luaur-code-gen 0.1.3

use crate::macros::codegen_assert::CODEGEN_ASSERT;
use crate::records::ir_function::IrFunction;
use crate::records::ir_inst::IrInst;
use crate::records::ir_reg_alloc_a_64::IrRegAllocA64;
use crate::records::spill::Spill;

impl IrRegAllocA64 {
    pub fn restore_reg(&mut self, inst: &mut IrInst) {
        let index = unsafe { &*self.function }.get_inst_index(inst);

        let mut i = 0;
        while i < self.spills.len() {
            if self.spills[i].inst == index {
                let s = self.spills[i]; // copy in case allocReg reallocates spills
                let reg = self.alloc_reg(s.origin.kind(), index);

                self.restore_ir_reg_alloc_a_64_spill_register_a_64(&s, reg);

                self.spills[i] = self.spills[self.spills.len() - 1];
                self.spills.pop();
                return;
            }
            i += 1;
        }

        CODEGEN_ASSERT!(false, "Expected to find a spill record");
    }
}