8000 Explore --icf · Issue #1017 · ariel-os/ariel-os · GitHub
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Explore --icf #1017

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chrysn opened this issue May 5, 2025 · 0 comments
Open

Explore --icf #1017

chrysn opened this issue May 5, 2025 · 0 comments
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build system enhancement New feature or request

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@chrysn
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chrysn commented May 5, 2025

Description

We're using the LLD linker, which is said to produce "slightly larger binary artifacts".

Motivation

Small binaries are generally good, and deduplication doesn't hurt, especially because we don't have issues with locality of instructions on most platforms.

Current Implementation

The farthest I got with this is injecting RUSTFLAGS="-Clink-arg=--icf=all" into the build system -- but that resulted in zero sizes being shown by laze build size. It's a bit weird: Values other than the legal all / none / safe do cause errors as expected, but giving any legal value (even the default none, to my surprise) makes things break silently.

Are you planning to do it yourself in a pull request?

Maybe
@chrysn chrysn added enhancement New feature or request build system labels May 5, 2025
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