R600/SI: Add InstrMapping for noret atomics.
[oota-llvm.git] / lib / Target / R600 / SIInstrInfo.h
index de3ff0733043800a1044b585021410947402366f..ed043ac9cbad48aadbb442266ec2ae579e638fe4 100644 (file)
@@ -13,8 +13,8 @@
 //===----------------------------------------------------------------------===//
 
 
-#ifndef SIINSTRINFO_H
-#define SIINSTRINFO_H
+#ifndef LLVM_LIB_TARGET_R600_SIINSTRINFO_H
+#define LLVM_LIB_TARGET_R600_SIINSTRINFO_H
 
 #include "AMDGPUInstrInfo.h"
 #include "SIRegisterInfo.h"
@@ -25,66 +25,117 @@ class SIInstrInfo : public AMDGPUInstrInfo {
 private:
   const SIRegisterInfo RI;
 
-  MachineInstrBuilder buildIndirectIndexLoop(MachineBasicBlock &MBB,
-                                             MachineBasicBlock::iterator I,
-                                             unsigned OffsetVGPR,
-                                             unsigned MovRelOp,
-                                             unsigned Dst,
-                                             unsigned Src0) const;
-  // If you add or remove instructions from this function, you will
+  unsigned buildExtractSubReg(MachineBasicBlock::iterator MI,
+                              MachineRegisterInfo &MRI,
+                              MachineOperand &SuperReg,
+                              const TargetRegisterClass *SuperRC,
+                              unsigned SubIdx,
+                              const TargetRegisterClass *SubRC) const;
+  MachineOperand buildExtractSubRegOrImm(MachineBasicBlock::iterator MI,
+                                         MachineRegisterInfo &MRI,
+                                         MachineOperand &SuperReg,
+                                         const TargetRegisterClass *SuperRC,
+                                         unsigned SubIdx,
+                                         const TargetRegisterClass *SubRC) const;
+
+  unsigned split64BitImm(SmallVectorImpl<MachineInstr *> &Worklist,
+                         MachineBasicBlock::iterator MI,
+                         MachineRegisterInfo &MRI,
+                         const TargetRegisterClass *RC,
+                         const MachineOperand &Op) const;
+
+  void splitScalar64BitUnaryOp(SmallVectorImpl<MachineInstr *> &Worklist,
+                               MachineInstr *Inst, unsigned Opcode) const;
+
+  void splitScalar64BitBinaryOp(SmallVectorImpl<MachineInstr *> &Worklist,
+                                MachineInstr *Inst, unsigned Opcode) const;
+
+  void splitScalar64BitBCNT(SmallVectorImpl<MachineInstr *> &Worklist,
+                            MachineInstr *Inst) const;
+
+  void addDescImplicitUseDef(const MCInstrDesc &Desc, MachineInstr *MI) const;
 
 public:
-  explicit SIInstrInfo(AMDGPUTargetMachine &tm);
+  explicit SIInstrInfo(const AMDGPUSubtarget &st);
+
+  const SIRegisterInfo &getRegisterInfo() const override {
+    return RI;
+  }
+
+  bool areLoadsFromSameBasePtr(SDNode *Load1, SDNode *Load2,
+                               int64_t &Offset1,
+                               int64_t &Offset2) const override;
 
-  const SIRegisterInfo &getRegisterInfo() const;
+  bool getLdStBaseRegImmOfs(MachineInstr *LdSt,
+                            unsigned &BaseReg, unsigned &Offset,
+                            const TargetRegisterInfo *TRI) const final;
 
