Method remove_block

cranelift/codegen/src/ir/layout.rs:301–324

Remove `block` from the layout.

(&mut self, block: Block)

    /// Remove `block` from the layout.
    pub fn remove_block(&mut self, block: Block) {
        debug_assert!(self.is_block_inserted(block), "block not in the layout");
        debug_assert!(self.first_inst(block).is_none(), "block must be empty.");

        // Clear the `block` node and extract links.
        let prev;
        let next;
        {
            let n = &mut self.blocks[block];
            prev = n.prev;
            next = n.next;
            n.prev = None.into();
            n.next = None.into();
        }
        // Fix up links to `block`.
        match prev.expand() {
            None => self.first_block = next.expand(),
            Some(p) => self.blocks[p].next = next,
        }
        match next.expand() {
            None => self.last_block = prev.expand(),
            Some(n) => self.blocks[n].prev = prev,
        }
    }

    /// Return an iterator over all blocks in layout order.
    pub fn blocks(&self) -> Blocks<'_> {