[PATCH] D120213: [CodeGen] Forward declare classes & remove includes

[Clemens Wasser via Phabricator via llvm-commits]

clemenswasser created this revision.
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`llvm/CodeGen/Machine*.h`, `llvm/ADT/ArrayRef.h`, `llvm/IR/Instructions.h` and `llvm/CodeGen/SelectionDAG.h` were identified as being quiet heavy by clang build analyzer.
Removing includes and forward declaring the relevant classes saves compilation time.


https://reviews.llvm.org/D120213

Files:
  llvm/include/llvm/CodeGen/FastISel.h
  llvm/include/llvm/CodeGen/LivePhysRegs.h
  llvm/include/llvm/CodeGen/MachineFunction.h
  llvm/include/llvm/CodeGen/MachineModuleInfo.h
  llvm/include/llvm/CodeGen/ScheduleDAG.h
  llvm/include/llvm/CodeGen/StackProtector.h
  llvm/include/llvm/CodeGen/TargetLowering.h
  llvm/include/llvm/CodeGen/WasmEHFuncInfo.h
  llvm/lib/CodeGen/CFGuardLongjmp.cpp
  llvm/lib/CodeGen/CFIInstrInserter.cpp
  llvm/lib/CodeGen/CMakeLists.txt
  llvm/lib/CodeGen/EHContGuardCatchret.cpp
  llvm/lib/CodeGen/InterleavedAccessPass.cpp
  llvm/lib/CodeGen/MachineFunctionPrinterPass.cpp
  llvm/lib/CodeGen/MacroFusion.cpp
  llvm/lib/CodeGen/PatchableFunction.cpp
  llvm/lib/CodeGen/RegUsageInfoPropagate.cpp
  llvm/lib/CodeGen/ResetMachineFunctionPass.cpp
  llvm/lib/CodeGen/ScheduleDAG.cpp
  llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
  llvm/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
  llvm/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
  llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
  llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
  llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
  llvm/lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp
  llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
  llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
  llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
  llvm/lib/CodeGen/SelectionDAG/StatepointLowering.cpp
  llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
  llvm/lib/CodeGen/SwitchLoweringUtils.cpp
  llvm/lib/CodeGen/TargetLoweringBase.cpp
  llvm/lib/Target/AMDGPU/AMDGPUGlobalISelUtils.h
  llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp
  llvm/lib/Target/AMDGPU/AMDGPUISelLowering.h
  llvm/lib/Target/AMDGPU/AMDGPUPerfHintAnalysis.cpp
  llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
  llvm/lib/Target/ARM/ARMLowOverheadLoops.cpp
  llvm/lib/Target/ARM/MVELaneInterleavingPass.cpp
  llvm/lib/Target/Hexagon/HexagonConstExtenders.cpp
  llvm/lib/Target/Hexagon/HexagonISelLowering.cpp
  llvm/lib/Target/Hexagon/HexagonISelLowering.h
  llvm/lib/Target/Hexagon/HexagonISelLoweringHVX.cpp
  llvm/lib/Target/NVPTX/NVPTXUtilities.h
  llvm/lib/Target/VE/VEISelLowering.h
  llvm/lib/Target/WebAssembly/WebAssemblySelectionDAGInfo.cpp
  llvm/lib/Target/X86/X86ISelLowering.cpp
  llvm/lib/Target/X86/X86InstrInfo.cpp

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