[Webkit-unassigned] [Bug 72878] Strength reduction for Mul and Mod operations for known constants in 32bit DFG
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Tue Nov 22 18:59:13 PST 2011
https://bugs.webkit.org/show_bug.cgi?id=72878
--- Comment #6 from Yuqiang Xian <yuqiang.xian at intel.com> 2011-11-22 18:59:13 PST ---
Performance results on "64-bit": 1% on SunSpider, neutral elsewhere.
SunSpider:
TEST COMPARISON FROM TO DETAILS
=============================================================================
** TOTAL **: 1.011x as fast 181.7ms +/- 0.9% 179.7ms +/- 0.6% significant
=============================================================================
3d: - 26.7ms +/- 1.8% 26.4ms +/- 1.4%
cube: - 10.0ms +/- 0.0% 10.0ms +/- 0.0%
morph: - 8.0ms +/- 0.0% 8.0ms +/- 0.0%
raytrace: - 8.7ms +/- 5.5% 8.4ms +/- 4.4%
access: - 17.1ms +/- 6.4% 16.9ms +/- 4.2%
binary-trees: - 2.6ms +/- 23.2% 2.4ms +/- 25.1%
fannkuch: - 7.3ms +/- 4.7% 7.1ms +/- 3.2%
nbody: - 4.0ms +/- 0.0% 4.0ms +/- 0.0%
nsieve: ?? 3.2ms +/- 14.1% 3.4ms +/- 10.9% not conclusive: might be *1.063x as slow*
bitops: - 13.5ms +/- 3.7% 13.1ms +/- 1.7%
3bit-bits-in-byte: - 1.0ms +/- 0.0% 1.0ms +/- 0.0%
bits-in-byte: - 4.3ms +/- 8.0% 4.1ms +/- 5.5%
bitwise-and: - 3.1ms +/- 7.3% 3.0ms +/- 0.0%
nsieve-bits: - 5.1ms +/- 4.4% 5.0ms +/- 0.0%
controlflow: - 2.0ms +/- 0.0% 2.0ms +/- 0.0%
recursive: - 2.0ms +/- 0.0% 2.0ms +/- 0.0%
crypto: ?? 11.0ms +/- 0.0% 11.1ms +/- 2.0% not conclusive: might be *1.009x as slow*
aes: ?? 7.0ms +/- 0.0% 7.1ms +/- 3.2% not conclusive: might be *1.014x as slow*
md5: - 2.0ms +/- 0.0% 2.0ms +/- 0.0%
sha1: - 2.0ms +/- 0.0% 2.0ms +/- 0.0%
date: 1.052x as fast 24.4ms +/- 1.5% 23.2ms +/- 1.3% significant
format-tofte: - 12.4ms +/- 3.0% 12.2ms +/- 2.5%
format-xparb: 1.091x as fast 12.0ms +/- 0.0% 11.0ms +/- 0.0% significant
math: - 19.0ms +/- 0.0% 19.0ms +/- 0.0%
cordic: - 7.0ms +/- 0.0% 7.0ms +/- 0.0%
partial-sums: - 10.0ms +/- 0.0% 10.0ms +/- 0.0%
spectral-norm: - 2.0ms +/- 0.0% 2.0ms +/- 0.0%
regexp: - 14.0ms +/- 0.0% 14.0ms +/- 0.0%
dna: - 14.0ms +/- 0.0% 14.0ms +/- 0.0%
string: - 54.0ms +/- 0.0% 54.0ms +/- 0.0%
base64: - 4.0ms +/- 0.0% 4.0ms +/- 0.0%
fasta: - 8.0ms +/- 0.0% 8.0ms +/- 0.0%
tagcloud: - 13.0ms +/- 0.0% 13.0ms +/- 0.0%
unpack-code: - 23.0ms +/- 0.0% 23.0ms +/- 0.0%
validate-input: - 6.0ms +/- 0.0% 6.0ms +/- 0.0%
Kraken:
TEST COMPARISON FROM TO DETAILS
=============================================================================
** TOTAL **: - 3782.4ms +/- 0.4% 3766.0ms +/- 0.3%
=============================================================================
ai: - 803.6ms +/- 1.0% 800.3ms +/- 0.5%
astar: - 803.6ms +/- 1.0% 800.3ms +/- 0.5%
audio: - 1049.8ms +/- 0.3% 1049.5ms +/- 0.1%
beat-detection: - 208.1ms +/- 0.1% 207.9ms +/- 0.1%
dft: - 436.4ms +/- 0.5% 435.0ms +/- 0.1%
fft: ?? 137.3ms +/- 0.3% 138.0ms +/- 0.6% not conclusive: might be *1.005x as slow*
oscillator: ?? 268.0ms +/- 0.4% 268.6ms +/- 0.1% not conclusive: might be *1.002x as slow*
imaging: 1.010x as fast 1159.8ms +/- 0.6% 1148.0ms +/- 0.5% significant
gaussian-blur: - 585.7ms +/- 0.3% 585.0ms +/- 0.1%
darkroom: - 341.0ms +/- 2.0% 334.9ms +/- 1.8%
desaturate: 1.022x as fast 233.1ms +/- 0.2% 228.1ms +/- 0.1% significant
json: ?? 170.1ms +/- 0.4% 170.3ms +/- 0.3% not conclusive: might be *1.001x as slow*
parse-financial: *1.014x as slow* 74.0ms +/- 0.5% 75.0ms +/- 0.6% significant
stringify-tinderbox: 1.008x as fast 96.1ms +/- 0.5% 95.3ms +/- 0.4% significant
stanford: - 599.1ms +/- 0.4% 597.9ms +/- 0.3%
crypto-aes: - 127.9ms +/- 0.8% 128.0ms +/- 0.4%
crypto-ccm: ?? 127.9ms +/- 0.3% 128.2ms +/- 0.4% not conclusive: might be *1.002x as slow*
crypto-pbkdf2: - 237.0ms +/- 0.5% 236.2ms +/- 0.8%
crypto-sha256-iterative: 1.008x as fast 106.3ms +/- 0.3% 105.5ms +/- 0.4% significant
V8:
FROM -
Richards: 9613
DeltaBlue: 6407
Crypto: 15087
RayTrace: 8427
EarleyBoyer: 8602
RegExp: 1838
Splay: 6306
----
Score (version 6): 6947
TO -
Richards: 9616
DeltaBlue: 6341
Crypto: 15109
RayTrace: 8312
EarleyBoyer: 8648
RegExp: 1856
Splay: 6275
----
Score (version 6): 6935
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