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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"
Peter Collingbournea9679352013-07-09 22:03:30 +000034#include "llvm/Transforms/Utils/SpecialCaseList.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;
David Blaikied6471f72011-09-25 23:23:43 +000070 class DiagnosticsEngine;
Nate Begeman8bd4afe2008-04-19 04:17:09 +000071 class AnnotateAttr;
Anders Carlsson27ae5362009-04-17 01:58:57 +000072 class CXXDestructorDecl;
Peter Collingbourne14110472011-01-13 18:57:25 +000073 class MangleBuffer;
Douglas Gregorb6cbe512013-01-14 17:21:00 +000074 class Module;
Mike Stumpecc90e92009-02-13 19:12:34 +000075
Reid Spencer5f016e22007-07-11 17:01:13 +000076namespace CodeGen {
77
John McCalld26bc762011-03-09 04:27:21 +000078 class CallArgList;
Lauro Ramos Venancio81373352008-02-26 21:41:45 +000079 class CodeGenFunction;
Dan Gohman3d5aff52010-10-14 23:06:10 +000080 class CodeGenTBAA;
John McCall4c40d982010-08-31 07:33:07 +000081 class CGCXXABI;
Sanjiv Guptae8b9f5b2008-05-08 08:54:20 +000082 class CGDebugInfo;
Daniel Dunbaraf2f62c2008-08-13 00:59:25 +000083 class CGObjCRuntime;
Peter Collingbourne8c25fc52011-09-19 21:14:35 +000084 class CGOpenCLRuntime;
Peter Collingbourne6c0aa5f2011-10-06 18:29:37 +000085 class CGCUDARuntime;
John McCalld16c2cf2011-02-08 08:22:06 +000086 class BlockFieldFlags;
John McCalld26bc762011-03-09 04:27:21 +000087 class FunctionArgList;
Anders Carlsson4a6835e2009-09-10 23:38:47 +000088
Chris Lattnerec2830d2010-06-27 06:32:58 +000089 struct OrderGlobalInits {
Fariborz Jahaniane0b691a2010-06-21 21:27:42 +000090 unsigned int priority;
91 unsigned int lex_order;
92 OrderGlobalInits(unsigned int p, unsigned int l)
Chris Lattnerec2830d2010-06-27 06:32:58 +000093 : priority(p), lex_order(l) {}
94
95 bool operator==(const OrderGlobalInits &RHS) const {
96 return priority == RHS.priority &&
97 lex_order == RHS.lex_order;
Fariborz Jahanianf4896882010-06-22 00:23:08 +000098 }
99
Chris Lattnerec2830d2010-06-27 06:32:58 +0000100 bool operator<(const OrderGlobalInits &RHS) const {
101 if (priority < RHS.priority)
Fariborz Jahanianf4896882010-06-22 00:23:08 +0000102 return true;
103
Chris Lattnerec2830d2010-06-27 06:32:58 +0000104 return priority == RHS.priority && lex_order < RHS.lex_order;
Fariborz Jahanianf4896882010-06-22 00:23:08 +0000105 }
Chris Lattnerec2830d2010-06-27 06:32:58 +0000106 };
John McCall5936e332011-02-15 09:22:45 +0000107
108 struct CodeGenTypeCache {
John McCall0774cb82011-05-15 01:53:33 +0000109 /// void
Chris Lattner9cbe4f02011-07-09 17:41:47 +0000110 llvm::Type *VoidTy;
John McCall0774cb82011-05-15 01:53:33 +0000111
Chris Lattner8b418682012-02-07 00:39:47 +0000112 /// i8, i16, i32, and i64
113 llvm::IntegerType *Int8Ty, *Int16Ty, *Int32Ty, *Int64Ty;
114 /// float, double
115 llvm::Type *FloatTy, *DoubleTy;
John McCall5936e332011-02-15 09:22:45 +0000116
117 /// int
Chris Lattner9cbe4f02011-07-09 17:41:47 +0000118 llvm::IntegerType *IntTy;
John McCall5936e332011-02-15 09:22:45 +0000119
John McCall0774cb82011-05-15 01:53:33 +0000120 /// intptr_t, size_t, and ptrdiff_t, which we assume are the same size.
John McCall5936e332011-02-15 09:22:45 +0000121 union {
Chris Lattner9cbe4f02011-07-09 17:41:47 +0000122 llvm::IntegerType *IntPtrTy;
123 llvm::IntegerType *SizeTy;
124 llvm::IntegerType *PtrDiffTy;
John McCall5936e332011-02-15 09:22:45 +0000125 };
126
127 /// void* in address space 0
128 union {
Chris Lattner9cbe4f02011-07-09 17:41:47 +0000129 llvm::PointerType *VoidPtrTy;
130 llvm::PointerType *Int8PtrTy;
John McCall5936e332011-02-15 09:22:45 +0000131 };
132
133 /// void** in address space 0
134 union {
Chris Lattner9cbe4f02011-07-09 17:41:47 +0000135 llvm::PointerType *VoidPtrPtrTy;
136 llvm::PointerType *Int8PtrPtrTy;
John McCall5936e332011-02-15 09:22:45 +0000137 };
138
John McCall34695852011-02-22 06:44:22 +0000139 /// The width of a pointer into the generic address space.
John McCall5936e332011-02-15 09:22:45 +0000140 unsigned char PointerWidthInBits;
John McCall34695852011-02-22 06:44:22 +0000141
John McCall71c758d2011-09-10 09:17:20 +0000142 /// The size and alignment of a pointer into the generic address
143 /// space.
144 union {
145 unsigned char PointerAlignInBytes;
146 unsigned char PointerSizeInBytes;
John McCalle2b45e22012-05-01 05:23:51 +0000147 unsigned char SizeSizeInBytes; // sizeof(size_t)
John McCall71c758d2011-09-10 09:17:20 +0000148 };
John McCallbd7370a2013-02-28 19:01:20 +0000149
150 llvm::CallingConv::ID RuntimeCC;
151 llvm::CallingConv::ID getRuntimeCC() const {
152 return RuntimeCC;
153 }
John McCall5936e332011-02-15 09:22:45 +0000154 };
John McCallf85e1932011-06-15 23:02:42 +0000155
156struct RREntrypoints {
157 RREntrypoints() { memset(this, 0, sizeof(*this)); }
158 /// void objc_autoreleasePoolPop(void*);
159 llvm::Constant *objc_autoreleasePoolPop;
160
161 /// void *objc_autoreleasePoolPush(void);
162 llvm::Constant *objc_autoreleasePoolPush;
163};
164
165struct ARCEntrypoints {
166 ARCEntrypoints() { memset(this, 0, sizeof(*this)); }
167
168 /// id objc_autorelease(id);
169 llvm::Constant *objc_autorelease;
170
171 /// id objc_autoreleaseReturnValue(id);
172 llvm::Constant *objc_autoreleaseReturnValue;
173
174 /// void objc_copyWeak(id *dest, id *src);
175 llvm::Constant *objc_copyWeak;
176
177 /// void objc_destroyWeak(id*);
178 llvm::Constant *objc_destroyWeak;
179
180 /// id objc_initWeak(id*, id);
181 llvm::Constant *objc_initWeak;
182
183 /// id objc_loadWeak(id*);
184 llvm::Constant *objc_loadWeak;
185
186 /// id objc_loadWeakRetained(id*);
187 llvm::Constant *objc_loadWeakRetained;
188
189 /// void objc_moveWeak(id *dest, id *src);
190 llvm::Constant *objc_moveWeak;
191
192 /// id objc_retain(id);
193 llvm::Constant *objc_retain;
194
195 /// id objc_retainAutorelease(id);
196 llvm::Constant *objc_retainAutorelease;
197
198 /// id objc_retainAutoreleaseReturnValue(id);
199 llvm::Constant *objc_retainAutoreleaseReturnValue;
200
201 /// id objc_retainAutoreleasedReturnValue(id);
202 llvm::Constant *objc_retainAutoreleasedReturnValue;
203
204 /// id objc_retainBlock(id);
205 llvm::Constant *objc_retainBlock;
206
207 /// void objc_release(id);
208 llvm::Constant *objc_release;
209
210 /// id objc_storeStrong(id*, id);
211 llvm::Constant *objc_storeStrong;
212
213 /// id objc_storeWeak(id*, id);
214 llvm::Constant *objc_storeWeak;
215
216 /// A void(void) inline asm to use to mark that the return value of
217 /// a call will be immediately retain.
218 llvm::InlineAsm *retainAutoreleasedReturnValueMarker;
John McCallb6a60792013-03-23 02:35:54 +0000219
220 /// void clang.arc.use(...);
221 llvm::Constant *clang_arc_use;
John McCallf85e1932011-06-15 23:02:42 +0000222};
Will Dietz4f45bc02013-01-18 11:30:38 +0000223
Mike Stumpecc90e92009-02-13 19:12:34 +0000224/// CodeGenModule - This class organizes the cross-function state that is used
225/// while generating LLVM code.
