luaur-code-gen 0.1.0

Native (A64/X64) code generation for Luau (Rust).
Documentation 
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use crate::enums::kind_a_64::KindA64;

pub fn free_spill(free: &mut u64, kind: KindA64, slot: u8) {
    // qN registers use two consecutive slots
    let mask = ((if kind == KindA64::q { 3u64 } else { 1u64 }) << (slot as u64)) as u64;

    // Equivalent to CODEGEN_ASSERT!((free & mask) == 0) without relying on the CODEGEN_ASSERT macro.
    assert!((*free & mask) == 0);

    *free |= mask;
}