# Macro std::intrinsics::mir::mir

source ·

    pub macro mir(
            $(type RET = $ret_ty:ty ;)?
            $(let $local_decl:ident $(: $local_decl_ty:ty)? ;)*
            $(debug $dbg_name:ident => $dbg_data:expr ;)*

            {
                $($entry:tt)*
            }

            $(
                $block_name:ident = {
                    $($block:tt)*
                }
            )*
        ) {
        ...
    }

🔬This is a nightly-only experimental API. (`custom_mir`)
Expand description

Macro for generating custom MIR.

See the module documentation for syntax details. This macro is not magic - it only transforms your MIR into something that is easier to parse in the compiler.