John McCall5936e332011-02-15 09:22:45 +0000226class CodeGenModule : public CodeGenTypeCache {
Dmitri Gribenkof56faa02012-09-15 20:20:27 +0000227 CodeGenModule(const CodeGenModule &) LLVM_DELETED_FUNCTION;
228 void operator=(const CodeGenModule &) LLVM_DELETED_FUNCTION;
Anders Carlsson8a219ce2009-02-24 04:21:31 +0000229
Chris Lattnerca0017a2009-09-12 22:45:21 +0000230 typedef std::vector<std::pair<llvm::Constant*, int> > CtorList;
Daniel Dunbar6bfed7e2008-08-01 00:01:51 +0000231
Reid Spencer5f016e22007-07-11 17:01:13 +0000232 ASTContext &Context;
David Blaikie4e4d0842012-03-11 07:00:24 +0000233 const LangOptions &LangOpts;
Chandler Carruth2811ccf2009-11-12 17:24:48 +0000234 const CodeGenOptions &CodeGenOpts;
Reid Spencer5f016e22007-07-11 17:01:13 +0000235 llvm::Module &TheModule;
David Blaikied6471f72011-09-25 23:23:43 +0000236 DiagnosticsEngine &Diags;
John McCall64aa4b32013-04-16 22:48:15 +0000237 const llvm::DataLayout &TheDataLayout;
238 const TargetInfo &Target;
John McCallf16aa102010-08-22 21:01:12 +0000239 CGCXXABI &ABI;
John McCall64aa4b32013-04-16 22:48:15 +0000240 llvm::LLVMContext &VMContext;
Anders Carlssonb5404912009-10-07 01:06:45 +0000241
John McCall64aa4b32013-04-16 22:48:15 +0000242 CodeGenTBAA *TBAA;
243
244 mutable const TargetCodeGenInfo *TheTargetCodeGenInfo;
245
246 // This should not be moved earlier, since its initialization depends on some
247 // of the previous reference members being already initialized and also checks
248 // if TheTargetCodeGenInfo is NULL
249 CodeGenTypes Types;
250
Anders Carlssonaf440352010-03-23 04:11:45 +0000251 /// VTables - Holds information about C++ vtables.
252 CodeGenVTables VTables;
Douglas Gregore17ad2f2010-04-08 16:07:47 +0000253
Peter Collingbournee9265232011-07-27 20:29:46 +0000254 CGObjCRuntime* ObjCRuntime;
Peter Collingbourne8c25fc52011-09-19 21:14:35 +0000255 CGOpenCLRuntime* OpenCLRuntime;
Peter Collingbourne6c0aa5f2011-10-06 18:29:37 +0000256 CGCUDARuntime* CUDARuntime;
Ted Kremenek815c78f2008-08-05 18:50:11 +0000257 CGDebugInfo* DebugInfo;
John McCallf85e1932011-06-15 23:02:42 +0000258 ARCEntrypoints *ARCData;
Dan Gohmanb49bd272012-02-16 00:57:37 +0000259 llvm::MDNode *NoObjCARCExceptionsMetadata;
John McCallf85e1932011-06-15 23:02:42 +0000260 RREntrypoints *RRData;
Daniel Dunbar9986eab2008-07-30 16:32:24 +0000261
Rafael Espindola6a836702010-03-04 18:17:24 +0000262 // WeakRefReferences - A set of references that have only been seen via
John McCall64aa4b32013-04-16 22:48:15 +0000263 // a weakref so far. This is used to remove the weak of the reference if we
264 // ever see a direct reference or a definition.
Rafael Espindola6a836702010-03-04 18:17:24 +0000265 llvm::SmallPtrSet<llvm::GlobalValue*, 10> WeakRefReferences;
266
Chris Lattner67b00522009-03-21 09:44:56 +0000267 /// DeferredDecls - This contains all the decls which have definitions but
268 /// which are deferred for emission and therefore should only be output if
269 /// they are actually used. If a decl is in this, then it is known to have
John McCallf746aa62010-03-19 23:29:14 +0000270 /// not been referenced yet.
271 llvm::StringMap<GlobalDecl> DeferredDecls;
Daniel Dunbar02698712009-02-13 20:29:50 +0000272
Chris Lattner67b00522009-03-21 09:44:56 +0000273 /// DeferredDeclsToEmit - This is a list of deferred decls which we have seen
274 /// that *are* actually referenced. These get code generated when the module
275 /// is done.
Anders Carlsson2a131fb2009-05-05 04:44:02 +0000276 std::vector<GlobalDecl> DeferredDeclsToEmit;
Daniel Dunbar03f5ad92009-04-15 22:08:45 +0000277
John McCalld5617ee2013-01-25 22:31:03 +0000278 /// DeferredVTables - A queue of (optional) vtables to consider emitting.
279 std::vector<const CXXRecordDecl*> DeferredVTables;
280
Daniel Dunbar02698712009-02-13 20:29:50 +0000281 /// LLVMUsed - List of global values which are required to be
282 /// present in the object file; bitcast to i8*. This is used for
283 /// forcing visibility of symbols which may otherwise be optimized
284 /// out.
Chris Lattner35f38a22009-03-31 22:37:52 +0000285 std::vector<llvm::WeakVH> LLVMUsed;
Mike Stumpecc90e92009-02-13 19:12:34 +0000286
287 /// GlobalCtors - Store the list of global constructors and their respective
288 /// priorities to be emitted when the translation unit is complete.
Daniel Dunbar6bfed7e2008-08-01 00:01:51 +0000289 CtorList GlobalCtors;
290
Mike Stumpecc90e92009-02-13 19:12:34 +0000291 /// GlobalDtors - Store the list of global destructors and their respective
292 /// priorities to be emitted when the translation unit is complete.
Daniel Dunbar6bfed7e2008-08-01 00:01:51 +0000293 CtorList GlobalDtors;
294
Anders Carlsson793a9902010-06-22 16:05:32 +0000295 /// MangledDeclNames - A map of canonical GlobalDecls to their mangled names.
Chris Lattner686775d2011-07-20 06:58:45 +0000296 llvm::DenseMap<GlobalDecl, StringRef> MangledDeclNames;
Anders Carlsson793a9902010-06-22 16:05:32 +0000297 llvm::BumpPtrAllocator MangledNamesAllocator;
298
Julien Lerouge77f68bb2011-09-09 22:41:49 +0000299 /// Global annotations.
Nate Begeman532485c2008-04-18 23:43:57 +0000300 std::vector<llvm::Constant*> Annotations;
Mike Stumpecc90e92009-02-13 19:12:34 +0000301
Julien Lerouge77f68bb2011-09-09 22:41:49 +0000302 /// Map used to get unique annotation strings.
303 llvm::StringMap<llvm::Constant*> AnnotationStrings;
304
Anders Carlssonc9e20912007-08-21 00:21:21 +0000305 llvm::StringMap<llvm::Constant*> CFConstantStringMap;
John McCalla5e19c62011-08-04 01:03:22 +0000306 llvm::StringMap<llvm::GlobalVariable*> ConstantStringMap;
Eli Friedman71cba342012-03-09 03:27:46 +0000307 llvm::DenseMap<const Decl*, llvm::Constant *> StaticLocalDeclMap;
John McCall355bba72012-03-30 21:00:39 +0000308 llvm::DenseMap<const Decl*, llvm::GlobalVariable*> StaticLocalDeclGuardMap;
Richard Smith211c8dd2013-06-05 00:46:14 +0000309 llvm::DenseMap<const Expr*, llvm::Constant *> MaterializedGlobalTemporaryMap;
310
Fariborz Jahanianb08cfb32012-01-08 19:13:23 +0000311 llvm::DenseMap<QualType, llvm::Constant *> AtomicSetterHelperFnMap;
312 llvm::DenseMap<QualType, llvm::Constant *> AtomicGetterHelperFnMap;
Daniel Dunbar3e9df992008-08-23 18:37:06 +0000313
Richard Smith00249372013-04-06 05:00:46 +0000314 /// Map used to track internal linkage functions declared within
315 /// extern "C" regions.
Richard Smith84083b72013-04-13 01:28:18 +0000316 typedef llvm::MapVector<IdentifierInfo *,
317 llvm::GlobalValue *> StaticExternCMap;
Richard Smith00249372013-04-06 05:00:46 +0000318 StaticExternCMap StaticExternCValues;
319
Richard Smithb80a16e2013-04-19 16:42:07 +0000320 /// \brief thread_local variables defined or used in this TU.
321 std::vector<std::pair<const VarDecl *, llvm::GlobalVariable *> >
322 CXXThreadLocals;
323
324 /// \brief thread_local variables with initializers that need to run
325 /// before any thread_local variable in this TU is odr-used.
326 std::vector<llvm::Constant*> CXXThreadLocalInits;
327
Daniel Dunbarefb0fa92010-03-20 04:15:41 +0000328 /// CXXGlobalInits - Global variables with initializers that need to run
Anders Carlsson89ed31d2009-08-08 23:24:23 +0000329 /// before main.
Eli Friedman6c6bda32010-01-08 00:50:11 +0000330 std::vector<llvm::Constant*> CXXGlobalInits;
John McCallbf40cb52010-07-15 23:40:35 +0000331
332 /// When a C++ decl with an initializer is deferred, null is
333 /// appended to CXXGlobalInits, and the index of that null is placed
334 /// here so that the initializer will be performed in the correct
335 /// order.
336 llvm::DenseMap<const Decl*, unsigned> DelayedCXXInitPosition;
Fariborz Jahanian9f967c52010-06-21 18:45:05 +0000337
Anton Korobeynikov4179ddd2012-11-06 22:44:45 +0000338 typedef std::pair<OrderGlobalInits, llvm::Function*> GlobalInitData;
339
340 struct GlobalInitPriorityCmp {
341 bool operator()(const GlobalInitData &LHS,
342 const GlobalInitData &RHS) const {
343 return LHS.first.priority < RHS.first.priority;
344 }
345 };
346
Fariborz Jahanian9f967c52010-06-21 18:45:05 +0000347 /// - Global variables with initializers whose order of initialization
348 /// is set by init_priority attribute.
