-//===- PPCRegisterInfo.h - PowerPC Register Information Impl -----*- C++ -*-==//
+//===-- PPCRegisterInfo.h - PowerPC Register Information Impl ---*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
-// This file contains the PowerPC implementation of the MRegisterInfo class.
+// This file contains the PowerPC implementation of the TargetRegisterInfo
+// class.
//
//===----------------------------------------------------------------------===//
#define POWERPC32_REGISTERINFO_H
#include "PPC.h"
-#include "PPCGenRegisterInfo.h.inc"
-#include <map>
+#include "llvm/ADT/DenseMap.h"
+
+#define GET_REGINFO_HEADER
+#include "PPCGenRegisterInfo.inc"
namespace llvm {
class PPCSubtarget;
class Type;
class PPCRegisterInfo : public PPCGenRegisterInfo {
- std::map<unsigned, unsigned> ImmToIdxMap;
+ DenseMap<unsigned, unsigned> ImmToIdxMap;
const PPCSubtarget &Subtarget;
- const TargetInstrInfo &TII;
public:
- PPCRegisterInfo(const PPCSubtarget &SubTarget, const TargetInstrInfo &tii);
+ PPCRegisterInfo(const PPCSubtarget &SubTarget);
- /// getRegisterNumbering - Given the enum value for some register, e.g.
- /// PPC::F14, return the number that it corresponds to (e.g. 14).
- static unsigned getRegisterNumbering(unsigned RegEnum);
+ /// getPointerRegClass - Return the register class to use to hold pointers.
+ /// This is used for addressing modes.
+ const TargetRegisterClass *
+ getPointerRegClass(const MachineFunction &MF, unsigned Kind=0) const override;
+
+ unsigned getRegPressureLimit(const TargetRegisterClass *RC,
+ MachineFunction &MF) const override;
+
+ const TargetRegisterClass*
+ getLargestLegalSuperClass(const TargetRegisterClass *RC) const override;
/// Code Generation virtual methods...
- void storeRegToStackSlot(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MBBI,
- unsigned SrcReg, int FrameIndex,
- const TargetRegisterClass *RC) const;
-
- void loadRegFromStackSlot(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MBBI,
- unsigned DestReg, int FrameIndex,
- const TargetRegisterClass *RC) const;
-
- void copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
- unsigned DestReg, unsigned SrcReg,
- const TargetRegisterClass *RC) const;
-
- /// foldMemoryOperand - PowerPC (like most RISC's) can only fold spills into
- /// copy instructions, turning them into load/store instructions.
- virtual MachineInstr* foldMemoryOperand(MachineInstr* MI, unsigned OpNum,
- int FrameIndex) const;
-
- const unsigned *getCalleeSavedRegs() const;
+ const MCPhysReg *
+ getCalleeSavedRegs(const MachineFunction* MF =nullptr) const override;
+ const uint32_t *getCallPreservedMask(CallingConv::ID CC) const override;
+ const uint32_t *getNoPreservedMask() const;
- const TargetRegisterClass* const* getCalleeSavedRegClasses() const;
+ BitVector getReservedRegs(const MachineFunction &MF) const override;
- BitVector getReservedRegs(const MachineFunction &MF) const;
+ /// We require the register scavenger.
+ bool requiresRegisterScavenging(const MachineFunction &MF) const override {
+ return true;
+ }
- /// targetHandlesStackFrameRounding - Returns true if the target is
- /// responsible for rounding up the stack frame (probably at emitPrologue
- /// time).
- bool targetHandlesStackFrameRounding() const { return true; }
+ bool requiresFrameIndexScavenging(const MachineFunction &MF) const override {
+ return true;
+ }
- bool hasFP(const MachineFunction &MF) const;
+ bool trackLivenessAfterRegAlloc(const MachineFunction &MF) const override {
+ return true;
+ }
- void eliminateCallFramePseudoInstr(MachineFunction &MF,
- MachineBasicBlock &MBB,
- MachineBasicBlock::iterator I) const;
+ bool requiresVirtualBaseRegisters(const MachineFunction &MF) const override {
+ return true;
+ }
- /// usesLR - Returns if the link registers (LR) has been used in the function.
- ///
- bool usesLR(MachineFunction &MF) const;
-
void lowerDynamicAlloc(MachineBasicBlock::iterator II) const;
+ void lowerCRSpilling(MachineBasicBlock::iterator II,
+ unsigned FrameIndex) const;
+ void lowerCRRestore(MachineBasicBlock::iterator II,
+ unsigned FrameIndex) const;
+ void lowerCRBitSpilling(MachineBasicBlock::iterator II,
+ unsigned FrameIndex) const;
+ void lowerCRBitRestore(MachineBasicBlock::iterator II,
+ unsigned FrameIndex) const;
+ void lowerVRSAVESpilling(MachineBasicBlock::iterator II,
+ unsigned FrameIndex) const;
+ void lowerVRSAVERestore(MachineBasicBlock::iterator II,
+ unsigned FrameIndex) const;
+
+ bool hasReservedSpillSlot(const MachineFunction &MF, unsigned Reg,
+ int &FrameIdx) const override;
void eliminateFrameIndex(MachineBasicBlock::iterator II,
- RegScavenger *RS = NULL) const;
-
- /// determineFrameLayout - Determine the size of the frame and maximum call
- /// frame size.
- void determineFrameLayout(MachineFunction &MF) const;
-
- void processFunctionBeforeCalleeSavedScan(MachineFunction &MF) const;
- void emitPrologue(MachineFunction &MF) const;
- void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
+ int SPAdj, unsigned FIOperandNum,
+ RegScavenger *RS = nullptr) const override;
+
+ // Support for virtual base registers.
+ bool needsFrameBaseReg(MachineInstr *MI, int64_t Offset) const override;
+ void materializeFrameBaseRegister(MachineBasicBlock *MBB,
+ unsigned BaseReg, int FrameIdx,
+ int64_t Offset) const override;
+ void resolveFrameIndex(MachineInstr &MI, unsigned BaseReg,
+ int64_t Offset) const override;
+ bool isFrameOffsetLegal(const MachineInstr *MI,
+ int64_t Offset) const override;
// Debug information queries.
- unsigned getRARegister() const;
- unsigned getFrameRegister(MachineFunction &MF) const;
- void getInitialFrameState(std::vector<MachineMove> &Moves) const;
+ unsigned getFrameRegister(const MachineFunction &MF) const override;
- // Exception handling queries.
- unsigned getEHExceptionRegister() const;
- unsigned getEHHandlerRegister() const;
+ // Base pointer (stack realignment) support.
+ unsigned getBaseRegister(const MachineFunction &MF) const;
+ bool hasBasePointer(const MachineFunction &MF) const;
+ bool canRealignStack(const MachineFunction &MF) const;
+ bool needsStackRealignment(const MachineFunction &MF) const override;
};
} // end namespace llvm