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Daniel Dunbarbd012ff2008-07-29 23:18:29 +00001//===--- CodeGenModule.h - Per-Module state for LLVM CodeGen ----*- C++ -*-===//
Reid Spencer5f016e22007-07-11 17:01:13 +00002//
3// The LLVM Compiler Infrastructure
4//
Chris Lattner0bc735f2007-12-29 19:59:25 +00005// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
Reid Spencer5f016e22007-07-11 17:01:13 +00007//
8//===----------------------------------------------------------------------===//
9//
Mike Stumpecc90e92009-02-13 19:12:34 +000010// This is the internal per-translation-unit state used for llvm translation.
Reid Spencer5f016e22007-07-11 17:01:13 +000011//
12//===----------------------------------------------------------------------===//
13
Chris Lattneref52a2f2008-02-29 17:10:38 +000014#ifndef CLANG_CODEGEN_CODEGENMODULE_H
15#define CLANG_CODEGEN_CODEGENMODULE_H
Reid Spencer5f016e22007-07-11 17:01:13 +000016
Chandler Carruth55fc8732012-12-04 09:13:33 +000017#include "CGVTables.h"
18#include "CodeGenTypes.h"
Dan Gohman4f8d1232008-05-22 00:50:06 +000019#include "clang/AST/Attr.h"
Anders Carlsson2a131fb2009-05-05 04:44:02 +000020#include "clang/AST/DeclCXX.h"
Anders Carlsson0ff8baf2009-09-11 00:07:24 +000021#include "clang/AST/DeclObjC.h"
Peter Collingbournefd05ca02011-06-14 04:02:39 +000022#include "clang/AST/GlobalDecl.h"
Peter Collingbourne14110472011-01-13 18:57:25 +000023#include "clang/AST/Mangle.h"
Chandler Carruth55fc8732012-12-04 09:13:33 +000024#include "clang/Basic/ABI.h"
25#include "clang/Basic/LangOptions.h"
Douglas Gregorb6cbe512013-01-14 17:21:00 +000026#include "clang/Basic/Module.h"
Reid Spencer5f016e22007-07-11 17:01:13 +000027#include "llvm/ADT/DenseMap.h"
Douglas Gregorb6cbe512013-01-14 17:21:00 +000028#include "llvm/ADT/SetVector.h"
Rafael Espindola6a836702010-03-04 18:17:24 +000029#include "llvm/ADT/SmallPtrSet.h"
Chandler Carruth55fc8732012-12-04 09:13:33 +000030#include "llvm/ADT/StringMap.h"
John McCallbd7370a2013-02-28 19:01:20 +000031#include "llvm/IR/CallingConv.h"
Chandler Carruth3b844ba2013-01-02 11:45:17 +000032#include "llvm/IR/Module.h"
Chris Lattner35f38a22009-03-31 22:37:52 +000033#include "llvm/Support/ValueHandle.h"
Will Dietz4f45bc02013-01-18 11:30:38 +000034#include "llvm/Transforms/Utils/BlackList.h"
Anders Carlssonb723f752009-01-04 02:08:04 +000035
Reid Spencer5f016e22007-07-11 17:01:13 +000036namespace llvm {
37 class Module;
38 class Constant;
John McCallbc8d40d2011-06-24 21:55:10 +000039 class ConstantInt;
Reid Spencer5f016e22007-07-11 17:01:13 +000040 class Function;
Nate Begeman8bd4afe2008-04-19 04:17:09 +000041 class GlobalValue;
Micah Villmow25a6a842012-10-08 16:25:52 +000042 class DataLayout;
Eli Friedmanff4a2d92008-06-01 15:54:49 +000043 class FunctionType;
Benjamin Kramerf21efe92009-08-11 17:46:57 +000044 class LLVMContext;
Reid Spencer5f016e22007-07-11 17:01:13 +000045}
46
47namespace clang {
Anton Korobeynikov82d0a412010-01-10 12:58:08 +000048 class TargetCodeGenInfo;
Reid Spencer5f016e22007-07-11 17:01:13 +000049 class ASTContext;
John McCall9eda3ab2013-03-07 21:37:17 +000050 class AtomicType;
Reid Spencer5f016e22007-07-11 17:01:13 +000051 class FunctionDecl;
Daniel Dunbar90db8822008-08-25 06:18:57 +000052 class IdentifierInfo;
Chris Lattner391d77a2008-03-30 23:03:07 +000053 class ObjCMethodDecl;
Anton Korobeynikov20ff3102008-06-01 14:13:53 +000054 class ObjCImplementationDecl;
55 class ObjCCategoryImplDecl;
56 class ObjCProtocolDecl;
Chris Lattnereaf2bb82009-02-24 22:18:39 +000057 class ObjCEncodeExpr;
Anders Carlssond5cab542009-02-12 17:55:02 +000058 class BlockExpr;
Ken Dyck687cc4a2010-01-26 13:48:07 +000059 class CharUnits;
Reid Spencer5f016e22007-07-11 17:01:13 +000060 class Decl;
Oliver Hunt28247232007-12-02 00:11:25 +000061 class Expr;
Chris Lattner2c8569d2007-12-02 07:19:18 +000062 class Stmt;
Sebastian Redl19b1a6e2012-02-25 20:51:20 +000063 class InitListExpr;
Daniel Dunbar1e049762008-08-10 20:25:57 +000064 class StringLiteral;
Nate Begeman1a1d92a2008-04-20 20:38:08 +000065 class NamedDecl;
Daniel Dunbarbd012ff2008-07-29 23:18:29 +000066 class ValueDecl;
Chris Lattner2b9d2ca2007-12-18 08:16:44 +000067 class VarDecl;
Sebastian Redl43af76e2009-03-07 12:16:37 +000068 class LangOptions;
Chandler Carruth2811ccf2009-11-12 17:24:48 +000069 class CodeGenOptions;
Bill Wendlinge1092df2013-02-14 08:09:20 +000070 class TargetOptions;
David Blaikied6471f72011-09-25 23:23:43 +000071 class DiagnosticsEngine;
Nate Begeman8bd4afe2008-04-19 04:17:09 +000072 class AnnotateAttr;
Anders Carlsson27ae5362009-04-17 01:58:57 +000073 class CXXDestructorDecl;
Peter Collingbourne14110472011-01-13 18:57:25 +000074 class MangleBuffer;
Douglas Gregorb6cbe512013-01-14 17:21:00 +000075 class Module;
Mike Stumpecc90e92009-02-13 19:12:34 +000076
Reid Spencer5f016e22007-07-11 17:01:13 +000077namespace CodeGen {
78
John McCalld26bc762011-03-09 04:27:21 +000079 class CallArgList;
Lauro Ramos Venancio81373352008-02-26 21:41:45 +000080 class CodeGenFunction;
Dan Gohman3d5aff52010-10-14 23:06:10 +000081 class CodeGenTBAA;
John McCall4c40d982010-08-31 07:33:07 +000082 class CGCXXABI;
Sanjiv Guptae8b9f5b2008-05-08 08:54:20 +000083 class CGDebugInfo;
Daniel Dunbaraf2f62c2008-08-13 00:59:25 +000084 class CGObjCRuntime;
Peter Collingbourne8c25fc52011-09-19 21:14:35 +000085 class CGOpenCLRuntime;
Peter Collingbourne6c0aa5f2011-10-06 18:29:37 +000086 class CGCUDARuntime;
John McCalld16c2cf2011-02-08 08:22:06 +000087 class BlockFieldFlags;
John McCalld26bc762011-03-09 04:27:21 +000088 class FunctionArgList;
Anders Carlsson4a6835e2009-09-10 23:38:47 +000089
Chris Lattnerec2830d2010-06-27 06:32:58 +000090 struct OrderGlobalInits {
Fariborz Jahaniane0b691a2010-06-21 21:27:42 +000091 unsigned int priority;
92 unsigned int lex_order;
93 OrderGlobalInits(unsigned int p, unsigned int l)
Chris Lattnerec2830d2010-06-27 06:32:58 +000094 : priority(p), lex_order(l) {}
95
96 bool operator==(const OrderGlobalInits &RHS) const {
97 return priority == RHS.priority &&
98 lex_order == RHS.lex_order;
Fariborz Jahanianf4896882010-06-22 00:23:08 +000099 }
100
Chris Lattnerec2830d2010-06-27 06:32:58 +0000101 bool operator<(const OrderGlobalInits &RHS) const {
102 if (priority < RHS.priority)
Fariborz Jahanianf4896882010-06-22 00:23:08 +0000103 return true;
104
Chris Lattnerec2830d2010-06-27 06:32:58 +0000105 return priority == RHS.priority && lex_order < RHS.lex_order;
Fariborz Jahanianf4896882010-06-22 00:23:08 +0000106 }
Chris Lattnerec2830d2010-06-27 06:32:58 +0000107 };
John McCall5936e332011-02-15 09:22:45 +0000108
109 struct CodeGenTypeCache {
John McCall0774cb82011-05-15 01:53:33 +0000110 /// void
Chris Lattner9cbe4f02011-07-09 17:41:47 +0000111 llvm::Type *VoidTy;
John McCall0774cb82011-05-15 01:53:33 +0000112
Chris Lattner8b418682012-02-07 00:39:47 +0000113 /// i8, i16, i32, and i64
114 llvm::IntegerType *Int8Ty, *Int16Ty, *Int32Ty, *Int64Ty;
115 /// float, double
116 llvm::Type *FloatTy, *DoubleTy;
John McCall5936e332011-02-15 09:22:45 +0000117
118 /// int
Chris Lattner9cbe4f02011-07-09 17:41:47 +0000119 llvm::IntegerType *IntTy;
John McCall5936e332011-02-15 09:22:45 +0000120
John McCall0774cb82011-05-15 01:53:33 +0000121 /// intptr_t, size_t, and ptrdiff_t, which we assume are the same size.