-  virtual void copyPhysReg(MachineBasicBlock &MBB,
-                           MachineBasicBlock::iterator MI, DebugLoc DL,
-                           unsigned DestReg, unsigned SrcReg,
-                           bool KillSrc) const;
+  void copyPhysReg(MachineBasicBlock &MBB,
+                   MachineBasicBlock::iterator MI, DebugLoc DL,
+                   unsigned DestReg, unsigned SrcReg,
+                   bool KillSrc) const override;
 
   void storeRegToStackSlot(MachineBasicBlock &MBB,
                            MachineBasicBlock::iterator MI,
                            unsigned SrcReg, bool isKill, int FrameIndex,
                            const TargetRegisterClass *RC,
-                           const TargetRegisterInfo *TRI) const;
+                           const TargetRegisterInfo *TRI) const override;
 
   void loadRegFromStackSlot(MachineBasicBlock &MBB,
                             MachineBasicBlock::iterator MI,
                             unsigned DestReg, int FrameIndex,
                             const TargetRegisterClass *RC,
-                            const TargetRegisterInfo *TRI) const;
+                            const TargetRegisterInfo *TRI) const override;
+
+  bool expandPostRAPseudo(MachineBasicBlock::iterator MI) const override;
 
   unsigned commuteOpcode(unsigned Opcode) const;
 
-  virtual MachineInstr *commuteInstruction(MachineInstr *MI,
-                                           bool NewMI=false) const;
+  MachineInstr *commuteInstruction(MachineInstr *MI,
+                                   bool NewMI=false) const override;
 
-  virtual unsigned getIEQOpcode() const {
-    llvm_unreachable("Unimplemented");
-  }
+  bool isTriviallyReMaterializable(const MachineInstr *MI,
+                                   AliasAnalysis *AA = nullptr) const;
 
   MachineInstr *buildMovInstr(MachineBasicBlock *MBB,
                               MachineBasicBlock::iterator I,
-                              unsigned DstReg, unsigned SrcReg) const;
-  virtual bool isMov(unsigned Opcode) const;
+                              unsigned DstReg, unsigned SrcReg) const override;
+  bool isMov(unsigned Opcode) const override;
 
-  virtual bool isSafeToMoveRegClassDefs(const TargetRegisterClass *RC) const;
+  bool isSafeToMoveRegClassDefs(const TargetRegisterClass *RC) const override;
   bool isDS(uint16_t Opcode) const;
-  int isMIMG(uint16_t Opcode) const;
-  int isSMRD(uint16_t Opcode) const;
+  bool isMIMG(uint16_t Opcode) const;
+  bool isSMRD(uint16_t Opcode) const;
+  bool isMUBUF(uint16_t Opcode) const;
+  bool isMTBUF(uint16_t Opcode) const;
   bool isVOP1(uint16_t Opcode) const;
   bool isVOP2(uint16_t Opcode) const;
   bool isVOP3(uint16_t Opcode) const;
   bool isVOPC(uint16_t Opcode) const;
+  bool isInlineConstant(const APInt &Imm) const;
   bool isInlineConstant(const MachineOperand &MO) const;
   bool isLiteralConstant(const MachineOperand &MO) const;
 
-  virtual bool verifyInstruction(const MachineInstr *MI,
-                                 StringRef &ErrInfo) const;
+  bool isImmOperandLegal(const MachineInstr *MI, unsigned OpNo,
+                         const MachineOperand &MO) const;
+
+  /// \brief Return true if the given offset Size in bytes can be folded into
+  /// the immediate offsets of a memory instruction for the given address space.
+  static bool canFoldOffset(unsigned OffsetSize, unsigned AS) LLVM_READNONE;
+
+  /// \brief Return true if this 64-bit VALU instruction has a 32-bit encoding.
+  /// This function will return false if you pass it a 32-bit instruction.
+  bool hasVALU32BitEncoding(unsigned Opcode) const;
+
+  /// \brief Return true if this instruction has any modifiers.
+  ///  e.g. src[012]_mod, omod, clamp.
+  bool hasModifiers(unsigned Opcode) const;
+  bool verifyInstruction(const MachineInstr *MI,
+                         StringRef &ErrInfo) const override;
 
   bool isSALUInstr(const MachineInstr &MI) const;
   static unsigned getVALUOp(const MachineInstr &MI);
+
   bool isSALUOpSupportedOnVALU(const MachineInstr &MI) const;
 
   /// \brief Return the correct register class for \p OpNo.  For target-specific
@@ -110,43 +161,70 @@ public:
   /// instead of MOV.
   void legalizeOpWithMove(MachineInstr *MI, unsigned OpIdx) const;
 
