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[ADT] Add a DenseMapInfo<T> for shorts. 

Differential Revision: https://reviews.llvm.org/D30857

llvm-svn: 297552
This commit is contained in:
Zachary Turner 2017-03-11 02:52:48 +00:00
parent 5dfa9642a8
commit 6023fb58cc
1 changed files with 18 additions and 0 deletions
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18
llvm/include/llvm/ADT/DenseMapInfo.h
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@ -60,6 +60,16 @@ template<> struct DenseMapInfo<char> {
}
};
// Provide DenseMapInfo for unsigned shorts.
template <> struct DenseMapInfo<unsigned short> {
static inline unsigned short getEmptyKey() { return 0xFFFF; }
static inline unsigned short getTombstoneKey() { return 0xFFFF - 1; }
static unsigned getHashValue(const unsigned short &Val) { return Val * 37U; }
static bool isEqual(const unsigned short &LHS, const unsigned short &RHS) {
return LHS == RHS;
}
};
// Provide DenseMapInfo for unsigned ints.
template<> struct DenseMapInfo<unsigned> {
static inline unsigned getEmptyKey() { return ~0U; }
@ -95,6 +105,14 @@ template<> struct DenseMapInfo<unsigned long long> {
}
};
// Provide DenseMapInfo for shorts.
template <> struct DenseMapInfo<short> {
static inline short getEmptyKey() { return 0x7FFF; }
static inline short getTombstoneKey() { return -0x7FFF - 1; }
static unsigned getHashValue(const short &Val) { return Val * 37U; }
static bool isEqual(const short &LHS, const short &RHS) { return LHS == RHS; }
};
// Provide DenseMapInfo for ints.
template<> struct DenseMapInfo<int> {
static inline int getEmptyKey() { return 0x7fffffff; }