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/TAILCALL - 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. Operand 0 and operand 1 are selection variable, operand 3 is
58 /// condition code and operand 4 is flag operand.
61 /// CLRC - Clear carry bit
66 class MSP430Subtarget;
67 class MSP430TargetMachine;
69 class MSP430TargetLowering : public TargetLowering {
71 explicit MSP430TargetLowering(MSP430TargetMachine &TM);
73 /// LowerOperation - Provide custom lowering hooks for some operations.
74 virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG);
76 /// getTargetNodeName - This method returns the name of a target specific
78 virtual const char *getTargetNodeName(unsigned Opcode) const;
80 virtual MVT getSetCCResultType(MVT VT) const;
82 SDValue LowerFORMAL_ARGUMENTS(SDValue Op, SelectionDAG &DAG);
83 SDValue LowerCALL(SDValue Op, SelectionDAG &DAG);
84 SDValue LowerRET(SDValue Op, SelectionDAG &DAG);
85 SDValue LowerCCCArguments(SDValue Op, SelectionDAG &DAG);
86 SDValue LowerShifts(SDValue Op, SelectionDAG &DAG);
87 SDValue LowerGlobalAddress(SDValue Op, SelectionDAG &DAG);
88 SDValue LowerExternalSymbol(SDValue Op, SelectionDAG &DAG);
89 SDValue LowerSETCC(SDValue Op, SelectionDAG &DAG);
90 SDValue LowerBRCOND(SDValue Op, SelectionDAG &DAG);
91 SDValue LowerSELECT(SDValue Op, SelectionDAG &DAG);
93 SDValue LowerCCCCallTo(SDValue Op, SelectionDAG &DAG,
95 SDNode* LowerCallResult(SDValue Chain, SDValue InFlag,
97 unsigned CallingConv, SelectionDAG &DAG);
99 MachineBasicBlock* EmitInstrWithCustomInserter(MachineInstr *MI,
100 MachineBasicBlock *BB) const;
103 const MSP430Subtarget &Subtarget;
104 const MSP430TargetMachine &TM;
108 #endif // LLVM_TARGET_MSP430_ISELLOWERING_H