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
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
//===--- CodeGenTypes.cpp - Type translation for LLVM CodeGen -------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This is the code that handles AST -> LLVM type lowering.
//
//===----------------------------------------------------------------------===//
#include "CodeGenTypes.h"
#include "CodeGenModule.h"
#include "flang/AST/ASTContext.h"
#include "flang/AST/Decl.h"
#include "flang/AST/Expr.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Module.h"
namespace flang {
namespace CodeGen {
CodeGenTypes::CodeGenTypes(CodeGenModule &cgm)
: CGM(cgm), Context(cgm.getContext()) {
}
CodeGenTypes::~CodeGenTypes() { }
llvm::Type *CodeGenTypes::ConvertType(QualType T) {
auto TPtr = T.getTypePtr();
if(const BuiltinType *BTy = dyn_cast<BuiltinType>(TPtr))
return ConvertBuiltInType(BTy->getTypeSpec(),
BTy->getBuiltinTypeKind());
else if(const CharacterType *CTy = dyn_cast<CharacterType>(TPtr))
return ConvertCharType(CTy);
else if(const ArrayType *ATy = dyn_cast<ArrayType>(TPtr))
return ConvertArrayType(ATy);
else if(const FunctionType *FTy = dyn_cast<FunctionType>(TPtr))
return ConvertFunctionType(FTy);
else if(const RecordType *RTy = dyn_cast<RecordType>(TPtr))
return ConvertRecordType(RTy);
llvm_unreachable("invalid type");
return nullptr;
}
llvm::Type *CodeGenTypes::ConvertTypeForMem(QualType T) {
auto TPtr = T.getTypePtr();
if(const BuiltinType *BTy = dyn_cast<BuiltinType>(TPtr))
return ConvertBuiltInType(BTy->getTypeSpec(),
BTy->getBuiltinTypeKind());
else if(const CharacterType *CTy = dyn_cast<CharacterType>(TPtr))
return ConvertCharTypeForMem(CTy);
else if(const ArrayType *ATy = dyn_cast<ArrayType>(TPtr))
return ConvertArrayTypeForMem(ATy);
else if(const RecordType *RTy = dyn_cast<RecordType>(TPtr))
return ConvertRecordType(RTy);
llvm_unreachable("invalid type");
return nullptr;
}
llvm::Type *CodeGenTypes::ConvertBuiltInType(BuiltinType::TypeSpec Spec,
BuiltinType::TypeKind Kind) {
llvm::Type *Type;
switch(Kind) {
default:
break;
case BuiltinType::Int1:
return CGM.Int8Ty;
case BuiltinType::Int2:
return CGM.Int16Ty;
case BuiltinType::Int4:
return CGM.Int32Ty;
case BuiltinType::Int8:
return CGM.Int64Ty;
case BuiltinType::Real4:
Type = CGM.FloatTy;
break;
case BuiltinType::Real8:
Type = CGM.DoubleTy;
break;
case BuiltinType::Real16:
Type = llvm::Type::getFP128Ty(CGM.getLLVMContext());
break;
}
if(Spec == BuiltinType::Complex)
return GetComplexType(Type);
return Type;
}
llvm::Type *CodeGenTypes::GetComplexType(llvm::Type *ElementType) {
llvm::Type *Pair[2] = { ElementType, ElementType };
return llvm::StructType::get(CGM.getLLVMContext(),
ArrayRef<llvm::Type*>(Pair,2));
}
llvm::Type *CodeGenTypes::GetComplexTypeAsVector(llvm::Type *ElementType) {
return llvm::VectorType::get(ElementType, 2);
}
llvm::Type *CodeGenTypes::ConvertCharType(const CharacterType *T) {
llvm::Type *Pair[2] = { CGM.Int8PtrTy, CGM.SizeTy };
return llvm::StructType::get(CGM.getLLVMContext(),
ArrayRef<llvm::Type*>(Pair,2));
