#ifndef XCOREISELLOWERING_H
#define XCOREISELLOWERING_H
+#include "XCore.h"
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/Target/TargetLowering.h"
-#include "XCore.h"
namespace llvm {
-
+
// Forward delcarations
class XCoreSubtarget;
class XCoreTargetMachine;
-
+
namespace XCoreISD {
enum NodeType {
// Start the numbering where the builtin ops and target ops leave off.
- FIRST_NUMBER = ISD::BUILTIN_OP_END+XCore::INSTRUCTION_LIST_END,
+ FIRST_NUMBER = ISD::BUILTIN_OP_END,
// Branch and link (call)
BL,
// dp relative address
DPRelativeWrapper,
-
+
// cp relative address
CPRelativeWrapper,
-
+
+ // Load word from stack
+ LDWSP,
+
// Store word to stack
STWSP,
// Corresponds to retsp instruction
RETSP,
-
+
// Corresponds to LADD instruction
LADD,
// Corresponds to LSUB instruction
- LSUB
+ LSUB,
+
+ // Corresponds to LMUL instruction
+ LMUL,
+
+ // Corresponds to MACCU instruction
+ MACCU,
+
+ // Corresponds to MACCS instruction
+ MACCS,
+
+ // Corresponds to CRC8 instruction
+ CRC8,
+
+ // Jumptable branch.
+ BR_JT,
+
+ // Jumptable branch using long branches for each entry.
+ BR_JT32,
+
+ // Offset from frame pointer to the first (possible) on-stack argument
+ FRAME_TO_ARGS_OFFSET,
+
+ // Exception handler return. The stack is restored to the first
+ // followed by a jump to the second argument.
+ EH_RETURN,
+
+ // Memory barrier.
+ MEMBARRIER
};
}
//===--------------------------------------------------------------------===//
// TargetLowering Implementation
//===--------------------------------------------------------------------===//
- class XCoreTargetLowering : public TargetLowering
+ class XCoreTargetLowering : public TargetLowering
{
public:
explicit XCoreTargetLowering(XCoreTargetMachine &TM);
+ using TargetLowering::isZExtFree;
+ virtual bool isZExtFree(SDValue Val, EVT VT2) const;
+
+
+ virtual unsigned getJumpTableEncoding() const;
+ virtual MVT getScalarShiftAmountTy(EVT LHSTy) const { return MVT::i32; }
+
/// LowerOperation - Provide custom lowering hooks for some operations.
- virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG);
+ 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);
+ SelectionDAG &DAG) const;
- /// getTargetNodeName - This method returns the name of a target specific
+ /// getTargetNodeName - This method returns the name of a target specific
// DAG node.
virtual const char *getTargetNodeName(unsigned Opcode) const;
-
- virtual MachineBasicBlock *EmitInstrWithCustomInserter(MachineInstr *MI,
- MachineBasicBlock *MBB) const;
- virtual bool isLegalAddressingMode(const AddrMode &AM,
- const Type *Ty) const;
+ virtual MachineBasicBlock *
+ EmitInstrWithCustomInserter(MachineInstr *MI,
+ MachineBasicBlock *MBB) const;
- /// getFunctionAlignment - Return the Log2 alignment of this function.
