lib/Target/XCore/XCoreMachineFunctionInfo.h

   1 //===- XCoreMachineFunctionInfo.h - XCore machine function info -*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // This file declares XCore-specific per-machine-function information.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #ifndef LLVM_LIB_TARGET_XCORE_XCOREMACHINEFUNCTIONINFO_H
  14 #define LLVM_LIB_TARGET_XCORE_XCOREMACHINEFUNCTIONINFO_H
  15
  16 #include "llvm/CodeGen/MachineBasicBlock.h"
  17 #include "llvm/CodeGen/MachineFrameInfo.h"
  18 #include "llvm/CodeGen/MachineFunction.h"
  19 #include <cassert>
  20 #include <utility>
  21 #include <vector>
  22
  23 namespace llvm {
  24
  25 /// XCoreFunctionInfo - This class is derived from MachineFunction private
  26 /// XCore target-specific information for each MachineFunction.
  27 class XCoreFunctionInfo : public MachineFunctionInfo {
  28   bool LRSpillSlotSet = false;
  29   int LRSpillSlot;
  30   bool FPSpillSlotSet = false;
  31   int FPSpillSlot;
  32   bool EHSpillSlotSet = false;
  33   int EHSpillSlot[2];
  34   unsigned ReturnStackOffset;
  35   bool ReturnStackOffsetSet = false;
  36   int VarArgsFrameIndex = 0;
  37   mutable int CachedEStackSize = -1;
  38   std::vector<std::pair<MachineBasicBlock::iterator, CalleeSavedInfo>>
  39   SpillLabels;
  40
  41   virtual void anchor();
  42
  43 public:
  44   XCoreFunctionInfo() = default;
  45
  46   explicit XCoreFunctionInfo(MachineFunction &MF) {}
  47
  48   ~XCoreFunctionInfo() override = default;
  49
  50   void setVarArgsFrameIndex(int off) { VarArgsFrameIndex = off; }
  51   int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
  52
  53   int createLRSpillSlot(MachineFunction &MF);
  54   bool hasLRSpillSlot() { return LRSpillSlotSet; }
  55   int getLRSpillSlot() const {
  56     assert(LRSpillSlotSet && "LR Spill slot not set");
  57     return LRSpillSlot;
  58   }
  59
  60   int createFPSpillSlot(MachineFunction &MF);
  61   bool hasFPSpillSlot() { return FPSpillSlotSet; }
  62   int getFPSpillSlot() const {
  63     assert(FPSpillSlotSet && "FP Spill slot not set");
  64     return FPSpillSlot;
  65   }
  66
  67   const int* createEHSpillSlot(MachineFunction &MF);
  68   bool hasEHSpillSlot() { return EHSpillSlotSet; }
  69   const int* getEHSpillSlot() const {
  70     assert(EHSpillSlotSet && "EH Spill slot not set");
  71     return EHSpillSlot;
  72   }
  73
  74   void setReturnStackOffset(unsigned value) {
  75     assert(!ReturnStackOffsetSet && "Return stack offset set twice");
  76     ReturnStackOffset = value;
  77     ReturnStackOffsetSet = true;
  78   }
  79
  80   unsigned getReturnStackOffset() const {
  81     assert(ReturnStackOffsetSet && "Return stack offset not set");
  82     return ReturnStackOffset;
  83   }
  84
  85   bool isLargeFrame(const MachineFunction &MF) const;
  86
  87   std::vector<std::pair<MachineBasicBlock::iterator, CalleeSavedInfo>> &
  88   getSpillLabels() {
  89     return SpillLabels;
  90   }
  91 };
  92
  93 } // end namespace llvm
  94
  95 #endif // LLVM_LIB_TARGET_XCORE_XCOREMACHINEFUNCTIONINFO_H