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.
32 /// FCFID - The FCFID instruction, taking an f64 operand and producing
33 /// and f64 value containing the FP representation of the integer that
34 /// was temporarily in the f64 operand.
37 /// FCTI[D,W]Z - The FCTIDZ and FCTIWZ instructions, taking an f32 or f64
38 /// operand, producing an f64 value containing the integer representation
44 class PPC32TargetLowering : public TargetLowering {
45 int VarArgsFrameIndex; // FrameIndex for start of varargs area.
46 int ReturnAddrIndex; // FrameIndex for return slot.
48 PPC32TargetLowering(TargetMachine &TM);
50 /// LowerOperation - Provide custom lowering hooks for some operations.
52 virtual SDOperand LowerOperation(SDOperand Op, SelectionDAG &DAG);
54 /// LowerArguments - This hook must be implemented to indicate how we should
55 /// lower the arguments for the specified function, into the specified DAG.
56 virtual std::vector<SDOperand>
57 LowerArguments(Function &F, SelectionDAG &DAG);
59 /// LowerCallTo - This hook lowers an abstract call to a function into an
61 virtual std::pair<SDOperand, SDOperand>
62 LowerCallTo(SDOperand Chain, const Type *RetTy, bool isVarArg,
64 bool isTailCall, SDOperand Callee, ArgListTy &Args,
67 virtual SDOperand LowerVAStart(SDOperand Chain, SDOperand VAListP,
68 Value *VAListV, SelectionDAG &DAG);
70 virtual std::pair<SDOperand,SDOperand>
71 LowerVAArg(SDOperand Chain, SDOperand VAListP, Value *VAListV,
72 const Type *ArgTy, SelectionDAG &DAG);
74 virtual std::pair<SDOperand, SDOperand>
75 LowerFrameReturnAddress(bool isFrameAddr, SDOperand Chain, unsigned Depth,
78 virtual MachineBasicBlock *InsertAtEndOfBasicBlock(MachineInstr *MI,
79 MachineBasicBlock *MBB);
83 #endif // LLVM_TARGET_POWERPC_PPC32ISELLOWERING_H