John McCall5936e332011-02-15 09:22:45 +0000122 union {
Chris Lattner9cbe4f02011-07-09 17:41:47 +0000123 llvm::IntegerType *IntPtrTy;
124 llvm::IntegerType *SizeTy;
125 llvm::IntegerType *PtrDiffTy;
John McCall5936e332011-02-15 09:22:45 +0000126 };
127
128 /// void* in address space 0
129 union {
Chris Lattner9cbe4f02011-07-09 17:41:47 +0000130 llvm::PointerType *VoidPtrTy;
131 llvm::PointerType *Int8PtrTy;
John McCall5936e332011-02-15 09:22:45 +0000132 };
133
134 /// void** in address space 0
135 union {
Chris Lattner9cbe4f02011-07-09 17:41:47 +0000136 llvm::PointerType *VoidPtrPtrTy;
137 llvm::PointerType *Int8PtrPtrTy;
John McCall5936e332011-02-15 09:22:45 +0000138 };
139
John McCall34695852011-02-22 06:44:22 +0000140 /// The width of a pointer into the generic address space.
John McCall5936e332011-02-15 09:22:45 +0000141 unsigned char PointerWidthInBits;
John McCall34695852011-02-22 06:44:22 +0000142
John McCall71c758d2011-09-10 09:17:20 +0000143 /// The size and alignment of a pointer into the generic address
144 /// space.
145 union {
146 unsigned char PointerAlignInBytes;
147 unsigned char PointerSizeInBytes;
John McCalle2b45e22012-05-01 05:23:51 +0000148 unsigned char SizeSizeInBytes; // sizeof(size_t)
John McCall71c758d2011-09-10 09:17:20 +0000149 };
John McCallbd7370a2013-02-28 19:01:20 +0000150
151 llvm::CallingConv::ID RuntimeCC;
152 llvm::CallingConv::ID getRuntimeCC() const {
153 return RuntimeCC;
154 }
John McCall5936e332011-02-15 09:22:45 +0000155 };
John McCallf85e1932011-06-15 23:02:42 +0000156
157struct RREntrypoints {
158 RREntrypoints() { memset(this, 0, sizeof(*this)); }
159 /// void objc_autoreleasePoolPop(void*);
160 llvm::Constant *objc_autoreleasePoolPop;
161
162 /// void *objc_autoreleasePoolPush(void);
163 llvm::Constant *objc_autoreleasePoolPush;
164};
165
166struct ARCEntrypoints {
167 ARCEntrypoints() { memset(this, 0, sizeof(*this)); }
168
169 /// id objc_autorelease(id);
170 llvm::Constant *objc_autorelease;
171
172 /// id objc_autoreleaseReturnValue(id);
173 llvm::Constant *objc_autoreleaseReturnValue;
174
175 /// void objc_copyWeak(id *dest, id *src);
176 llvm::Constant *objc_copyWeak;
177
178 /// void objc_destroyWeak(id*);
179 llvm::Constant *objc_destroyWeak;
180
181 /// id objc_initWeak(id*, id);
182 llvm::Constant *objc_initWeak;
183
184 /// id objc_loadWeak(id*);
185 llvm::Constant *objc_loadWeak;
186
187 /// id objc_loadWeakRetained(id*);
188 llvm::Constant *objc_loadWeakRetained;
189
190 /// void objc_moveWeak(id *dest, id *src);
191 llvm::Constant *objc_moveWeak;
192
193 /// id objc_retain(id);
194 llvm::Constant *objc_retain;
195
196 /// id objc_retainAutorelease(id);
197 llvm::Constant *objc_retainAutorelease;
198
199 /// id objc_retainAutoreleaseReturnValue(id);
200 llvm::Constant *objc_retainAutoreleaseReturnValue;
201
202 /// id objc_retainAutoreleasedReturnValue(id);
203 llvm::Constant *objc_retainAutoreleasedReturnValue;
204
205 /// id objc_retainBlock(id);
206 llvm::Constant *objc_retainBlock;
207
208 /// void objc_release(id);
209 llvm::Constant *objc_release;
210
211 /// id objc_storeStrong(id*, id);
212 llvm::Constant *objc_storeStrong;
213
214 /// id objc_storeWeak(id*, id);
215 llvm::Constant *objc_storeWeak;
216
217 /// A void(void) inline asm to use to mark that the return value of
218 /// a call will be immediately retain.
219 llvm::InlineAsm *retainAutoreleasedReturnValueMarker;
John McCallb6a60792013-03-23 02:35:54 +0000220
221 /// void clang.arc.use(...);
222 llvm::Constant *clang_arc_use;
John McCallf85e1932011-06-15 23:02:42 +0000223};
Will Dietz4f45bc02013-01-18 11:30:38 +0000224
Mike Stumpecc90e92009-02-13 19:12:34 +0000225/// CodeGenModule - This class organizes the cross-function state that is used
226/// while generating LLVM code.
John McCall5936e332011-02-15 09:22:45 +0000227class CodeGenModule : public CodeGenTypeCache {
Dmitri Gribenkof56faa02012-09-15 20:20:27 +0000228 CodeGenModule(const CodeGenModule &) LLVM_DELETED_FUNCTION;
229 void operator=(const CodeGenModule &) LLVM_DELETED_FUNCTION;
Anders Carlsson8a219ce2009-02-24 04:21:31 +0000230
Chris Lattnerca0017a2009-09-12 22:45:21 +0000231 typedef std::vector<std::pair<llvm::Constant*, int> > CtorList;
Daniel Dunbar6bfed7e2008-08-01 00:01:51 +0000232
Reid Spencer5f016e22007-07-11 17:01:13 +0000233 ASTContext &Context;
David Blaikie4e4d0842012-03-11 07:00:24 +0000234 const LangOptions &LangOpts;
Chandler Carruth2811ccf2009-11-12 17:24:48 +0000235 const CodeGenOptions &CodeGenOpts;
Bill Wendlinge1092df2013-02-14 08:09:20 +0000236 const TargetOptions &TargetOpts;
Reid Spencer5f016e22007-07-11 17:01:13 +0000237 llvm::Module &TheModule;
Micah Villmow25a6a842012-10-08 16:25:52 +0000238 const llvm::DataLayout &TheDataLayout;
Anton Korobeynikov82d0a412010-01-10 12:58:08 +0000239 mutable const TargetCodeGenInfo *TheTargetCodeGenInfo;
David Blaikied6471f72011-09-25 23:23:43 +0000240 DiagnosticsEngine &Diags;
John McCallf16aa102010-08-22 21:01:12 +0000241 CGCXXABI &ABI;
Reid Spencer5f016e22007-07-11 17:01:13 +0000242 CodeGenTypes Types;
Dan Gohman3d5aff52010-10-14 23:06:10 +0000243 CodeGenTBAA *TBAA;
Anders Carlssonb5404912009-10-07 01:06:45 +0000244
Anders Carlssonaf440352010-03-23 04:11:45 +0000245 /// VTables - Holds information about C++ vtables.
246 CodeGenVTables VTables;
Douglas Gregore17ad2f2010-04-08 16:07:47 +0000247 friend class CodeGenVTables;
248
Peter Collingbournee9265232011-07-27 20:29:46 +0000249 CGObjCRuntime* ObjCRuntime;
Peter Collingbourne8c25fc52011-09-19 21:14:35 +0000250 CGOpenCLRuntime* OpenCLRuntime;
Peter Collingbourne6c0aa5f2011-10-06 18:29:37 +0000251 CGCUDARuntime* CUDARuntime;
Ted Kremenek815c78f2008-08-05 18:50:11 +0000252 CGDebugInfo* DebugInfo;
John McCallf85e1932011-06-15 23:02:42 +0000253 ARCEntrypoints *ARCData;
Dan Gohmanb49bd272012-02-16 00:57:37 +0000254 llvm::MDNode *NoObjCARCExceptionsMetadata;
John McCallf85e1932011-06-15 23:02:42 +0000255 RREntrypoints *RRData;
Daniel Dunbar9986eab2008-07-30 16:32:24 +0000256
Rafael Espindola6a836702010-03-04 18:17:24 +0000257 // WeakRefReferences - A set of references that have only been seen via
258 // a weakref so far. This is used to remove the weak of the reference if we ever
259 // see a direct reference or a definition.
260 llvm::SmallPtrSet<llvm::GlobalValue*, 10> WeakRefReferences;
261
Chris Lattner67b00522009-03-21 09:44:56 +0000262 /// DeferredDecls - This contains all the decls which have definitions but
263 /// which are deferred for emission and therefore should only be output if
264 /// they are actually used. If a decl is in this, then it is known to have
John McCallf746aa62010-03-19 23:29:14 +0000265 /// not been referenced yet.
266 llvm::StringMap<GlobalDecl> DeferredDecls;
Daniel Dunbar02698712009-02-13 20:29:50 +0000267
Chris Lattner67b00522009-03-21 09:44:56 +0000268 /// DeferredDeclsToEmit - This is a list of deferred decls which we have seen
269 /// that *are* actually referenced. These get code generated when the module
270 /// is done.
Anders Carlsson2a131fb2009-05-05 04:44:02 +0000271 std::vector<GlobalDecl> DeferredDeclsToEmit;
Daniel Dunbar03f5ad92009-04-15 22:08:45 +0000272
John McCalld5617ee2013-01-25 22:31:03 +0000273 /// DeferredVTables - A queue of (optional) vtables to consider emitting.
274 std::vector<const CXXRecordDecl*> DeferredVTables;
275
Daniel Dunbar02698712009-02-13 20:29:50 +0000276 /// LLVMUsed - List of global values which are required to be
277 /// present in the object file; bitcast to i8*. This is used for
278 /// forcing visibility of symbols which may otherwise be optimized
279 /// out.
Chris Lattner35f38a22009-03-31 22:37:52 +0000280 std::vector<llvm::WeakVH> LLVMUsed;
Mike Stumpecc90e92009-02-13 19:12:34 +0000281
282 /// GlobalCtors - Store the list of global constructors and their respective
283 /// priorities to be emitted when the translation unit is complete.
Daniel Dunbar6bfed7e2008-08-01 00:01:51 +0000284 CtorList GlobalCtors;
285
Mike Stumpecc90e92009-02-13 19:12:34 +0000286 /// GlobalDtors - Store the list of global destructors and their respective
287 /// priorities to be emitted when the translation unit is complete.
