//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the "Instituto Nokia de Tecnologia" and
-// is distributed under the University of Illinois Open Source
+// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/Target/TargetInstrInfo.h"
#include "ARMRegisterInfo.h"
+#include "ARM.h"
namespace llvm {
class ARMSubtarget;
// Instruction Flags.
//===------------------------------------------------------------------===//
- // This three-bit field describes the addressing mode used. Zero is unused
- // so that we can tell if we forgot to set a value.
+ // This four-bit field describes the addressing mode used.
AddrModeMask = 0xf,
+ AddrModeNone = 0,
AddrMode1 = 1,
AddrMode2 = 2,
AddrMode3 = 3,
AddrModeT1 = 6,
AddrModeT2 = 7,
AddrModeT4 = 8,
- AddrModeTs = 9, // i8 * 4 for pc and sp relative data
+ AddrModeTs = 9, // i8 * 4 for pc and sp relative data
// Size* - Flags to keep track of the size of an instruction.
SizeShift = 4,
IndexModePre = 1,
IndexModePost = 2,
- // Opcode
- OpcodeShift = 9,
- OpcodeMask = 0xf << OpcodeShift
+ //===------------------------------------------------------------------===//
+ // Misc flags.
+
+ // UnaryDP - Indicates this is a unary data processing instruction, i.e.
+ // it doesn't have a Rn operand.
+ UnaryDP = 1 << 9,
+
+ //===------------------------------------------------------------------===//
+ // Instruction encoding formats.
+ //
+ FormShift = 10,
+ FormMask = 0x1f << FormShift,
+
+ // Pseudo instructions
+ Pseudo = 0 << FormShift,
+
+ // Multiply instructions
+ MulFrm = 1 << FormShift,
+
+ // Branch instructions
+ BrFrm = 2 << FormShift,
+ BrMiscFrm = 3 << FormShift,
+
+ // Data Processing instructions
+ DPFrm = 4 << FormShift,
+ DPSoRegFrm = 5 << FormShift,
+
+ // Load and Store
+ LdFrm = 6 << FormShift,
+ StFrm = 7 << FormShift,
+ LdMiscFrm = 8 << FormShift,
+ StMiscFrm = 9 << FormShift,
+ LdStMulFrm = 10 << FormShift,
+
+ // Miscellaneous arithmetic instructions
+ ArithMiscFrm = 11 << FormShift,
+
+ // Extend instructions
+ ExtFrm = 12 << FormShift,
+
+ // VFP formats
+ VFPUnaryFrm = 13 << FormShift,
+ VFPBinaryFrm = 14 << FormShift,
+ VFPConv1Frm = 15 << FormShift,
+ VFPConv2Frm = 16 << FormShift,
+ VFPConv3Frm = 17 << FormShift,
+ VFPConv4Frm = 18 << FormShift,
+ VFPConv5Frm = 19 << FormShift,
+ VFPLdStFrm = 20 << FormShift,
+ VFPLdStMulFrm = 21 << FormShift,
+ VFPMiscFrm = 22 << FormShift,
+
+ // Thumb format
+ ThumbFrm = 23 << FormShift,
+
+ //===------------------------------------------------------------------===//
+ // Field shifts - such shifts are used to set field while generating
+ // machine instructions.
+ M_BitShift = 5,
+ ShiftImmShift = 5,
+ ShiftShift = 7,
+ N_BitShift = 7,
+ ImmHiShift = 8,
+ SoRotImmShift = 8,
+ RegRsShift = 8,
+ ExtRotImmShift = 10,
+ RegRdLoShift = 12,
+ RegRdShift = 12,
+ RegRdHiShift = 16,
+ RegRnShift = 16,
+ S_BitShift = 20,
+ W_BitShift = 21,
+ AM3_I_BitShift = 22,
+ D_BitShift = 22,
+ U_BitShift = 23,
+ P_BitShift = 24,
+ I_BitShift = 25,
+ CondShift = 28
};
}
-class ARMInstrInfo : public TargetInstrInfo {
+class ARMInstrInfo : public TargetInstrInfoImpl {
const ARMRegisterInfo RI;
public:
- ARMInstrInfo(const ARMSubtarget &STI);
+ explicit ARMInstrInfo(const ARMSubtarget &STI);
/// getRegisterInfo - TargetInstrInfo is a superset of MRegister info. As
/// such, whenever a client has an instance of instruction info, it should
/// always be able to get register info as well (through this method).
///
- virtual const MRegisterInfo &getRegisterInfo() const { return RI; }
+ virtual const ARMRegisterInfo &getRegisterInfo() const { return RI; }
/// getPointerRegClass - Return the register class to use to hold pointers.
/// This is used for addressing modes.
