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This is a sorted interval map data structure for small keys and values with automatic coalescing and bidirectional iteration over coalesced intervals. Except for coalescing intervals, it provides similar functionality to std::map. It is however much more compact for small keys and values, and hopefully faster too. The container object itself can hold the first few intervals without any allocations, then it switches to a cache conscious B+-tree representation. A recycling allocator can be shared between many containers, even between containers holding different types. The IntervalMap is initially intended to be used with SlotIndex intervals for: - Backing store for LiveIntervalUnion that is smaller and faster than std::set. - Backing store for LiveInterval with less overhead than std::vector for typical intervals and O(N log N) merging of large intervals. 99% of virtual registers need 4 entries or less and would benefit from the small object optimization. - Backing store for LiveDebugVariable which doesn't exist yet, but will track debug variables during register allocation. This is a work in progress. Missing items are: - Performance metrics. - erase(). - insert() shrinkage. - clear(). - More performance metrics. - Simplification and detemplatization. llvm-svn: 119772 |
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.. | ||
APFloatTest.cpp | ||
APIntTest.cpp | ||
BitVectorTest.cpp | ||
DAGDeltaAlgorithmTest.cpp | ||
DeltaAlgorithmTest.cpp | ||
DenseMapTest.cpp | ||
DenseSetTest.cpp | ||
ilistTest.cpp | ||
ImmutableSetTest.cpp | ||
IntervalMapTest.cpp | ||
Makefile | ||
SmallBitVectorTest.cpp | ||
SmallStringTest.cpp | ||
SmallVectorTest.cpp | ||
SparseBitVectorTest.cpp | ||
StringMapTest.cpp | ||
StringRefTest.cpp | ||
TripleTest.cpp | ||
TwineTest.cpp |