luaur-code-gen 0.1.3

Native (A64/X64) code generation for Luau (Rust).
Documentation 
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use crate::enums::ir_cmd::IrCmd;
use crate::functions::add_use::add_use;
use crate::functions::get_op_ir_data::get_op_mut;
use crate::functions::is_block_terminator::is_block_terminator;
use crate::functions::remove_use::remove_use;
use crate::macros::codegen_assert::CODEGEN_ASSERT;
use crate::records::ir_function::IrFunction;
use crate::records::ir_inst::IrInst;
use crate::records::ir_op::IrOp;

pub fn substitute(function: &mut IrFunction, inst: &mut IrInst, replacement: IrOp) {
    CODEGEN_ASSERT!(!is_block_terminator(inst.cmd));

    inst.cmd = IrCmd::SUBSTITUTE;

    add_use(function, replacement);

    let n = inst.ops.size();
    for i in 0..n {
        let op: IrOp = inst.ops.as_slice()[i as usize];
        remove_use(function, op);
    }

    inst.ops.resize(1);
    *get_op_mut(inst, 0) = replacement;
}