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LAST BUILD ON BRANCH btcutil-psbt-update-dec-2023

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Build # 7268575324

Build Type

Pull #2075

github

Committed by Roasbeef

Commit Message

txscript: use a single shared scratch buffer in segwit sighash calc

We used to use a lot of small buffers for serialization, but now we'll
use one buffer large enough, and slice into it when needed.

``
name                  old time/op    new time/op    delta
CalcWitnessSigHash-8    31.5µs ± 0%    29.2µs ± 0%   -7.05%  (p=0.000 n=10+10)

name                  old alloc/op   new alloc/op   delta
CalcWitnessSigHash-8    19.9kB ± 0%    18.5kB ± 0%   -7.14%  (p=0.000 n=10+10)

name                  old allocs/op  new allocs/op  delta
CalcWitnessSigHash-8       801 ± 0%       445 ± 0%  -44.44%  (p=0.000 n=10+10)
```

Pull Request Pull Request #2075: multi: update main package and btcutil to chainhash/v1.1.0, use optimized dsha256

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