luaur-code-gen 0.1.0

Native (A64/X64) code generation for Luau (Rust).
Documentation 
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use crate::functions::has_side_effects::has_side_effects;
use crate::records::const_prop_state::ConstPropState;
use crate::records::ir_inst::IrInst;

impl ConstPropState {
    pub fn get_previous_inst_index(&mut self, inst: &IrInst) -> Option<*mut u32> {
        let prev_idx = match self.value_map.find_mut(inst) {
            Some(prev_idx) => prev_idx as *mut u32,
            None => return None,
        };

        let prev_inst = unsafe {
            let function = &*self.function;
            &function.instructions[*prev_idx as usize]
        };
        if prev_inst.use_count != 0 || has_side_effects(prev_inst.cmd) {
            Some(prev_idx)
        } else {
            None
        }
    }
}