Method rewrite_branch_destination

cranelift/codegen/src/ir/function.rs:297–305

Rewrite the branch destination to `new_dest` if the destination matches `old_dest`. Does nothing if called with a non-jump or non-branch instruction.

(&mut self, inst: Inst, old_dest: Block, new_dest: Block)

    /// Rewrite the branch destination to `new_dest` if the destination matches `old_dest`.
    /// Does nothing if called with a non-jump or non-branch instruction.
    pub fn rewrite_branch_destination(&mut self, inst: Inst, old_dest: Block, new_dest: Block) {
        for dest in self.dfg.insts[inst]
            .branch_destination_mut(&mut self.dfg.jump_tables, &mut self.dfg.exception_tables)
        {
            if dest.block(&self.dfg.value_lists) == old_dest {
                dest.set_block(new_dest, &mut self.dfg.value_lists)
            }
        }
    }

    /// Checks that the specified block can be encoded as a basic block.
    ///