Daniel Dunbar6bfed7e2008-08-01 00:01:51 +0000288 CtorList GlobalDtors;
289
Anders Carlsson793a9902010-06-22 16:05:32 +0000290 /// MangledDeclNames - A map of canonical GlobalDecls to their mangled names.
Chris Lattner686775d2011-07-20 06:58:45 +0000291 llvm::DenseMap<GlobalDecl, StringRef> MangledDeclNames;
Anders Carlsson793a9902010-06-22 16:05:32 +0000292 llvm::BumpPtrAllocator MangledNamesAllocator;
293
Julien Lerouge77f68bb2011-09-09 22:41:49 +0000294 /// Global annotations.
Nate Begeman532485c2008-04-18 23:43:57 +0000295 std::vector<llvm::Constant*> Annotations;
Mike Stumpecc90e92009-02-13 19:12:34 +0000296
Julien Lerouge77f68bb2011-09-09 22:41:49 +0000297 /// Map used to get unique annotation strings.
298 llvm::StringMap<llvm::Constant*> AnnotationStrings;
299
Anders Carlssonc9e20912007-08-21 00:21:21 +0000300 llvm::StringMap<llvm::Constant*> CFConstantStringMap;
John McCalla5e19c62011-08-04 01:03:22 +0000301 llvm::StringMap<llvm::GlobalVariable*> ConstantStringMap;
Eli Friedman71cba342012-03-09 03:27:46 +0000302 llvm::DenseMap<const Decl*, llvm::Constant *> StaticLocalDeclMap;
John McCall355bba72012-03-30 21:00:39 +0000303 llvm::DenseMap<const Decl*, llvm::GlobalVariable*> StaticLocalDeclGuardMap;
Fariborz Jahaniancd93b962012-01-06 22:33:54 +0000304
Fariborz Jahanianb08cfb32012-01-08 19:13:23 +0000305 llvm::DenseMap<QualType, llvm::Constant *> AtomicSetterHelperFnMap;
306 llvm::DenseMap<QualType, llvm::Constant *> AtomicGetterHelperFnMap;
Daniel Dunbar3e9df992008-08-23 18:37:06 +0000307
Daniel Dunbarefb0fa92010-03-20 04:15:41 +0000308 /// CXXGlobalInits - Global variables with initializers that need to run
Anders Carlsson89ed31d2009-08-08 23:24:23 +0000309 /// before main.
Eli Friedman6c6bda32010-01-08 00:50:11 +0000310 std::vector<llvm::Constant*> CXXGlobalInits;
John McCallbf40cb52010-07-15 23:40:35 +0000311
312 /// When a C++ decl with an initializer is deferred, null is
313 /// appended to CXXGlobalInits, and the index of that null is placed
314 /// here so that the initializer will be performed in the correct
315 /// order.
316 llvm::DenseMap<const Decl*, unsigned> DelayedCXXInitPosition;
Fariborz Jahanian9f967c52010-06-21 18:45:05 +0000317
Anton Korobeynikov4179ddd2012-11-06 22:44:45 +0000318 typedef std::pair<OrderGlobalInits, llvm::Function*> GlobalInitData;
319
320 struct GlobalInitPriorityCmp {
321 bool operator()(const GlobalInitData &LHS,
322 const GlobalInitData &RHS) const {
323 return LHS.first.priority < RHS.first.priority;
324 }
325 };
326
Fariborz Jahanian9f967c52010-06-21 18:45:05 +0000327 /// - Global variables with initializers whose order of initialization
328 /// is set by init_priority attribute.
Anton Korobeynikov4179ddd2012-11-06 22:44:45 +0000329 SmallVector<GlobalInitData, 8> PrioritizedCXXGlobalInits;
Mike Stump1eb44332009-09-09 15:08:12 +0000330
Daniel Dunbarefb0fa92010-03-20 04:15:41 +0000331 /// CXXGlobalDtors - Global destructor functions and arguments that need to
332 /// run on termination.
Chris Lattner810112e2010-06-19 05:52:45 +0000333 std::vector<std::pair<llvm::WeakVH,llvm::Constant*> > CXXGlobalDtors;
Daniel Dunbarefb0fa92010-03-20 04:15:41 +0000334
Douglas Gregorb6cbe512013-01-14 17:21:00 +0000335 /// \brief The complete set of modules that has been imported.
336 llvm::SetVector<clang::Module *> ImportedModules;
337
Douglas Gregor45c4ea72011-08-09 15:54:21 +0000338 /// @name Cache for Objective-C runtime types
339 /// @{
340
Mike Stumpecc90e92009-02-13 19:12:34 +0000341 /// CFConstantStringClassRef - Cached reference to the class for constant
342 /// strings. This value has type int * but is actually an Obj-C class pointer.
Anders Carlssonc9e20912007-08-21 00:21:21 +0000343 llvm::Constant *CFConstantStringClassRef;
Mike Stump1eb44332009-09-09 15:08:12 +0000344
Fariborz Jahanian4c733072010-10-19 17:19:29 +0000345 /// ConstantStringClassRef - Cached reference to the class for constant
Fariborz Jahanian2bb5dda2010-04-23 17:41:07 +0000346 /// strings. This value has type int * but is actually an Obj-C class pointer.
Fariborz Jahanian4c733072010-10-19 17:19:29 +0000347 llvm::Constant *ConstantStringClassRef;
Fariborz Jahanian2bb5dda2010-04-23 17:41:07 +0000348
Douglas Gregor45c4ea72011-08-09 15:54:21 +0000349 /// \brief The LLVM type corresponding to NSConstantString.
350 llvm::StructType *NSConstantStringType;
351
Douglas Gregor0815b572011-08-09 17:23:49 +0000352 /// \brief The type used to describe the state of a fast enumeration in
353 /// Objective-C's for..in loop.
354 QualType ObjCFastEnumerationStateType;
355
Douglas Gregor45c4ea72011-08-09 15:54:21 +0000356 /// @}
357
David Chisnall0d13f6f2010-01-23 02:40:42 +0000358 /// Lazily create the Objective-C runtime
359 void createObjCRuntime();
360
Peter Collingbourne8c25fc52011-09-19 21:14:35 +0000361 void createOpenCLRuntime();
Peter Collingbourne6c0aa5f2011-10-06 18:29:37 +0000362 void createCUDARuntime();
Peter Collingbourne8c25fc52011-09-19 21:14:35 +0000363
Rafael Espindolabcf6b982011-12-19 14:41:01 +0000364 bool isTriviallyRecursive(const FunctionDecl *F);
Rafael Espindolaa411d2f2011-10-26 20:41:06 +0000365 bool shouldEmitFunction(const FunctionDecl *F);
Owen Andersona1cf15f2009-07-14 23:10:40 +0000366 llvm::LLVMContext &VMContext;
Daniel Dunbar673431a2010-07-16 00:00:15 +0000367
368 /// @name Cache for Blocks Runtime Globals
369 /// @{
370
371 llvm::Constant *NSConcreteGlobalBlock;
372 llvm::Constant *NSConcreteStackBlock;
Daniel Dunbar754b9fb2010-07-16 00:00:19 +0000373
Daniel Dunbar673431a2010-07-16 00:00:15 +0000374 llvm::Constant *BlockObjectAssign;
375 llvm::Constant *BlockObjectDispose;
376
Chris Lattner9cbe4f02011-07-09 17:41:47 +0000377 llvm::Type *BlockDescriptorType;
378 llvm::Type *GenericBlockLiteralType;
John McCalld16c2cf2011-02-08 08:22:06 +0000379
380 struct {
381 int GlobalUniqueCount;
382 } Block;
Will Dietz4f45bc02013-01-18 11:30:38 +0000383
Nadav Rotem495cfa42013-03-23 06:43:35 +0000384 /// void @llvm.lifetime.start(i64 %size, i8* nocapture <ptr>)
385 llvm::Constant *LifetimeStartFn;
386
387 /// void @llvm.lifetime.end(i64 %size, i8* nocapture <ptr>)
388 llvm::Constant *LifetimeEndFn;
389
Fariborz Jahanian4904bf42012-06-26 16:06:38 +0000390 GlobalDecl initializedGlobalDecl;
John McCalld16c2cf2011-02-08 08:22:06 +0000391
Will Dietz4f45bc02013-01-18 11:30:38 +0000392 llvm::BlackList SanitizerBlacklist;
393
394 const SanitizerOptions &SanOpts;
395
Daniel Dunbar673431a2010-07-16 00:00:15 +0000396 /// @}
Reid Spencer5f016e22007-07-11 17:01:13 +0000397public:
Chandler Carruth2811ccf2009-11-12 17:24:48 +0000398 CodeGenModule(ASTContext &C, const CodeGenOptions &CodeGenOpts,
Bill Wendlinge1092df2013-02-14 08:09:20 +0000399 const TargetOptions &TargetOpts, llvm::Module &M,
400 const llvm::DataLayout &TD, DiagnosticsEngine &Diags);
Ted Kremenek815c78f2008-08-05 18:50:11 +0000401
Chris Lattner2b94fe32008-03-01 08:45:05 +0000402 ~CodeGenModule();
Mike Stumpecc90e92009-02-13 19:12:34 +0000403
Ted Kremenek815c78f2008-08-05 18:50:11 +0000404 /// Release - Finalize LLVM code generation.
405 void Release();
Daniel Dunbar208ff5e2008-08-11 18:12:00 +0000406
407 /// getObjCRuntime() - Return a reference to the configured
408 /// Objective-C runtime.
Mike Stumpecc90e92009-02-13 19:12:34 +0000409 CGObjCRuntime &getObjCRuntime() {
Peter Collingbournee9265232011-07-27 20:29:46 +0000410 if (!ObjCRuntime) createObjCRuntime();
411 return *ObjCRuntime;
Daniel Dunbar208ff5e2008-08-11 18:12:00 +0000412 }
Mike Stumpecc90e92009-02-13 19:12:34 +0000413
Sylvestre Ledruf3477c12012-09-27 10:16:10 +0000414 /// hasObjCRuntime() - Return true iff an Objective-C runtime has
Daniel Dunbar208ff5e2008-08-11 18:12:00 +0000415 /// been configured.
