LlvmTools is used at run time in 2 crates. It's used at build time in 12 crates (of which 2 optionally, 5 directly). It's used only as a dev dependency in 2 crates.

Depender (with downloads and own rev deps) LlvmTools version
19K 19 bootloader build ^0.1.1
3.4K bootimage ^0.1.1
410 1 rftrace build ^0.1
cargo-image ^0.1.1
springboard build ^0.1.1
hermit-kernel build ^0.1
210 3 nrfxlib-sys optional build ^0.1.1