[issue6713] Integer & Long types: Performance improvement of 1.6x to 2x for base 10 conversions

[Collin Winter]

Collin Winter <collinw at gmail.com> added the comment:

I ran this patch against Unladen Swallow's slowspitfire template 
benchmark, which does more int->string conversions than any of our other 
benchmarks. When run against Python trunk r74737, I get these results:

slowspitfire:
Min: 0.888772 -> 0.867427: 2.46% faster
Avg: 0.891857 -> 0.872461: 2.22% faster
Significant (t=45.532127, a=0.95)

(./perf.py -r -b slowspitfire ../a/python.exe ../b/python.exe)
This was an idle MacBook Pro, OS X 10.5.8, Apple gcc 4.0.1, 2.4 GHz Core 
Duo.

Other benchmarks benefit, but are only barely statistically significant.

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