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      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
     96