On Sat, 22 Oct 2011, Zach Pfeffer wrote:
After an epic battle the tips of each Android build are ready to be released.
skia: Add -ffast-math, -flto
http://review.android.git.linaro.org/#change,773
Good to see that ffast-math is making a difference at O3 but how does
this affect your benchmarking activity ? Do we know why this difference
occurs ? Is this because of extra vectorization for Floating point in skia
or some other reason ?
Also, I'm sure you've considered this but I thought it better to check.
Given that the benchmarking pages plot skia results -
https://wiki.linaro.org/Platform/Android/AndroidToolchainBenchmarking/2011-09#skia_results
a double check that this doesn't result in there being a spike in the
results for 2011.10 would be good. If not, historical data needs to be
measured for this change given that the said options weren't used
while measuring the historical data.
Cheers,
Ramana
---
Ramana Radhakrishnan
Toolchain Working Group
Linaro
http://www.linaro.org
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