///
virtual bool isMoveInstr(const MachineInstr &MI,
unsigned &SrcReg, unsigned &DstReg) const;
- virtual unsigned isLoadFromStackSlot(MachineInstr *MI, int &FrameIndex) const;
- virtual unsigned isStoreToStackSlot(MachineInstr *MI, int &FrameIndex) const;
+ virtual unsigned isLoadFromStackSlot(const MachineInstr *MI,
+ int &FrameIndex) const;
+ virtual unsigned isStoreToStackSlot(const MachineInstr *MI,
+ int &FrameIndex) const;
+ void reMaterialize(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
+ unsigned DestReg, const MachineInstr *Orig) const;
+
virtual MachineInstr *convertToThreeAddress(MachineFunction::iterator &MFI,
MachineBasicBlock::iterator &MBBI,
- LiveVariables &LV) const;
+ LiveVariables *LV) const;
// Branch analysis.
virtual bool AnalyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB,
MachineBasicBlock *&FBB,
- std::vector<MachineOperand> &Cond) const;
+ SmallVectorImpl<MachineOperand> &Cond) const;
virtual unsigned RemoveBranch(MachineBasicBlock &MBB) const;
virtual unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
MachineBasicBlock *FBB,
- const std::vector<MachineOperand> &Cond) const;
- virtual bool BlockHasNoFallThrough(MachineBasicBlock &MBB) const;
- virtual bool ReverseBranchCondition(std::vector<MachineOperand> &Cond) const;
+ const SmallVectorImpl<MachineOperand> &Cond) const;
+ virtual bool copyRegToReg(MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator I,
+ unsigned DestReg, unsigned SrcReg,
+ const TargetRegisterClass *DestRC,
+ const TargetRegisterClass *SrcRC) const;
+ virtual void storeRegToStackSlot(MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator MBBI,
+ unsigned SrcReg, bool isKill, int FrameIndex,
+ const TargetRegisterClass *RC) const;
- // Predication support.
- virtual bool PredicateInstruction(MachineInstr *MI,
- std::vector<MachineOperand> &Cond) const;
-};
+ virtual void storeRegToAddr(MachineFunction &MF, unsigned SrcReg, bool isKill,
+ SmallVectorImpl<MachineOperand> &Addr,
+ const TargetRegisterClass *RC,
+ SmallVectorImpl<MachineInstr*> &NewMIs) const;
+
+ virtual void loadRegFromStackSlot(MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator MBBI,
+ unsigned DestReg, int FrameIndex,
+ const TargetRegisterClass *RC) const;
+
+ virtual void loadRegFromAddr(MachineFunction &MF, unsigned DestReg,
+ SmallVectorImpl<MachineOperand> &Addr,
+ const TargetRegisterClass *RC,
+ SmallVectorImpl<MachineInstr*> &NewMIs) const;
+ virtual bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator MI,
+ const std::vector<CalleeSavedInfo> &CSI) const;
+ virtual bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator MI,
+ const std::vector<CalleeSavedInfo> &CSI) const;
+
+ virtual MachineInstr* foldMemoryOperandImpl(MachineFunction &MF,
+ MachineInstr* MI,
+ const SmallVectorImpl<unsigned> &Ops,
+ int FrameIndex) const;
+
+ virtual MachineInstr* foldMemoryOperandImpl(MachineFunction &MF,
+ MachineInstr* MI,
+ const SmallVectorImpl<unsigned> &Ops,
+ MachineInstr* LoadMI) const {
+ return 0;
+ }
+
+ virtual bool canFoldMemoryOperand(const MachineInstr *MI,
+ const SmallVectorImpl<unsigned> &Ops) const;
+
+ virtual bool BlockHasNoFallThrough(const MachineBasicBlock &MBB) const;
+ virtual
+ bool ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const;
- // Utility routines
- namespace ARM {
- /// GetInstSize - Returns the size of the specified MachineInstr.
- ///
- unsigned GetInstSize(MachineInstr *MI);
+ // Predication support.
+ virtual bool isPredicated(const MachineInstr *MI) const;
- /// GetFunctionSize - Returns the size of the specified MachineFunction.
- ///
- unsigned GetFunctionSize(MachineFunction &MF);
+ ARMCC::CondCodes getPredicate(const MachineInstr *MI) const {
+ int PIdx = MI->findFirstPredOperandIdx();
+ return PIdx != -1 ? (ARMCC::CondCodes)MI->getOperand(PIdx).getImm()
+ : ARMCC::AL;
}
+
+ virtual
+ bool PredicateInstruction(MachineInstr *MI,
+ const SmallVectorImpl<MachineOperand> &Pred) const;
+
+ virtual
+ bool SubsumesPredicate(const SmallVectorImpl<MachineOperand> &Pred1,
+ const SmallVectorImpl<MachineOperand> &Pred2) const;
+
+ virtual bool DefinesPredicate(MachineInstr *MI,
+ std::vector<MachineOperand> &Pred) const;
+
+ /// GetInstSize - Returns the size of the specified MachineInstr.
+ ///
+ virtual unsigned GetInstSizeInBytes(const MachineInstr* MI) const;
+};
+
}
#endif
projects / oota-llvm.git / blobdiff