| //====- ARMMachineFuctionInfo.h - ARM machine function info -----*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file declares ARM-specific per-machine-function information. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef ARMMACHINEFUNCTIONINFO_H |
| #define ARMMACHINEFUNCTIONINFO_H |
| |
| #include "ARMSubtarget.h" |
| #include "llvm/CodeGen/MachineFunction.h" |
| #include "llvm/Target/TargetRegisterInfo.h" |
| #include "llvm/Target/TargetMachine.h" |
| #include "llvm/ADT/BitVector.h" |
| |
| namespace llvm { |
| |
| /// ARMFunctionInfo - This class is derived from MachineFunctionInfo and |
| /// contains private ARM-specific information for each MachineFunction. |
| class ARMFunctionInfo : public MachineFunctionInfo { |
| virtual void anchor(); |
| |
| /// isThumb - True if this function is compiled under Thumb mode. |
| /// Used to initialized Align, so must precede it. |
| bool isThumb; |
| |
| /// hasThumb2 - True if the target architecture supports Thumb2. Do not use |
| /// to determine if function is compiled under Thumb mode, for that use |
| /// 'isThumb'. |
| bool hasThumb2; |
| |
| /// VarArgsRegSaveSize - Size of the register save area for vararg functions. |
| /// |
| unsigned VarArgsRegSaveSize; |
| |
| /// HasStackFrame - True if this function has a stack frame. Set by |
| /// processFunctionBeforeCalleeSavedScan(). |
| bool HasStackFrame; |
| |
| /// RestoreSPFromFP - True if epilogue should restore SP from FP. Set by |
| /// emitPrologue. |
| bool RestoreSPFromFP; |
| |
| /// LRSpilledForFarJump - True if the LR register has been for spilled to |
| /// enable far jump. |
| bool LRSpilledForFarJump; |
| |
| /// FramePtrSpillOffset - If HasStackFrame, this records the frame pointer |
| /// spill stack offset. |
| unsigned FramePtrSpillOffset; |
| |
| /// GPRCS1Offset, GPRCS2Offset, DPRCSOffset - Starting offset of callee saved |
| /// register spills areas. For Mac OS X: |
| /// |
| /// GPR callee-saved (1) : r4, r5, r6, r7, lr |
| /// -------------------------------------------- |
| /// GPR callee-saved (2) : r8, r10, r11 |
| /// -------------------------------------------- |
| /// DPR callee-saved : d8 - d15 |
| unsigned GPRCS1Offset; |
| unsigned GPRCS2Offset; |
| unsigned DPRCSOffset; |
| |
| /// GPRCS1Size, GPRCS2Size, DPRCSSize - Sizes of callee saved register spills |
| /// areas. |
| unsigned GPRCS1Size; |
| unsigned GPRCS2Size; |
| unsigned DPRCSSize; |
| |
| /// GPRCS1Frames, GPRCS2Frames, DPRCSFrames - Keeps track of frame indices |
| /// which belong to these spill areas. |
| BitVector GPRCS1Frames; |
| BitVector GPRCS2Frames; |
| BitVector DPRCSFrames; |
| |
| /// JumpTableUId - Unique id for jumptables. |
| /// |
| unsigned JumpTableUId; |
| |
| unsigned PICLabelUId; |
| |
| /// VarArgsFrameIndex - FrameIndex for start of varargs area. |
| int VarArgsFrameIndex; |
| |
| /// HasITBlocks - True if IT blocks have been inserted. |
| bool HasITBlocks; |
| |
| /// CPEClones - Track constant pool entries clones created by Constant Island |
| /// pass. |
| DenseMap<unsigned, unsigned> CPEClones; |
| |
| public: |
| ARMFunctionInfo() : |
| isThumb(false), |
| hasThumb2(false), |
| VarArgsRegSaveSize(0), HasStackFrame(false), RestoreSPFromFP(false), |
| LRSpilledForFarJump(false), |
| FramePtrSpillOffset(0), GPRCS1Offset(0), GPRCS2Offset(0), DPRCSOffset(0), |
| GPRCS1Size(0), GPRCS2Size(0), DPRCSSize(0), |
| GPRCS1Frames(0), GPRCS2Frames(0), DPRCSFrames(0), |
| JumpTableUId(0), PICLabelUId(0), |
| VarArgsFrameIndex(0), HasITBlocks(false) {} |
| |
| explicit ARMFunctionInfo(MachineFunction &MF) : |
| isThumb(MF.getTarget().getSubtarget<ARMSubtarget>().isThumb()), |
| hasThumb2(MF.getTarget().getSubtarget<ARMSubtarget>().hasThumb2()), |
| VarArgsRegSaveSize(0), HasStackFrame(false), RestoreSPFromFP(false), |
| LRSpilledForFarJump(false), |
| FramePtrSpillOffset(0), GPRCS1Offset(0), GPRCS2Offset(0), DPRCSOffset(0), |
| GPRCS1Size(0), GPRCS2Size(0), DPRCSSize(0), |
| GPRCS1Frames(32), GPRCS2Frames(32), DPRCSFrames(32), |
| JumpTableUId(0), PICLabelUId(0), |
| VarArgsFrameIndex(0), HasITBlocks(false) {} |
