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llvm-mirror/lib/Target/PowerPC/PPCISelLowering.h
Chris Lattner 914a0dbba1 Move FCTIWZ handling out of the instruction selectors and into legalization,
getting them out of the business of making stack slots.

llvm-svn: 23180
2005-08-31 21:09:52 +00:00

78 lines
2.9 KiB
C++

//===-- PPC32ISelLowering.h - PPC32 DAG Lowering Interface ------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Chris Lattner and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the interfaces that PPC uses to lower LLVM code into a
// selection DAG.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TARGET_POWERPC_PPC32ISELLOWERING_H
#define LLVM_TARGET_POWERPC_PPC32ISELLOWERING_H
#include "llvm/Target/TargetLowering.h"
#include "llvm/CodeGen/SelectionDAG.h"
#include "PowerPC.h"
namespace llvm {
namespace PPCISD {
enum NodeType {
// Start the numbering where the builting ops and target ops leave off.
FIRST_NUMBER = ISD::BUILTIN_OP_END+PPC::INSTRUCTION_LIST_END,
/// FSEL - Traditional three-operand fsel node.
///
FSEL,
/// FCTIWZ - The FCTIWZ instruction, taking an f32 or f64 operand,
/// producing an f64 value.
FCTIWZ,
};
}
class PPC32TargetLowering : public TargetLowering {
int VarArgsFrameIndex; // FrameIndex for start of varargs area.
int ReturnAddrIndex; // FrameIndex for return slot.
public:
PPC32TargetLowering(TargetMachine &TM);
/// LowerOperation - Provide custom lowering hooks for some operations.
///
virtual SDOperand LowerOperation(SDOperand Op, SelectionDAG &DAG);
/// LowerArguments - This hook must be implemented to indicate how we should
/// lower the arguments for the specified function, into the specified DAG.
virtual std::vector<SDOperand>
LowerArguments(Function &F, SelectionDAG &DAG);
/// LowerCallTo - This hook lowers an abstract call to a function into an
/// actual call.
virtual std::pair<SDOperand, SDOperand>
LowerCallTo(SDOperand Chain, const Type *RetTy, bool isVarArg,
unsigned CC,
bool isTailCall, SDOperand Callee, ArgListTy &Args,
SelectionDAG &DAG);
virtual SDOperand LowerVAStart(SDOperand Chain, SDOperand VAListP,
Value *VAListV, SelectionDAG &DAG);
virtual std::pair<SDOperand,SDOperand>
LowerVAArg(SDOperand Chain, SDOperand VAListP, Value *VAListV,
const Type *ArgTy, SelectionDAG &DAG);
virtual std::pair<SDOperand, SDOperand>
LowerFrameReturnAddress(bool isFrameAddr, SDOperand Chain, unsigned Depth,
SelectionDAG &DAG);
virtual MachineBasicBlock *InsertAtEndOfBasicBlock(MachineInstr *MI,
MachineBasicBlock *MBB);
};
}
#endif // LLVM_TARGET_POWERPC_PPC32ISELLOWERING_H