diff options
Diffstat (limited to 'lib/Target/Mips/MipsISelLowering.h')
| -rw-r--r-- | lib/Target/Mips/MipsISelLowering.h | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/lib/Target/Mips/MipsISelLowering.h b/lib/Target/Mips/MipsISelLowering.h index 95ea8fa..43f97e8 100644 --- a/lib/Target/Mips/MipsISelLowering.h +++ b/lib/Target/Mips/MipsISelLowering.h @@ -17,6 +17,7 @@ #include "Mips.h" #include "MipsSubtarget.h" +#include "llvm/CodeGen/CallingConvLower.h" #include "llvm/CodeGen/SelectionDAG.h" #include "llvm/Target/TargetLowering.h" @@ -29,6 +30,9 @@ namespace llvm { // Jump and link (call) JmpLink, + // Tail call + TailCall, + // Get the Higher 16 bits from a 32-bit immediate // No relation with Mips Hi register Hi, @@ -81,6 +85,47 @@ namespace llvm { Ext, Ins, + // EXTR.W instrinsic nodes. + EXTP, + EXTPDP, + EXTR_S_H, + EXTR_W, + EXTR_R_W, + EXTR_RS_W, + SHILO, + MTHLIP, + + // DPA.W intrinsic nodes. + MULSAQ_S_W_PH, + MAQ_S_W_PHL, + MAQ_S_W_PHR, + MAQ_SA_W_PHL, + MAQ_SA_W_PHR, + DPAU_H_QBL, + DPAU_H_QBR, + DPSU_H_QBL, + DPSU_H_QBR, + DPAQ_S_W_PH, + DPSQ_S_W_PH, + DPAQ_SA_L_W, + DPSQ_SA_L_W, + DPA_W_PH, + DPS_W_PH, + DPAQX_S_W_PH, + DPAQX_SA_W_PH, + DPAX_W_PH, + DPSX_W_PH, + DPSQX_S_W_PH, + DPSQX_SA_W_PH, + MULSA_W_PH, + + MULT, + MULTU, + MADD_DSP, + MADDU_DSP, + MSUB_DSP, + MSUBU_DSP, + // Load/Store Left/Right nodes. LWL = ISD::FIRST_TARGET_MEMORY_OPCODE, LWR, @@ -96,6 +141,7 @@ namespace llvm { //===--------------------------------------------------------------------===// // TargetLowering Implementation //===--------------------------------------------------------------------===// + class MipsFunctionInfo; class MipsTargetLowering : public TargetLowering { public: @@ -105,9 +151,19 @@ namespace llvm { virtual bool allowsUnalignedMemoryAccesses (EVT VT) const; + virtual void LowerOperationWrapper(SDNode *N, + SmallVectorImpl<SDValue> &Results, + SelectionDAG &DAG) const; + /// LowerOperation - Provide custom lowering hooks for some operations. virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const; + /// ReplaceNodeResults - Replace the results of node with an illegal result + /// type with new values built out of custom code. + /// + virtual void ReplaceNodeResults(SDNode *N, SmallVectorImpl<SDValue>&Results, + SelectionDAG &DAG) const; + /// getTargetNodeName - This method returns the name of a target specific // DAG node. virtual const char *getTargetNodeName(unsigned Opcode) const; @@ -117,6 +173,69 @@ namespace llvm { virtual SDValue PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const; private: + + /// ByValArgInfo - Byval argument information. + struct ByValArgInfo { + unsigned FirstIdx; // Index of the first register used. + unsigned NumRegs; // Number of registers used for this argument. + unsigned Address; // Offset of the stack area used to pass this argument. + + ByValArgInfo() : FirstIdx(0), NumRegs(0), Address(0) {} + }; + + /// MipsCC - This class provides methods used to analyze formal and call + /// arguments and inquire about calling convention information. + class MipsCC { + public: + MipsCC(CallingConv::ID CallConv, bool IsVarArg, bool IsO32, + CCState &Info); + + void analyzeCallOperands(const SmallVectorImpl<ISD::OutputArg> &Outs); + void analyzeFormalArguments(const SmallVectorImpl<ISD::InputArg> &Ins); + void handleByValArg(unsigned ValNo, MVT ValVT, MVT LocVT, + CCValAssign::LocInfo LocInfo, + ISD::ArgFlagsTy ArgFlags); + + const CCState &getCCInfo() const { return CCInfo; } + + /// hasByValArg - Returns true if function has byval arguments. + bool hasByValArg() const { return !ByValArgs.empty(); } + + /// useRegsForByval - Returns true if the calling convention allows the + /// use of registers to pass byval arguments. + bool useRegsForByval() const { return UseRegsForByval; } + + /// regSize - Size (in number of bits) of integer