Trait rustc_codegen_ssa::traits::DeclareMethods

pub trait DeclareMethods<'tcx>: BackendTypes {
    fn declare_global(&self, name: &str, ty: Self::Type) -> Self::Value;
    fn declare_cfn(&self, name: &str, fn_type: Self::Type) -> Self::Function;
    fn declare_fn(
        &self, 
        name: &str, 
        fn_abi: &FnAbi<'tcx, Ty<'tcx>>
    ) -> Self::Function;
    fn define_global(&self, name: &str, ty: Self::Type) -> Option<Self::Value>;
    fn define_private_global(&self, ty: Self::Type) -> Self::Value;
    fn get_declared_value(&self, name: &str) -> Option<Self::Value>;
    fn get_defined_value(&self, name: &str) -> Option<Self::Value>;
}

Required methods

fn declare_global(&self, name: &str, ty: Self::Type) -> Self::Value

Declare a global value.

If there’s a value with the same name already declared, the function will return its Value instead.

fn declare_cfn(&self, name: &str, fn_type: Self::Type) -> Self::Function

Declare a C ABI function.

Only use this for foreign function ABIs and glue. For Rust functions use declare_fn instead.

If there’s a value with the same name already declared, the function will update the declaration and return existing Value instead.

fn declare_fn(
    &self,
    name: &str,
    fn_abi: &FnAbi<'tcx, Ty<'tcx>>
) -> Self::Function

Declare a Rust function.

If there’s a value with the same name already declared, the function will update the declaration and return existing Value instead.

fn define_global(&self, name: &str, ty: Self::Type) -> Option<Self::Value>

Declare a global with an intention to define it.

Use this function when you intend to define a global. This function will return None if the name already has a definition associated with it. In that case an error should be reported to the user, because it usually happens due to user’s fault (e.g., misuse of #[no_mangle] or #[export_name] attributes).

fn define_private_global(&self, ty: Self::Type) -> Self::Value

Declare a private global

Use this function when you intend to define a global without a name.

fn get_declared_value(&self, name: &str) -> Option<Self::Value>

Gets declared value by name.

fn get_defined_value(&self, name: &str) -> Option<Self::Value>

Gets defined or externally defined (AvailableExternally linkage) value by name.

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Implementors

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