-machine-int                             2.4141+-0.1265     ?      2.4650+-0.1111        ? might be 1.0211x slower
   rare-osr-exit-on-local                            14.5229+-0.4156           14.2567+-0.1986          might be 1.0187x faster
   register-pressure-from-osr                        16.2419+-0.5579           16.1403+-0.2205        
   repeat-multi-get-by-offset                        22.9311+-6.5259           20.6283+-1.1983          might be 1.1116x faster
   setter-prototype                                   7.5699+-0.3210            7.5035+-0.0871        
   setter                                             5.6071+-0.3700            5.4455+-0.6705          might be 1.0297x faster
   simple-activation-demo                            24.2675+-0.3347     ?     24.7192+-0.6754        ? might be 1.0186x slower
   simple-getter-access                              10.3222+-0.3194     ?     10.5614+-0.4422        ? might be 1.0232x slower
   simple-overflow-elimination                       18.1696+-1.1723           17.8712+-0.7953          might be 1.0167x faster
   simple-poly-call-nested                            8.3789+-0.1901     ?      8.6956+-0.5871        ? might be 1.0378x slower
   simple-poly-call                                   1.2261+-0.0325     ?      1.3496+-0.1764        ? might be 1.1007x slower
   sin-boolean                                       19.0706+-1.7101           18.2181+-1.2121          might be 1.0468x faster
   singleton-scope                                   54.6629+-0.8890     ?     55.3821+-0.5423        ? might be 1.0132x slower
   sink-function                                      9.4944+-0.5794            9.4445+-0.6264        
   sink-huge-activation                              16.0570+-0.4736     ?     16.3044+-0.6387        ? might be 1.0154x slower
   sinkable-new-object-dag                           56.6399+-3.0566           55.2991+-1.7036          might be 1.0242x faster
   sinkable-new-object-taken                         45.9088+-11.3649          43.7761+-3.3150          might be 1.0487x faster
   sinkable-new-object                               29.5852+-1.3441     ?     30.2838+-1.2566        ? might be 1.0236x slower
   slow-array-profile-convergence                     2.4532+-0.0761     ?      2.4838+-0.1565        ? might be 1.0125x slower
   slow-convergence                                   2.3541+-0.1038            2.3537+-0.0475        
   slow-ternaries                                    17.2269+-0.3726     ?     18.0969+-0.7387        ? might be 1.0505x slower
   sorting-benchmark                                 17.0498+-0.9716     ?     17.0608+-0.8011        ?
   sparse-conditional                                 1.1375+-0.0874     ?      1.1600+-0.1167        ? might be 1.0198x slower
   splice-to-remove                                  12.9846+-1.5204           11.9736+-0.2243          might be 1.0844x faster
   string-char-code-at                               14.3606+-0.7142     ?     14.4662+-0.8853        ?
   string-concat-object                               2.2166+-0.0770     ?      2.4333+-0.5197        ? might be 1.0977x slower
   string-concat-pair-object                          2.1617+-0.2417            2.0380+-0.1322          might be 1.0607x faster
   string-concat-pair-simple                          9.3958+-0.6338            9.3282+-0.4658        
   string-concat-simple                               9.1179+-0.5986     ?      9.4707+-1.2754        ? might be 1.0387x slower
   string-cons-repeat                                 6.4654+-0.3502     ?      7.2699+-2.4462        ? might be 1.1244x slower
   string-cons-tower                                  7.0721+-1.2781            6.8032+-0.5712          might be 1.0395x faster
   string-equality                                   14.9621+-0.3646           14.9264+-0.3128        
   string-get-by-val-big-char                         6.4692+-0.1614     ?      6.6650+-0.7735        ? might be 1.0303x slower
   string-get-by-val-out-of-bounds-insane             3.2288+-0.0411     ?      3.3632+-0.3074        ? might be 1.0416x slower
   string-get-by-val-out-of-bounds                    4.0001+-0.0782     ?      4.1580+-0.2672        ? might be 1.0395x slower
   string-get-by-val                                  2.7948+-0.0970            2.7756+-0.0284        
   string-hash                                        1.9657+-0.1924            1.8713+-0.0071          might be 1.0504x faster
   string-long-ident-equality                        12.4623+-0.1974     ?     12.6849+-0.4906        ? might be 1.0179x slower
