diff options
Diffstat (limited to 'compiler/rustc_codegen_ssa/src/traits/statics.rs')
| -rw-r--r-- | compiler/rustc_codegen_ssa/src/traits/statics.rs | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/compiler/rustc_codegen_ssa/src/traits/statics.rs b/compiler/rustc_codegen_ssa/src/traits/statics.rs index 817fc02d166..a2a3cb56c78 100644 --- a/compiler/rustc_codegen_ssa/src/traits/statics.rs +++ b/compiler/rustc_codegen_ssa/src/traits/statics.rs @@ -6,17 +6,15 @@ pub trait StaticMethods: BackendTypes { fn static_addr_of(&self, cv: Self::Value, align: Align, kind: Option<&str>) -> Self::Value; fn codegen_static(&self, def_id: DefId, is_mutable: bool); - /// Mark the given global value as "used", to prevent a backend from potentially removing a - /// static variable that may otherwise appear unused. - /// - /// Static variables in Rust can be annotated with the `#[used]` attribute to direct the `rustc` - /// compiler to mark the variable as a "used global". - /// - /// ```no_run - /// #[used] - /// static FOO: u32 = 0; - /// ``` + /// Mark the given global value as "used", to prevent the compiler and linker from potentially + /// removing a static variable that may otherwise appear unused. fn add_used_global(&self, global: Self::Value); + + /// Same as add_used_global(), but only prevent the compiler from potentially removing an + /// otherwise unused symbol. The linker is still permitted to drop it. + /// + /// This corresponds to the semantics of the `#[used]` attribute. + fn add_compiler_used_global(&self, global: Self::Value); } pub trait StaticBuilderMethods: BackendTypes { |