/usr/lib/llvm-3.0/include/llvm/CodeGen/ is in llvm-3.0-dev 3.0-4ubuntu1.
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..
/usr/lib/llvm-3.0/include/llvm/CodeGen/Analysis.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/AsmPrinter.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/BinaryObject.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/CalcSpillWeights.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/CallingConvLower.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/EdgeBundles.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/FastISel.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/FunctionLoweringInfo.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/GCMetadata.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/GCMetadataPrinter.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/GCStrategy.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/GCs.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/ISDOpcodes.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/IntrinsicLowering.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/JITCodeEmitter.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/LatencyPriorityQueue.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/LexicalScopes.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/LinkAllAsmWriterComponents.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/LinkAllCodegenComponents.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/LiveInterval.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/LiveIntervalAnalysis.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/LiveStackAnalysis.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/LiveVariables.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachORelocation.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachineBasicBlock.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachineBlockFrequencyInfo.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachineBranchProbabilityInfo.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachineCodeEmitter.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachineCodeInfo.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachineConstantPool.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachineDominators.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachineFrameInfo.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachineFunction.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachineFunctionAnalysis.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachineFunctionPass.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachineInstr.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachineInstrBuilder.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachineJumpTableInfo.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachineLoopInfo.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachineLoopRanges.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachineMemOperand.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachineModuleInfo.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachineModuleInfoImpls.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachineOperand.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachinePassRegistry.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachineRegisterInfo.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachineRelocation.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/MachineSSAUpdater.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/ObjectCodeEmitter.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/PBQP/
/usr/lib/llvm-3.0/include/llvm/CodeGen/PBQP/Graph.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/PBQP/HeuristicBase.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/PBQP/HeuristicSolver.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/PBQP/Heuristics/
/usr/lib/llvm-3.0/include/llvm/CodeGen/PBQP/Heuristics/Briggs.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/PBQP/Math.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/PBQP/Solution.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/Passes.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/ProcessImplicitDefs.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/PseudoSourceValue.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/RegAllocPBQP.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/RegAllocRegistry.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/RegisterScavenging.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/RuntimeLibcalls.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/ScheduleDAG.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/ScheduleHazardRecognizer.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/SchedulerRegistry.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/ScoreboardHazardRecognizer.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/SelectionDAG.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/SelectionDAGISel.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/SelectionDAGNodes.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/SlotIndexes.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/TargetLoweringObjectFileImpl.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/ValueTypes.h
/usr/lib/llvm-3.0/include/llvm/CodeGen/ValueTypes.td