[ADT] Remove CachedHash<T>.

Nobody is using it.

Differential Revision: https://reviews.llvm.org/D25630

llvm-svn: 284503

1 files changed, 0 insertions, 49 deletions

diff --git a/llvm/unittests/ADT/DenseMapTest.cpp b/llvm/unittests/ADT/DenseMapTest.cpp
index cbf1a44fa60..80f0462bc8f 100644
--- a/llvm/unittests/ADT/DenseMapTest.cpp
+++ b/llvm/unittests/ADT/DenseMapTest.cpp
@@ -496,55 +496,6 @@ TEST(DenseMapCustomTest, StringRefTest) {
   EXPECT_EQ(42, M.lookup(StringRef("a", 0)));
 }
 
-struct CachedHashTest {
-  unsigned Val;
-  unsigned *Counter = nullptr;
-  CachedHashTest(unsigned Val) : Val(Val) {}
-  CachedHashTest(unsigned Val, unsigned *Counter)
-      : Val(Val), Counter(Counter) {}
-};
-}
-namespace llvm {
-template <> struct DenseMapInfo<CachedHashTest> {
-  static CachedHashTest getEmptyKey() { return ~0; }
-  static CachedHashTest getTombstoneKey() { return ~0U - 1; }
-  static unsigned getHashValue(const CachedHashTest &X) {
-    ++*X.Counter;
-    return X.Val;
-  }
-  static bool isEqual(const CachedHashTest &LHS, const CachedHashTest &RHS) {
-    return LHS.Val == RHS.Val;
-  }
-};
-}
-namespace {
-
-TEST(DenseMapCustomTest, CachedHashTest) {
-  unsigned Counter = 0;
-  CachedHashTest Val(0, &Counter);
-  DenseMap<CachedHashTest, int> Map;
-
-  Map[Val] = 0;
-  ASSERT_EQ(1u, Counter);
-
-  Map.reserve(64);
-  ASSERT_EQ(2u, Counter);
-}
-
-// Like above, but now cache the hash.
-TEST(DenseMapCustomTest, CachedHashTest2) {
-  unsigned Counter = 0;
-  CachedHashTest Val(0, &Counter);
-  typedef CachedHash<CachedHashTest> Cached;
-  DenseMap<Cached, int> Map;
-
-  Map[Val] = 0;
-  ASSERT_EQ(1u, Counter);
-
-  Map.reserve(64);
-  ASSERT_EQ(1u, Counter);
-}
-
 // Key traits that allows lookup with either an unsigned or char* key;
 // In the latter case, "a" == 0, "b" == 1 and so on.
 struct TestDenseMapInfo {