forked from OSchip/llvm-project
238 lines
9.7 KiB
C++
238 lines
9.7 KiB
C++
//===-- PPCInstrInfo.h - PowerPC Instruction Information --------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// 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 TargetInstrInfo class.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_LIB_TARGET_POWERPC_PPCINSTRINFO_H
|
|
#define LLVM_LIB_TARGET_POWERPC_PPCINSTRINFO_H
|
|
|
|
#include "PPC.h"
|
|
#include "PPCRegisterInfo.h"
|
|
#include "llvm/Target/TargetInstrInfo.h"
|
|
|
|
#define GET_INSTRINFO_HEADER
|
|
#include "PPCGenInstrInfo.inc"
|
|
|
|
namespace llvm {
|
|
|
|
/// PPCII - This namespace holds all of the PowerPC target-specific
|
|
/// per-instruction flags. These must match the corresponding definitions in
|
|
/// PPC.td and PPCInstrFormats.td.
|
|
namespace PPCII {
|
|
enum {
|
|
// PPC970 Instruction Flags. These flags describe the characteristics of the
|
|
// PowerPC 970 (aka G5) dispatch groups and how they are formed out of
|
|
// raw machine instructions.
|
|
|
|
/// PPC970_First - This instruction starts a new dispatch group, so it will
|
|
/// always be the first one in the group.
|
|
PPC970_First = 0x1,
|
|
|
|
/// PPC970_Single - This instruction starts a new dispatch group and
|
|
/// terminates it, so it will be the sole instruction in the group.
|
|
PPC970_Single = 0x2,
|
|
|
|
/// PPC970_Cracked - This instruction is cracked into two pieces, requiring
|
|
/// two dispatch pipes to be available to issue.
|
|
PPC970_Cracked = 0x4,
|
|
|
|
/// PPC970_Mask/Shift - This is a bitmask that selects the pipeline type that
|
|
/// an instruction is issued to.
|
|
PPC970_Shift = 3,
|
|
PPC970_Mask = 0x07 << PPC970_Shift
|
|
};
|
|
enum PPC970_Unit {
|
|
/// These are the various PPC970 execution unit pipelines. Each instruction
|
|
/// is one of these.
|
|
PPC970_Pseudo = 0 << PPC970_Shift, // Pseudo instruction
|
|
PPC970_FXU = 1 << PPC970_Shift, // Fixed Point (aka Integer/ALU) Unit
|
|
PPC970_LSU = 2 << PPC970_Shift, // Load Store Unit
|
|
PPC970_FPU = 3 << PPC970_Shift, // Floating Point Unit
|
|
PPC970_CRU = 4 << PPC970_Shift, // Control Register Unit
|
|
PPC970_VALU = 5 << PPC970_Shift, // Vector ALU
|
|
PPC970_VPERM = 6 << PPC970_Shift, // Vector Permute Unit
|
|
PPC970_BRU = 7 << PPC970_Shift // Branch Unit
|
|
};
|
|
} // end namespace PPCII
|
|
|
|
|
|
class PPCInstrInfo : public PPCGenInstrInfo {
|
|
PPCSubtarget &Subtarget;
|
|
const PPCRegisterInfo RI;
|
|
|
|
bool StoreRegToStackSlot(MachineFunction &MF,
|
|
unsigned SrcReg, bool isKill, int FrameIdx,
|
|
const TargetRegisterClass *RC,
|
|
SmallVectorImpl<MachineInstr*> &NewMIs,
|
|
bool &NonRI, bool &SpillsVRS) const;
|
|
bool LoadRegFromStackSlot(MachineFunction &MF, DebugLoc DL,
|
|
unsigned DestReg, int FrameIdx,
|
|
const TargetRegisterClass *RC,
|
|
SmallVectorImpl<MachineInstr*> &NewMIs,
|
|
bool &NonRI, bool &SpillsVRS) const;
|
|
virtual void anchor();
|
|
public:
|
|
explicit PPCInstrInfo(PPCSubtarget &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).
|
|
///
|
|
const PPCRegisterInfo &getRegisterInfo() const { return RI; }
|
|
|
|
ScheduleHazardRecognizer *
|
|
CreateTargetHazardRecognizer(const TargetSubtargetInfo *STI,
|
|
const ScheduleDAG *DAG) const override;
|
|
ScheduleHazardRecognizer *
|
|
CreateTargetPostRAHazardRecognizer(const InstrItineraryData *II,
|
|
const ScheduleDAG *DAG) const override;
|
|
|
|
int getOperandLatency(const InstrItineraryData *ItinData,
|
|
const MachineInstr *DefMI, unsigned DefIdx,
|
|
const MachineInstr *UseMI,
|
|
unsigned UseIdx) const override;
|
|
int getOperandLatency(const InstrItineraryData *ItinData,
|
|
SDNode *DefNode, unsigned DefIdx,
|
|
SDNode *UseNode, unsigned UseIdx) const override {
|
|
return PPCGenInstrInfo::getOperandLatency(ItinData, DefNode, DefIdx,
|
|
UseNode, UseIdx);
|
|
}
|
|
|
|
bool isCoalescableExtInstr(const MachineInstr &MI,
|
|
unsigned &SrcReg, unsigned &DstReg,
|
|
unsigned &SubIdx) const override;
|
|
unsigned isLoadFromStackSlot(const MachineInstr *MI,
|
|
int &FrameIndex) const override;
|
|
unsigned isStoreToStackSlot(const MachineInstr *MI,
|
|
int &FrameIndex) const override;
|
|
|
|
// commuteInstruction - We can commute rlwimi instructions, but only if the
|
|
// rotate amt is zero. We also have to munge the immediates a bit.
