+/// CheckChildSameMatcher - This checks to see if child node is exactly the same
+/// node as the specified match that was recorded with 'Record'. This is used
+/// when patterns have the same name in them, like '(mul GPR:$in, GPR:$in)'.
+class CheckChildSameMatcher : public Matcher {
+ unsigned ChildNo;
+ unsigned MatchNumber;
+public:
+ CheckChildSameMatcher(unsigned childno, unsigned matchnumber)
+ : Matcher(CheckChildSame), ChildNo(childno), MatchNumber(matchnumber) {}
+
+ unsigned getChildNo() const { return ChildNo; }
+ unsigned getMatchNumber() const { return MatchNumber; }
+
+ static inline bool classof(const Matcher *N) {
+ return N->getKind() == CheckChildSame;
+ }
+
+ virtual bool isSafeToReorderWithPatternPredicate() const { return true; }
+
+private:
+ virtual void printImpl(raw_ostream &OS, unsigned indent) const;
+ virtual bool isEqualImpl(const Matcher *M) const {
+ return cast<CheckChildSameMatcher>(M)->ChildNo == ChildNo &&
+ cast<CheckChildSameMatcher>(M)->MatchNumber == MatchNumber;
+ }
+ virtual unsigned getHashImpl() const { return (MatchNumber << 2) | ChildNo; }
+};
+