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Diffstat (limited to 'contrib/llvm/lib/Target/ARM/ARMMachineFunctionInfo.h')
| -rw-r--r-- | contrib/llvm/lib/Target/ARM/ARMMachineFunctionInfo.h | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/ARM/ARMMachineFunctionInfo.h b/contrib/llvm/lib/Target/ARM/ARMMachineFunctionInfo.h new file mode 100644 index 000000000000..88d96c0be8a7 --- /dev/null +++ b/contrib/llvm/lib/Target/ARM/ARMMachineFunctionInfo.h @@ -0,0 +1,275 @@ +//===-- 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/ADT/BitVector.h" +#include "llvm/CodeGen/MachineFunction.h" +#include "llvm/Target/TargetMachine.h" +#include "llvm/Target/TargetRegisterInfo.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 + /// + /// Also see AlignedDPRCSRegs below. Not all D-regs need to go in area 3. + /// Some may be spilled after the stack has been realigned. + 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; + + /// NumAlignedDPRCS2Regs - The number of callee-saved DPRs that are saved in + /// the aligned portion of the stack frame. This is always a contiguous + /// sequence of D-registers starting from d8. + /// + /// We do not keep track of the frame indices used for these registers - they + /// behave like any other frame index in the aligned stack frame. These + /// registers also aren't included in DPRCSSize above. + unsigned NumAlignedDPRCS2Regs; + + /// 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; + + /// GlobalBaseReg - keeps track of the virtual register initialized for + /// use as the global base register. This is used for PIC in some PIC + /// relocation models. + unsigned GlobalBaseReg; + +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), + NumAlignedDPRCS2Regs(0), + JumpTableUId(0), PICLabelUId(0), + VarArgsFrameIndex(0), HasITBlocks(false), GlobalBaseReg(0) {} + + 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), GlobalBaseReg(0) {} + + 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 getNumAlignedDPRCS2Regs() const { return NumAlignedDPRCS2Regs; } + void setNumAlignedDPRCS2Regs(unsigned n) { NumAlignedDPRCS2Regs = n; } + + 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; } + + unsigned getGlobalBaseReg() const { return GlobalBaseReg; } + void setGlobalBaseReg(unsigned Reg) { GlobalBaseReg = Reg; } + + 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 |