Anton Korobeynikov4179ddd2012-11-06 22:44:45 +0000349 SmallVector<GlobalInitData, 8> PrioritizedCXXGlobalInits;
Mike Stump1eb44332009-09-09 15:08:12 +0000350
Daniel Dunbarefb0fa92010-03-20 04:15:41 +0000351 /// CXXGlobalDtors - Global destructor functions and arguments that need to
352 /// run on termination.
Chris Lattner810112e2010-06-19 05:52:45 +0000353 std::vector<std::pair<llvm::WeakVH,llvm::Constant*> > CXXGlobalDtors;
Daniel Dunbarefb0fa92010-03-20 04:15:41 +0000354
Douglas Gregorb6cbe512013-01-14 17:21:00 +0000355 /// \brief The complete set of modules that has been imported.
356 llvm::SetVector<clang::Module *> ImportedModules;
357
Reid Kleckner3190ca92013-05-08 13:44:39 +0000358 /// \brief A vector of metadata strings.
359 SmallVector<llvm::Value *, 16> LinkerOptionsMetadata;
360
Douglas Gregor45c4ea72011-08-09 15:54:21 +0000361 /// @name Cache for Objective-C runtime types
362 /// @{
363
Mike Stumpecc90e92009-02-13 19:12:34 +0000364 /// CFConstantStringClassRef - Cached reference to the class for constant
365 /// strings. This value has type int * but is actually an Obj-C class pointer.
Fariborz Jahanian428edb72013-04-16 15:25:39 +0000366 llvm::WeakVH CFConstantStringClassRef;
Mike Stump1eb44332009-09-09 15:08:12 +0000367
Fariborz Jahanian4c733072010-10-19 17:19:29 +0000368 /// ConstantStringClassRef - Cached reference to the class for constant
Fariborz Jahanian2bb5dda2010-04-23 17:41:07 +0000369 /// strings. This value has type int * but is actually an Obj-C class pointer.
Fariborz Jahanian428edb72013-04-16 15:25:39 +0000370 llvm::WeakVH ConstantStringClassRef;
Fariborz Jahanian2bb5dda2010-04-23 17:41:07 +0000371
Douglas Gregor45c4ea72011-08-09 15:54:21 +0000372 /// \brief The LLVM type corresponding to NSConstantString.
373 llvm::StructType *NSConstantStringType;
374
Douglas Gregor0815b572011-08-09 17:23:49 +0000375 /// \brief The type used to describe the state of a fast enumeration in
376 /// Objective-C's for..in loop.
377 QualType ObjCFastEnumerationStateType;
378
Douglas Gregor45c4ea72011-08-09 15:54:21 +0000379 /// @}
380
David Chisnall0d13f6f2010-01-23 02:40:42 +0000381 /// Lazily create the Objective-C runtime
382 void createObjCRuntime();
383
Peter Collingbourne8c25fc52011-09-19 21:14:35 +0000384 void createOpenCLRuntime();
Peter Collingbourne6c0aa5f2011-10-06 18:29:37 +0000385 void createCUDARuntime();
Peter Collingbourne8c25fc52011-09-19 21:14:35 +0000386
Rafael Espindolabcf6b982011-12-19 14:41:01 +0000387 bool isTriviallyRecursive(const FunctionDecl *F);
Peter Collingbourne144a31f2013-06-05 17:49:37 +0000388 bool shouldEmitFunction(GlobalDecl GD);
Daniel Dunbar673431a2010-07-16 00:00:15 +0000389
390 /// @name Cache for Blocks Runtime Globals
391 /// @{
392
393 llvm::Constant *NSConcreteGlobalBlock;
394 llvm::Constant *NSConcreteStackBlock;
Daniel Dunbar754b9fb2010-07-16 00:00:19 +0000395
Daniel Dunbar673431a2010-07-16 00:00:15 +0000396 llvm::Constant *BlockObjectAssign;
397 llvm::Constant *BlockObjectDispose;
398
Chris Lattner9cbe4f02011-07-09 17:41:47 +0000399 llvm::Type *BlockDescriptorType;
400 llvm::Type *GenericBlockLiteralType;
John McCalld16c2cf2011-02-08 08:22:06 +0000401
402 struct {
403 int GlobalUniqueCount;
404 } Block;
Will Dietz4f45bc02013-01-18 11:30:38 +0000405
Nadav Rotem495cfa42013-03-23 06:43:35 +0000406 /// void @llvm.lifetime.start(i64 %size, i8* nocapture <ptr>)
407 llvm::Constant *LifetimeStartFn;
408
409 /// void @llvm.lifetime.end(i64 %size, i8* nocapture <ptr>)
410 llvm::Constant *LifetimeEndFn;
411
Fariborz Jahanian4904bf42012-06-26 16:06:38 +0000412 GlobalDecl initializedGlobalDecl;
John McCalld16c2cf2011-02-08 08:22:06 +0000413
Alexey Samsonov6a4c5dc2013-08-12 11:48:05 +0000414 llvm::OwningPtr<llvm::SpecialCaseList> SanitizerBlacklist;
Will Dietz4f45bc02013-01-18 11:30:38 +0000415
416 const SanitizerOptions &SanOpts;
417
Daniel Dunbar673431a2010-07-16 00:00:15 +0000418 /// @}
Reid Spencer5f016e22007-07-11 17:01:13 +0000419public:
Chandler Carruth2811ccf2009-11-12 17:24:48 +0000420 CodeGenModule(ASTContext &C, const CodeGenOptions &CodeGenOpts,
John McCall3abae092013-04-16 22:48:20 +0000421 llvm::Module &M, const llvm::DataLayout &TD,
422 DiagnosticsEngine &Diags);
Ted Kremenek815c78f2008-08-05 18:50:11 +0000423
Chris Lattner2b94fe32008-03-01 08:45:05 +0000424 ~CodeGenModule();
Mike Stumpecc90e92009-02-13 19:12:34 +0000425
Ted Kremenek815c78f2008-08-05 18:50:11 +0000426 /// Release - Finalize LLVM code generation.
427 void Release();
Daniel Dunbar208ff5e2008-08-11 18:12:00 +0000428
429 /// getObjCRuntime() - Return a reference to the configured
430 /// Objective-C runtime.
Mike Stumpecc90e92009-02-13 19:12:34 +0000431 CGObjCRuntime &getObjCRuntime() {
Peter Collingbournee9265232011-07-27 20:29:46 +0000432 if (!ObjCRuntime) createObjCRuntime();
433 return *ObjCRuntime;
Daniel Dunbar208ff5e2008-08-11 18:12:00 +0000434 }
Mike Stumpecc90e92009-02-13 19:12:34 +0000435
Sylvestre Ledruf3477c12012-09-27 10:16:10 +0000436 /// hasObjCRuntime() - Return true iff an Objective-C runtime has
Daniel Dunbar208ff5e2008-08-11 18:12:00 +0000437 /// been configured.
Peter Collingbournee9265232011-07-27 20:29:46 +0000438 bool hasObjCRuntime() { return !!ObjCRuntime; }
Daniel Dunbar208ff5e2008-08-11 18:12:00 +0000439
Peter Collingbourne6c0aa5f2011-10-06 18:29:37 +0000440 /// getOpenCLRuntime() - Return a reference to the configured OpenCL runtime.
Peter Collingbourne8c25fc52011-09-19 21:14:35 +0000441 CGOpenCLRuntime &getOpenCLRuntime() {
442 assert(OpenCLRuntime != 0);
443 return *OpenCLRuntime;
444 }
445
Peter Collingbourne6c0aa5f2011-10-06 18:29:37 +0000446 /// getCUDARuntime() - Return a reference to the configured CUDA runtime.
