diff options
Diffstat (limited to 'compiler/rustc_session/src')
| -rw-r--r-- | compiler/rustc_session/src/config.rs | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/compiler/rustc_session/src/config.rs b/compiler/rustc_session/src/config.rs index b6b349e4a80..b683626bbd6 100644 --- a/compiler/rustc_session/src/config.rs +++ b/compiler/rustc_session/src/config.rs @@ -75,19 +75,21 @@ impl_stable_hash_via_hash!(OptLevel); /// This is what the `LtoCli` values get mapped to after resolving defaults and /// and taking other command line options into account. +/// +/// Note that linker plugin-based LTO is a different mechanism entirely. #[derive(Clone, PartialEq)] pub enum Lto { - /// Don't do any LTO whatsoever + /// Don't do any LTO whatsoever. No, - /// Do a full crate graph LTO with ThinLTO + /// Do a full-crate-graph (inter-crate) LTO with ThinLTO. Thin, - /// Do a local graph LTO with ThinLTO (only relevant for multiple codegen - /// units). + /// Do a local ThinLTO (intra-crate, over the CodeGen Units of the local crate only). This is + /// only relevant if multiple CGUs are used. ThinLocal, - /// Do a full crate graph LTO with "fat" LTO + /// Do a full-crate-graph (inter-crate) LTO with "fat" LTO. Fat, } |