-//===- PPC32RegisterInfo.h - PowerPC32 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.
//
//===----------------------------------------------------------------------===//
#ifndef POWERPC32_REGISTERINFO_H
#define POWERPC32_REGISTERINFO_H
-#include "PowerPC.h"
-#include "PPC32GenRegisterInfo.h.inc"
-#include <map>
+#include "llvm/ADT/DenseMap.h"
+#include "PPC.h"
-namespace llvm {
+#define GET_REGINFO_HEADER
+#include "PPCGenRegisterInfo.inc"
+namespace llvm {
+class PPCSubtarget;
+class TargetInstrInfo;
class Type;
-class PPC32RegisterInfo : public PPC32GenRegisterInfo {
- std::map<unsigned, unsigned> ImmToIdxMap;
+class PPCRegisterInfo : public PPCGenRegisterInfo {
+ DenseMap<unsigned, unsigned> ImmToIdxMap;
+ const PPCSubtarget &Subtarget;
public:
- PPC32RegisterInfo();
+ PPCRegisterInfo(const PPCSubtarget &SubTarget);
+
+ /// getPointerRegClass - Return the register class to use to hold pointers.
+ /// This is used for addressing modes.
+ virtual const TargetRegisterClass *
+ getPointerRegClass(const MachineFunction &MF, unsigned Kind=0) const;
+
+ unsigned getRegPressureLimit(const TargetRegisterClass *RC,
+ MachineFunction &MF) const;
/// Code Generation virtual methods...
- void storeRegToStackSlot(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MBBI,
- unsigned SrcReg, int FrameIndex) const;
+ const uint16_t *getCalleeSavedRegs(const MachineFunction* MF = 0) const;
+ const uint32_t *getCallPreservedMask(CallingConv::ID CC) const;
+ const uint32_t *getNoPreservedMask() const;
+
+ BitVector getReservedRegs(const MachineFunction &MF) const;
+
+ /// We require the register scavenger.
+ bool requiresRegisterScavenging(const MachineFunction &MF) const {
+ return true;
+ }
+
+ bool requiresFrameIndexScavenging(const MachineFunction &MF) const {
+ return true;
+ }
+
+ bool trackLivenessAfterRegAlloc(const MachineFunction &MF) const {
+ return true;
+ }
+
+ virtual bool requiresVirtualBaseRegisters(const MachineFunction &MF) const {
+ return true;
+ }
- void loadRegFromStackSlot(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MBBI,
- unsigned DestReg, int FrameIndex) const;
+ void lowerDynamicAlloc(MachineBasicBlock::iterator II) const;
+ void lowerCRSpilling(MachineBasicBlock::iterator II,
+ unsigned FrameIndex) const;
+ void lowerCRRestore(MachineBasicBlock::iterator II,
+ unsigned FrameIndex) const;
+ void lowerVRSAVESpilling(MachineBasicBlock::iterator II,
+ unsigned FrameIndex) const;
+ void lowerVRSAVERestore(MachineBasicBlock::iterator II,
+ unsigned FrameIndex) const;
- void copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
- unsigned DestReg, unsigned SrcReg,
- const TargetRegisterClass *RC) const;
+ bool hasReservedSpillSlot(const MachineFunction &MF, unsigned Reg,
+ int &FrameIdx) const;
+ void eliminateFrameIndex(MachineBasicBlock::iterator II,
+ int SPAdj, unsigned FIOperandNum,
+ RegScavenger *RS = NULL) const;
- void eliminateCallFramePseudoInstr(MachineFunction &MF,
- MachineBasicBlock &MBB,
- MachineBasicBlock::iterator I) const;
+ // Support for virtual base registers.
+ bool needsFrameBaseReg(MachineInstr *MI, int64_t Offset) const;
+ void materializeFrameBaseRegister(MachineBasicBlock *MBB,
+ unsigned BaseReg, int FrameIdx,
+ int64_t Offset) const;
+ void resolveFrameIndex(MachineBasicBlock::iterator I,
+ unsigned BaseReg, int64_t Offset) const;
+ bool isFrameOffsetLegal(const MachineInstr *MI, int64_t Offset) const;
- void eliminateFrameIndex(MachineBasicBlock::iterator II) const;
+ // Debug information queries.
+ unsigned getFrameRegister(const MachineFunction &MF) const;
- void emitPrologue(MachineFunction &MF) const;
- void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) 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;
};
} // end namespace llvm