Peter Collingbournee9265232011-07-27 20:29:46 +0000416 bool hasObjCRuntime() { return !!ObjCRuntime; }
Daniel Dunbar208ff5e2008-08-11 18:12:00 +0000417
Peter Collingbourne6c0aa5f2011-10-06 18:29:37 +0000418 /// getOpenCLRuntime() - Return a reference to the configured OpenCL runtime.
Peter Collingbourne8c25fc52011-09-19 21:14:35 +0000419 CGOpenCLRuntime &getOpenCLRuntime() {
420 assert(OpenCLRuntime != 0);
421 return *OpenCLRuntime;
422 }
423
Peter Collingbourne6c0aa5f2011-10-06 18:29:37 +0000424 /// getCUDARuntime() - Return a reference to the configured CUDA runtime.
425 CGCUDARuntime &getCUDARuntime() {
426 assert(CUDARuntime != 0);
427 return *CUDARuntime;
428 }
429
John McCallf16aa102010-08-22 21:01:12 +0000430 /// getCXXABI() - Return a reference to the configured C++ ABI.
431 CGCXXABI &getCXXABI() { return ABI; }
Charles Davis3a811f12010-05-25 19:52:27 +0000432
John McCallf85e1932011-06-15 23:02:42 +0000433 ARCEntrypoints &getARCEntrypoints() const {
David Blaikie4e4d0842012-03-11 07:00:24 +0000434 assert(getLangOpts().ObjCAutoRefCount && ARCData != 0);
John McCallf85e1932011-06-15 23:02:42 +0000435 return *ARCData;
436 }
437
438 RREntrypoints &getRREntrypoints() const {
439 assert(RRData != 0);
440 return *RRData;
441 }
442
Eli Friedman71cba342012-03-09 03:27:46 +0000443 llvm::Constant *getStaticLocalDeclAddress(const VarDecl *D) {
444 return StaticLocalDeclMap[D];
Fariborz Jahanian65ad5a42010-04-18 21:01:23 +0000445 }
Fariborz Jahanian63326a52010-04-19 18:15:02 +0000446 void setStaticLocalDeclAddress(const VarDecl *D,
Eli Friedman71cba342012-03-09 03:27:46 +0000447 llvm::Constant *C) {
448 StaticLocalDeclMap[D] = C;
Fariborz Jahanian65ad5a42010-04-18 21:01:23 +0000449 }
450
John McCall355bba72012-03-30 21:00:39 +0000451 llvm::GlobalVariable *getStaticLocalDeclGuardAddress(const VarDecl *D) {
452 return StaticLocalDeclGuardMap[D];
453 }
454 void setStaticLocalDeclGuardAddress(const VarDecl *D,
455 llvm::GlobalVariable *C) {
456 StaticLocalDeclGuardMap[D] = C;
457 }
458
Fariborz Jahanianb08cfb32012-01-08 19:13:23 +0000459 llvm::Constant *getAtomicSetterHelperFnMap(QualType Ty) {
460 return AtomicSetterHelperFnMap[Ty];
Fariborz Jahaniancd93b962012-01-06 22:33:54 +0000461 }
Fariborz Jahanianb08cfb32012-01-08 19:13:23 +0000462 void setAtomicSetterHelperFnMap(QualType Ty,
Fariborz Jahaniancd93b962012-01-06 22:33:54 +0000463 llvm::Constant *Fn) {
Fariborz Jahanianb08cfb32012-01-08 19:13:23 +0000464 AtomicSetterHelperFnMap[Ty] = Fn;
465 }
466
467 llvm::Constant *getAtomicGetterHelperFnMap(QualType Ty) {
468 return AtomicGetterHelperFnMap[Ty];
469 }
470 void setAtomicGetterHelperFnMap(QualType Ty,
471 llvm::Constant *Fn) {
472 AtomicGetterHelperFnMap[Ty] = Fn;
Fariborz Jahaniancd93b962012-01-06 22:33:54 +0000473 }
474
Devang Patelaa112892011-03-07 18:45:56 +0000475 CGDebugInfo *getModuleDebugInfo() { return DebugInfo; }
Devang Patel5de7a0e2011-03-07 18:29:53 +0000476
Dan Gohmanb49bd272012-02-16 00:57:37 +0000477 llvm::MDNode *getNoObjCARCExceptionsMetadata() {
478 if (!NoObjCARCExceptionsMetadata)
479 NoObjCARCExceptionsMetadata =
480 llvm::MDNode::get(getLLVMContext(),
481 SmallVector<llvm::Value*,1>());
482 return NoObjCARCExceptionsMetadata;
483 }
484
Reid Spencer5f016e22007-07-11 17:01:13 +0000485 ASTContext &getContext() const { return Context; }
Chandler Carruth2811ccf2009-11-12 17:24:48 +0000486 const CodeGenOptions &getCodeGenOpts() const { return CodeGenOpts; }
David Blaikie4e4d0842012-03-11 07:00:24 +0000487 const LangOptions &getLangOpts() const { return LangOpts; }
Reid Spencer5f016e22007-07-11 17:01:13 +0000488 llvm::Module &getModule() const { return TheModule; }
489 CodeGenTypes &getTypes() { return Types; }
Anders Carlssonaf440352010-03-23 04:11:45 +0000490 CodeGenVTables &getVTables() { return VTables; }
Peter Collingbourne1d2b3172011-09-26 01:56:30 +0000491 VTableContext &getVTableContext() { return VTables.getVTableContext(); }
David Blaikied6471f72011-09-25 23:23:43 +0000492 DiagnosticsEngine &getDiags() const { return Diags; }
Micah Villmow25a6a842012-10-08 16:25:52 +0000493 const llvm::DataLayout &getDataLayout() const { return TheDataLayout; }
Douglas Gregorbcfd1f52011-09-02 00:18:52 +0000494 const TargetInfo &getTarget() const { return Context.getTargetInfo(); }
Owen Andersona1cf15f2009-07-14 23:10:40 +0000495 llvm::LLVMContext &getLLVMContext() { return VMContext; }
Chris Lattnerea044322010-07-29 02:01:43 +0000496 const TargetCodeGenInfo &getTargetCodeGenInfo();
John McCall6374c332010-03-06 00:35:14 +0000497 bool isTargetDarwin() const;
Daniel Dunbarbd012ff2008-07-29 23:18:29 +0000498
John McCallbc7fbf02011-02-26 08:07:02 +0000499 bool shouldUseTBAA() const { return TBAA != 0; }
500
Dan Gohman3d5aff52010-10-14 23:06:10 +0000501 llvm::MDNode *getTBAAInfo(QualType QTy);
Kostya Serebryany8cb4a072012-03-26 17:03:51 +0000502 llvm::MDNode *getTBAAInfoForVTablePtr();
Dan Gohmanb22c7dc2012-09-28 21:58:29 +0000503 llvm::MDNode *getTBAAStructInfo(QualType QTy);
Dan Gohman3d5aff52010-10-14 23:06:10 +0000504
Richard Smitha9b21d22012-02-17 06:48:11 +0000505 bool isTypeConstant(QualType QTy, bool ExcludeCtorDtor);
506
John McCall9eda3ab2013-03-07 21:37:17 +0000507 bool isPaddedAtomicType(QualType type);
508 bool isPaddedAtomicType(const AtomicType *type);
509
Dan Gohman3d5aff52010-10-14 23:06:10 +0000510 static void DecorateInstruction(llvm::Instruction *Inst,
511 llvm::MDNode *TBAAInfo);
512
John McCallbc8d40d2011-06-24 21:55:10 +0000513 /// getSize - Emit the given number of characters as a value of type size_t.
514 llvm::ConstantInt *getSize(CharUnits numChars);
515
Daniel Dunbar04d40782009-04-14 06:00:08 +0000516 /// setGlobalVisibility - Set the visibility for the given LLVM
517 /// GlobalValue.
Anders Carlsson0ffeaad2011-01-29 19:39:23 +0000518 void setGlobalVisibility(llvm::GlobalValue *GV, const NamedDecl *D) const;
Daniel Dunbar04d40782009-04-14 06:00:08 +0000519
Hans Wennborgde981f32012-06-28 08:01:44 +0000520 /// setTLSMode - Set the TLS mode for the given LLVM GlobalVariable
521 /// for the thread-local variable declaration D.
522 void setTLSMode(llvm::GlobalVariable *GV, const VarDecl &D) const;
523
Anders Carlssonfa2e99f2011-01-29 20:24:48 +0000524 /// TypeVisibilityKind - The kind of global variable that is passed to
525 /// setTypeVisibility
526 enum TypeVisibilityKind {
527 TVK_ForVTT,
528 TVK_ForVTable,
John McCallbda0d6b2011-03-27 09:00:25 +0000529 TVK_ForConstructionVTable,
Anders Carlssonfa2e99f2011-01-29 20:24:48 +0000530 TVK_ForRTTI,
531 TVK_ForRTTIName
532 };
533
John McCallcbfe5022010-08-04 08:34:44 +0000534 /// setTypeVisibility - Set the visibility for the given global
535 /// value which holds information about a type.
536 void setTypeVisibility(llvm::GlobalValue *GV, const CXXRecordDecl *D,
Anders Carlssonfa2e99f2011-01-29 20:24:48 +0000537 TypeVisibilityKind TVK) const;
John McCallcbfe5022010-08-04 08:34:44 +0000538
Anders Carlssonc7e98fa2011-01-29 20:59:35 +0000539 static llvm::GlobalValue::VisibilityTypes GetLLVMVisibility(Visibility V) {
540 switch (V) {
541 case DefaultVisibility: return llvm::GlobalValue::DefaultVisibility;
542 case HiddenVisibility: return llvm::GlobalValue::HiddenVisibility;
543 case ProtectedVisibility: return llvm::GlobalValue::ProtectedVisibility;
544 }
545 llvm_unreachable("unknown visibility!");
Anders Carlssonc7e98fa2011-01-29 20:59:35 +0000546 }
547
John McCalld46f9852010-02-19 01:32:20 +0000548 llvm::Constant *GetAddrOfGlobal(GlobalDecl GD) {
549 if (isa<CXXConstructorDecl>(GD.getDecl()))
550 return GetAddrOfCXXConstructor(cast<CXXConstructorDecl>(GD.getDecl()),
551 GD.getCtorType());
552 else if (isa<CXXDestructorDecl>(GD.getDecl()))
553 return GetAddrOfCXXDestructor(cast<CXXDestructorDecl>(GD.getDecl()),
554 GD.getDtorType());
555 else if (isa<FunctionDecl>(GD.getDecl()))
556 return GetAddrOfFunction(GD);
557 else
558 return GetAddrOfGlobalVar(cast<VarDecl>(GD.getDecl()));
559 }
560
Anders Carlsson3bd62022011-01-29 18:20:20 +0000561 /// CreateOrReplaceCXXRuntimeVariable - Will return a global variable of the given
562 /// type. If a variable with a different type already exists then a new
563 /// variable with the right type will be created and all uses of the old
564 /// variable will be replaced with a bitcast to the new variable.
