#include "llvm/ADT/HashExtras.h"
+#ifdef _MSC_VER
+
+// GCC and VC++ have differing ways of implementing hash_maps. As it's not
+// standardized, that's to be expected. This adapter class allows VC++
+// hash_map to use GCC's hash classes.
+namespace stdext {
+ template<class Key> struct hash {
+ inline size_t operator()(const Key &) const {
+ return 0;
+ }
+ };
+
+ template<class Key> class hash_compare<Key, std::less<Key> > {
+ std::less<Key> comp;
+ public:
+ enum { bucket_size = 4 };
+ enum { min_buckets = 8 };
+ hash_compare() {}
+ hash_compare(std::less<Key> pred) : comp(pred) {}
+ size_t operator()(const Key& key) const { return hash<Key>()(key); }
+ bool operator()(const Key& k1, const Key& k2) const { return comp(k1, k2); }
+ };
+}
+
+#endif
+
#endif