1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
//===-- Nios2ISelLowering.h - Nios2 DAG Lowering Interface ------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the interfaces that Nios2 uses to lower LLVM code into a
// selection DAG.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_NIOS2_NIOS2ISELLOWERING_H
#define LLVM_LIB_TARGET_NIOS2_NIOS2ISELLOWERING_H
#include "Nios2.h"
#include "llvm/CodeGen/TargetLowering.h"
namespace llvm {
class Nios2Subtarget;
namespace Nios2ISD {
enum NodeType {
// Start the numbering from where ISD NodeType finishes.
FIRST_NUMBER = ISD::BUILTIN_OP_END,
// Get the Higher 16 bits from a 32-bit immediate
// No relation with Nios2 Hi register
Hi,
// Get the Lower 16 bits from a 32-bit immediate
// No relation with Nios2 Lo register
Lo,
// Return
Ret
};
}
class Nios2TargetLowering : public TargetLowering {
const Nios2Subtarget *Subtarget;
public:
Nios2TargetLowering(const TargetMachine &TM, const Nios2Subtarget &STI);
/// getTargetNodeName - This method returns the name of a target specific
// DAG node.
const char *getTargetNodeName(unsigned Opcode) const override;
SDValue LowerFormalArguments(SDValue Chain, CallingConv::ID CallConv,
bool IsVarArg,
const SmallVectorImpl<ISD::InputArg> &Ins,
const SDLoc &dl, SelectionDAG &DAG,
SmallVectorImpl<SDValue> &InVals) const override;
SDValue LowerReturn(SDValue Chain, CallingConv::ID CallConv, bool isVarArg,
const SmallVectorImpl<ISD::OutputArg> &Outs,
const SmallVectorImpl<SDValue> &OutVals, const SDLoc &dl,
SelectionDAG &DAG) const override;
};
} // end namespace llvm
#endif // NIOS2_ISELLOWERING_H
|
