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Description
All offsets, for jumps, in the bytecode are by bytes, not by instructions. Effectively this limits the range of jumps not needing EXTENDED_ARG
to 128 instructions. Using instruction offsets would increase the range to 256.
Analysis of jumps in standard library by operand:
The part of the standard library has been compiled after running the tests:
<256 131814 88.1%
256-511 12269 8.2%
512+ 5602 3.7%
Total 149685
Just top level modules:
<256 41077 83.2%
256-511 5308 10.7%
512+ 2995 6.1%
Total 49380
So it would appear that roughly 8-10% of branches would benefit from instruction, rather than byte, offsets.
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