Method at_first_inst

cranelift/codegen/src/cursor.rs:130–136

Rebuild this cursor positioned at the first instruction in `block`. This is intended to be used as a builder method: ``` # use cranelift_codegen::ir::{Function, Block, Inst}; # use cranelift_codegen::cursor::{Cursor, FuncCursor}; fn edit_func(func: &mut Function, block: Block) { let mut pos = FuncCursor::new(func).at_first_inst(block); // Use `pos`... } ```

(mut self, block: ir::Block)

    /// }
    /// ```
    fn at_first_inst(mut self, block: ir::Block) -> Self
    where
        Self: Sized,
    {
        self.goto_first_inst(block);
        self
    }

    /// Rebuild this cursor positioned at the last instruction in `block`.
    ///