1 //==-- MSP430ISelLowering.h - MSP430 DAG Lowering Interface ------*- C++ -*-==//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the interfaces that MSP430 uses to lower LLVM code into a
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_TARGET_MSP430_ISELLOWERING_H
16 #define LLVM_TARGET_MSP430_ISELLOWERING_H
19 #include "llvm/CodeGen/SelectionDAG.h"
20 #include "llvm/Target/TargetLowering.h"
25 FIRST_NUMBER = ISD::BUILTIN_OP_END,
27 /// Return with a flag operand. Operand 0 is the chain operand.
30 /// Y = R{R,L}A X, rotate right (left) arithmetically
33 /// Y = RRC X, rotate right via carry
36 /// CALL - These operations represent an abstract call
37 /// instruction, which includes a bunch of information.
40 /// Wrapper - A wrapper node for TargetConstantPool, TargetExternalSymbol,
41 /// and TargetGlobalAddress.
44 /// CMP - Compare instruction.
47 /// SetCC. Operand 0 is condition code, and operand 1 is the flag
48 /// operand produced by a CMP instruction.
51 /// MSP430 conditional branches. Operand 0 is the chain operand, operand 1
52 /// is the block to branch if condition is true, operand 2 is the
53 /// condition code, and operand 3 is the flag operand produced by a CMP
57 /// SELECT_CC. Operand 0 and operand 1 are selection variable, operand 3
58 /// is condition code and operand 4 is flag operand.
63 class MSP430Subtarget;
64 class MSP430TargetMachine;
66 class MSP430TargetLowering : public TargetLowering {
68 explicit MSP430TargetLowering(MSP430TargetMachine &TM);
70 /// LowerOperation - Provide custom lowering hooks for some operations.
71 virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG);
73 /// getTargetNodeName - This method returns the name of a target specific
75 virtual const char *getTargetNodeName(unsigned Opcode) const;
77 /// getFunctionAlignment - Return the Log2 alignment of this function.
78 virtual unsigned getFunctionAlignment(const Function *F) const;
80 SDValue LowerShifts(SDValue Op, SelectionDAG &DAG);
81 SDValue LowerGlobalAddress(SDValue Op, SelectionDAG &DAG);
82 SDValue LowerExternalSymbol(SDValue Op, SelectionDAG &DAG);
83 SDValue LowerBR_CC(SDValue Op, SelectionDAG &DAG);
84 SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG);
85 SDValue LowerSIGN_EXTEND(SDValue Op, SelectionDAG &DAG);
87 MachineBasicBlock* EmitInstrWithCustomInserter(MachineInstr *MI,
88 MachineBasicBlock *BB) const;
91 SDValue LowerCCCCallTo(SDValue Chain, SDValue Callee,
92 unsigned CallConv, bool isVarArg,
94 const SmallVectorImpl<ISD::OutputArg> &Outs,
95 const SmallVectorImpl<ISD::InputArg> &Ins,
96 DebugLoc dl, SelectionDAG &DAG,
97 SmallVectorImpl<SDValue> &InVals);
99 SDValue LowerCCCArguments(SDValue Chain,
102 const SmallVectorImpl<ISD::InputArg> &Ins,
105 SmallVectorImpl<SDValue> &InVals);
107 SDValue LowerCallResult(SDValue Chain, SDValue InFlag,
108 unsigned CallConv, bool isVarArg,
109 const SmallVectorImpl<ISD::InputArg> &Ins,
110 DebugLoc dl, SelectionDAG &DAG,
111 SmallVectorImpl<SDValue> &InVals);
114 LowerFormalArguments(SDValue Chain,
115 unsigned CallConv, bool isVarArg,
116 const SmallVectorImpl<ISD::InputArg> &Ins,
117 DebugLoc dl, SelectionDAG &DAG,
118 SmallVectorImpl<SDValue> &InVals);
120 LowerCall(SDValue Chain, SDValue Callee,
121 unsigned CallConv, bool isVarArg, bool isTailCall,
122 const SmallVectorImpl<ISD::OutputArg> &Outs,
123 const SmallVectorImpl<ISD::InputArg> &Ins,
124 DebugLoc dl, SelectionDAG &DAG,
125 SmallVectorImpl<SDValue> &InVals);
128 LowerReturn(SDValue Chain,
129 unsigned CallConv, bool isVarArg,
130 const SmallVectorImpl<ISD::OutputArg> &Outs,
131 DebugLoc dl, SelectionDAG &DAG);
133 const MSP430Subtarget &Subtarget;
134 const MSP430TargetMachine &TM;
138 #endif // LLVM_TARGET_MSP430_ISELLOWERING_H