-//====- ARMMachineFuctionInfo.h - ARM machine function info -----*- C++ -*-===//
+//===-- ARMMachineFuctionInfo.h - ARM machine function info -----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
#define ARMMACHINEFUNCTIONINFO_H
#include "ARMSubtarget.h"
+#include "llvm/ADT/BitVector.h"
#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/Target/TargetMachine.h"
-#include "llvm/ADT/BitVector.h"
+#include "llvm/Target/TargetRegisterInfo.h"
+#include "llvm/ADT/DenseMap.h"
namespace llvm {
-/// ARMFunctionInfo - This class is derived from MachineFunction private
-/// ARM target-specific information for each MachineFunction.
+/// 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.
/// 'isThumb'.
bool hasThumb2;
+ /// StByValParamsPadding - For parameter that is split between
+ /// GPRs and memory; while recovering GPRs part, when
+ /// StackAlignment > 4, and GPRs-part-size mod StackAlignment != 0,
+ /// we need to insert gap before parameter start address. It allows to
+ /// "attach" GPR-part to the part that was passed via stack.
+ unsigned StByValParamsPadding;
+
/// VarArgsRegSaveSize - Size of the register save area for vararg functions.
///
- unsigned VarArgsRegSaveSize;
+ unsigned ArgRegsSaveSize;
+
+ /// ReturnRegsCount - Number of registers used up in the return.
+ unsigned ReturnRegsCount;
/// 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;
/// 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;
unsigned GPRCS2Size;
unsigned DPRCSSize;
- /// GPRCS1Frames, GPRCS2Frames, DPRCSFrames - Keeps track of frame indices
- /// which belong to these spill areas.
- BitVector GPRCS1Frames;
- BitVector GPRCS2Frames;
- BitVector DPRCSFrames;
-
- /// SpilledCSRegs - A BitVector mask of all spilled callee-saved registers.
+ /// 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.
///
- BitVector SpilledCSRegs;
+ /// 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 ConstPoolEntryUId;
+ 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;
+
+ /// ArgumentStackSize - amount of bytes on stack consumed by the arguments
+ /// being passed on the stack
+ unsigned ArgumentStackSize;
+
+ /// CoalescedWeights - mapping of basic blocks to the rolling counter of
+ /// coalesced weights.
+ DenseMap<const MachineBasicBlock*, unsigned> CoalescedWeights;
+
public:
ARMFunctionInfo() :
isThumb(false),
hasThumb2(false),
- VarArgsRegSaveSize(0), HasStackFrame(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), ConstPoolEntryUId(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),
+ ArgRegsSaveSize(0), ReturnRegsCount(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),
- SpilledCSRegs(MF.getTarget().getRegisterInfo()->getNumRegs()),
- JumpTableUId(0), ConstPoolEntryUId(0), VarArgsFrameIndex(0),
- HasITBlocks(false) {}
+ NumAlignedDPRCS2Regs(0),
+ JumpTableUId(0), PICLabelUId(0),
+ VarArgsFrameIndex(0), HasITBlocks(false), GlobalBaseReg(0) {}
+
+ explicit ARMFunctionInfo(MachineFunction &MF);
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; }
+ unsigned getStoredByValParamsPadding() const { return StByValParamsPadding; }
+ void setStoredByValParamsPadding(unsigned p) { StByValParamsPadding = p; }
+
+ unsigned getArgRegsSaveSize(unsigned Align = 0) const {
+ if (!Align)
+ return ArgRegsSaveSize;
+ return (ArgRegsSaveSize + Align - 1) & ~(Align - 1);
+ }
+ void setArgRegsSaveSize(unsigned s) { ArgRegsSaveSize = s; }
+
+ unsigned getReturnRegsCount() const { return ReturnRegsCount; }
+ void setReturnRegsCount(unsigned s) { ReturnRegsCount = 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 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;
- }
- }
-
- void setCSRegisterIsSpilled(unsigned Reg) {
- SpilledCSRegs.set(Reg);
- }
-
- bool isCSRegisterSpilled(unsigned Reg) const {
- return SpilledCSRegs[Reg];
- }
-
- const BitVector &getSpilledCSRegisters() const {
- return SpilledCSRegs;
- }
+ unsigned getArgumentStackSize() const { return ArgumentStackSize; }
+ void setArgumentStackSize(unsigned size) { ArgumentStackSize = size; }
unsigned createJumpTableUId() {
return JumpTableUId++;
return JumpTableUId;
}
- void initConstPoolEntryUId(unsigned UId) {
- ConstPoolEntryUId = UId;
+ void initPICLabelUId(unsigned UId) {
+ PICLabelUId = UId;
}
- unsigned getNumConstPoolEntries() const {
- return ConstPoolEntryUId;
+ unsigned getNumPICLabels() const {
+ return PICLabelUId;
}
- unsigned createConstPoolEntryUId() {
- return ConstPoolEntryUId++;
+ unsigned createPICLabelUId() {
+ return PICLabelUId++;
}
int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
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)
+ llvm_unreachable("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;
+ }
+
+ DenseMap<const MachineBasicBlock*, unsigned>::iterator getCoalescedWeight(
+ MachineBasicBlock* MBB) {
+ auto It = CoalescedWeights.find(MBB);
+ if (It == CoalescedWeights.end()) {
+ It = CoalescedWeights.insert(std::make_pair(MBB, 0)).first;
+ }
+ return It;
+ }
};
} // End llvm namespace
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