1 //===-- PPC32ISelLowering.h - PPC32 DAG Lowering Interface ------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by Chris Lattner and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the interfaces that PPC uses to lower LLVM code into a
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_TARGET_POWERPC_PPC32ISELLOWERING_H
16 #define LLVM_TARGET_POWERPC_PPC32ISELLOWERING_H
18 #include "llvm/Target/TargetLowering.h"
19 #include "llvm/CodeGen/SelectionDAG.h"
25 // Start the numbering where the builting ops and target ops leave off.
26 FIRST_NUMBER = ISD::BUILTIN_OP_END+PPC::INSTRUCTION_LIST_END,
28 /// FSEL - Traditional three-operand fsel node.
34 class PPC32TargetLowering : public TargetLowering {
35 int VarArgsFrameIndex; // FrameIndex for start of varargs area.
36 int ReturnAddrIndex; // FrameIndex for return slot.
38 PPC32TargetLowering(TargetMachine &TM);
40 /// LowerOperation - Provide custom lowering hooks for some operations.
42 virtual SDOperand LowerOperation(SDOperand Op, SelectionDAG &DAG);
44 /// LowerArguments - This hook must be implemented to indicate how we should
45 /// lower the arguments for the specified function, into the specified DAG.
46 virtual std::vector<SDOperand>
47 LowerArguments(Function &F, SelectionDAG &DAG);
49 /// LowerCallTo - This hook lowers an abstract call to a function into an
51 virtual std::pair<SDOperand, SDOperand>
52 LowerCallTo(SDOperand Chain, const Type *RetTy, bool isVarArg,
54 bool isTailCall, SDOperand Callee, ArgListTy &Args,
57 virtual SDOperand LowerVAStart(SDOperand Chain, SDOperand VAListP,
58 Value *VAListV, SelectionDAG &DAG);
60 virtual std::pair<SDOperand,SDOperand>
61 LowerVAArg(SDOperand Chain, SDOperand VAListP, Value *VAListV,
62 const Type *ArgTy, SelectionDAG &DAG);
64 virtual std::pair<SDOperand, SDOperand>
65 LowerFrameReturnAddress(bool isFrameAddr, SDOperand Chain, unsigned Depth,
68 virtual MachineBasicBlock *InsertAtEndOfBasicBlock(MachineInstr *MI,
69 MachineBasicBlock *MBB);
73 #endif // LLVM_TARGET_POWERPC_PPC32ISELLOWERING_H