#include <willow/IR/Constant.h>
#include <willow/IR/Value.h>

#include <cassert>

namespace willow {

void Value::addUse(Instruction *instruction) {
  auto [it, inserted] = uses.try_emplace(instruction, 1);

  if (!inserted)
    it->second += 1;
}

void Value::delUse(Instruction *instruction) {
  assert(uses.contains(instruction) && "No uses to remove");
  auto it = uses.find(instruction);
  it->second -= 1;
  if (it->second == 0)
    uses.erase(it);
}

} // namespace willow