- virtual unsigned getFunctionAlignment(const Function *F) const;
+ virtual bool isLegalAddressingMode(const AddrMode &AM,
+ Type *Ty) const;
private:
const XCoreTargetMachine &TM;
const XCoreSubtarget &Subtarget;
-
+
// Lower Operand helpers
- SDValue LowerCCCArguments(SDValue Op, SelectionDAG &DAG);
- SDValue LowerCCCCallTo(SDValue Op, SelectionDAG &DAG, unsigned CC);
- SDNode *LowerCallResult(SDValue Chain, SDValue InFlag, CallSDNode*TheCall,
- unsigned CallingConv, SelectionDAG &DAG);
- SDValue getReturnAddressFrameIndex(SelectionDAG &DAG);
- SDValue getGlobalAddressWrapper(SDValue GA, GlobalValue *GV,
- SelectionDAG &DAG);
+ SDValue LowerCCCArguments(SDValue Chain,
+ CallingConv::ID CallConv,
+ bool isVarArg,
+ const SmallVectorImpl<ISD::InputArg> &Ins,
+ SDLoc dl, SelectionDAG &DAG,
+ SmallVectorImpl<SDValue> &InVals) const;
+ SDValue LowerCCCCallTo(SDValue Chain, SDValue Callee,
+ CallingConv::ID CallConv, bool isVarArg,
+ bool isTailCall,
+ const SmallVectorImpl<ISD::OutputArg> &Outs,
+ const SmallVectorImpl<SDValue> &OutVals,
+ const SmallVectorImpl<ISD::InputArg> &Ins,
+ SDLoc dl, SelectionDAG &DAG,
+ SmallVectorImpl<SDValue> &InVals) const;
+ SDValue getReturnAddressFrameIndex(SelectionDAG &DAG) const;
+ SDValue getGlobalAddressWrapper(SDValue GA, const GlobalValue *GV,
+ SelectionDAG &DAG) const;
+ SDValue lowerLoadWordFromAlignedBasePlusOffset(SDLoc DL, SDValue Chain,
+ SDValue Base, int64_t Offset,
+ SelectionDAG &DAG) const;
// Lower Operand specifics
- SDValue LowerLOAD(SDValue Op, SelectionDAG &DAG);
- SDValue LowerSTORE(SDValue Op, SelectionDAG &DAG);
- SDValue LowerRET(SDValue Op, SelectionDAG &DAG);
- SDValue LowerCALL(SDValue Op, SelectionDAG &DAG);
- SDValue LowerFORMAL_ARGUMENTS(SDValue Op, SelectionDAG &DAG);
- SDValue LowerGlobalAddress(SDValue Op, SelectionDAG &DAG);
- SDValue LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG);
- SDValue LowerConstantPool(SDValue Op, SelectionDAG &DAG);
- SDValue LowerJumpTable(SDValue Op, SelectionDAG &DAG);
- SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG);
- SDValue LowerVAARG(SDValue Op, SelectionDAG &DAG);
- SDValue LowerVASTART(SDValue Op, SelectionDAG &DAG);
- SDValue LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG);
-
+ SDValue LowerLOAD(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerSTORE(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerEH_RETURN(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerGlobalAddress(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerBlockAddress(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerConstantPool(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerBR_JT(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerVAARG(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerVASTART(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerUMUL_LOHI(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerSMUL_LOHI(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerFRAME_TO_ARGS_OFFSET(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerRETURNADDR(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerINIT_TRAMPOLINE(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerADJUST_TRAMPOLINE(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerINTRINSIC_WO_CHAIN(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerATOMIC_FENCE(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerATOMIC_LOAD(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerATOMIC_STORE(SDValue Op, SelectionDAG &DAG) const;
+
// Inline asm support
- std::vector<unsigned>
- getRegClassForInlineAsmConstraint(const std::string &Constraint,
- MVT VT) const;
-
+ std::pair<unsigned, const TargetRegisterClass*>
+ getRegForInlineAsmConstraint(const std::string &Constraint,
+ MVT VT) const;
+
// Expand specifics
- SDValue ExpandADDSUB(SDNode *Op, SelectionDAG &DAG);
+ SDValue TryExpandADDWithMul(SDNode *Op, SelectionDAG &DAG) const;
+ SDValue ExpandADDSUB(SDNode *Op, SelectionDAG &DAG) const;
+
+ virtual SDValue PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const;
+
+ virtual void computeMaskedBitsForTargetNode(const SDValue Op,
+ APInt &KnownZero,
+ APInt &KnownOne,
+ const SelectionDAG &DAG,
+ unsigned Depth = 0) const;
+
+ virtual SDValue
+ LowerFormalArguments(SDValue Chain,
+ CallingConv::ID CallConv,
+ bool isVarArg,
+ const SmallVectorImpl<ISD::InputArg> &Ins,
+ SDLoc dl, SelectionDAG &DAG,
+ SmallVectorImpl<SDValue> &InVals) const;
+
+ virtual SDValue
+ LowerCall(TargetLowering::CallLoweringInfo &CLI,
+ SmallVectorImpl<SDValue> &InVals) const;
+
+ virtual SDValue
+ LowerReturn(SDValue Chain,
+ CallingConv::ID CallConv, bool isVarArg,
+ const SmallVectorImpl<ISD::OutputArg> &Outs,
+ const SmallVectorImpl<SDValue> &OutVals,
+ SDLoc dl, SelectionDAG &DAG) const;
+
+ virtual bool
+ CanLowerReturn(CallingConv::ID CallConv, MachineFunction &MF,
+ bool isVarArg,
+ const SmallVectorImpl<ISD::OutputArg> &ArgsFlags,
+ LLVMContext &Context) const;
};
}
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