447 CGCUDARuntime &getCUDARuntime() {
448 assert(CUDARuntime != 0);
449 return *CUDARuntime;
450 }
451
John McCallf85e1932011-06-15 23:02:42 +0000452 ARCEntrypoints &getARCEntrypoints() const {
David Blaikie4e4d0842012-03-11 07:00:24 +0000453 assert(getLangOpts().ObjCAutoRefCount && ARCData != 0);
John McCallf85e1932011-06-15 23:02:42 +0000454 return *ARCData;
455 }
456
457 RREntrypoints &getRREntrypoints() const {
458 assert(RRData != 0);
459 return *RRData;
460 }
461
Eli Friedman71cba342012-03-09 03:27:46 +0000462 llvm::Constant *getStaticLocalDeclAddress(const VarDecl *D) {
463 return StaticLocalDeclMap[D];
Fariborz Jahanian65ad5a42010-04-18 21:01:23 +0000464 }
Fariborz Jahanian63326a52010-04-19 18:15:02 +0000465 void setStaticLocalDeclAddress(const VarDecl *D,
Eli Friedman71cba342012-03-09 03:27:46 +0000466 llvm::Constant *C) {
467 StaticLocalDeclMap[D] = C;
Fariborz Jahanian65ad5a42010-04-18 21:01:23 +0000468 }
469
John McCall355bba72012-03-30 21:00:39 +0000470 llvm::GlobalVariable *getStaticLocalDeclGuardAddress(const VarDecl *D) {
471 return StaticLocalDeclGuardMap[D];
472 }
473 void setStaticLocalDeclGuardAddress(const VarDecl *D,
474 llvm::GlobalVariable *C) {
475 StaticLocalDeclGuardMap[D] = C;
476 }
477
Fariborz Jahanianb08cfb32012-01-08 19:13:23 +0000478 llvm::Constant *getAtomicSetterHelperFnMap(QualType Ty) {
479 return AtomicSetterHelperFnMap[Ty];
Fariborz Jahaniancd93b962012-01-06 22:33:54 +0000480 }
Fariborz Jahanianb08cfb32012-01-08 19:13:23 +0000481 void setAtomicSetterHelperFnMap(QualType Ty,
Fariborz Jahaniancd93b962012-01-06 22:33:54 +0000482 llvm::Constant *Fn) {
Fariborz Jahanianb08cfb32012-01-08 19:13:23 +0000483 AtomicSetterHelperFnMap[Ty] = Fn;
484 }
485
486 llvm::Constant *getAtomicGetterHelperFnMap(QualType Ty) {
487 return AtomicGetterHelperFnMap[Ty];
488 }
489 void setAtomicGetterHelperFnMap(QualType Ty,
490 llvm::Constant *Fn) {
491 AtomicGetterHelperFnMap[Ty] = Fn;
Fariborz Jahaniancd93b962012-01-06 22:33:54 +0000492 }
493
Devang Patelaa112892011-03-07 18:45:56 +0000494 CGDebugInfo *getModuleDebugInfo() { return DebugInfo; }
Devang Patel5de7a0e2011-03-07 18:29:53 +0000495
Dan Gohmanb49bd272012-02-16 00:57:37 +0000496 llvm::MDNode *getNoObjCARCExceptionsMetadata() {
497 if (!NoObjCARCExceptionsMetadata)
498 NoObjCARCExceptionsMetadata =
499 llvm::MDNode::get(getLLVMContext(),
500 SmallVector<llvm::Value*,1>());
501 return NoObjCARCExceptionsMetadata;
502 }
503
Reid Spencer5f016e22007-07-11 17:01:13 +0000504 ASTContext &getContext() const { return Context; }
David Blaikie4e4d0842012-03-11 07:00:24 +0000505 const LangOptions &getLangOpts() const { return LangOpts; }
John McCall64aa4b32013-04-16 22:48:15 +0000506 const CodeGenOptions &getCodeGenOpts() const { return CodeGenOpts; }
Reid Spencer5f016e22007-07-11 17:01:13 +0000507 llvm::Module &getModule() const { return TheModule; }
David Blaikied6471f72011-09-25 23:23:43 +0000508 DiagnosticsEngine &getDiags() const { return Diags; }
Micah Villmow25a6a842012-10-08 16:25:52 +0000509 const llvm::DataLayout &getDataLayout() const { return TheDataLayout; }
John McCall64aa4b32013-04-16 22:48:15 +0000510 const TargetInfo &getTarget() const { return Target; }
511 CGCXXABI &getCXXABI() { return ABI; }
Owen Andersona1cf15f2009-07-14 23:10:40 +0000512 llvm::LLVMContext &getLLVMContext() { return VMContext; }
John McCall64aa4b32013-04-16 22:48:15 +0000513
John McCallbc7fbf02011-02-26 08:07:02 +0000514 bool shouldUseTBAA() const { return TBAA != 0; }
515
John McCall64aa4b32013-04-16 22:48:15 +0000516 const TargetCodeGenInfo &getTargetCodeGenInfo();
517
518 CodeGenTypes &getTypes() { return Types; }
519
520 CodeGenVTables &getVTables() { return VTables; }
Timur Iskhodzhanov8f189a92013-08-21 06:25:03 +0000521
John McCall64aa4b32013-04-16 22:48:15 +0000522 VTableContext &getVTableContext() { return VTables.getVTableContext(); }
523
Timur Iskhodzhanov8f189a92013-08-21 06:25:03 +0000524 MicrosoftVFTableContext &getVFTableContext() {
525 return VTables.getVFTableContext();
526 }
527
Dan Gohman3d5aff52010-10-14 23:06:10 +0000528 llvm::MDNode *getTBAAInfo(QualType QTy);
Kostya Serebryany8cb4a072012-03-26 17:03:51 +0000529 llvm::MDNode *getTBAAInfoForVTablePtr();
Dan Gohmanb22c7dc2012-09-28 21:58:29 +0000530 llvm::MDNode *getTBAAStructInfo(QualType QTy);
Manman Renb37a73d2013-04-04 21:53:22 +0000531 /// Return the MDNode in the type DAG for the given struct type.
532 llvm::MDNode *getTBAAStructTypeInfo(QualType QTy);
533 /// Return the path-aware tag for given base type, access node and offset.
534 llvm::MDNode *getTBAAStructTagInfo(QualType BaseTy, llvm::MDNode *AccessN,
535 uint64_t O);
Dan Gohman3d5aff52010-10-14 23:06:10 +0000536
Richard Smitha9b21d22012-02-17 06:48:11 +0000537 bool isTypeConstant(QualType QTy, bool ExcludeCtorDtor);
538
John McCall9eda3ab2013-03-07 21:37:17 +0000539 bool isPaddedAtomicType(QualType type);
540 bool isPaddedAtomicType(const AtomicType *type);
541
Manman Renca835182013-04-11 23:02:56 +0000542 /// Decorate the instruction with a TBAA tag. For scalar TBAA, the tag
543 /// is the same as the type. For struct-path aware TBAA, the tag
544 /// is different from the type: base type, access type and offset.
545 /// When ConvertTypeToTag is true, we create a tag based on the scalar type.
546 void DecorateInstruction(llvm::Instruction *Inst,
547 llvm::MDNode *TBAAInfo,
548 bool ConvertTypeToTag = true);
Dan Gohman3d5aff52010-10-14 23:06:10 +0000549
John McCallbc8d40d2011-06-24 21:55:10 +0000550 /// getSize - Emit the given number of characters as a value of type size_t.
551 llvm::ConstantInt *getSize(CharUnits numChars);
552
Daniel Dunbar04d40782009-04-14 06:00:08 +0000553 /// setGlobalVisibility - Set the visibility for the given LLVM
554 /// GlobalValue.
Anders Carlsson0ffeaad2011-01-29 19:39:23 +0000555 void setGlobalVisibility(llvm::GlobalValue *GV, const NamedDecl *D) const;
Daniel Dunbar04d40782009-04-14 06:00:08 +0000556
Hans Wennborgde981f32012-06-28 08:01:44 +0000557 /// setTLSMode - Set the TLS mode for the given LLVM GlobalVariable
558 /// for the thread-local variable declaration D.
559 void setTLSMode(llvm::GlobalVariable *GV, const VarDecl &D) const;
560
Anders Carlssonfa2e99f2011-01-29 20:24:48 +0000561 /// TypeVisibilityKind - The kind of global variable that is passed to
562 /// setTypeVisibility
563 enum TypeVisibilityKind {
564 TVK_ForVTT,
565 TVK_ForVTable,
John McCallbda0d6b2011-03-27 09:00:25 +0000566 TVK_ForConstructionVTable,
Anders Carlssonfa2e99f2011-01-29 20:24:48 +0000567 TVK_ForRTTI,
568 TVK_ForRTTIName
569 };
570
John McCallcbfe5022010-08-04 08:34:44 +0000571 /// setTypeVisibility - Set the visibility for the given global
572 /// value which holds information about a type.
573 void setTypeVisibility(llvm::GlobalValue *GV, const CXXRecordDecl *D,
Anders Carlssonfa2e99f2011-01-29 20:24:48 +0000574 TypeVisibilityKind TVK) const;
John McCallcbfe5022010-08-04 08:34:44 +0000575
Anders Carlssonc7e98fa2011-01-29 20:59:35 +0000576 static llvm::GlobalValue::VisibilityTypes GetLLVMVisibility(Visibility V) {
577 switch (V) {
578 case DefaultVisibility: return llvm::GlobalValue::DefaultVisibility;
579 case HiddenVisibility: return llvm::GlobalValue::HiddenVisibility;
580 case ProtectedVisibility: return llvm::GlobalValue::ProtectedVisibility;
581 }
582 llvm_unreachable("unknown visibility!");
Anders Carlssonc7e98fa2011-01-29 20:59:35 +0000583 }
584
John McCalld46f9852010-02-19 01:32:20 +0000585 llvm::Constant *GetAddrOfGlobal(GlobalDecl GD) {
586 if (isa<CXXConstructorDecl>(GD.getDecl()))
587 return GetAddrOfCXXConstructor(cast<CXXConstructorDecl>(GD.getDecl()),
588 GD.getCtorType());
589 else if (isa<CXXDestructorDecl>(GD.getDecl()))
590 return GetAddrOfCXXDestructor(cast<CXXDestructorDecl>(GD.getDecl()),
591 GD.getDtorType());
592 else if (isa<FunctionDecl>(GD.getDecl()))
593 return GetAddrOfFunction(GD);
594 else
595 return GetAddrOfGlobalVar(cast<VarDecl>(GD.getDecl()));
596 }
597
John McCall64aa4b32013-04-16 22:48:15 +0000598 /// CreateOrReplaceCXXRuntimeVariable - Will return a global variable of the
599 /// given type. If a variable with a different type already exists then a new
Anders Carlsson3bd62022011-01-29 18:20:20 +0000600 /// variable with the right type will be created and all uses of the old
601 /// variable will be replaced with a bitcast to the new variable.
602 llvm::GlobalVariable *
Chris Lattner686775d2011-07-20 06:58:45 +0000603 CreateOrReplaceCXXRuntimeVariable(StringRef Name, llvm::Type *Ty,
Anders Carlsson3bd62022011-01-29 18:20:20 +0000604 llvm::GlobalValue::LinkageTypes Linkage);
605
Peter Collingbourne4dc34eb2012-05-20 21:08:35 +0000606 /// GetGlobalVarAddressSpace - Return the address space of the underlying
607 /// global variable for D, as determined by its declaration. Normally this
608 /// is the same as the address space of D's type, but in CUDA, address spaces
609 /// are associated with declarations, not types.
