Change default optimizations pass to focus on code size (!305) · Merge requests · Sergej Kostjucenko / cargo-contract

Sergej Kostjucenko requested to merge hc-bump-size-opt into master Jul 19, 2021

Created by: HCastano

This PR changes the default optimization option passed to wasm-opt from -O3 to ~~-Os~~-Oz. This saves us around 0.2-0.3K according to these rough benchmarks.

The default wasn't set to -Oz as I saw no noticeable size improvements, and it just takes more time to run. However, you could also argue that since contracts are in general quite small the extra time for -Oz is negligible so we should enable it anyways.

~~While I could be convinced of this, I'm not sure what hardware other people build on, and the negative impact the change to -Oz could have for them.~~

Change default optimizations pass to focus on code size

Merge request reports