1 //===-- MipsISelLowering.h - Mips 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 Mips uses to lower LLVM code into a
13 //===----------------------------------------------------------------------===//
15 #ifndef MipsISELLOWERING_H
16 #define MipsISELLOWERING_H
18 #include "llvm/CodeGen/SelectionDAG.h"
19 #include "llvm/Target/TargetLowering.h"
21 #include "MipsSubtarget.h"
26 // Start the numbering from where ISD NodeType finishes.
27 FIRST_NUMBER = ISD::BUILTIN_OP_END+Mips::INSTRUCTION_LIST_END,
29 // Jump and link (call)
32 // Get the Higher 16 bits from a 32-bit immediate
33 // No relation with Mips Hi register
36 // Get the Lower 16 bits from a 32-bit immediate
37 // No relation with Mips Lo register
40 // Select CC Pseudo Instruction
43 // Floating Point Branch Conditional
46 // Floating Point Compare
54 //===--------------------------------------------------------------------===//
55 // TargetLowering Implementation
56 //===--------------------------------------------------------------------===//
57 class MipsTargetLowering : public TargetLowering
59 // FrameIndex for return slot.
62 // const MipsSubtarget &MipsSubTarget;
65 explicit MipsTargetLowering(MipsTargetMachine &TM);
67 /// LowerOperation - Provide custom lowering hooks for some operations.
68 virtual SDOperand LowerOperation(SDOperand Op, SelectionDAG &DAG);
70 /// getTargetNodeName - This method returns the name of a target specific
72 virtual const char *getTargetNodeName(unsigned Opcode) const;
74 /// getSetCCResultType - get the ISD::SETCC result ValueType
75 MVT getSetCCResultType(const SDOperand &) const;
79 const MipsSubtarget *Subtarget;
81 // Lower Operand helpers
82 SDOperand LowerCCCArguments(SDOperand Op, SelectionDAG &DAG);
83 SDOperand LowerCCCCallTo(SDOperand Op, SelectionDAG &DAG, unsigned CC);
84 SDNode *LowerCallResult(SDOperand Chain, SDOperand InFlag, SDNode*TheCall,
85 unsigned CallingConv, SelectionDAG &DAG);
86 SDOperand getReturnAddressFrameIndex(SelectionDAG &DAG);
88 // Lower Operand specifics
89 SDOperand LowerRET(SDOperand Op, SelectionDAG &DAG);
90 SDOperand LowerCALL(SDOperand Op, SelectionDAG &DAG);
91 SDOperand LowerFORMAL_ARGUMENTS(SDOperand Op, SelectionDAG &DAG);
92 SDOperand LowerGlobalAddress(SDOperand Op, SelectionDAG &DAG);
93 SDOperand LowerGlobalTLSAddress(SDOperand Op, SelectionDAG &DAG);
94 SDOperand LowerJumpTable(SDOperand Op, SelectionDAG &DAG);
95 SDOperand LowerConstantPool(SDOperand Op, SelectionDAG &DAG);
96 SDOperand LowerSELECT_CC(SDOperand Op, SelectionDAG &DAG);
98 virtual MachineBasicBlock *EmitInstrWithCustomInserter(MachineInstr *MI,
99 MachineBasicBlock *MBB);
101 // Inline asm support
102 ConstraintType getConstraintType(const std::string &Constraint) const;
104 std::pair<unsigned, const TargetRegisterClass*>
105 getRegForInlineAsmConstraint(const std::string &Constraint,
108 std::vector<unsigned>
109 getRegClassForInlineAsmConstraint(const std::string &Constraint,
114 #endif // MipsISELLOWERING_H