565 llvm::GlobalVariable *
Chris Lattner686775d2011-07-20 06:58:45 +0000566 CreateOrReplaceCXXRuntimeVariable(StringRef Name, llvm::Type *Ty,
Anders Carlsson3bd62022011-01-29 18:20:20 +0000567 llvm::GlobalValue::LinkageTypes Linkage);
568
Peter Collingbourne4dc34eb2012-05-20 21:08:35 +0000569 /// GetGlobalVarAddressSpace - Return the address space of the underlying
570 /// global variable for D, as determined by its declaration. Normally this
571 /// is the same as the address space of D's type, but in CUDA, address spaces
572 /// are associated with declarations, not types.
573 unsigned GetGlobalVarAddressSpace(const VarDecl *D, unsigned AddrSpace);
574
Mike Stumpecc90e92009-02-13 19:12:34 +0000575 /// GetAddrOfGlobalVar - Return the llvm::Constant for the address of the
Chris Lattner570585c2009-03-21 09:16:30 +0000576 /// given global variable. If Ty is non-null and if the global doesn't exist,
577 /// then it will be greated with the specified type instead of whatever the
578 /// normal requested type would be.
579 llvm::Constant *GetAddrOfGlobalVar(const VarDecl *D,
Chris Lattner2acc6e32011-07-18 04:24:23 +0000580 llvm::Type *Ty = 0);
Daniel Dunbarbd012ff2008-07-29 23:18:29 +0000581
John McCall1de4d4e2011-04-07 08:22:57 +0000582
Chris Lattner34809502009-03-21 08:53:37 +0000583 /// GetAddrOfFunction - Return the address of the given function. If Ty is
584 /// non-null, then this function will use the specified type if it has to
585 /// create it.
Chris Lattnerb4880ba2009-05-12 21:21:08 +0000586 llvm::Constant *GetAddrOfFunction(GlobalDecl GD,
Chris Lattner2acc6e32011-07-18 04:24:23 +0000587 llvm::Type *Ty = 0,
Anders Carlsson1faa89f2011-02-05 04:35:53 +0000588 bool ForVTable = false);
Daniel Dunbar61432932008-08-13 23:20:05 +0000589
Anders Carlsson1d7088d2009-12-17 07:09:17 +0000590 /// GetAddrOfRTTIDescriptor - Get the address of the RTTI descriptor
591 /// for the given type.
John McCall9dffe6f2010-04-30 01:15:21 +0000592 llvm::Constant *GetAddrOfRTTIDescriptor(QualType Ty, bool ForEH = false);
Anders Carlsson31b7f522009-12-11 02:46:30 +0000593
Nico Weberc5f80462012-10-11 10:13:44 +0000594 /// GetAddrOfUuidDescriptor - Get the address of a uuid descriptor .
595 llvm::Constant *GetAddrOfUuidDescriptor(const CXXUuidofExpr* E);
596
Anders Carlsson19879c92010-03-23 17:17:29 +0000597 /// GetAddrOfThunk - Get the address of the thunk for the given global decl.
Anders Carlsson84c49e42011-02-06 17:15:43 +0000598 llvm::Constant *GetAddrOfThunk(GlobalDecl GD, const ThunkInfo &Thunk);
Anders Carlsson19879c92010-03-23 17:17:29 +0000599
Rafael Espindola6a836702010-03-04 18:17:24 +0000600 /// GetWeakRefReference - Get a reference to the target of VD.
601 llvm::Constant *GetWeakRefReference(const ValueDecl *VD);
602
Anders Carlssonbb7e17b2010-01-31 01:36:53 +0000603 /// GetNonVirtualBaseClassOffset - Returns the offset from a derived class to
Anders Carlssone04d45e2010-04-24 21:27:51 +0000604 /// a class. Returns null if the offset is 0.
Anders Carlssona04efdf2010-04-24 21:23:59 +0000605 llvm::Constant *
606 GetNonVirtualBaseClassOffset(const CXXRecordDecl *ClassDecl,
John McCallf871d0c2010-08-07 06:22:56 +0000607 CastExpr::path_const_iterator PathBegin,
608 CastExpr::path_const_iterator PathEnd);
John McCalld16c2cf2011-02-08 08:22:06 +0000609
John McCallf0c11f72011-03-31 08:03:29 +0000610 /// A pair of helper functions for a __block variable.
611 class ByrefHelpers : public llvm::FoldingSetNode {
612 public:
613 llvm::Constant *CopyHelper;
614 llvm::Constant *DisposeHelper;
615
616 /// The alignment of the field. This is important because
617 /// different offsets to the field within the byref struct need to
618 /// have different helper functions.
619 CharUnits Alignment;
620
621 ByrefHelpers(CharUnits alignment) : Alignment(alignment) {}
622 virtual ~ByrefHelpers();
623
624 void Profile(llvm::FoldingSetNodeID &id) const {
625 id.AddInteger(Alignment.getQuantity());
626 profileImpl(id);
627 }
628 virtual void profileImpl(llvm::FoldingSetNodeID &id) const = 0;
629
630 virtual bool needsCopy() const { return true; }
631 virtual void emitCopy(CodeGenFunction &CGF,
632 llvm::Value *dest, llvm::Value *src) = 0;
633
634 virtual bool needsDispose() const { return true; }
635 virtual void emitDispose(CodeGenFunction &CGF, llvm::Value *field) = 0;
636 };
637
638 llvm::FoldingSet<ByrefHelpers> ByrefHelpersCache;
John McCalld16c2cf2011-02-08 08:22:06 +0000639
John McCall8178df32011-02-22 22:38:33 +0000640 /// getUniqueBlockCount - Fetches the global unique block count.
641 int getUniqueBlockCount() { return ++Block.GlobalUniqueCount; }
Fariborz Jahanian4904bf42012-06-26 16:06:38 +0000642
John McCalld16c2cf2011-02-08 08:22:06 +0000643 /// getBlockDescriptorType - Fetches the type of a generic block
644 /// descriptor.
Chris Lattner9cbe4f02011-07-09 17:41:47 +0000645 llvm::Type *getBlockDescriptorType();
John McCalld16c2cf2011-02-08 08:22:06 +0000646
647 /// getGenericBlockLiteralType - The type of a generic block literal.
Chris Lattner9cbe4f02011-07-09 17:41:47 +0000648 llvm::Type *getGenericBlockLiteralType();
John McCalld16c2cf2011-02-08 08:22:06 +0000649
650 /// GetAddrOfGlobalBlock - Gets the address of a block which
651 /// requires no captures.
652 llvm::Constant *GetAddrOfGlobalBlock(const BlockExpr *BE, const char *);
Anders Carlssona04efdf2010-04-24 21:23:59 +0000653
Mike Stumpecc90e92009-02-13 19:12:34 +0000654 /// GetAddrOfConstantCFString - Return a pointer to a constant CFString object
655 /// for the given string.
Steve Naroff8d4141f2009-04-01 13:55:36 +0000656 llvm::Constant *GetAddrOfConstantCFString(const StringLiteral *Literal);
Fariborz Jahanian33e982b2010-04-22 20:26:39 +0000657
Fariborz Jahanian4c733072010-10-19 17:19:29 +0000658 /// GetAddrOfConstantString - Return a pointer to a constant NSString object
659 /// for the given string. Or a user defined String object as defined via
660 /// -fconstant-string-class=class_name option.
661 llvm::Constant *GetAddrOfConstantString(const StringLiteral *Literal);
Chris Lattnera7ad98f2008-02-11 00:02:17 +0000662
Eli Friedman64f45a22011-11-01 02:23:42 +0000663 /// GetConstantArrayFromStringLiteral - Return a constant array for the given
664 /// string.
665 llvm::Constant *GetConstantArrayFromStringLiteral(const StringLiteral *E);
666
Mike Stumpecc90e92009-02-13 19:12:34 +0000667 /// GetAddrOfConstantStringFromLiteral - Return a pointer to a constant array
668 /// for the given string literal.
Daniel Dunbar61432932008-08-13 23:20:05 +0000669 llvm::Constant *GetAddrOfConstantStringFromLiteral(const StringLiteral *S);
Daniel Dunbar1e049762008-08-10 20:25:57 +0000670
Chris Lattnereaf2bb82009-02-24 22:18:39 +0000671 /// GetAddrOfConstantStringFromObjCEncode - Return a pointer to a constant
672 /// array for the given ObjCEncodeExpr node.
673 llvm::Constant *GetAddrOfConstantStringFromObjCEncode(const ObjCEncodeExpr *);
Mike Stump1eb44332009-09-09 15:08:12 +0000674
Daniel Dunbar61432932008-08-13 23:20:05 +0000675 /// GetAddrOfConstantString - Returns a pointer to a character array
Mike Stumpecc90e92009-02-13 19:12:34 +0000676 /// containing the literal. This contents are exactly that of the given
677 /// string, i.e. it will not be null terminated automatically; see
678 /// GetAddrOfConstantCString. Note that whether the result is actually a
679 /// pointer to an LLVM constant depends on Feature.WriteableStrings.
Daniel Dunbar61432932008-08-13 23:20:05 +0000680 ///
681 /// The result has pointer to array type.
