Use HashSet<std::string> instead of unordered_set<>.

Change the default parameters for HashSet<std::string> to
allow passing StringPiece as a key, avoiding an unnecessary
allocation. Use the HashSet<std::string> instead of
std::unordered_set<std::string>. Rename HashSet<> functions
that mirror std::unordered_multiset<> to lower-case.

Fix CompilerDriver::LoadImageClasses() to avoid using
invalidated iterator.

Test: m test-art-host-gtest
Test: testrunner.py --host
Change-Id: I7f8b82ee0b07befc5a0ee1c420b08a2068ad931e

1 files changed, 0 insertions, 14 deletions

diff --git a/libartbase/base/utils.h b/libartbase/base/utils.h
index 73c1c226f9..6e3b78e12c 100644
--- a/libartbase/base/utils.h
+++ b/libartbase/base/utils.h
@@ -244,20 +244,6 @@ static inline void CheckedCall(const Func& function, const char* what, Args... a
   }
 }
 
-// Hash bytes using a relatively fast hash.
-static inline size_t HashBytes(const uint8_t* data, size_t len) {
-  size_t hash = 0x811c9dc5;
-  for (uint32_t i = 0; i < len; ++i) {
-    hash = (hash * 16777619) ^ data[i];
-  }
-  hash += hash << 13;
-  hash ^= hash >> 7;
-  hash += hash << 3;
-  hash ^= hash >> 17;
-  hash += hash << 5;
-  return hash;
-}
-
 }  // namespace art
 
 #endif  // ART_LIBARTBASE_BASE_UTILS_H_