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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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119772 91177308-0d34-0410-b5e6-96231b3b80d8 |
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.. | ||
ADT | ||
Analysis | ||
Assembly | ||
Bitcode | ||
CodeGen | ||
CompilerDriver | ||
Config | ||
ExecutionEngine | ||
MC | ||
Object | ||
Support | ||
System | ||
Target | ||
Transforms | ||
AbstractTypeUser.h | ||
Argument.h | ||
Attributes.h | ||
AutoUpgrade.h | ||
BasicBlock.h | ||
CallGraphSCCPass.h | ||
CallingConv.h | ||
CMakeLists.txt | ||
Constant.h | ||
Constants.h | ||
DerivedTypes.h | ||
Function.h | ||
GlobalAlias.h | ||
GlobalValue.h | ||
GlobalVariable.h | ||
GVMaterializer.h | ||
InitializePasses.h | ||
InlineAsm.h | ||
InstrTypes.h | ||
Instruction.def | ||
Instruction.h | ||
Instructions.h | ||
IntrinsicInst.h | ||
Intrinsics.h | ||
Intrinsics.td | ||
IntrinsicsAlpha.td | ||
IntrinsicsARM.td | ||
IntrinsicsCellSPU.td | ||
IntrinsicsPowerPC.td | ||
IntrinsicsX86.td | ||
IntrinsicsXCore.td | ||
LinkAllPasses.h | ||
LinkAllVMCore.h | ||
Linker.h | ||
LLVMContext.h | ||
Metadata.h | ||
Module.h | ||
OperandTraits.h | ||
Operator.h | ||
Pass.h | ||
PassAnalysisSupport.h | ||
PassManager.h | ||
PassManagers.h | ||
PassRegistry.h | ||
PassSupport.h | ||
SymbolTableListTraits.h | ||
Type.h | ||
TypeSymbolTable.h | ||
Use.h | ||
User.h | ||
Value.h | ||
ValueSymbolTable.h |