luaur-code-gen 0.1.1

Native (A64/X64) code generation for Luau (Rust).
Documentation 
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use crate::macros::codegen_assert::CODEGEN_ASSERT;
use crate::records::assembly_builder_a_64::AssemblyBuilderA64;
use crate::records::register_a_64::RegisterA64;

pub fn emit_add_offset(
    build: &mut AssemblyBuilderA64,
    dst: RegisterA64,
    src: RegisterA64,
    offset: usize,
) {
    CODEGEN_ASSERT!(dst != src);
    CODEGEN_ASSERT!(offset <= i32::MAX as usize);

    const K_MAX_IMMEDIATE: u16 = 4095;

    if offset as u16 <= K_MAX_IMMEDIATE {
        build.add_register_a_64_register_a_64_u16(dst, src, offset as u16);
    } else {
        build.mov_register_a_64_i32(dst, offset as i32);
        build.add_register_a_64_register_a_64_register_a_64_i32(dst, dst, src, 0);
    }
}