R600: Add some missing CF instruction definitions to the .td files.
[oota-llvm.git] / lib / Target / R600 / SIInstrInfo.h
1 //===-- SIInstrInfo.h - SI Instruction Info Interface -----------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 /// \file
11 /// \brief Interface definition for SIInstrInfo.
12 //
13 //===----------------------------------------------------------------------===//
14
15
16 #ifndef SIINSTRINFO_H
17 #define SIINSTRINFO_H
18
19 #include "AMDGPUInstrInfo.h"
20 #include "SIRegisterInfo.h"
21
22 namespace llvm {
23
24 class SIInstrInfo : public AMDGPUInstrInfo {
25 private:
26   const SIRegisterInfo RI;
27
28   MachineInstrBuilder buildIndirectIndexLoop(MachineBasicBlock &MBB,
29                                              MachineBasicBlock::iterator I,
30                                              unsigned OffsetVGPR,
31                                              unsigned MovRelOp,
32                                              unsigned Dst,
33                                              unsigned Src0) const;
34   // If you add or remove instructions from this function, you will
35
36 public:
37   explicit SIInstrInfo(AMDGPUTargetMachine &tm);
38
39   const SIRegisterInfo &getRegisterInfo() const;
40
41   virtual void copyPhysReg(MachineBasicBlock &MBB,
42                            MachineBasicBlock::iterator MI, DebugLoc DL,
43                            unsigned DestReg, unsigned SrcReg,
44                            bool KillSrc) const;
45
46   void storeRegToStackSlot(MachineBasicBlock &MBB,
47                            MachineBasicBlock::iterator MI,
48                            unsigned SrcReg, bool isKill, int FrameIndex,
49                            const TargetRegisterClass *RC,
50                            const TargetRegisterInfo *TRI) const;
51
52   void loadRegFromStackSlot(MachineBasicBlock &MBB,
53                             MachineBasicBlock::iterator MI,
54                             unsigned DestReg, int FrameIndex,
55                             const TargetRegisterClass *RC,
56                             const TargetRegisterInfo *TRI) const;
57
58   unsigned commuteOpcode(unsigned Opcode) const;
59
60   virtual MachineInstr *commuteInstruction(MachineInstr *MI,
61                                            bool NewMI=false) const;
62
63   virtual unsigned getIEQOpcode() const {
64     llvm_unreachable("Unimplemented");
65   }
66
67   MachineInstr *buildMovInstr(MachineBasicBlock *MBB,
68                               MachineBasicBlock::iterator I,
69                               unsigned DstReg, unsigned SrcReg) const;
70   virtual bool isMov(unsigned Opcode) const;
71
72   virtual bool isSafeToMoveRegClassDefs(const TargetRegisterClass *RC) const;
73   int isMIMG(uint16_t Opcode) const;
74   int isSMRD(uint16_t Opcode) const;
75   bool isVOP1(uint16_t Opcode) const;
76   bool isVOP2(uint16_t Opcode) const;
77   bool isVOP3(uint16_t Opcode) const;
78   bool isVOPC(uint16_t Opcode) const;
79   bool isInlineConstant(const MachineOperand &MO) const;
80   bool isLiteralConstant(const MachineOperand &MO) const;
81
82   virtual bool verifyInstruction(const MachineInstr *MI,
83                                  StringRef &ErrInfo) const;
84
85   bool isSALUInstr(const MachineInstr &MI) const;
86   static unsigned getVALUOp(const MachineInstr &MI);
87   bool isSALUOpSupportedOnVALU(const MachineInstr &MI) const;
88
89   /// \brief Return the correct register class for \p OpNo.  For target-specific
90   /// instructions, this will return the register class that has been defined
91   /// in tablegen.  For generic instructions, like REG_SEQUENCE it will return
92   /// the register class of its machine operand.
93   /// to infer the correct register class base on the other operands.
94   const TargetRegisterClass *getOpRegClass(const MachineInstr &MI,
95                                            unsigned OpNo) const;\
96
97   /// \returns true if it is legal for the operand at index \p OpNo
98   /// to read a VGPR.
99   bool canReadVGPR(const MachineInstr &MI, unsigned OpNo) const;
100
101   /// \brief Legalize the \p OpIndex operand of this instruction by inserting
102   /// a MOV.  For example:
103   /// ADD_I32_e32 VGPR0, 15
104   /// to
105   /// MOV VGPR1, 15
106   /// ADD_I32_e32 VGPR0, VGPR1
107   ///
108   /// If the operand being legalized is a register, then a COPY will be used
109   /// instead of MOV.
110   void legalizeOpWithMove(MachineInstr *MI, unsigned OpIdx) const;
111
112   /// \brief Legalize all operands in this instruction.  This function may
113   /// create new instruction and insert them before \p MI.
114   void legalizeOperands(MachineInstr *MI) const;
115
116   /// \brief Replace this instruction's opcode with the equivalent VALU
117   /// opcode.  This function will also move the users of \p MI to the
118   /// VALU if necessary.
119   void moveToVALU(MachineInstr &MI) const;
120
121   virtual unsigned calculateIndirectAddress(unsigned RegIndex,
122                                             unsigned Channel) const;
123
124   virtual const TargetRegisterClass *getIndirectAddrRegClass() const;
125
126   virtual MachineInstrBuilder buildIndirectWrite(MachineBasicBlock *MBB,
127                                                  MachineBasicBlock::iterator I,
128                                                  unsigned ValueReg,
129                                                  unsigned Address,
130                                                  unsigned OffsetReg) const;
131
132   virtual MachineInstrBuilder buildIndirectRead(MachineBasicBlock *MBB,
133                                                 MachineBasicBlock::iterator I,
134                                                 unsigned ValueReg,
135                                                 unsigned Address,
136                                                 unsigned OffsetReg) const;
137   void reserveIndirectRegisters(BitVector &Reserved,
138                                 const MachineFunction &MF) const;
139
140   void LoadM0(MachineInstr *MoveRel, MachineBasicBlock::iterator I,
141               unsigned SavReg, unsigned IndexReg) const;
142 };
143
144 namespace AMDGPU {
145
146   int getVOPe64(uint16_t Opcode);
147   int getCommuteRev(uint16_t Opcode);
148   int getCommuteOrig(uint16_t Opcode);
149
150 } // End namespace AMDGPU
151
152 } // End namespace llvm
153
154 namespace SIInstrFlags {
155   enum Flags {
156     // First 4 bits are the instruction encoding
157     VM_CNT = 1 << 0,
158     EXP_CNT = 1 << 1,
159     LGKM_CNT = 1 << 2
160   };
161 }
162
163 #endif //SIINSTRINFO_H