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
45 //===--------------------------------------------------------------------===//
46 // TargetLowering Implementation
47 //===--------------------------------------------------------------------===//
48 class MipsTargetLowering : public TargetLowering
50 // FrameIndex for return slot.
53 // const MipsSubtarget &MipsSubTarget;
56 explicit MipsTargetLowering(MipsTargetMachine &TM);
58 /// LowerOperation - Provide custom lowering hooks for some operations.
59 virtual SDOperand LowerOperation(SDOperand Op, SelectionDAG &DAG);
61 /// getTargetNodeName - This method returns the name of a target specific
63 virtual const char *getTargetNodeName(unsigned Opcode) const;
66 // Lower Operand helpers
67 SDOperand LowerCCCArguments(SDOperand Op, SelectionDAG &DAG);
68 SDOperand LowerCCCCallTo(SDOperand Op, SelectionDAG &DAG, unsigned CC);
69 SDNode *LowerCallResult(SDOperand Chain, SDOperand InFlag, SDNode*TheCall,
70 unsigned CallingConv, SelectionDAG &DAG);
71 SDOperand getReturnAddressFrameIndex(SelectionDAG &DAG);
73 // Lower Operand specifics
74 SDOperand LowerRET(SDOperand Op, SelectionDAG &DAG);
75 SDOperand LowerCALL(SDOperand Op, SelectionDAG &DAG);
76 SDOperand LowerFORMAL_ARGUMENTS(SDOperand Op, SelectionDAG &DAG);
77 SDOperand LowerGlobalAddress(SDOperand Op, SelectionDAG &DAG);
78 SDOperand LowerGlobalTLSAddress(SDOperand Op, SelectionDAG &DAG);
79 SDOperand LowerJumpTable(SDOperand Op, SelectionDAG &DAG);
82 ConstraintType getConstraintType(const std::string &Constraint) const;
84 std::pair<unsigned, const TargetRegisterClass*>
85 getRegForInlineAsmConstraint(const std::string &Constraint,
86 MVT::ValueType VT) const;
89 getRegClassForInlineAsmConstraint(const std::string &Constraint,
90 MVT::ValueType VT) const;
94 #endif // MipsISELLOWERING_H