registers. + unsigned regSize() const { return RegSize; } + + /// numIntArgRegs - Number of integer registers available for calls. + unsigned numIntArgRegs() const { return NumIntArgRegs; } + + /// reservedArgArea - The size of the area the caller reserves for + /// register arguments. This is 16-byte if ABI is O32. + unsigned reservedArgArea() const { return ReservedArgArea; } + + /// intArgRegs - Pointer to array of integer registers. + const uint16_t *intArgRegs() const { return IntArgRegs; } + + typedef SmallVector<ByValArgInfo, 2>::const_iterator byval_iterator; + byval_iterator byval_begin() const { return ByValArgs.begin(); } + byval_iterator byval_end() const { return ByValArgs.end(); } + + private: + void allocateRegs(ByValArgInfo &ByVal, unsigned ByValSize, + unsigned Align); + + CCState &CCInfo; + bool UseRegsForByval; + unsigned RegSize; + unsigned NumIntArgRegs; + unsigned ReservedArgArea; + const uint16_t *IntArgRegs, *ShadowRegs; + SmallVector<ByValArgInfo, 2> ByValArgs; + llvm::CCAssignFn *FixedFn, *VarFn; + }; + // Subtarget Info const MipsSubtarget *Subtarget; @@ -151,6 +270,39 @@ namespace llvm { bool IsSRA) const; SDValue LowerLOAD(SDValue Op, SelectionDAG &DAG) const; SDValue LowerSTORE(SDValue Op, SelectionDAG &DAG) const; + SDValue LowerINTRINSIC_WO_CHAIN(SDValue Op, SelectionDAG &DAG) const; + SDValue LowerINTRINSIC_W_CHAIN(SDValue Op, SelectionDAG &DAG) const; + SDValue LowerADD(SDValue Op, SelectionDAG &DAG) const; + + /// IsEligibleForTailCallOptimization - Check whether the call is eligible + /// for tail call optimization. + bool IsEligibleForTailCallOptimization(const MipsCC &MipsCCInfo, + unsigned NextStackOffset, + const MipsFunctionInfo& FI) const; + + /// copyByValArg - Copy argument registers which were used to pass a byval + /// argument to the stack. Create a stack frame object for the byval + /// argument. + void copyByValRegs(SDValue Chain, DebugLoc DL, + std::vector<SDValue> &OutChains, SelectionDAG &DAG, + const ISD::ArgFlagsTy &Flags, + SmallVectorImpl<SDValue> &InVals, + const Argument *FuncArg, + const MipsCC &CC, const ByValArgInfo &ByVal) const; + + /// passByValArg - Pass a byval argument in registers or on stack. + void passByValArg(SDValue Chain, DebugLoc DL, + SmallVector<std::pair<unsigned, SDValue>, 16> &RegsToPass, + SmallVector<SDValue, 8> &MemOpChains, SDValue StackPtr, + MachineFrameInfo *MFI, SelectionDAG &DAG, SDValue Arg, + const MipsCC &CC, const ByValArgInfo &ByVal, + const ISD::ArgFlagsTy &Flags, bool isLittle) const; + + /// writeVarArgRegs - Write variable function arguments passed in registers + /// to the stack. Also create a stack frame object for the first variable + /// argument. + void writeVarArgRegs(std::vector<SDValue> &OutChains, const MipsCC &CC, + SDValue Chain, DebugLoc DL, SelectionDAG &DAG) const; virtual SDValue LowerFormalArguments(SDValue Chain, @@ -159,10 +311,20 @@ namespace llvm { DebugLoc dl, SelectionDAG &DAG, SmallVectorImpl<SDValue> &InVals) const; + SDValue passArgOnStack(SDValue StackPtr, unsigned Offset, SDValue Chain, + SDValue Arg, DebugLoc DL, bool IsTailCall, + SelectionDAG &DAG) const; + virtual SDValue LowerCall(TargetLowering::CallLoweringInfo &CLI, SmallVectorImpl<SDValue> &InVals) const; + virtual bool + CanLowerReturn(CallingConv::ID CallConv, MachineFunction &MF, + bool isVarArg, + const SmallVectorImpl<ISD::OutputArg> &Outs, + LLVMContext &Context) const; + virtual SDValue LowerReturn(SDValue Chain, CallingConv::ID CallConv, bool isVarArg, @@ -209,6 +371,8 @@ namespace llvm { virtual unsigned getJumpTableEncoding() const; + MachineBasicBlock *EmitBPOSGE32(MachineInstr *MI, + MachineBasicBlock *BB) const; MachineBasicBlock *EmitAtomicBinary(MachineInstr *MI, MachineBasicBlock *BB, unsigned Size, unsigned BinOpcode, bool Nand = false) const; MachineBasicBlock *EmitAtomicBinaryPartword(MachineInstr *MI, |