610 unsigned GetGlobalVarAddressSpace(const VarDecl *D, unsigned AddrSpace);
611
Mike Stumpecc90e92009-02-13 19:12:34 +0000612 /// GetAddrOfGlobalVar - Return the llvm::Constant for the address of the
Chris Lattner570585c2009-03-21 09:16:30 +0000613 /// given global variable. If Ty is non-null and if the global doesn't exist,
614 /// then it will be greated with the specified type instead of whatever the
615 /// normal requested type would be.
616 llvm::Constant *GetAddrOfGlobalVar(const VarDecl *D,
Chris Lattner2acc6e32011-07-18 04:24:23 +0000617 llvm::Type *Ty = 0);
Daniel Dunbarbd012ff2008-07-29 23:18:29 +0000618
John McCall1de4d4e2011-04-07 08:22:57 +0000619
Chris Lattner34809502009-03-21 08:53:37 +0000620 /// GetAddrOfFunction - Return the address of the given function. If Ty is
621 /// non-null, then this function will use the specified type if it has to
622 /// create it.
Chris Lattnerb4880ba2009-05-12 21:21:08 +0000623 llvm::Constant *GetAddrOfFunction(GlobalDecl GD,
Chris Lattner2acc6e32011-07-18 04:24:23 +0000624 llvm::Type *Ty = 0,
Anders Carlsson1faa89f2011-02-05 04:35:53 +0000625 bool ForVTable = false);
Daniel Dunbar61432932008-08-13 23:20:05 +0000626
Anders Carlsson1d7088d2009-12-17 07:09:17 +0000627 /// GetAddrOfRTTIDescriptor - Get the address of the RTTI descriptor
628 /// for the given type.
John McCall9dffe6f2010-04-30 01:15:21 +0000629 llvm::Constant *GetAddrOfRTTIDescriptor(QualType Ty, bool ForEH = false);
Anders Carlsson31b7f522009-12-11 02:46:30 +0000630
Nico Weberc5f80462012-10-11 10:13:44 +0000631 /// GetAddrOfUuidDescriptor - Get the address of a uuid descriptor .
632 llvm::Constant *GetAddrOfUuidDescriptor(const CXXUuidofExpr* E);
633
Anders Carlsson19879c92010-03-23 17:17:29 +0000634 /// GetAddrOfThunk - Get the address of the thunk for the given global decl.
Anders Carlsson84c49e42011-02-06 17:15:43 +0000635 llvm::Constant *GetAddrOfThunk(GlobalDecl GD, const ThunkInfo &Thunk);
Anders Carlsson19879c92010-03-23 17:17:29 +0000636
Rafael Espindola6a836702010-03-04 18:17:24 +0000637 /// GetWeakRefReference - Get a reference to the target of VD.
638 llvm::Constant *GetWeakRefReference(const ValueDecl *VD);
639
Anders Carlssonbb7e17b2010-01-31 01:36:53 +0000640 /// GetNonVirtualBaseClassOffset - Returns the offset from a derived class to
Anders Carlssone04d45e2010-04-24 21:27:51 +0000641 /// a class. Returns null if the offset is 0.
Anders Carlssona04efdf2010-04-24 21:23:59 +0000642 llvm::Constant *
643 GetNonVirtualBaseClassOffset(const CXXRecordDecl *ClassDecl,
John McCallf871d0c2010-08-07 06:22:56 +0000644 CastExpr::path_const_iterator PathBegin,
645 CastExpr::path_const_iterator PathEnd);
John McCalld16c2cf2011-02-08 08:22:06 +0000646
John McCallf0c11f72011-03-31 08:03:29 +0000647 /// A pair of helper functions for a __block variable.
648 class ByrefHelpers : public llvm::FoldingSetNode {
649 public:
650 llvm::Constant *CopyHelper;
651 llvm::Constant *DisposeHelper;
652
653 /// The alignment of the field. This is important because
654 /// different offsets to the field within the byref struct need to
655 /// have different helper functions.
656 CharUnits Alignment;
657
658 ByrefHelpers(CharUnits alignment) : Alignment(alignment) {}
659 virtual ~ByrefHelpers();
660
661 void Profile(llvm::FoldingSetNodeID &id) const {
662 id.AddInteger(Alignment.getQuantity());
663 profileImpl(id);
664 }
665 virtual void profileImpl(llvm::FoldingSetNodeID &id) const = 0;
666
667 virtual bool needsCopy() const { return true; }
668 virtual void emitCopy(CodeGenFunction &CGF,
669 llvm::Value *dest, llvm::Value *src) = 0;
670
671 virtual bool needsDispose() const { return true; }
672 virtual void emitDispose(CodeGenFunction &CGF, llvm::Value *field) = 0;
673 };
674
675 llvm::FoldingSet<ByrefHelpers> ByrefHelpersCache;
John McCalld16c2cf2011-02-08 08:22:06 +0000676
John McCall8178df32011-02-22 22:38:33 +0000677 /// getUniqueBlockCount - Fetches the global unique block count.
678 int getUniqueBlockCount() { return ++Block.GlobalUniqueCount; }
Fariborz Jahanian4904bf42012-06-26 16:06:38 +0000679
John McCalld16c2cf2011-02-08 08:22:06 +0000680 /// getBlockDescriptorType - Fetches the type of a generic block
681 /// descriptor.
Chris Lattner9cbe4f02011-07-09 17:41:47 +0000682 llvm::Type *getBlockDescriptorType();
John McCalld16c2cf2011-02-08 08:22:06 +0000683
684 /// getGenericBlockLiteralType - The type of a generic block literal.
Chris Lattner9cbe4f02011-07-09 17:41:47 +0000685 llvm::Type *getGenericBlockLiteralType();
John McCalld16c2cf2011-02-08 08:22:06 +0000686
687 /// GetAddrOfGlobalBlock - Gets the address of a block which
688 /// requires no captures.
689 llvm::Constant *GetAddrOfGlobalBlock(const BlockExpr *BE, const char *);
Anders Carlssona04efdf2010-04-24 21:23:59 +0000690
Mike Stumpecc90e92009-02-13 19:12:34 +0000691 /// GetAddrOfConstantCFString - Return a pointer to a constant CFString object
692 /// for the given string.
Steve Naroff8d4141f2009-04-01 13:55:36 +0000693 llvm::Constant *GetAddrOfConstantCFString(const StringLiteral *Literal);
Fariborz Jahanian33e982b2010-04-22 20:26:39 +0000694
Fariborz Jahanian4c733072010-10-19 17:19:29 +0000695 /// GetAddrOfConstantString - Return a pointer to a constant NSString object
696 /// for the given string. Or a user defined String object as defined via
697 /// -fconstant-string-class=class_name option.
698 llvm::Constant *GetAddrOfConstantString(const StringLiteral *Literal);
Chris Lattnera7ad98f2008-02-11 00:02:17 +0000699
Eli Friedman64f45a22011-11-01 02:23:42 +0000700 /// GetConstantArrayFromStringLiteral - Return a constant array for the given
701 /// string.
702 llvm::Constant *GetConstantArrayFromStringLiteral(const StringLiteral *E);
703
Mike Stumpecc90e92009-02-13 19:12:34 +0000704 /// GetAddrOfConstantStringFromLiteral - Return a pointer to a constant array
705 /// for the given string literal.
Daniel Dunbar61432932008-08-13 23:20:05 +0000706 llvm::Constant *GetAddrOfConstantStringFromLiteral(const StringLiteral *S);
Daniel Dunbar1e049762008-08-10 20:25:57 +0000707
Chris Lattnereaf2bb82009-02-24 22:18:39 +0000708 /// GetAddrOfConstantStringFromObjCEncode - Return a pointer to a constant
709 /// array for the given ObjCEncodeExpr node.
710 llvm::Constant *GetAddrOfConstantStringFromObjCEncode(const ObjCEncodeExpr *);
Mike Stump1eb44332009-09-09 15:08:12 +0000711
Daniel Dunbar61432932008-08-13 23:20:05 +0000712 /// GetAddrOfConstantString - Returns a pointer to a character array
Mike Stumpecc90e92009-02-13 19:12:34 +0000713 /// containing the literal. This contents are exactly that of the given
714 /// string, i.e. it will not be null terminated automatically; see
715 /// GetAddrOfConstantCString. Note that whether the result is actually a
716 /// pointer to an LLVM constant depends on Feature.WriteableStrings.
Daniel Dunbar61432932008-08-13 23:20:05 +0000717 ///
718 /// The result has pointer to array type.
Daniel Dunbar5fabf9d2008-10-17 21:56:50 +0000719 ///
720 /// \param GlobalName If provided, the name to use for the global
721 /// (if one is created).
Chris Lattner686775d2011-07-20 06:58:45 +0000722 llvm::Constant *GetAddrOfConstantString(StringRef Str,
John McCalla5e19c62011-08-04 01:03:22 +0000723 const char *GlobalName=0,
Ulrich Weigand6b203512013-05-06 16:23:57 +0000724 unsigned Alignment=0);
Daniel Dunbar61432932008-08-13 23:20:05 +0000725
Mike Stumpecc90e92009-02-13 19:12:34 +0000726 /// GetAddrOfConstantCString - Returns a pointer to a character array
727 /// containing the literal and a terminating '\0' character. The result has
728 /// pointer to array type.
Daniel Dunbar5fabf9d2008-10-17 21:56:50 +0000729 ///
Mike Stumpecc90e92009-02-13 19:12:34 +0000730 /// \param GlobalName If provided, the name to use for the global (if one is
731 /// created).