|
|
MachineInstr *commuteInstruction(MachineInstr *MI, bool NewMI) const override;
|
|
|
|
bool findCommutedOpIndices(MachineInstr *MI, unsigned &SrcOpIdx1,
|
|
unsigned &SrcOpIdx2) const override;
|
|
|
|
void insertNoop(MachineBasicBlock &MBB,
|
|
MachineBasicBlock::iterator MI) const override;
|
|
|
|
|
|
// Branch analysis.
|
|
bool AnalyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB,
|
|
MachineBasicBlock *&FBB,
|
|
SmallVectorImpl<MachineOperand> &Cond,
|
|
bool AllowModify) const override;
|
|
unsigned RemoveBranch(MachineBasicBlock &MBB) const override;
|
|
unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
|
|
MachineBasicBlock *FBB,
|
|
const SmallVectorImpl<MachineOperand> &Cond,
|
|
DebugLoc DL) const override;
|
|
|
|
// Select analysis.
|
|
bool canInsertSelect(const MachineBasicBlock&,
|
|
const SmallVectorImpl<MachineOperand> &Cond,
|
|
unsigned, unsigned, int&, int&, int&) const override;
|
|
void insertSelect(MachineBasicBlock &MBB,
|
|
MachineBasicBlock::iterator MI, DebugLoc DL,
|
|
unsigned DstReg,
|
|
const SmallVectorImpl<MachineOperand> &Cond,
|
|
unsigned TrueReg, unsigned FalseReg) const override;
|
|
|
|
void copyPhysReg(MachineBasicBlock &MBB,
|
|
MachineBasicBlock::iterator I, DebugLoc DL,
|
|
unsigned DestReg, unsigned SrcReg,
|
|
bool KillSrc) const override;
|
|
|
|
void storeRegToStackSlot(MachineBasicBlock &MBB,
|
|
MachineBasicBlock::iterator MBBI,
|
|
unsigned SrcReg, bool isKill, int FrameIndex,
|
|
const TargetRegisterClass *RC,
|
|
const TargetRegisterInfo *TRI) const override;
|
|
|
|
void loadRegFromStackSlot(MachineBasicBlock &MBB,
|
|
MachineBasicBlock::iterator MBBI,
|
|
unsigned DestReg, int FrameIndex,
|
|
const TargetRegisterClass *RC,
|
|
const TargetRegisterInfo *TRI) const override;
|
|
|
|
bool
|
|
ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const override;
|
|
|
|
bool FoldImmediate(MachineInstr *UseMI, MachineInstr *DefMI,
|
|
unsigned Reg, MachineRegisterInfo *MRI) const override;
|
|
|
|
// If conversion by predication (only supported by some branch instructions).
|
|
// All of the profitability checks always return true; it is always
|
|
// profitable to use the predicated branches.
|
|
bool isProfitableToIfCvt(MachineBasicBlock &MBB,
|
|
unsigned NumCycles, unsigned ExtraPredCycles,
|
|
const BranchProbability &Probability) const override {
|
|
return true;
|
|
}
|
|
|
|
bool isProfitableToIfCvt(MachineBasicBlock &TMBB,
|
|
unsigned NumT, unsigned ExtraT,
|
|
MachineBasicBlock &FMBB,
|
|
unsigned NumF, unsigned ExtraF,
|
|
const BranchProbability &Probability) const override;
|
|
|
|
bool isProfitableToDupForIfCvt(MachineBasicBlock &MBB,
|
|
unsigned NumCycles,
|
|
const BranchProbability
|
|
&Probability) const override {
|
|
return true;
|
|
}
|
|
|
|
bool isProfitableToUnpredicate(MachineBasicBlock &TMBB,
|
|
MachineBasicBlock &FMBB) const override {
|
|
return false;
|
|
}
|
|
|
|
// Predication support.
|
|
bool isPredicated(const MachineInstr *MI) const override;
|
|
|
|
bool isUnpredicatedTerminator(const MachineInstr *MI) const override;
|
|
|
|
bool PredicateInstruction(MachineInstr *MI,
|
|
const SmallVectorImpl<MachineOperand> &Pred) const override;
|
|
|
|
bool SubsumesPredicate(const SmallVectorImpl<MachineOperand> &Pred1,
|
|
const SmallVectorImpl<MachineOperand> &Pred2) const override;
|
|
|
|
bool DefinesPredicate(MachineInstr *MI,
|
|
std::vector<MachineOperand> &Pred) const override;
|
|
|
|
bool isPredicable(MachineInstr *MI) const override;
|
|
|
|
// Comparison optimization.
|
|
|
|
|
|
bool analyzeCompare(const MachineInstr *MI,
|
|
unsigned &SrcReg, unsigned &SrcReg2,
|
|
int &Mask, int &Value) const override;
|
|
|
|
bool optimizeCompareInstr(MachineInstr *CmpInstr,
|
|
unsigned SrcReg, unsigned SrcReg2,
|
|
int Mask, int Value,
|
|
const MachineRegisterInfo *MRI) const override;
|
|
|
|
/// GetInstSize - Return the number of bytes of code the specified
|
|
/// instruction may be. This returns the maximum number of bytes.
|
|
///
|
|
unsigned GetInstSizeInBytes(const MachineInstr *MI) const;
|
|
|
|
void getNoopForMachoTarget(MCInst &NopInst) const override;
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|