Daniel Dunbar5fabf9d2008-10-17 21:56:50 +0000682 ///
683 /// \param GlobalName If provided, the name to use for the global
684 /// (if one is created).
Chris Lattner686775d2011-07-20 06:58:45 +0000685 llvm::Constant *GetAddrOfConstantString(StringRef Str,
John McCalla5e19c62011-08-04 01:03:22 +0000686 const char *GlobalName=0,
687 unsigned Alignment=1);
Daniel Dunbar61432932008-08-13 23:20:05 +0000688
Mike Stumpecc90e92009-02-13 19:12:34 +0000689 /// GetAddrOfConstantCString - Returns a pointer to a character array
690 /// containing the literal and a terminating '\0' character. The result has
691 /// pointer to array type.
Daniel Dunbar5fabf9d2008-10-17 21:56:50 +0000692 ///
Mike Stumpecc90e92009-02-13 19:12:34 +0000693 /// \param GlobalName If provided, the name to use for the global (if one is
694 /// created).
Daniel Dunbar5fabf9d2008-10-17 21:56:50 +0000695 llvm::Constant *GetAddrOfConstantCString(const std::string &str,
John McCalla5e19c62011-08-04 01:03:22 +0000696 const char *GlobalName=0,
697 unsigned Alignment=1);
Richard Smith7401cf52011-11-22 22:48:32 +0000698
699 /// GetAddrOfConstantCompoundLiteral - Returns a pointer to a constant global
700 /// variable for the given file-scope compound literal expression.
701 llvm::Constant *GetAddrOfConstantCompoundLiteral(const CompoundLiteralExpr*E);
John McCallf85e1932011-06-15 23:02:42 +0000702
Douglas Gregor0815b572011-08-09 17:23:49 +0000703 /// \brief Retrieve the record type that describes the state of an
704 /// Objective-C fast enumeration loop (for..in).
705 QualType getObjCFastEnumerationStateType();
706
Anders Carlsson363c1842009-04-16 23:57:24 +0000707 /// GetAddrOfCXXConstructor - Return the address of the constructor of the
708 /// given type.
John McCall1f6f9612011-03-09 08:12:35 +0000709 llvm::GlobalValue *GetAddrOfCXXConstructor(const CXXConstructorDecl *ctor,
710 CXXCtorType ctorType,
711 const CGFunctionInfo *fnInfo = 0);
Anders Carlsson27ae5362009-04-17 01:58:57 +0000712
713 /// GetAddrOfCXXDestructor - Return the address of the constructor of the
714 /// given type.
John McCall1f6f9612011-03-09 08:12:35 +0000715 llvm::GlobalValue *GetAddrOfCXXDestructor(const CXXDestructorDecl *dtor,
716 CXXDtorType dtorType,
717 const CGFunctionInfo *fnInfo = 0);
Mike Stump1eb44332009-09-09 15:08:12 +0000718
Daniel Dunbar41071de2008-08-15 23:26:23 +0000719 /// getBuiltinLibFunction - Given a builtin id for a function like
720 /// "__builtin_fabsf", return a Function* for "fabsf".
Daniel Dunbar34771b52009-09-14 04:33:21 +0000721 llvm::Value *getBuiltinLibFunction(const FunctionDecl *FD,
722 unsigned BuiltinID);
Daniel Dunbar61432932008-08-13 23:20:05 +0000723
Chris Lattner2d3ba4f2011-07-23 17:14:25 +0000724 llvm::Function *getIntrinsic(unsigned IID, ArrayRef<llvm::Type*> Tys =
725 ArrayRef<llvm::Type*>());
Daniel Dunbarbd012ff2008-07-29 23:18:29 +0000726
Daniel Dunbar41071de2008-08-15 23:26:23 +0000727 /// EmitTopLevelDecl - Emit code for a single top level declaration.
728 void EmitTopLevelDecl(Decl *D);
Daniel Dunbarbd012ff2008-07-29 23:18:29 +0000729
Rafael Espindola02503932012-03-08 15:51:03 +0000730 /// HandleCXXStaticMemberVarInstantiation - Tell the consumer that this
731 // variable has been instantiated.
732 void HandleCXXStaticMemberVarInstantiation(VarDecl *VD);
Rafael Espindola234fe652012-03-05 10:54:55 +0000733
Daniel Dunbar02698712009-02-13 20:29:50 +0000734 /// AddUsedGlobal - Add a global which should be forced to be
735 /// present in the object file; these are emitted to the llvm.used
736 /// metadata global.
737 void AddUsedGlobal(llvm::GlobalValue *GV);
738
Daniel Dunbarefb0fa92010-03-20 04:15:41 +0000739 /// AddCXXDtorEntry - Add a destructor and object to add to the C++ global
740 /// destructor function.
Chris Lattner810112e2010-06-19 05:52:45 +0000741 void AddCXXDtorEntry(llvm::Constant *DtorFn, llvm::Constant *Object) {
742 CXXGlobalDtors.push_back(std::make_pair(DtorFn, Object));
743 }
Daniel Dunbarefb0fa92010-03-20 04:15:41 +0000744
Chris Lattner74391b42009-03-22 21:03:39 +0000745 /// CreateRuntimeFunction - Create a new runtime function with the specified
746 /// type and name.
Chris Lattner2acc6e32011-07-18 04:24:23 +0000747 llvm::Constant *CreateRuntimeFunction(llvm::FunctionType *Ty,
Chris Lattner686775d2011-07-20 06:58:45 +0000748 StringRef Name,
Bill Wendlingc4c62fd2013-01-31 00:30:05 +0000749 llvm::AttributeSet ExtraAttrs =
750 llvm::AttributeSet());
Chris Lattner74391b42009-03-22 21:03:39 +0000751 /// CreateRuntimeVariable - Create a new runtime global variable with the
752 /// specified type and name.
Chris Lattner2acc6e32011-07-18 04:24:23 +0000753 llvm::Constant *CreateRuntimeVariable(llvm::Type *Ty,
Chris Lattner686775d2011-07-20 06:58:45 +0000754 StringRef Name);
Daniel Dunbarf1968f22008-10-01 00:49:24 +0000755
Daniel Dunbar673431a2010-07-16 00:00:15 +0000756 ///@name Custom Blocks Runtime Interfaces
757 ///@{
758
759 llvm::Constant *getNSConcreteGlobalBlock();
760 llvm::Constant *getNSConcreteStackBlock();
761 llvm::Constant *getBlockObjectAssign();
762 llvm::Constant *getBlockObjectDispose();
763
764 ///@}
765
Nadav Rotem495cfa42013-03-23 06:43:35 +0000766 llvm::Constant *getLLVMLifetimeStartFn();
767 llvm::Constant *getLLVMLifetimeEndFn();
768
Devang Patele80d5672011-03-23 16:29:39 +0000769 // UpdateCompleteType - Make sure that this type is translated.
770 void UpdateCompletedType(const TagDecl *TD);
Daniel Dunbard60f2fb2009-02-17 18:43:32 +0000771
John McCall5808ce42011-02-03 08:15:49 +0000772 llvm::Constant *getMemberPointerConstant(const UnaryOperator *e);
773
Richard Smith2d6a5672012-01-14 04:30:29 +0000774 /// EmitConstantInit - Try to emit the initializer for the given declaration
775 /// as a constant; returns 0 if the expression cannot be emitted as a
776 /// constant.
777 llvm::Constant *EmitConstantInit(const VarDecl &D, CodeGenFunction *CGF = 0);
778
Daniel Dunbard60f2fb2009-02-17 18:43:32 +0000779 /// EmitConstantExpr - Try to emit the given expression as a
780 /// constant; returns 0 if the expression cannot be emitted as a
781 /// constant.
Anders Carlssone9352cc2009-04-08 04:48:15 +0000782 llvm::Constant *EmitConstantExpr(const Expr *E, QualType DestType,
783 CodeGenFunction *CGF = 0);
Daniel Dunbard60f2fb2009-02-17 18:43:32 +0000784
Richard Smitha3ca41f2012-03-02 23:27:11 +0000785 /// EmitConstantValue - Emit the given constant value as a constant, in the
786 /// type's scalar representation.
Richard Smith2d6a5672012-01-14 04:30:29 +0000787 llvm::Constant *EmitConstantValue(const APValue &Value, QualType DestType,
788 CodeGenFunction *CGF = 0);
789
Richard Smitha3ca41f2012-03-02 23:27:11 +0000790 /// EmitConstantValueForMemory - Emit the given constant value as a constant,
791 /// in the type's memory representation.
792 llvm::Constant *EmitConstantValueForMemory(const APValue &Value,
793 QualType DestType,
794 CodeGenFunction *CGF = 0);
795
Eli Friedman0f593122009-04-13 21:47:26 +0000796 /// EmitNullConstant - Return the result of value-initializing the given
797 /// type, i.e. a null expression of the given type. This is usually,
798 /// but not always, an LLVM null constant.
799 llvm::Constant *EmitNullConstant(QualType T);
800
Eli Friedman2ed7cb62011-10-14 02:27:24 +0000801 /// EmitNullConstantForBase - Return a null constant appropriate for
802 /// zero-initializing a base class with the given type. This is usually,
803 /// but not always, an LLVM null constant.
804 llvm::Constant *EmitNullConstantForBase(const CXXRecordDecl *Record);
805
John McCall32096692011-03-18 02:56:14 +0000806 /// Error - Emit a general error that something can't be done.
Chandler Carruth0f30a122012-03-30 19:44:53 +0000807 void Error(SourceLocation loc, StringRef error);
John McCall32096692011-03-18 02:56:14 +0000808
Daniel Dunbar488e9932008-08-16 00:56:44 +0000809 /// ErrorUnsupported - Print out an error that codegen doesn't support the
Daniel Dunbar90df4b62008-09-04 03:43:08 +0000810 /// specified stmt yet.
Mike Stumpecc90e92009-02-13 19:12:34 +0000811 /// \param OmitOnError - If true, then this error should only be emitted if no
812 /// other errors have been reported.