Daniel Dunbar5fabf9d2008-10-17 21:56:50 +0000732 llvm::Constant *GetAddrOfConstantCString(const std::string &str,
John McCalla5e19c62011-08-04 01:03:22 +0000733 const char *GlobalName=0,
Ulrich Weigand6b203512013-05-06 16:23:57 +0000734 unsigned Alignment=0);
Richard Smith7401cf52011-11-22 22:48:32 +0000735
736 /// GetAddrOfConstantCompoundLiteral - Returns a pointer to a constant global
737 /// variable for the given file-scope compound literal expression.
738 llvm::Constant *GetAddrOfConstantCompoundLiteral(const CompoundLiteralExpr*E);
Richard Smith211c8dd2013-06-05 00:46:14 +0000739
740 /// \brief Returns a pointer to a global variable representing a temporary
741 /// with static or thread storage duration.
742 llvm::Constant *GetAddrOfGlobalTemporary(const MaterializeTemporaryExpr *E,
743 const Expr *Inner);
744
Douglas Gregor0815b572011-08-09 17:23:49 +0000745 /// \brief Retrieve the record type that describes the state of an
746 /// Objective-C fast enumeration loop (for..in).
747 QualType getObjCFastEnumerationStateType();
748
Anders Carlsson363c1842009-04-16 23:57:24 +0000749 /// GetAddrOfCXXConstructor - Return the address of the constructor of the
750 /// given type.
John McCall1f6f9612011-03-09 08:12:35 +0000751 llvm::GlobalValue *GetAddrOfCXXConstructor(const CXXConstructorDecl *ctor,
752 CXXCtorType ctorType,
753 const CGFunctionInfo *fnInfo = 0);
Anders Carlsson27ae5362009-04-17 01:58:57 +0000754
755 /// GetAddrOfCXXDestructor - Return the address of the constructor of the
756 /// given type.
John McCall1f6f9612011-03-09 08:12:35 +0000757 llvm::GlobalValue *GetAddrOfCXXDestructor(const CXXDestructorDecl *dtor,
758 CXXDtorType dtorType,
Reid Klecknera4130ba2013-07-22 13:51:44 +0000759 const CGFunctionInfo *fnInfo = 0,
760 llvm::FunctionType *fnType = 0);
Mike Stump1eb44332009-09-09 15:08:12 +0000761
Daniel Dunbar41071de2008-08-15 23:26:23 +0000762 /// getBuiltinLibFunction - Given a builtin id for a function like
763 /// "__builtin_fabsf", return a Function* for "fabsf".
Daniel Dunbar34771b52009-09-14 04:33:21 +0000764 llvm::Value *getBuiltinLibFunction(const FunctionDecl *FD,
765 unsigned BuiltinID);
Daniel Dunbar61432932008-08-13 23:20:05 +0000766
Dmitri Gribenko55431692013-05-05 00:41:58 +0000767 llvm::Function *getIntrinsic(unsigned IID, ArrayRef<llvm::Type*> Tys = None);
Daniel Dunbarbd012ff2008-07-29 23:18:29 +0000768
Daniel Dunbar41071de2008-08-15 23:26:23 +0000769 /// EmitTopLevelDecl - Emit code for a single top level declaration.
770 void EmitTopLevelDecl(Decl *D);
Daniel Dunbarbd012ff2008-07-29 23:18:29 +0000771
Rafael Espindola02503932012-03-08 15:51:03 +0000772 /// HandleCXXStaticMemberVarInstantiation - Tell the consumer that this
773 // variable has been instantiated.
774 void HandleCXXStaticMemberVarInstantiation(VarDecl *VD);
Rafael Espindola234fe652012-03-05 10:54:55 +0000775
Richard Smith00249372013-04-06 05:00:46 +0000776 /// \brief If the declaration has internal linkage but is inside an
777 /// extern "C" linkage specification, prepare to emit an alias for it
778 /// to the expected name.
779 template<typename SomeDecl>
780 void MaybeHandleStaticInExternC(const SomeDecl *D, llvm::GlobalValue *GV);
781
Daniel Dunbar02698712009-02-13 20:29:50 +0000782 /// AddUsedGlobal - Add a global which should be forced to be
783 /// present in the object file; these are emitted to the llvm.used
784 /// metadata global.
785 void AddUsedGlobal(llvm::GlobalValue *GV);
786
Daniel Dunbarefb0fa92010-03-20 04:15:41 +0000787 /// AddCXXDtorEntry - Add a destructor and object to add to the C++ global
788 /// destructor function.
Chris Lattner810112e2010-06-19 05:52:45 +0000789 void AddCXXDtorEntry(llvm::Constant *DtorFn, llvm::Constant *Object) {
790 CXXGlobalDtors.push_back(std::make_pair(DtorFn, Object));
791 }
Daniel Dunbarefb0fa92010-03-20 04:15:41 +0000792
Chris Lattner74391b42009-03-22 21:03:39 +0000793 /// CreateRuntimeFunction - Create a new runtime function with the specified
794 /// type and name.
Chris Lattner2acc6e32011-07-18 04:24:23 +0000795 llvm::Constant *CreateRuntimeFunction(llvm::FunctionType *Ty,
Chris Lattner686775d2011-07-20 06:58:45 +0000796 StringRef Name,
Bill Wendlingc4c62fd2013-01-31 00:30:05 +0000797 llvm::AttributeSet ExtraAttrs =
798 llvm::AttributeSet());
Chris Lattner74391b42009-03-22 21:03:39 +0000799 /// CreateRuntimeVariable - Create a new runtime global variable with the
800 /// specified type and name.
Chris Lattner2acc6e32011-07-18 04:24:23 +0000801 llvm::Constant *CreateRuntimeVariable(llvm::Type *Ty,
Chris Lattner686775d2011-07-20 06:58:45 +0000802 StringRef Name);
Daniel Dunbarf1968f22008-10-01 00:49:24 +0000803
Daniel Dunbar673431a2010-07-16 00:00:15 +0000804 ///@name Custom Blocks Runtime Interfaces
805 ///@{
806
807 llvm::Constant *getNSConcreteGlobalBlock();
808 llvm::Constant *getNSConcreteStackBlock();
809 llvm::Constant *getBlockObjectAssign();
810 llvm::Constant *getBlockObjectDispose();
811
812 ///@}
813
Nadav Rotem495cfa42013-03-23 06:43:35 +0000814 llvm::Constant *getLLVMLifetimeStartFn();
815 llvm::Constant *getLLVMLifetimeEndFn();
816
Devang Patele80d5672011-03-23 16:29:39 +0000817 // UpdateCompleteType - Make sure that this type is translated.
818 void UpdateCompletedType(const TagDecl *TD);
Daniel Dunbard60f2fb2009-02-17 18:43:32 +0000819
John McCall5808ce42011-02-03 08:15:49 +0000820 llvm::Constant *getMemberPointerConstant(const UnaryOperator *e);
821
Richard Smith2d6a5672012-01-14 04:30:29 +0000822 /// EmitConstantInit - Try to emit the initializer for the given declaration
823 /// as a constant; returns 0 if the expression cannot be emitted as a
824 /// constant.
825 llvm::Constant *EmitConstantInit(const VarDecl &D, CodeGenFunction *CGF = 0);
826
Daniel Dunbard60f2fb2009-02-17 18:43:32 +0000827 /// EmitConstantExpr - Try to emit the given expression as a
828 /// constant; returns 0 if the expression cannot be emitted as a
829 /// constant.
Anders Carlssone9352cc2009-04-08 04:48:15 +0000830 llvm::Constant *EmitConstantExpr(const Expr *E, QualType DestType,
831 CodeGenFunction *CGF = 0);
Daniel Dunbard60f2fb2009-02-17 18:43:32 +0000832
Richard Smitha3ca41f2012-03-02 23:27:11 +0000833 /// EmitConstantValue - Emit the given constant value as a constant, in the
834 /// type's scalar representation.
Richard Smith2d6a5672012-01-14 04:30:29 +0000835 llvm::Constant *EmitConstantValue(const APValue &Value, QualType DestType,
836 CodeGenFunction *CGF = 0);
837
Richard Smitha3ca41f2012-03-02 23:27:11 +0000838 /// EmitConstantValueForMemory - Emit the given constant value as a constant,
839 /// in the type's memory representation.
840 llvm::Constant *EmitConstantValueForMemory(const APValue &Value,
841 QualType DestType,
842 CodeGenFunction *CGF = 0);
843
Eli Friedman0f593122009-04-13 21:47:26 +0000844 /// EmitNullConstant - Return the result of value-initializing the given
845 /// type, i.e. a null expression of the given type. This is usually,
846 /// but not always, an LLVM null constant.
847 llvm::Constant *EmitNullConstant(QualType T);
848
Eli Friedman2ed7cb62011-10-14 02:27:24 +0000849 /// EmitNullConstantForBase - Return a null constant appropriate for
850 /// zero-initializing a base class with the given type. This is usually,
851 /// but not always, an LLVM null constant.
852 llvm::Constant *EmitNullConstantForBase(const CXXRecordDecl *Record);
853
John McCall32096692011-03-18 02:56:14 +0000854 /// Error - Emit a general error that something can't be done.
Chandler Carruth0f30a122012-03-30 19:44:53 +0000855 void Error(SourceLocation loc, StringRef error);
John McCall32096692011-03-18 02:56:14 +0000856
Daniel Dunbar488e9932008-08-16 00:56:44 +0000857 /// ErrorUnsupported - Print out an error that codegen doesn't support the
Daniel Dunbar90df4b62008-09-04 03:43:08 +0000858 /// specified stmt yet.
