//
// The LLVM Compiler Infrastructure
//
-// This file was developed by Evan Cheng and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#ifndef ARMISELLOWERING_H
#define ARMISELLOWERING_H
+#include "ARMSubtarget.h"
#include "llvm/Target/TargetLowering.h"
#include "llvm/CodeGen/SelectionDAG.h"
+#include "llvm/CodeGen/CallingConvLower.h"
#include <vector>
namespace llvm {
class ARMConstantPoolValue;
- class ARMSubtarget;
namespace ARMISD {
// ARM Specific DAG Nodes
enum NodeType {
// Start the numbering where the builting ops and target ops leave off.
- FIRST_NUMBER = ISD::BUILTIN_OP_END+ARM::INSTRUCTION_LIST_END,
+ FIRST_NUMBER = ISD::BUILTIN_OP_END,
Wrapper, // Wrapper - A wrapper node for TargetConstantPool,
// TargetExternalSymbol, and TargetGlobalAddress.
WrapperJT, // WrapperJT - A wrapper node for TargetJumpTable
CALL, // Function call.
+ CALL_PRED, // Function call that's predicable.
CALL_NOLINK, // Function call with branch not branch-and-link.
tCALL, // Thumb function call.
BRCOND, // Conditional branch.
PIC_ADD, // Add with a PC operand and a PIC label.
CMP, // ARM compare instructions.
+ CMPNZ, // ARM compare that uses only N or Z flags.
CMPFP, // ARM VFP compare instruction, sets FPSCR.
CMPFPw0, // ARM VFP compare against zero instruction, sets FPSCR.
FMSTAT, // ARM fmstat instruction.
SITOF, // sint to FP within a FP register.
UITOF, // uint to FP within a FP register.
- MULHILOU, // Lo,Hi = umul LHS, RHS.
- MULHILOS, // Lo,Hi = smul LHS, RHS.
-
SRL_FLAG, // V,Flag = srl_flag X -> srl X, 1 + save carry out.
SRA_FLAG, // V,Flag = sra_flag X -> sra X, 1 + save carry out.
RRX, // V = RRX X, Flag -> srl X, 1 + shift in carry flag.
FMRRD, // double to two gprs.
- FMDRR // Two gprs to double.
+ FMDRR, // Two gprs to double.
+
+ THREAD_POINTER
};
}
class ARMTargetLowering : public TargetLowering {
int VarArgsFrameIndex; // FrameIndex for start of varargs area.
public:
- ARMTargetLowering(TargetMachine &TM);
+ explicit ARMTargetLowering(TargetMachine &TM);
+
+ virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG);
+
+ /// 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);
- virtual SDOperand LowerOperation(SDOperand Op, SelectionDAG &DAG);
+ virtual SDValue PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const;
+
virtual const char *getTargetNodeName(unsigned Opcode) const;
- virtual MachineBasicBlock *InsertAtEndOfBasicBlock(MachineInstr *MI,
- MachineBasicBlock *MBB);
-
- /// isLegalAddressExpression - Return true if the binary expression made up
- /// of specified opcode, operands, and type can be folded into target
- /// addressing mode for load / store of the given type.
- virtual bool isLegalAddressExpression(unsigned Opc, Value *Op0, Value *Op1,
- const Type *Ty) const;
-
- /// isLegalAddressImmediate - Return true if the integer value can be used
- /// as the offset of the target addressing mode for load / store of the
- /// given type.
- virtual bool isLegalAddressImmediate(int64_t V, const Type *Ty) const;
-
- /// isLegalAddressImmediate - Return true if the GlobalValue can be used as
- /// the offset of the target addressing mode.
- virtual bool isLegalAddressImmediate(GlobalValue *GV) const;
-
- /// isLegalAddressScale - Return true if the integer value can be used as
- /// the scale of the target addressing mode for load / store of the given
- /// type.
- virtual bool isLegalAddressScale(int64_t S, const Type *Ty) const;
-
- /// isLegalAddressScaleAndImm - Return true if S works for
- /// IsLegalAddressScale and V works for isLegalAddressImmediate _and_
- /// both can be applied simultaneously to the same instruction.
- virtual bool isLegalAddressScaleAndImm(int64_t S, int64_t V,
- const Type *Ty) const;
-
- /// isLegalAddressScaleAndImm - Return true if S works for
- /// IsLegalAddressScale and GV works for isLegalAddressImmediate _and_
- /// both can be applied simultaneously to the same instruction.
- virtual bool isLegalAddressScaleAndImm(int64_t S, GlobalValue *GV,
- const Type *Ty) const;
+ virtual MachineBasicBlock *EmitInstrWithCustomInserter(MachineInstr *MI,
+ MachineBasicBlock *MBB) const;
+ /// isLegalAddressingMode - Return true if the addressing mode represented
+ /// by AM is legal for this target, for a load/store of the specified type.