813 void ErrorUnsupported(const Stmt *S, const char *Type,
Daniel Dunbar90df4b62008-09-04 03:43:08 +0000814 bool OmitOnError=false);
Mike Stumpecc90e92009-02-13 19:12:34 +0000815
Daniel Dunbar488e9932008-08-16 00:56:44 +0000816 /// ErrorUnsupported - Print out an error that codegen doesn't support the
Chris Lattnerc6fdc342008-01-12 07:05:38 +0000817 /// specified decl yet.
Mike Stumpecc90e92009-02-13 19:12:34 +0000818 /// \param OmitOnError - If true, then this error should only be emitted if no
819 /// other errors have been reported.
Daniel Dunbar90df4b62008-09-04 03:43:08 +0000820 void ErrorUnsupported(const Decl *D, const char *Type,
821 bool OmitOnError=false);
Dan Gohman4f8d1232008-05-22 00:50:06 +0000822
Daniel Dunbar0e4f40e2009-04-17 00:48:04 +0000823 /// SetInternalFunctionAttributes - Set the attributes on the LLVM
824 /// function for the given decl and function info. This applies
825 /// attributes necessary for handling the ABI as well as user
826 /// specified attributes like section.
827 void SetInternalFunctionAttributes(const Decl *D, llvm::Function *F,
828 const CGFunctionInfo &FI);
Daniel Dunbarf80519b2008-09-04 23:41:35 +0000829
Daniel Dunbar7dbd8192009-04-14 07:08:30 +0000830 /// SetLLVMFunctionAttributes - Set the LLVM function attributes
831 /// (sext, zext, etc).
832 void SetLLVMFunctionAttributes(const Decl *D,
833 const CGFunctionInfo &Info,
834 llvm::Function *F);
Daniel Dunbarb7688072008-09-10 00:41:16 +0000835
Daniel Dunbar7c65e992009-04-14 08:05:55 +0000836 /// SetLLVMFunctionAttributesForDefinition - Set the LLVM function attributes
837 /// which only apply to a function definintion.
838 void SetLLVMFunctionAttributesForDefinition(const Decl *D, llvm::Function *F);
839
Sylvestre Ledruf3477c12012-09-27 10:16:10 +0000840 /// ReturnTypeUsesSRet - Return true iff the given type uses 'sret' when used
Mike Stumpecc90e92009-02-13 19:12:34 +0000841 /// as a return type.
Daniel Dunbardacf9dd2010-07-14 23:39:36 +0000842 bool ReturnTypeUsesSRet(const CGFunctionInfo &FI);
843
Sylvestre Ledruf3477c12012-09-27 10:16:10 +0000844 /// ReturnTypeUsesFPRet - Return true iff the given type uses 'fpret' when
Anders Carlssoneea64802011-10-31 16:27:11 +0000845 /// used as a return type.
Daniel Dunbardacf9dd2010-07-14 23:39:36 +0000846 bool ReturnTypeUsesFPRet(QualType ResultType);
Daniel Dunbarb7688072008-09-10 00:41:16 +0000847
Sylvestre Ledruf3477c12012-09-27 10:16:10 +0000848 /// ReturnTypeUsesFP2Ret - Return true iff the given type uses 'fp2ret' when
Anders Carlssoneea64802011-10-31 16:27:11 +0000849 /// used as a return type.
850 bool ReturnTypeUsesFP2Ret(QualType ResultType);
851
Daniel Dunbarca6408c2009-09-12 00:59:20 +0000852 /// ConstructAttributeList - Get the LLVM attributes and calling convention to
853 /// use for a particular function type.
854 ///
855 /// \param Info - The function type information.
856 /// \param TargetDecl - The decl these attributes are being constructed
857 /// for. If supplied the attributes applied to this decl may contribute to the
858 /// function attributes and calling convention.
859 /// \param PAL [out] - On return, the attribute list to use.
860 /// \param CallingConv [out] - On return, the LLVM calling convention to use.
Daniel Dunbar88b53962009-02-02 22:03:45 +0000861 void ConstructAttributeList(const CGFunctionInfo &Info,
862 const Decl *TargetDecl,
Daniel Dunbarca6408c2009-09-12 00:59:20 +0000863 AttributeListType &PAL,
Bill Wendling94236e72013-02-22 00:13:35 +0000864 unsigned &CallingConv,
865 bool AttrOnCallSite);
Daniel Dunbarb7688072008-09-10 00:41:16 +0000866
Chris Lattner686775d2011-07-20 06:58:45 +0000867 StringRef getMangledName(GlobalDecl GD);
Peter Collingbourne14110472011-01-13 18:57:25 +0000868 void getBlockMangledName(GlobalDecl GD, MangleBuffer &Buffer,
869 const BlockDecl *BD);
Douglas Gregorb6c8c8b2009-04-21 17:11:58 +0000870
871 void EmitTentativeDefinition(const VarDecl *D);
Mike Stumpf1216772009-07-31 18:25:34 +0000872
Douglas Gregor6fb745b2010-05-13 16:44:06 +0000873 void EmitVTable(CXXRecordDecl *Class, bool DefinitionRequired);
874
John McCalld46f9852010-02-19 01:32:20 +0000875 llvm::GlobalVariable::LinkageTypes
876 getFunctionLinkage(const FunctionDecl *FD);
877
John McCall8b242332010-05-25 04:30:21 +0000878 void setFunctionLinkage(const FunctionDecl *FD, llvm::GlobalValue *V) {
879 V->setLinkage(getFunctionLinkage(FD));
880 }
881
Anders Carlsson046c2942010-04-17 20:15:18 +0000882 /// getVTableLinkage - Return the appropriate linkage for the vtable, VTT,
Douglas Gregor4b0f21c2010-01-06 20:27:16 +0000883 /// and type information of the given class.
Anders Carlsson3a717f72011-01-24 02:04:33 +0000884 llvm::GlobalVariable::LinkageTypes getVTableLinkage(const CXXRecordDecl *RD);
Ken Dyck687cc4a2010-01-26 13:48:07 +0000885
886 /// GetTargetTypeStoreSize - Return the store size, in character units, of
887 /// the given LLVM type.
Chris Lattner2acc6e32011-07-18 04:24:23 +0000888 CharUnits GetTargetTypeStoreSize(llvm::Type *Ty) const;
Fariborz Jahanian354e7122010-10-27 16:21:54 +0000889
890 /// GetLLVMLinkageVarDefinition - Returns LLVM linkage for a global
891 /// variable.
892 llvm::GlobalValue::LinkageTypes
893 GetLLVMLinkageVarDefinition(const VarDecl *D,
894 llvm::GlobalVariable *GV);
895
Julien Lerouge77f68bb2011-09-09 22:41:49 +0000896 /// Emit all the global annotations.
897 void EmitGlobalAnnotations();
898
899 /// Emit an annotation string.
Dmitri Gribenkocfa88f82013-01-12 19:30:44 +0000900 llvm::Constant *EmitAnnotationString(StringRef Str);
Julien Lerouge77f68bb2011-09-09 22:41:49 +0000901
902 /// Emit the annotation's translation unit.
903 llvm::Constant *EmitAnnotationUnit(SourceLocation Loc);
904
905 /// Emit the annotation line number.
906 llvm::Constant *EmitAnnotationLineNo(SourceLocation L);
907
908 /// EmitAnnotateAttr - Generate the llvm::ConstantStruct which contains the
909 /// annotation information for a given GlobalValue. The annotation struct is
910 /// {i8 *, i8 *, i8 *, i32}. The first field is a constant expression, the
911 /// GlobalValue being annotated. The second field is the constant string
912 /// created from the AnnotateAttr's annotation. The third field is a constant
913 /// string containing the name of the translation unit. The fourth field is
914 /// the line number in the file of the annotated value declaration.
915 llvm::Constant *EmitAnnotateAttr(llvm::GlobalValue *GV,
916 const AnnotateAttr *AA,
917 SourceLocation L);
918
919 /// Add global annotations that are set on D, for the global GV. Those
920 /// annotations are emitted during finalization of the LLVM code.
921 void AddGlobalAnnotations(const ValueDecl *D, llvm::GlobalValue *GV);
922
Will Dietz4f45bc02013-01-18 11:30:38 +0000923 const llvm::BlackList &getSanitizerBlacklist() const {
924 return SanitizerBlacklist;
925 }
926
927 const SanitizerOptions &getSanOpts() const { return SanOpts; }
928
John McCalld5617ee2013-01-25 22:31:03 +0000929 void addDeferredVTable(const CXXRecordDecl *RD) {
930 DeferredVTables.push_back(RD);
931 }
932
Chris Lattner9cd4fe42007-12-02 07:09:19 +0000933private:
Chris Lattner686775d2011-07-20 06:58:45 +0000934 llvm::GlobalValue *GetGlobalValue(StringRef Ref);
Mike Stump1eb44332009-09-09 15:08:12 +0000935
Chris Lattner686775d2011-07-20 06:58:45 +0000936 llvm::Constant *GetOrCreateLLVMFunction(StringRef MangledName,
Chris Lattner2acc6e32011-07-18 04:24:23 +0000937 llvm::Type *Ty,
Anders Carlsson1faa89f2011-02-05 04:35:53 +0000938 GlobalDecl D,
John McCallf85e1932011-06-15 23:02:42 +0000939 bool ForVTable,
Bill Wendlingc4c62fd2013-01-31 00:30:05 +0000940 llvm::AttributeSet ExtraAttrs =
941 llvm::AttributeSet());
Chris Lattner686775d2011-07-20 06:58:45 +0000942 llvm::Constant *GetOrCreateLLVMGlobal(StringRef MangledName,
Chris Lattner2acc6e32011-07-18 04:24:23 +0000943 llvm::PointerType *PTy,
Rafael Espindolac532b502011-01-18 21:07:57 +0000944 const VarDecl *D,
945 bool UnnamedAddr = false);
Mike Stump1eb44332009-09-09 15:08:12 +0000946
Daniel Dunbar7c65e992009-04-14 08:05:55 +0000947 /// SetCommonAttributes - Set attributes which are common to any
948 /// form of a global definition (alias, Objective-C method,
949 /// function, global variable).
Daniel Dunbar7dbd8192009-04-14 07:08:30 +0000950 ///
Daniel Dunbar7c65e992009-04-14 08:05:55 +0000951 /// NOTE: This should only be called for definitions.
