[issue4258] Use 30-bit digits instead of 15-bit digits for Python integers.

[Mark Dickinson]

Mark Dickinson <dickinsm at gmail.com> added the comment:

Here's a pybench comparison, on OS X 10.5/Core 2 Duo/gcc 4.0.1 (32-bit 
non-debug build of the py3k branch).  I got this by doing:

[create clean build of py3k branch]
dickinsm$ ./python.exe Tools/pybench/pybench.py -f bench_unpatched
[apply 30bit patch and rebuild]
dickinsm$ ./python.exe Tools/pybench/pybench.py -c bench_unpatched

Highlights: SimpleLongArithmetic: around 10% faster.
            SimpleComplexArithmetic: around 16% slower!
            CompareFloatsIntegers: around 20% slower.

I'll investigate the slowdowns.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue4258>
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