   string-out-of-bounds                              10.1368+-0.2077     ?     10.4786+-0.4270        ? might be 1.0337x slower
   string-repeat-arith                               26.7947+-0.4875     ?     27.8263+-0.8921        ? might be 1.0385x slower
   string-sub                                        54.0154+-3.4458     ?     54.5264+-1.6107        ?
   string-test                                        2.8105+-0.2448            2.7154+-0.0948          might be 1.0350x faster
   string-var-equality                               25.9011+-1.2231           25.8263+-0.4795        
   structure-hoist-over-transitions                   2.5045+-0.2837            2.3808+-0.0795          might be 1.0520x faster
   substring-concat-weird                            36.2114+-1.1506     ?     38.0812+-6.2106        ? might be 1.0516x slower
   substring-concat                                  40.9380+-2.0283           40.1535+-1.7874          might be 1.0195x faster
   substring                                         44.0672+-1.2349     ?     44.1003+-1.3471        ?
   switch-char-constant                               2.6827+-0.0518            2.6193+-0.0497          might be 1.0242x faster
   switch-char                                        5.7626+-0.5668            5.6498+-0.6848          might be 1.0200x faster
   switch-constant                                    8.3916+-0.5839     ?      9.3425+-0.6001        ? might be 1.1133x slower
   switch-string-basic-big-var                       15.7736+-1.1550           15.5082+-0.5096          might be 1.0171x faster
   switch-string-basic-big                           14.8953+-0.3619           14.8426+-0.1858        
   switch-string-basic-var                           13.2093+-0.2000     ?     13.8535+-0.8934        ? might be 1.0488x slower
   switch-string-basic                               12.9609+-0.7371     ?     12.9671+-0.3546        ?
   switch-string-big-length-tower-var                18.0328+-1.1251           17.2847+-0.1869          might be 1.0433x faster
   switch-string-length-tower-var                    13.0299+-0.6623           12.9490+-0.2711        
   switch-string-length-tower                        11.6407+-0.2625     ?     11.6550+-0.3119        ?
   switch-string-short                               11.5927+-0.1314     ?     11.8975+-0.4287        ? might be 1.0263x slower
   switch                                            13.1782+-1.2798           12.7296+-1.5731          might be 1.0352x faster
   tear-off-arguments-simple                          2.9708+-0.1082     ?      3.0725+-0.3446        ? might be 1.0342x slower
   tear-off-arguments                                 3.9869+-0.1952     ?      4.0946+-0.5691        ? might be 1.0270x slower
   temporal-structure                                12.8685+-0.2534     ?     13.2090+-0.4591        ? might be 1.0265x slower
   to-int32-boolean                                  13.1418+-0.3310           12.8767+-0.0726          might be 1.0206x faster
   try-catch-get-by-val-cloned-arguments             14.2893+-1.0334     ?     14.5112+-0.7656        ? might be 1.0155x slower
   try-catch-get-by-val-direct-arguments              6.4133+-0.3210     ?      7.1783+-1.5576        ? might be 1.1193x slower
   try-catch-get-by-val-scoped-arguments              7.5043+-0.2041     ?      7.9721+-0.9439        ? might be 1.0623x slower
   typed-array-get-set-by-val-profiling              27.6608+-0.5063           27.5710+-1.3952        
   undefined-property-access                        230.3969+-3.0536     ?    232.8011+-10.9893       ? might be 1.0104x slower
   undefined-test                                     2.8398+-0.1047     ?      2.8477+-0.1261        ?
   unprofiled-licm                                   13.7201+-0.2526     ?     13.9787+-0.7495        ? might be 1.0188x slower
   varargs-call                                      14.2452+-0.3859           13.9184+-0.2503          might be 1.0235x faster
   varargs-construct-inline                          22.7967+-1.3233           21.8451+-0.5824          might be 1.0436x faster
   varargs-construct                                 20.1053+-0.6515     ?     20.1420+-0.4356        ?
   varargs-inline                                     8.7729+-0.5657            8.6355+-0.6016          might be 1.0159x faster
   varargs-strict-mode                                9.2339+-0.5502            9.0269+-0.4257          might be 1.0229x faster
   varargs                                            8.8099+-0.0632     ?      9.1005+-0.5221        ? might be 1.0330x slower
   weird-inlining-const-prop                          2.7171+-0.0830     ?      2.8826+-0.3299        ? might be 1.0609x slower

