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,
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 // Handle gp_rel (small data/bss sections) relocation.
46 // Select CC Pseudo Instruction
49 // Floating Point Select CC Pseudo Instruction
52 // Floating Point Branch Conditional
55 // Floating Point Compare
63 //===--------------------------------------------------------------------===//
64 // TargetLowering Implementation
65 //===--------------------------------------------------------------------===//
66 class MipsTargetLowering : public TargetLowering
68 // FrameIndex for return slot.
72 explicit MipsTargetLowering(MipsTargetMachine &TM);
74 /// LowerOperation - Provide custom lowering hooks for some operations.
75 virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG);
77 /// getTargetNodeName - This method returns the name of a target specific
79 virtual const char *getTargetNodeName(unsigned Opcode) const;
81 /// getSetCCResultType - get the ISD::SETCC result ValueType
82 MVT getSetCCResultType(MVT VT) const;
86 const MipsSubtarget *Subtarget;
88 // Lower Operand helpers
89 SDNode *LowerCallResult(SDValue Chain, SDValue InFlag, CallSDNode *TheCall,
90 unsigned CallingConv, SelectionDAG &DAG);
91 bool IsGlobalInSmallSection(GlobalValue *GV);
92 bool IsInSmallSection(unsigned Size);
94 // Lower Operand specifics
95 SDValue LowerANDOR(SDValue Op, SelectionDAG &DAG);
96 SDValue LowerBRCOND(SDValue Op, SelectionDAG &DAG);
97 SDValue LowerCALL(SDValue Op, SelectionDAG &DAG);
98 SDValue LowerConstantPool(SDValue Op, SelectionDAG &DAG);
99 SDValue LowerDYNAMIC_STACKALLOC(SDValue Op, SelectionDAG &DAG);
100 SDValue LowerFORMAL_ARGUMENTS(SDValue Op, SelectionDAG &DAG);
101 SDValue LowerGlobalAddress(SDValue Op, SelectionDAG &DAG);
102 SDValue LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG);
103 SDValue LowerJumpTable(SDValue Op, SelectionDAG &DAG);
104 SDValue LowerRET(SDValue Op, SelectionDAG &DAG);
105 SDValue LowerSELECT(SDValue Op, SelectionDAG &DAG);
106 SDValue LowerSETCC(SDValue Op, SelectionDAG &DAG);
108 virtual MachineBasicBlock *EmitInstrWithCustomInserter(MachineInstr *MI,
109 MachineBasicBlock *MBB);
111 // Inline asm support
112 ConstraintType getConstraintType(const std::string &Constraint) const;
114 std::pair<unsigned, const TargetRegisterClass*>
115 getRegForInlineAsmConstraint(const std::string &Constraint,
118 std::vector<unsigned>
119 getRegClassForInlineAsmConstraint(const std::string &Constraint,
122 virtual bool isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const;
126 #endif // MipsISELLOWERING_H