[mypyc] specialise bytearray(bytes()[i:j]) - #21901
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Fixes mypyc/mypyc#1216 Local compiled benchmarks showed approximately 1.8–2× speedup for 1 KiB and 1 MiB slices. Authored-by: Codex
JukkaL
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Thanks! It would be easy to extend this to also support bytearray(b[:n]) and bytearray(b[n:]), which may be fairly common (optional).
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Fixes mypyc/mypyc#1216
Local compiled benchmarks showed approximately 1.8 to 2.1x speedup for 1 KiB and 1 MiB slices.
Authored-by: Codex