   <geometric>                                        7.8280+-0.0174            7.8236+-0.0233          might be 1.0006x faster

                                                        TipOfTree                FixArguments                                   
AsmBench:
   bigfib.cpp                                       450.4335+-3.3293     ?    453.2744+-3.1850        ?
   cray.c                                           395.9462+-3.5515     ?    423.9152+-69.0051       ? might be 1.0706x slower
   dry.c                                            429.8786+-1.9806     ?    444.7535+-78.2411       ? might be 1.0346x slower
   FloatMM.c                                        680.0541+-1.9247     ?    681.0485+-2.9354        ?
   gcc-loops.cpp                                   3430.4170+-34.8822        3420.6209+-20.3110       
   n-body.c                                         820.3732+-1.5931     ?    821.4724+-3.3561        ?
   Quicksort.c                                      402.8390+-3.2953     ?    403.1043+-3.4246        ?
   stepanov_container.cpp                          3539.6003+-19.3750    ?   3541.2036+-25.5900       ?
   Towers.c                                         257.7080+-65.7123         232.5013+-2.1895          might be 1.1084x faster

   <geometric>                                      721.4547+-17.7067    ?    722.0111+-13.7425       ? might be 1.0008x slower

                                                        TipOfTree                FixArguments                                   
CompressionBench:
   huffman                                           59.1470+-1.2497     ?     59.6040+-0.8063        ?
   arithmetic-simple                                265.4021+-1.1521     ?    267.5835+-1.8086        ?
   arithmetic-precise                               242.2383+-1.0583     ?    243.6343+-1.6146        ?
   arithmetic-complex-precise                       246.1506+-2.9749     ?    246.8631+-5.9201        ?
   arithmetic-precise-order-0                       275.2866+-1.9443     ?    276.8551+-1.0710        ?
   arithmetic-precise-order-1                       307.1308+-7.4902          304.9088+-1.2169        
   arithmetic-precise-order-2                       354.2978+-3.2978     ?    355.9127+-6.1479        ?
   arithmetic-simple-order-1                        321.7066+-1.3100     ?    322.7546+-2.1647        ?
   arithmetic-simple-order-2                        380.9090+-3.8948     ?    382.9661+-8.5936        ?
   lz-string                                        306.0782+-6.6673     ?    309.2286+-6.8780        ? might be 1.0103x slower

   <geometric>                                      252.4386+-0.3218     ?    253.6110+-1.1810        ? might be 1.0046x slower

                                                        TipOfTree                FixArguments                                   
Geomean of preferred means:
   <scaled-result>                                   51.8200+-0.2903     ?     51.8531+-0.1978        ? might be 1.0006x slower
Comment 3 Mark Lam 2015-07-29 22:56:35 PDT
Comment on attachment 257808 [details]
the patch

r=me
Comment 4 Filip Pizlo 2015-07-29 23:28:52 PDT
Landed in http://trac.webkit.org/changeset/187579
Comment 5 Mark Lam 2015-07-30 11:54:30 PDT
<rdar://problem/21668986>