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
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
|
//===-- SparcISelLowering.h - Sparc 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 Sparc uses to lower LLVM code into a
// selection DAG.
//
//===----------------------------------------------------------------------===//
#ifndef SPARC_ISELLOWERING_H
#define SPARC_ISELLOWERING_H
#include "Sparc.h"
#include "llvm/Target/TargetLowering.h"
namespace llvm {
class SparcSubtarget;
namespace SPISD {
enum {
FIRST_NUMBER = ISD::BUILTIN_OP_END,
CMPICC, // Compare two GPR operands, set icc+xcc.
CMPFCC, // Compare two FP operands, set fcc.
BRICC, // Branch to dest on icc condition
BRXCC, // Branch to dest on xcc condition (64-bit only).
BRFCC, // Branch to dest on fcc condition
SELECT_ICC, // Select between two values using the current ICC flags.
SELECT_XCC, // Select between two values using the current XCC flags.
SELECT_FCC, // Select between two values using the current FCC flags.
Hi, Lo, // Hi/Lo operations, typically on a global address.
FTOI, // FP to Int within a FP register.
ITOF, // Int to FP within a FP register.
FTOX, // FP to Int64 within a FP register.
XTOF, // Int64 to FP within a FP register.
CALL, // A call instruction.
RET_FLAG, // Return with a flag operand.
GLOBAL_BASE_REG, // Global base reg for PIC.
FLUSHW, // FLUSH register windows to stack.
TLS_ADD, // For Thread Local Storage (TLS).
TLS_LD,
TLS_CALL
};
}
class SparcTargetLowering : public TargetLowering {
const SparcSubtarget *Subtarget;
public:
SparcTargetLowering(TargetMachine &TM);
virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const;
/// computeMaskedBitsForTargetNode - Determine which of the bits specified
/// in Mask are known to be either zero or one and return them in the
/// KnownZero/KnownOne bitsets.
virtual void computeMaskedBitsForTargetNode(const SDValue Op,
APInt &KnownZero,
APInt &KnownOne,
const SelectionDAG &DAG,
unsigned Depth = 0) const;
virtual MachineBasicBlock *
EmitInstrWithCustomInserter(MachineInstr *MI,
MachineBasicBlock *MBB) const;
virtual const char *getTargetNodeName(unsigned Opcode) const;
ConstraintType getConstraintType(const std::string &Constraint) const;
std::pair<unsigned, const TargetRegisterClass*>
getRegForInlineAsmConstraint(const std::string &Constraint, MVT VT) const;
virtual bool isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const;
virtual MVT getScalarShiftAmountTy(EVT LHSTy) const { return MVT::i32; }
/// getSetCCResultType - Return the ISD::SETCC ValueType
virtual EVT getSetCCResultType(LLVMContext &Context, EVT VT) const;
virtual SDValue
LowerFormalArguments(SDValue Chain,
CallingConv::ID CallConv,
bool isVarArg,
const SmallVectorImpl<ISD::InputArg> &Ins,
SDLoc dl, SelectionDAG &DAG,
SmallVectorImpl<SDValue> &InVals) const;
SDValue LowerFormalArguments_32(SDValue Chain,
CallingConv::ID CallConv,
bool isVarArg,
const SmallVectorImpl<ISD::InputArg> &Ins,
SDLoc dl, SelectionDAG &DAG,
SmallVectorImpl<SDValue> &InVals) const;
SDValue LowerFormalArguments_64(SDValue Chain,
CallingConv::ID CallConv,
bool isVarArg,
const SmallVectorImpl<ISD::InputArg> &Ins,
SDLoc dl, SelectionDAG &DAG,
SmallVectorImpl<SDValue> &InVals) const;
virtual SDValue
LowerCall(TargetLowering::CallLoweringInfo &CLI,
SmallVectorImpl<SDValue> &InVals) const;
SDValue LowerCall_32(TargetLowering::CallLoweringInfo &CLI,
SmallVectorImpl<SDValue> &InVals) const;
SDValue LowerCall_64(TargetLowering::CallLoweringInfo &CLI,
SmallVectorImpl<SDValue> &InVals) const;
virtual SDValue
LowerReturn(SDValue Chain,
CallingConv::ID CallConv, bool isVarArg,
const SmallVectorImpl<ISD::OutputArg> &Outs,
const SmallVectorImpl<SDValue> &OutVals,
SDLoc dl, SelectionDAG &DAG) const;
SDValue LowerReturn_32(SDValue Chain,
CallingConv::ID CallConv, bool IsVarArg,
const SmallVectorImpl<ISD::OutputArg> &Outs,
const SmallVectorImpl<SDValue> &OutVals,
SDLoc DL, SelectionDAG &DAG) const;
SDValue LowerReturn_64(SDValue Chain,
CallingConv::ID CallConv, bool IsVarArg,
const SmallVectorImpl<ISD::OutputArg> &Outs,
const SmallVectorImpl<SDValue> &OutVals,
SDLoc DL, SelectionDAG &DAG) const;
SDValue LowerGlobalAddress(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerConstantPool(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerBlockAddress(SDValue Op, SelectionDAG &DAG) const;
unsigned getSRetArgSize(SelectionDAG &DAG, SDValue Callee) const;
SDValue withTargetFlags(SDValue Op, unsigned TF, SelectionDAG &DAG) const;
SDValue makeHiLoPair(SDValue Op, unsigned HiTF, unsigned LoTF,
SelectionDAG &DAG) const;
SDValue makeAddress(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerF128_LibCallArg(SDValue Chain, ArgListTy &Args,
SDValue Arg, SDLoc DL,
SelectionDAG &DAG) const;
SDValue LowerF128Op(SDValue Op, SelectionDAG &DAG,
const char *LibFuncName,
unsigned numArgs) const;
SDValue LowerF128Compare(SDValue LHS, SDValue RHS,
unsigned &SPCC,
SDLoc DL,
SelectionDAG &DAG) const;
bool ShouldShrinkFPConstant(EVT VT) const {
// Do not shrink FP constpool if VT == MVT::f128.
// (ldd, call _Q_fdtoq) is more expensive than two ldds.
return VT != MVT::f128;
}
virtual void ReplaceNodeResults(SDNode *N,
SmallVectorImpl<SDValue>& Results,
SelectionDAG &DAG) const;
};
} // end namespace llvm
#endif // SPARC_ISELLOWERING_H
|
