luaur-code-gen 0.1.3

Native (A64/X64) code generation for Luau (Rust).
Documentation 
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use crate::records::remove_dead_store_state::RemoveDeadStoreState;
use crate::records::store_reg_info::StoreRegInfo;

impl RemoveDeadStoreState {
    // When a register value is being defined, it kills previous stores
    pub fn def_reg(&mut self, reg: u8) {
        // Stores to captured registers are not removed since we don't track their uses outside of function
        let function = unsafe { &*self.function };
        if (function.cfg.captured.regs[reg as usize / 64] & (1u64 << (reg as usize % 64))) != 0 {
            return;
        }

        let reg_info: &mut StoreRegInfo =
            unsafe { &mut *(&mut self.info[reg as usize] as *mut StoreRegInfo) };

        self.kill_tag_and_value_store_pair(reg_info);
        self.kill_t_value_store(reg_info);

        reg_info.tag_inst_idx = !0u32;
        reg_info.value_inst_idx = !0u32;
        reg_info.tvalue_inst_idx = !0u32;

        // Opaque register definition removes the knowledge of the actual tag value
        reg_info.known_tag = 0xff;

        // New value defined, before MARK_DEAD is used again, it might be used in a VM exit
        reg_info.ignore_at_exit = false;
    }
}