952 void SetCommonAttributes(const Decl *D, llvm::GlobalValue *GV);
Daniel Dunbarf80519b2008-09-04 23:41:35 +0000953
Daniel Dunbar7c65e992009-04-14 08:05:55 +0000954 /// SetFunctionDefinitionAttributes - Set attributes for a global definition.
Mike Stump1eb44332009-09-09 15:08:12 +0000955 void SetFunctionDefinitionAttributes(const FunctionDecl *D,
Eli Friedmanc6c14d12009-05-26 01:22:57 +0000956 llvm::GlobalValue *GV);
Mike Stump1eb44332009-09-09 15:08:12 +0000957
Daniel Dunbar7dbd8192009-04-14 07:08:30 +0000958 /// SetFunctionAttributes - Set function attributes for a function
959 /// declaration.
Anders Carlssonb2bcf1c2010-02-06 02:44:09 +0000960 void SetFunctionAttributes(GlobalDecl GD,
Eli Friedmanc6c14d12009-05-26 01:22:57 +0000961 llvm::Function *F,
962 bool IsIncompleteFunction);
Nuno Lopesd4cbda62008-06-08 15:45:52 +0000963
Mike Stumpecc90e92009-02-13 19:12:34 +0000964 /// EmitGlobal - Emit code for a singal global function or var decl. Forward
965 /// declarations are emitted lazily.
Chris Lattnerb4880ba2009-05-12 21:21:08 +0000966 void EmitGlobal(GlobalDecl D);
Daniel Dunbar41071de2008-08-15 23:26:23 +0000967
Chris Lattnerb4880ba2009-05-12 21:21:08 +0000968 void EmitGlobalDefinition(GlobalDecl D);
Daniel Dunbard5d31802009-02-19 07:15:39 +0000969
Chris Lattnerb4880ba2009-05-12 21:21:08 +0000970 void EmitGlobalFunctionDefinition(GlobalDecl GD);
Daniel Dunbarbd012ff2008-07-29 23:18:29 +0000971 void EmitGlobalVarDefinition(const VarDecl *D);
Sebastian Redl19b1a6e2012-02-25 20:51:20 +0000972 llvm::Constant *MaybeEmitGlobalStdInitializerListInitializer(const VarDecl *D,
973 const Expr *init);
John McCallf746aa62010-03-19 23:29:14 +0000974 void EmitAliasDefinition(GlobalDecl GD);
Daniel Dunbaraf05bb92008-08-26 08:29:31 +0000975 void EmitObjCPropertyImplementations(const ObjCImplementationDecl *D);
Fariborz Jahanian109dfc62010-04-28 21:28:56 +0000976 void EmitObjCIvarInitializations(ObjCImplementationDecl *D);
Fariborz Jahanian354e7122010-10-27 16:21:54 +0000977
Anders Carlsson95d4e5d2009-04-15 15:55:24 +0000978 // C++ related functions.
Mike Stump1eb44332009-09-09 15:08:12 +0000979
John McCalld46f9852010-02-19 01:32:20 +0000980 bool TryEmitDefinitionAsAlias(GlobalDecl Alias, GlobalDecl Target);
John McCallc0bf4622010-02-23 00:48:20 +0000981 bool TryEmitBaseDestructorAsAlias(const CXXDestructorDecl *D);
John McCalld46f9852010-02-19 01:32:20 +0000982
Anders Carlsson984e0682009-04-01 00:58:25 +0000983 void EmitNamespace(const NamespaceDecl *D);
Anders Carlsson91e20dd2009-04-02 05:55:18 +0000984 void EmitLinkageSpec(const LinkageSpecDecl *D);
Anders Carlsson95d4e5d2009-04-15 15:55:24 +0000985
986 /// EmitCXXConstructors - Emit constructors (base, complete) from a
987 /// C++ constructor Decl.
988 void EmitCXXConstructors(const CXXConstructorDecl *D);
Mike Stump1eb44332009-09-09 15:08:12 +0000989
Anders Carlsson95d4e5d2009-04-15 15:55:24 +0000990 /// EmitCXXConstructor - Emit a single constructor with the given type from
991 /// a C++ constructor Decl.
992 void EmitCXXConstructor(const CXXConstructorDecl *D, CXXCtorType Type);
Mike Stump1eb44332009-09-09 15:08:12 +0000993
994 /// EmitCXXDestructors - Emit destructors (base, complete) from a
Anders Carlsson27ae5362009-04-17 01:58:57 +0000995 /// C++ destructor Decl.
996 void EmitCXXDestructors(const CXXDestructorDecl *D);
Mike Stump1eb44332009-09-09 15:08:12 +0000997
Anders Carlsson27ae5362009-04-17 01:58:57 +0000998 /// EmitCXXDestructor - Emit a single destructor with the given type from
999 /// a C++ destructor Decl.
1000 void EmitCXXDestructor(const CXXDestructorDecl *D, CXXDtorType Type);
Mike Stump1eb44332009-09-09 15:08:12 +00001001
Daniel Dunbarefb0fa92010-03-20 04:15:41 +00001002 /// EmitCXXGlobalInitFunc - Emit the function that initializes C++ globals.
Anders Carlsson89ed31d2009-08-08 23:24:23 +00001003 void EmitCXXGlobalInitFunc();
Eli Friedman6c6bda32010-01-08 00:50:11 +00001004
Daniel Dunbarefb0fa92010-03-20 04:15:41 +00001005 /// EmitCXXGlobalDtorFunc - Emit the function that destroys C++ globals.
1006 void EmitCXXGlobalDtorFunc();
1007
Richard Smith7ca48502012-02-13 22:16:19 +00001008 /// EmitCXXGlobalVarDeclInitFunc - Emit the function that initializes the
1009 /// specified global (if PerformInit is true) and registers its destructor.
John McCall3030eb82010-11-06 09:44:32 +00001010 void EmitCXXGlobalVarDeclInitFunc(const VarDecl *D,
Richard Smith7ca48502012-02-13 22:16:19 +00001011 llvm::GlobalVariable *Addr,
1012 bool PerformInit);
Eli Friedman6c6bda32010-01-08 00:50:11 +00001013
Daniel Dunbar6bfed7e2008-08-01 00:01:51 +00001014 // FIXME: Hardcoding priority here is gross.
Chris Lattnerb4880ba2009-05-12 21:21:08 +00001015 void AddGlobalCtor(llvm::Function *Ctor, int Priority=65535);
1016 void AddGlobalDtor(llvm::Function *Dtor, int Priority=65535);
Daniel Dunbarbd012ff2008-07-29 23:18:29 +00001017
Mike Stumpecc90e92009-02-13 19:12:34 +00001018 /// EmitCtorList - Generates a global array of functions and priorities using
1019 /// the given list and name. This array will have appending linkage and is
1020 /// suitable for use as a LLVM constructor or destructor array.
Daniel Dunbar6bfed7e2008-08-01 00:01:51 +00001021 void EmitCtorList(const CtorList &Fns, const char *GlobalName);
1022
Rafael Espindolad1a5c312010-03-27 02:52:14 +00001023 /// EmitFundamentalRTTIDescriptor - Emit the RTTI descriptors for the
1024 /// given type.
1025 void EmitFundamentalRTTIDescriptor(QualType Type);
1026
1027 /// EmitFundamentalRTTIDescriptors - Emit the RTTI descriptors for the
1028 /// builtin types.
1029 void EmitFundamentalRTTIDescriptors();
1030
Daniel Dunbar42745812009-03-09 23:53:08 +00001031 /// EmitDeferred - Emit any needed decls for which code generation
1032 /// was deferred.
Dmitri Gribenkoc4a77902012-11-15 14:28:07 +00001033 void EmitDeferred();
Daniel Dunbar02698712009-02-13 20:29:50 +00001034
John McCalld5617ee2013-01-25 22:31:03 +00001035 /// EmitDeferredVTables - Emit any vtables which we deferred and
1036 /// still have a use for.
1037 void EmitDeferredVTables();
1038
Daniel Dunbar42745812009-03-09 23:53:08 +00001039 /// EmitLLVMUsed - Emit the llvm.used metadata used to force
1040 /// references to global which may otherwise be optimized out.
Dmitri Gribenkoc4a77902012-11-15 14:28:07 +00001041 void EmitLLVMUsed();
Daniel Dunbarf1968f22008-10-01 00:49:24 +00001042
Douglas Gregor858afb32013-01-14 20:53:57 +00001043 /// \brief Emit the link options introduced by imported modules.
1044 void EmitModuleLinkOptions();
1045
John McCall744016d2010-07-06 23:57:41 +00001046 void EmitDeclMetadata();
1047
Nick Lewycky3dc05412011-05-05 00:08:20 +00001048 /// EmitCoverageFile - Emit the llvm.gcov metadata used to tell LLVM where
Nick Lewycky5ea4f442011-05-04 20:46:58 +00001049 /// to emit the .gcno and .gcda files in a way that persists in .bc files.
Nick Lewycky3dc05412011-05-05 00:08:20 +00001050 void EmitCoverageFile();
Nick Lewycky5ea4f442011-05-04 20:46:58 +00001051
Nico Weberc5f80462012-10-11 10:13:44 +00001052 /// Emits the initializer for a uuidof string.
1053 llvm::Constant *EmitUuidofInitializer(StringRef uuidstr, QualType IIDType);
1054
Daniel Dunbar42745812009-03-09 23:53:08 +00001055 /// MayDeferGeneration - Determine if the given decl can be emitted
1056 /// lazily; this is only relevant for definitions. The given decl
1057 /// must be either a function or var decl.
Daniel Dunbar73241df2009-02-13 21:18:01 +00001058 bool MayDeferGeneration(const ValueDecl *D);
John McCallb2593832010-09-16 06:16:50 +00001059
1060 /// SimplifyPersonality - Check whether we can use a "simpler", more
1061 /// core exceptions personality function.
1062 void SimplifyPersonality();
Reid Spencer5f016e22007-07-11 17:01:13 +00001063};
1064} // end namespace CodeGen
1065} // end namespace clang
1066
1067#endif