[Webkit-unassigned] [Bug 71427] Inlined uses of the global object should use the right global object
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Wed Nov 2 19:52:23 PDT 2011
https://bugs.webkit.org/show_bug.cgi?id=71427
--- Comment #4 from Filip Pizlo <fpizlo at apple.com> 2011-11-02 19:52:23 PST ---
Looks performance neutral and all tests pass.
Benchmark report for SunSpider, V8, and Kraken.
VMs tested:
"TipOfTree" at /Volumes/Data/pizlo/tertiary/OpenSource/WebKitBuild/Release/jsc
"FixInlineGlobal" at /Volumes/Data/pizlo/secondary/OpenSource/WebKitBuild/Release/jsc
Collected 12 samples per benchmark/VM, with 4 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 FixInlineGlobal
SunSpider:
3d-cube 7.9055+-0.0250 7.9030+-0.0245
3d-morph 8.4010+-0.0327 8.3968+-0.0273
3d-raytrace 8.2108+-0.0663 8.1345+-0.0946
access-binary-trees 1.7229+-0.0395 1.6849+-0.0058 might be 1.0226x faster
access-fannkuch 7.8228+-0.0070 ? 7.8424+-0.0260 ?
access-nbody 4.5250+-0.0182 ? 4.5274+-0.0092 ?
access-nsieve 3.1817+-0.0122 ? 3.2215+-0.0327 ? might be 1.0125x slower
bitops-3bit-bits-in-byte 1.2934+-0.0156 ? 1.2998+-0.0149 ?
bitops-bits-in-byte 4.9984+-0.0076 4.9842+-0.0120
bitops-bitwise-and 3.4312+-0.0617 ? 3.4583+-0.0728 ?
bitops-nsieve-bits 5.6541+-0.0357 ? 5.6871+-0.0369 ?
controlflow-recursive 2.3309+-0.0122 ? 2.3598+-0.0281 ? might be 1.0124x slower
crypto-aes 7.7440+-0.0641 7.7323+-0.0451
crypto-md5 2.8935+-0.0283 2.8830+-0.0122
crypto-sha1 2.6501+-0.0400 2.6337+-0.0210
date-format-tofte 10.8381+-0.1213 10.7141+-0.0460 might be 1.0116x faster
date-format-xparb 10.0780+-0.1998 ^ 9.7163+-0.1056 ^ definitely 1.0372x faster
math-cordic 7.2948+-0.0635 7.2656+-0.0419
math-partial-sums 10.5843+-0.0257 10.5822+-0.0750
math-spectral-norm 2.9087+-0.0334 2.8803+-0.0069
regexp-dna 13.4231+-0.1595 ? 13.4949+-0.1883 ?
string-base64 4.3142+-0.0267 4.2876+-0.0140
string-fasta 7.1573+-0.0114 ^ 7.1321+-0.0136 ^ definitely 1.0035x faster
string-tagcloud 13.2550+-0.1296 ? 13.2607+-0.1008 ?
string-unpack-code 23.0323+-0.1087 22.9692+-0.1619
string-validate-input 5.6430+-0.0265 ? 5.6622+-0.0404 ?
<arithmetic> * 6.9729+-0.0207 6.9505+-0.0238
<geometric> 5.6266+-0.0158 5.6126+-0.0150
<harmonic> 4.4490+-0.0168 4.4406+-0.0118
TipOfTree FixInlineGlobal
V8:
crypto 81.1349+-0.2988 80.8813+-0.2027
deltablue 182.6440+-0.9418 182.6097+-1.9133
earley-boyer 111.4420+-0.2287 111.3792+-0.4176
raytrace 69.1373+-0.3317 ! 70.0228+-0.5185 ! definitely 1.0128x slower
regexp 125.9373+-0.5356 125.8627+-0.1749
richards 144.1570+-0.5759 ? 145.0371+-0.3479 ?
splay 90.5705+-0.9146 90.4614+-1.1537
<arithmetic> 115.0033+-0.1811 ? 115.1792+-0.2915 ?
<geometric> * 109.4122+-0.1859 ? 109.6156+-0.2958 ?
<harmonic> 104.2286+-0.2096 ? 104.4777+-0.3322 ?
TipOfTree FixInlineGlobal
Kraken:
ai-astar 818.0541+-10.8419 ? 827.8603+-0.5665 ? might be 1.0120x slower
audio-beat-detection 209.9056+-1.0301 209.7902+-0.8383
audio-dft 262.9032+-1.8822 260.7352+-2.4678
audio-fft 136.9000+-0.5795 ? 137.1937+-0.7243 ?
audio-oscillator 317.5338+-30.9262 290.2611+-1.1621 might be 1.0940x faster
imaging-darkroom 338.8633+-5.6019 338.4315+-5.8906
imaging-desaturate 240.9064+-0.0799 ? 240.9227+-0.1222 ?
imaging-gaussian-blur 621.3248+-0.9010 621.1927+-0.3395
json-parse-financial 70.4761+-0.1563 ? 70.5841+-0.1556 ?
json-stringify-tinderbox 79.2334+-0.2014 ? 79.5120+-0.6848 ?
stanford-crypto-aes 116.6959+-0.7287 116.5538+-0.6824
stanford-crypto-ccm 114.7526+-0.5635 ! 115.8885+-0.5538 ! definitely 1.0099x slower
stanford-crypto-pbkdf2 234.7142+-0.5188 ? 235.8879+-1.0809 ?
stanford-crypto-sha256-iterative 97.5235+-0.2353 ? 97.6753+-0.1444 ?
<arithmetic> * 261.4134+-2.5696 260.1778+-0.3637
<geometric> 200.4197+-1.3682 199.6099+-0.2592
<harmonic> 159.7703+-0.5276 159.6421+-0.2686
TipOfTree FixInlineGlobal
All benchmarks:
<arithmetic> 98.8533+-0.7571 98.4991+-0.1172
<geometric> 25.3745+-0.0676 25.3164+-0.0442
<harmonic> 7.8349+-0.0288 7.8206+-0.0204
TipOfTree FixInlineGlobal
Geomean of preferred means:
<scaled-result> 58.4237+-0.1967 58.3067+-0.1016
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