// We build up the list of spills for every case where a use is separated
// from the definition by a suspend point.
-struct Spill : std::pair<Value *, Instruction *> {
- using base = std::pair<Value *, Instruction *>;
-
- Spill(Value *Def, User *U) : base(Def, cast<Instruction>(U)) {}
-
- Value *def() const { return first; }
- Instruction *user() const { return second; }
- BasicBlock *userBlock() const { return second->getParent(); }
+namespace {
+class Spill {
+ Value *Def;
+ Instruction *User;
- std::pair<Value *, BasicBlock *> getKey() const {
- return {def(), userBlock()};
- }
+public:
+ Spill(Value *Def, llvm::User *U) : Def(Def), User(cast<Instruction>(U)) {}
- bool operator<(Spill const &rhs) const { return getKey() < rhs.getKey(); }
+ Value *def() const { return Def; }
+ Instruction *user() const { return User; }
+ BasicBlock *userBlock() const { return User->getParent(); }
};
+} // namespace
// Note that there may be more than one record with the same value of Def in
// the SpillInfo vector.