}
llvm::Type *CodeGenTypes::ConvertCharTypeForMem(const CharacterType *T) {
assert(T->hasLength());
return llvm::ArrayType::get(CGM.Int8Ty, T->getLength());
}
llvm::Type *CodeGenTypes::GetCharacterType(llvm::Type *PtrType) {
llvm::Type *Pair[2] = { PtrType, CGM.SizeTy };
return llvm::StructType::get(CGM.getLLVMContext(),
ArrayRef<llvm::Type*>(Pair,2));
}
llvm::Type *CodeGenTypes::ConvertRecordType(const RecordType *T) {
SmallVector<llvm::Type*, 16> Fields;
for(auto I : T->getElements()) {
Fields.push_back(ConvertTypeForMem(I->getType()));
}
return llvm::StructType::get(CGM.getLLVMContext(), Fields);
}
llvm::Type *CodeGenTypes::ConvertFunctionType(const FunctionType *T) {
return llvm::PointerType::get(GetFunctionType(T->getPrototype())->getFunctionType(), 0);
}
const CGFunctionInfo *CodeGenTypes::GetFunctionType(const FunctionDecl *FD) {
CGFunctionInfo::RetInfo ReturnInfo;
ReturnInfo.ABIInfo = DefaultABI.GetRetABI(FD->getType());
auto ReturnType = ConvertReturnType(FD->getType(), ReturnInfo);
auto Args = FD->getArguments();
SmallVector<CGFunctionInfo::ArgInfo, 16> ArgInfo;
SmallVector<llvm::Type*, 16> ArgTypes;
SmallVector<llvm::Type*, 4> AdditionalArgTypes;
for(size_t I = 0; I < Args.size(); ++I) {
auto ArgType = Args[I]->getType();
CGFunctionInfo::ArgInfo Info;
Info.ABIInfo = DefaultABI.GetArgABI(ArgType);
ConvertArgumentType(ArgTypes, AdditionalArgTypes, ArgType, Info);
ArgInfo.push_back(Info);
}
ConvertArgumentTypeForReturnValue(ArgInfo, ArgTypes, AdditionalArgTypes,
FD->getType(), ReturnInfo);
for(auto I : AdditionalArgTypes) ArgTypes.push_back(I);
// FIXME: fold same infos into one?
auto Result = CGFunctionInfo::Create(Context, llvm::CallingConv::C,
llvm::FunctionType::get(ReturnType, ArgTypes, false),
ArgInfo,
ReturnInfo);
return Result;
}
const CGFunctionInfo *
CodeGenTypes::GetFunctionType(FortranABI &ABI,
ArrayRef<CGType> Args,
CGType ReturnType) {
CGFunctionInfo::RetInfo ReturnInfo;
llvm::Type *RetType;
if(ReturnType.isQualType()) {
ReturnInfo.ABIInfo = ABI.GetRetABI(ReturnType.asQualType());
RetType = ConvertReturnType(ReturnType.asQualType(), ReturnInfo);
}
else {
ReturnInfo.ABIInfo = ABIRetInfo(ABIRetInfo::Value);
RetType = ReturnType.asLLVMType();
}
SmallVector<CGFunctionInfo::ArgInfo, 8> ArgInfo;
SmallVector<llvm::Type*, 8> ArgTypes;
SmallVector<llvm::Type*, 4> AdditionalArgTypes;
for(size_t I = 0; I < Args.size(); ++I) {
CGFunctionInfo::ArgInfo Info;
if(Args[I].isQualType()) {
Info.ABIInfo = ABI.GetArgABI(Args[I].asQualType());
ConvertArgumentType(ArgTypes, AdditionalArgTypes,
Args[I].asQualType(), Info);
} else {
Info.ABIInfo = ABIArgInfo(ABIArgInfo::Value);
ArgTypes.push_back(Args[I].asLLVMType());
}
ArgInfo.push_back(Info);
}
ConvertArgumentTypeForReturnValue(ArgInfo, ArgTypes, AdditionalArgTypes,
ReturnType.asQualType(), ReturnInfo);
for(auto I : AdditionalArgTypes) ArgTypes.push_back(I);
auto Result = CGFunctionInfo::Create(Context, llvm::CallingConv::C,
llvm::FunctionType::get(RetType, ArgTypes, false),
ArgInfo,
ReturnInfo);
return Result;
}
} } // end namespace flang
|