David Blaikie0a1c8622013-08-19 21:02:26 +0000859 void ErrorUnsupported(const Stmt *S, const char *Type);
Mike Stumpecc90e92009-02-13 19:12:34 +0000860
Daniel Dunbar488e9932008-08-16 00:56:44 +0000861 /// ErrorUnsupported - Print out an error that codegen doesn't support the
Chris Lattnerc6fdc342008-01-12 07:05:38 +0000862 /// specified decl yet.
David Blaikie0a1c8622013-08-19 21:02:26 +0000863 void ErrorUnsupported(const Decl *D, const char *Type);
Dan Gohman4f8d1232008-05-22 00:50:06 +0000864
Daniel Dunbar0e4f40e2009-04-17 00:48:04 +0000865 /// SetInternalFunctionAttributes - Set the attributes on the LLVM
866 /// function for the given decl and function info. This applies
867 /// attributes necessary for handling the ABI as well as user
868 /// specified attributes like section.
869 void SetInternalFunctionAttributes(const Decl *D, llvm::Function *F,
870 const CGFunctionInfo &FI);
Daniel Dunbarf80519b2008-09-04 23:41:35 +0000871
Daniel Dunbar7dbd8192009-04-14 07:08:30 +0000872 /// SetLLVMFunctionAttributes - Set the LLVM function attributes
873 /// (sext, zext, etc).
874 void SetLLVMFunctionAttributes(const Decl *D,
875 const CGFunctionInfo &Info,
876 llvm::Function *F);
Daniel Dunbarb7688072008-09-10 00:41:16 +0000877
Daniel Dunbar7c65e992009-04-14 08:05:55 +0000878 /// SetLLVMFunctionAttributesForDefinition - Set the LLVM function attributes
879 /// which only apply to a function definintion.
880 void SetLLVMFunctionAttributesForDefinition(const Decl *D, llvm::Function *F);
881
Sylvestre Ledruf3477c12012-09-27 10:16:10 +0000882 /// ReturnTypeUsesSRet - Return true iff the given type uses 'sret' when used
Mike Stumpecc90e92009-02-13 19:12:34 +0000883 /// as a return type.
Daniel Dunbardacf9dd2010-07-14 23:39:36 +0000884 bool ReturnTypeUsesSRet(const CGFunctionInfo &FI);
885
Sylvestre Ledruf3477c12012-09-27 10:16:10 +0000886 /// ReturnTypeUsesFPRet - Return true iff the given type uses 'fpret' when
Anders Carlssoneea64802011-10-31 16:27:11 +0000887 /// used as a return type.
Daniel Dunbardacf9dd2010-07-14 23:39:36 +0000888 bool ReturnTypeUsesFPRet(QualType ResultType);
Daniel Dunbarb7688072008-09-10 00:41:16 +0000889
Sylvestre Ledruf3477c12012-09-27 10:16:10 +0000890 /// ReturnTypeUsesFP2Ret - Return true iff the given type uses 'fp2ret' when
Anders Carlssoneea64802011-10-31 16:27:11 +0000891 /// used as a return type.
892 bool ReturnTypeUsesFP2Ret(QualType ResultType);
893
Daniel Dunbarca6408c2009-09-12 00:59:20 +0000894 /// ConstructAttributeList - Get the LLVM attributes and calling convention to
895 /// use for a particular function type.
896 ///
897 /// \param Info - The function type information.
898 /// \param TargetDecl - The decl these attributes are being constructed
899 /// for. If supplied the attributes applied to this decl may contribute to the
900 /// function attributes and calling convention.
901 /// \param PAL [out] - On return, the attribute list to use.
902 /// \param CallingConv [out] - On return, the LLVM calling convention to use.
Daniel Dunbar88b53962009-02-02 22:03:45 +0000903 void ConstructAttributeList(const CGFunctionInfo &Info,
904 const Decl *TargetDecl,
Daniel Dunbarca6408c2009-09-12 00:59:20 +0000905 AttributeListType &PAL,
Bill Wendling94236e72013-02-22 00:13:35 +0000906 unsigned &CallingConv,
907 bool AttrOnCallSite);
Daniel Dunbarb7688072008-09-10 00:41:16 +0000908
Chris Lattner686775d2011-07-20 06:58:45 +0000909 StringRef getMangledName(GlobalDecl GD);
Peter Collingbourne14110472011-01-13 18:57:25 +0000910 void getBlockMangledName(GlobalDecl GD, MangleBuffer &Buffer,
911 const BlockDecl *BD);
Douglas Gregorb6c8c8b2009-04-21 17:11:58 +0000912
913 void EmitTentativeDefinition(const VarDecl *D);
Mike Stumpf1216772009-07-31 18:25:34 +0000914
Douglas Gregor6fb745b2010-05-13 16:44:06 +0000915 void EmitVTable(CXXRecordDecl *Class, bool DefinitionRequired);
916
Timur Iskhodzhanova53d7a02013-09-27 14:48:01 +0000917 /// EmitFundamentalRTTIDescriptors - Emit the RTTI descriptors for the
918 /// builtin types.
919 void EmitFundamentalRTTIDescriptors();
920
Reid Kleckner3190ca92013-05-08 13:44:39 +0000921 /// \brief Appends Opts to the "Linker Options" metadata value.
922 void AppendLinkerOptions(StringRef Opts);
923
Benjamin Kramer785f1e72013-06-04 09:13:21 +0000924 /// \brief Appends a detect mismatch command to the linker options.
Aaron Ballmana7ff62f2013-06-04 02:07:14 +0000925 void AddDetectMismatch(StringRef Name, StringRef Value);
926
Reid Kleckner3190ca92013-05-08 13:44:39 +0000927 /// \brief Appends a dependent lib to the "Linker Options" metadata value.
928 void AddDependentLib(StringRef Lib);
929
Peter Collingbourne144a31f2013-06-05 17:49:37 +0000930 llvm::GlobalVariable::LinkageTypes getFunctionLinkage(GlobalDecl GD);
John McCalld46f9852010-02-19 01:32:20 +0000931
Peter Collingbourne144a31f2013-06-05 17:49:37 +0000932 void setFunctionLinkage(GlobalDecl GD, llvm::GlobalValue *V) {
933 V->setLinkage(getFunctionLinkage(GD));
John McCall8b242332010-05-25 04:30:21 +0000934 }
935
Anders Carlsson046c2942010-04-17 20:15:18 +0000936 /// getVTableLinkage - Return the appropriate linkage for the vtable, VTT,
Douglas Gregor4b0f21c2010-01-06 20:27:16 +0000937 /// and type information of the given class.
Anders Carlsson3a717f72011-01-24 02:04:33 +0000938 llvm::GlobalVariable::LinkageTypes getVTableLinkage(const CXXRecordDecl *RD);
Ken Dyck687cc4a2010-01-26 13:48:07 +0000939
940 /// GetTargetTypeStoreSize - Return the store size, in character units, of
941 /// the given LLVM type.
Chris Lattner2acc6e32011-07-18 04:24:23 +0000942 CharUnits GetTargetTypeStoreSize(llvm::Type *Ty) const;
Fariborz Jahanian354e7122010-10-27 16:21:54 +0000943
944 /// GetLLVMLinkageVarDefinition - Returns LLVM linkage for a global
945 /// variable.
946 llvm::GlobalValue::LinkageTypes
Eli Friedman07369dd2013-07-01 20:22:57 +0000947 GetLLVMLinkageVarDefinition(const VarDecl *D, bool isConstant);
Fariborz Jahanian354e7122010-10-27 16:21:54 +0000948
Julien Lerouge77f68bb2011-09-09 22:41:49 +0000949 /// Emit all the global annotations.
950 void EmitGlobalAnnotations();
951
952 /// Emit an annotation string.
Dmitri Gribenkocfa88f82013-01-12 19:30:44 +0000953 llvm::Constant *EmitAnnotationString(StringRef Str);
Julien Lerouge77f68bb2011-09-09 22:41:49 +0000954
955 /// Emit the annotation's translation unit.
956 llvm::Constant *EmitAnnotationUnit(SourceLocation Loc);
957
958 /// Emit the annotation line number.
959 llvm::Constant *EmitAnnotationLineNo(SourceLocation L);
960
961 /// EmitAnnotateAttr - Generate the llvm::ConstantStruct which contains the
962 /// annotation information for a given GlobalValue. The annotation struct is
963 /// {i8 *, i8 *, i8 *, i32}. The first field is a constant expression, the
964 /// GlobalValue being annotated. The second field is the constant string
965 /// created from the AnnotateAttr's annotation. The third field is a constant
966 /// string containing the name of the translation unit. The fourth field is
967 /// the line number in the file of the annotated value declaration.
968 llvm::Constant *EmitAnnotateAttr(llvm::GlobalValue *GV,
969 const AnnotateAttr *AA,
970 SourceLocation L);
971
972 /// Add global annotations that are set on D, for the global GV. Those
973 /// annotations are emitted during finalization of the LLVM code.
974 void AddGlobalAnnotations(const ValueDecl *D, llvm::GlobalValue *GV);
975
Peter Collingbournea9679352013-07-09 22:03:30 +0000976 const llvm::SpecialCaseList &getSanitizerBlacklist() const {
Alexey Samsonov6a4c5dc2013-08-12 11:48:05 +0000977 return *SanitizerBlacklist;
Will Dietz4f45bc02013-01-18 11:30:38 +0000978 }
979
980 const SanitizerOptions &getSanOpts() const { return SanOpts; }
981
John McCalld5617ee2013-01-25 22:31:03 +0000982 void addDeferredVTable(const CXXRecordDecl *RD) {
983 DeferredVTables.push_back(RD);
984 }
985
Reid Klecknera4130ba2013-07-22 13:51:44 +0000986 /// EmitGlobal - Emit code for a singal global function or var decl. Forward
987 /// declarations are emitted lazily.