| |
| bool isThumbFunction() const { return isThumb; } |
| bool isThumb1OnlyFunction() const { return isThumb && !hasThumb2; } |
| bool isThumb2Function() const { return isThumb && hasThumb2; } |
| |
| unsigned getVarArgsRegSaveSize() const { return VarArgsRegSaveSize; } |
| void setVarArgsRegSaveSize(unsigned s) { VarArgsRegSaveSize = s; } |
| |
| bool hasStackFrame() const { return HasStackFrame; } |
| void setHasStackFrame(bool s) { HasStackFrame = s; } |
| |
| bool shouldRestoreSPFromFP() const { return RestoreSPFromFP; } |
| void setShouldRestoreSPFromFP(bool s) { RestoreSPFromFP = s; } |
| |
| bool isLRSpilledForFarJump() const { return LRSpilledForFarJump; } |
| void setLRIsSpilledForFarJump(bool s) { LRSpilledForFarJump = s; } |
| |
| unsigned getFramePtrSpillOffset() const { return FramePtrSpillOffset; } |
| void setFramePtrSpillOffset(unsigned o) { FramePtrSpillOffset = o; } |
| |
| unsigned getGPRCalleeSavedArea1Offset() const { return GPRCS1Offset; } |
| unsigned getGPRCalleeSavedArea2Offset() const { return GPRCS2Offset; } |
| unsigned getDPRCalleeSavedAreaOffset() const { return DPRCSOffset; } |
| |
| void setGPRCalleeSavedArea1Offset(unsigned o) { GPRCS1Offset = o; } |
| void setGPRCalleeSavedArea2Offset(unsigned o) { GPRCS2Offset = o; } |
| void setDPRCalleeSavedAreaOffset(unsigned o) { DPRCSOffset = o; } |
| |
| unsigned getGPRCalleeSavedArea1Size() const { return GPRCS1Size; } |
| unsigned getGPRCalleeSavedArea2Size() const { return GPRCS2Size; } |
| unsigned getDPRCalleeSavedAreaSize() const { return DPRCSSize; } |
| |
| void setGPRCalleeSavedArea1Size(unsigned s) { GPRCS1Size = s; } |
| void setGPRCalleeSavedArea2Size(unsigned s) { GPRCS2Size = s; } |
| void setDPRCalleeSavedAreaSize(unsigned s) { DPRCSSize = s; } |
| |
| bool isGPRCalleeSavedArea1Frame(int fi) const { |
| if (fi < 0 || fi >= (int)GPRCS1Frames.size()) |
| return false; |
| return GPRCS1Frames[fi]; |
| } |
| bool isGPRCalleeSavedArea2Frame(int fi) const { |
| if (fi < 0 || fi >= (int)GPRCS2Frames.size()) |
| return false; |
| return GPRCS2Frames[fi]; |
| } |
| bool isDPRCalleeSavedAreaFrame(int fi) const { |
| if (fi < 0 || fi >= (int)DPRCSFrames.size()) |
| return false; |
| return DPRCSFrames[fi]; |
| } |
| |
| void addGPRCalleeSavedArea1Frame(int fi) { |
| if (fi >= 0) { |
| int Size = GPRCS1Frames.size(); |
| if (fi >= Size) { |
| Size *= 2; |
| if (fi >= Size) |
| Size = fi+1; |
| GPRCS1Frames.resize(Size); |
| } |
| GPRCS1Frames[fi] = true; |
| } |
| } |
| void addGPRCalleeSavedArea2Frame(int fi) { |
| if (fi >= 0) { |
| int Size = GPRCS2Frames.size(); |
| if (fi >= Size) { |
| Size *= 2; |
| if (fi >= Size) |
| Size = fi+1; |
| GPRCS2Frames.resize(Size); |
| } |
| GPRCS2Frames[fi] = true; |
| } |
| } |
| void addDPRCalleeSavedAreaFrame(int fi) { |
| if (fi >= 0) { |
| int Size = DPRCSFrames.size(); |
| if (fi >= Size) { |
| Size *= 2; |
| if (fi >= Size) |
| Size = fi+1; |
| DPRCSFrames.resize(Size); |
| } |
| DPRCSFrames[fi] = true; |
| } |
| } |
| |
| unsigned createJumpTableUId() { |
| return JumpTableUId++; |
| } |
| |
| unsigned getNumJumpTables() const { |
| return JumpTableUId; |
| } |
| |
| void initPICLabelUId(unsigned UId) { |
| PICLabelUId = UId; |
| } |
| |
| unsigned getNumPICLabels() const { |
| return PICLabelUId; |
| } |
| |
| unsigned createPICLabelUId() { |
| return PICLabelUId++; |
| } |
| |
| int getVarArgsFrameIndex() const { return VarArgsFrameIndex; } |
| void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; } |
| |
| bool hasITBlocks() const { return HasITBlocks; } |
| void setHasITBlocks(bool h) { HasITBlocks = h; } |
| |
| void recordCPEClone(unsigned CPIdx, unsigned CPCloneIdx) { |
| if (!CPEClones.insert(std::make_pair(CPCloneIdx, CPIdx)).second) |
| assert(0 && "Duplicate entries!"); |
| } |
| |
| unsigned getOriginalCPIdx(unsigned CloneIdx) const { |
| DenseMap<unsigned, unsigned>::const_iterator I = CPEClones.find(CloneIdx); |
| if (I != CPEClones.end()) |
| return I->second; |
| else |
| return -1U; |
| } |
| }; |
| } // End llvm namespace |
| |
| #endif // ARMMACHINEFUNCTIONINFO_H |