mv compiler to compiler/

compiler/rustc_codegen_ssa/src/traits/statics.rs

@@ -0,0 +1,24 @@
+use super::BackendTypes;
+use rustc_hir::def_id::DefId;
+use rustc_target::abi::Align;
+
+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;
+    /// ```
+    fn add_used_global(&self, global: Self::Value);
+}
+
+pub trait StaticBuilderMethods: BackendTypes {
+    fn get_static(&mut self, def_id: DefId) -> Self::Value;
+}