+  /// \brief Check if \p MO is a legal operand if it was the \p OpIdx Operand
+  /// for \p MI.
+  bool isOperandLegal(const MachineInstr *MI, unsigned OpIdx,
+                      const MachineOperand *MO = nullptr) const;
+
   /// \brief Legalize all operands in this instruction.  This function may
   /// create new instruction and insert them before \p MI.
   void legalizeOperands(MachineInstr *MI) const;
 
+  /// \brief Split an SMRD instruction into two smaller loads of half the
+  //  size storing the results in \p Lo and \p Hi.
+  void splitSMRD(MachineInstr *MI, const TargetRegisterClass *HalfRC,
+                 unsigned HalfImmOp, unsigned HalfSGPROp,
+                 MachineInstr *&Lo, MachineInstr *&Hi) const;
+
+  void moveSMRDToVALU(MachineInstr *MI, MachineRegisterInfo &MRI) const;
+
   /// \brief Replace this instruction's opcode with the equivalent VALU
   /// opcode.  This function will also move the users of \p MI to the
   /// VALU if necessary.
   void moveToVALU(MachineInstr &MI) const;
 
-  virtual unsigned calculateIndirectAddress(unsigned RegIndex,
-                                            unsigned Channel) const;
+  unsigned calculateIndirectAddress(unsigned RegIndex,
+                                    unsigned Channel) const override;
 
-  virtual const TargetRegisterClass *getIndirectAddrRegClass() const;
+  const TargetRegisterClass *getIndirectAddrRegClass() const override;
 
-  virtual MachineInstrBuilder buildIndirectWrite(MachineBasicBlock *MBB,
-                                                 MachineBasicBlock::iterator I,
-                                                 unsigned ValueReg,
-                                                 unsigned Address,
-                                                 unsigned OffsetReg) const;
+  MachineInstrBuilder buildIndirectWrite(MachineBasicBlock *MBB,
+                                         MachineBasicBlock::iterator I,
+                                         unsigned ValueReg,
+                                         unsigned Address,
+                                         unsigned OffsetReg) const override;
 
-  virtual MachineInstrBuilder buildIndirectRead(MachineBasicBlock *MBB,
-                                                MachineBasicBlock::iterator I,
-                                                unsigned ValueReg,
-                                                unsigned Address,
-                                                unsigned OffsetReg) const;
+  MachineInstrBuilder buildIndirectRead(MachineBasicBlock *MBB,
+                                        MachineBasicBlock::iterator I,
+                                        unsigned ValueReg,
+                                        unsigned Address,
+                                        unsigned OffsetReg) const override;
   void reserveIndirectRegisters(BitVector &Reserved,
                                 const MachineFunction &MF) const;
 
   void LoadM0(MachineInstr *MoveRel, MachineBasicBlock::iterator I,
               unsigned SavReg, unsigned IndexReg) const;
+
+  void insertNOPs(MachineBasicBlock::iterator MI, int Count) const;
+
+  /// \brief Returns the operand named \p Op.  If \p MI does not have an
+  /// operand named \c Op, this function returns nullptr.
+  MachineOperand *getNamedOperand(MachineInstr &MI, unsigned OperandName) const;
 };
 
 namespace AMDGPU {
 
   int getVOPe64(uint16_t Opcode);
+  int getVOPe32(uint16_t Opcode);
   int getCommuteRev(uint16_t Opcode);
   int getCommuteOrig(uint16_t Opcode);
+  int getMCOpcode(uint16_t Opcode, unsigned Gen);
+  int getAddr64Inst(uint16_t Opcode);
+  int getAtomicRetOp(uint16_t Opcode);
+  int getAtomicNoRetOp(uint16_t Opcode);
+
+  const uint64_t RSRC_DATA_FORMAT = 0xf00000000000LL;
+  const uint64_t RSRC_TID_ENABLE = 1LL << 55;
 
 } // End namespace AMDGPU
 
@@ -161,4 +239,11 @@ namespace SIInstrFlags {
   };
 }
 
-#endif //SIINSTRINFO_H
+namespace SISrcMods {
+  enum {
+   NEG = 1 << 0,
+   ABS = 1 << 1
+  };
+}
+
+#endif