+ virtual bool isLegalAddressingMode(const AddrMode &AM, const Type *Ty)const;
+
/// getPreIndexedAddressParts - returns true by value, base pointer and
/// offset pointer and addressing mode by reference if the node's address
/// can be legally represented as pre-indexed load / store address.
- virtual bool getPreIndexedAddressParts(SDNode *N, SDOperand &Base,
- SDOperand &Offset,
+ virtual bool getPreIndexedAddressParts(SDNode *N, SDValue &Base,
+ SDValue &Offset,
ISD::MemIndexedMode &AM,
- SelectionDAG &DAG);
+ SelectionDAG &DAG) const;
/// getPostIndexedAddressParts - returns true by value, base pointer and
/// offset pointer and addressing mode by reference if this node can be
/// combined with a load / store to form a post-indexed load / store.
virtual bool getPostIndexedAddressParts(SDNode *N, SDNode *Op,
- SDOperand &Base, SDOperand &Offset,
+ SDValue &Base, SDValue &Offset,
ISD::MemIndexedMode &AM,
- SelectionDAG &DAG);
+ SelectionDAG &DAG) const;
- virtual void computeMaskedBitsForTargetNode(const SDOperand Op,
- uint64_t Mask,
- uint64_t &KnownZero,
- uint64_t &KnownOne,
+ virtual void computeMaskedBitsForTargetNode(const SDValue Op,
+ const APInt &Mask,
+ APInt &KnownZero,
+ APInt &KnownOne,
+ const SelectionDAG &DAG,
unsigned Depth) const;
- ConstraintType getConstraintType(char ConstraintLetter) const;
+ ConstraintType getConstraintType(const std::string &Constraint) const;
std::pair<unsigned, const TargetRegisterClass*>
getRegForInlineAsmConstraint(const std::string &Constraint,
- MVT::ValueType VT) const;
+ MVT VT) const;
std::vector<unsigned>
getRegClassForInlineAsmConstraint(const std::string &Constraint,
- MVT::ValueType VT) const;
+ MVT VT) const;
+
+ /// LowerAsmOperandForConstraint - Lower the specified operand into the Ops
+ /// vector. If it is invalid, don't add anything to Ops. If hasMemory is
+ /// true it means one of the asm constraint of the inline asm instruction
+ /// being processed is 'm'.
+ virtual void LowerAsmOperandForConstraint(SDValue Op,
+ char ConstraintLetter,
+ bool hasMemory,
+ std::vector<SDValue> &Ops,
+ SelectionDAG &DAG) const;
+
+ virtual const ARMSubtarget* getSubtarget() {
+ return Subtarget;
+ }
+
private:
/// Subtarget - Keep a pointer to the ARMSubtarget around so that we can
/// make the right decision when generating code for different targets.
///
unsigned ARMPCLabelIndex;
- SDOperand LowerCALL(SDOperand Op, SelectionDAG &DAG);
- SDOperand LowerGlobalAddress(SDOperand Op, SelectionDAG &DAG);
- SDOperand LowerFORMAL_ARGUMENTS(SDOperand Op, SelectionDAG &DAG);
- SDOperand LowerBR_JT(SDOperand Op, SelectionDAG &DAG);
+ SDValue LowerMemOpCallTo(CallSDNode *TheCall, SelectionDAG &DAG,
+ const SDValue &StackPtr, const CCValAssign &VA,
+ SDValue Chain, SDValue Arg, ISD::ArgFlagsTy Flags);
+ SDNode *LowerCallResult(SDValue Chain, SDValue InFlag, CallSDNode *TheCall,
+ unsigned CallingConv, SelectionDAG &DAG);
+ SDValue LowerCALL(SDValue Op, SelectionDAG &DAG);
+ SDValue LowerRET(SDValue Op, SelectionDAG &DAG);
+ SDValue LowerGlobalAddressDarwin(SDValue Op, SelectionDAG &DAG);
+ SDValue LowerGlobalAddressELF(SDValue Op, SelectionDAG &DAG);
+ SDValue LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG);
+ SDValue LowerToTLSGeneralDynamicModel(GlobalAddressSDNode *GA,
+ SelectionDAG &DAG);
+ SDValue LowerToTLSExecModels(GlobalAddressSDNode *GA,
+ SelectionDAG &DAG);
+ SDValue LowerGLOBAL_OFFSET_TABLE(SDValue Op, SelectionDAG &DAG);
+ SDValue LowerFORMAL_ARGUMENTS(SDValue Op, SelectionDAG &DAG);
+ SDValue LowerBR_JT(SDValue Op, SelectionDAG &DAG);
+
+ SDValue EmitTargetCodeForMemcpy(SelectionDAG &DAG, DebugLoc dl,
+ SDValue Chain,
+ SDValue Dst, SDValue Src,
+ SDValue Size, unsigned Align,
+ bool AlwaysInline,
+ const Value *DstSV, uint64_t DstSVOff,
+ const Value *SrcSV, uint64_t SrcSVOff);
};
}
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