Method mutate

cranelift/src/bugpoint.rs:127–139

(&mut self, mut func: Function)

    }

    fn mutate(&mut self, mut func: Function) -> Option<(Function, String, ProgressStatus)> {
        next_inst_ret_prev(&func, &mut self.block, &mut self.inst).map(|(prev_block, prev_inst)| {
            func.layout.remove_inst(prev_inst);
            let msg = if func.layout.block_insts(prev_block).next().is_none() {
                // Make sure empty blocks are removed, as `next_inst_ret_prev` depends on non empty blocks
                func.layout.remove_block(prev_block);
                format!("Remove inst {prev_inst} and empty block {prev_block}")
            } else {
                format!("Remove inst {prev_inst}")
            };
            (func, msg, ProgressStatus::ExpandedOrShrinked)
        })
    }
}

/// Try to replace instructions with `iconst` or `fconst`.