988 void EmitGlobal(GlobalDecl D);
989
Chris Lattner9cd4fe42007-12-02 07:09:19 +0000990private:
Chris Lattner686775d2011-07-20 06:58:45 +0000991 llvm::GlobalValue *GetGlobalValue(StringRef Ref);
Mike Stump1eb44332009-09-09 15:08:12 +0000992
Chris Lattner686775d2011-07-20 06:58:45 +0000993 llvm::Constant *GetOrCreateLLVMFunction(StringRef MangledName,
Chris Lattner2acc6e32011-07-18 04:24:23 +0000994 llvm::Type *Ty,
Anders Carlsson1faa89f2011-02-05 04:35:53 +0000995 GlobalDecl D,
John McCallf85e1932011-06-15 23:02:42 +0000996 bool ForVTable,
Bill Wendlingc4c62fd2013-01-31 00:30:05 +0000997 llvm::AttributeSet ExtraAttrs =
998 llvm::AttributeSet());
Chris Lattner686775d2011-07-20 06:58:45 +0000999 llvm::Constant *GetOrCreateLLVMGlobal(StringRef MangledName,
Chris Lattner2acc6e32011-07-18 04:24:23 +00001000 llvm::PointerType *PTy,
Rafael Espindolac532b502011-01-18 21:07:57 +00001001 const VarDecl *D,
1002 bool UnnamedAddr = false);
Mike Stump1eb44332009-09-09 15:08:12 +00001003
Daniel Dunbar7c65e992009-04-14 08:05:55 +00001004 /// SetCommonAttributes - Set attributes which are common to any
1005 /// form of a global definition (alias, Objective-C method,
1006 /// function, global variable).
Daniel Dunbar7dbd8192009-04-14 07:08:30 +00001007 ///
Daniel Dunbar7c65e992009-04-14 08:05:55 +00001008 /// NOTE: This should only be called for definitions.
1009 void SetCommonAttributes(const Decl *D, llvm::GlobalValue *GV);
Daniel Dunbarf80519b2008-09-04 23:41:35 +00001010
Daniel Dunbar7c65e992009-04-14 08:05:55 +00001011 /// SetFunctionDefinitionAttributes - Set attributes for a global definition.
Mike Stump1eb44332009-09-09 15:08:12 +00001012 void SetFunctionDefinitionAttributes(const FunctionDecl *D,
Eli Friedmanc6c14d12009-05-26 01:22:57 +00001013 llvm::GlobalValue *GV);
Mike Stump1eb44332009-09-09 15:08:12 +00001014
Daniel Dunbar7dbd8192009-04-14 07:08:30 +00001015 /// SetFunctionAttributes - Set function attributes for a function
1016 /// declaration.
Anders Carlssonb2bcf1c2010-02-06 02:44:09 +00001017 void SetFunctionAttributes(GlobalDecl GD,
Eli Friedmanc6c14d12009-05-26 01:22:57 +00001018 llvm::Function *F,
1019 bool IsIncompleteFunction);
Nuno Lopesd4cbda62008-06-08 15:45:52 +00001020
Chris Lattnerb4880ba2009-05-12 21:21:08 +00001021 void EmitGlobalDefinition(GlobalDecl D);
Daniel Dunbard5d31802009-02-19 07:15:39 +00001022
Chris Lattnerb4880ba2009-05-12 21:21:08 +00001023 void EmitGlobalFunctionDefinition(GlobalDecl GD);
Daniel Dunbarbd012ff2008-07-29 23:18:29 +00001024 void EmitGlobalVarDefinition(const VarDecl *D);
John McCallf746aa62010-03-19 23:29:14 +00001025 void EmitAliasDefinition(GlobalDecl GD);
Daniel Dunbaraf05bb92008-08-26 08:29:31 +00001026 void EmitObjCPropertyImplementations(const ObjCImplementationDecl *D);
Fariborz Jahanian109dfc62010-04-28 21:28:56 +00001027 void EmitObjCIvarInitializations(ObjCImplementationDecl *D);
Fariborz Jahanian354e7122010-10-27 16:21:54 +00001028
Anders Carlsson95d4e5d2009-04-15 15:55:24 +00001029 // C++ related functions.
Mike Stump1eb44332009-09-09 15:08:12 +00001030
John McCalld46f9852010-02-19 01:32:20 +00001031 bool TryEmitDefinitionAsAlias(GlobalDecl Alias, GlobalDecl Target);
John McCallc0bf4622010-02-23 00:48:20 +00001032 bool TryEmitBaseDestructorAsAlias(const CXXDestructorDecl *D);
John McCalld46f9852010-02-19 01:32:20 +00001033
Anders Carlsson984e0682009-04-01 00:58:25 +00001034 void EmitNamespace(const NamespaceDecl *D);
Anders Carlsson91e20dd2009-04-02 05:55:18 +00001035 void EmitLinkageSpec(const LinkageSpecDecl *D);
Adrian Prantl0a050f72013-05-09 23:16:27 +00001036 void CompleteDIClassType(const CXXMethodDecl* D);
Anders Carlsson95d4e5d2009-04-15 15:55:24 +00001037
Anders Carlsson95d4e5d2009-04-15 15:55:24 +00001038 /// EmitCXXConstructor - Emit a single constructor with the given type from
1039 /// a C++ constructor Decl.
1040 void EmitCXXConstructor(const CXXConstructorDecl *D, CXXCtorType Type);
Mike Stump1eb44332009-09-09 15:08:12 +00001041
Anders Carlsson27ae5362009-04-17 01:58:57 +00001042 /// EmitCXXDestructor - Emit a single destructor with the given type from
1043 /// a C++ destructor Decl.
1044 void EmitCXXDestructor(const CXXDestructorDecl *D, CXXDtorType Type);
Mike Stump1eb44332009-09-09 15:08:12 +00001045
Richard Smithb80a16e2013-04-19 16:42:07 +00001046 /// \brief Emit the function that initializes C++ thread_local variables.
1047 void EmitCXXThreadLocalInitFunc();
1048
Daniel Dunbarefb0fa92010-03-20 04:15:41 +00001049 /// EmitCXXGlobalInitFunc - Emit the function that initializes C++ globals.
Anders Carlsson89ed31d2009-08-08 23:24:23 +00001050 void EmitCXXGlobalInitFunc();
Eli Friedman6c6bda32010-01-08 00:50:11 +00001051
Daniel Dunbarefb0fa92010-03-20 04:15:41 +00001052 /// EmitCXXGlobalDtorFunc - Emit the function that destroys C++ globals.
1053 void EmitCXXGlobalDtorFunc();
1054
Richard Smith7ca48502012-02-13 22:16:19 +00001055 /// EmitCXXGlobalVarDeclInitFunc - Emit the function that initializes the
1056 /// specified global (if PerformInit is true) and registers its destructor.
John McCall3030eb82010-11-06 09:44:32 +00001057 void EmitCXXGlobalVarDeclInitFunc(const VarDecl *D,
Richard Smith7ca48502012-02-13 22:16:19 +00001058 llvm::GlobalVariable *Addr,
1059 bool PerformInit);
Eli Friedman6c6bda32010-01-08 00:50:11 +00001060
Daniel Dunbar6bfed7e2008-08-01 00:01:51 +00001061 // FIXME: Hardcoding priority here is gross.
Chris Lattnerb4880ba2009-05-12 21:21:08 +00001062 void AddGlobalCtor(llvm::Function *Ctor, int Priority=65535);
1063 void AddGlobalDtor(llvm::Function *Dtor, int Priority=65535);
Daniel Dunbarbd012ff2008-07-29 23:18:29 +00001064
Mike Stumpecc90e92009-02-13 19:12:34 +00001065 /// EmitCtorList - Generates a global array of functions and priorities using
1066 /// the given list and name. This array will have appending linkage and is
1067 /// suitable for use as a LLVM constructor or destructor array.
Daniel Dunbar6bfed7e2008-08-01 00:01:51 +00001068 void EmitCtorList(const CtorList &Fns, const char *GlobalName);
1069
Rafael Espindolad1a5c312010-03-27 02:52:14 +00001070 /// EmitFundamentalRTTIDescriptor - Emit the RTTI descriptors for the
1071 /// given type.
1072 void EmitFundamentalRTTIDescriptor(QualType Type);
1073
Daniel Dunbar42745812009-03-09 23:53:08 +00001074 /// EmitDeferred - Emit any needed decls for which code generation
1075 /// was deferred.
Dmitri Gribenkoc4a77902012-11-15 14:28:07 +00001076 void EmitDeferred();
Daniel Dunbar02698712009-02-13 20:29:50 +00001077
John McCalld5617ee2013-01-25 22:31:03 +00001078 /// EmitDeferredVTables - Emit any vtables which we deferred and
1079 /// still have a use for.
1080 void EmitDeferredVTables();
1081
Daniel Dunbar42745812009-03-09 23:53:08 +00001082 /// EmitLLVMUsed - Emit the llvm.used metadata used to force
1083 /// references to global which may otherwise be optimized out.
Dmitri Gribenkoc4a77902012-11-15 14:28:07 +00001084 void EmitLLVMUsed();
Daniel Dunbarf1968f22008-10-01 00:49:24 +00001085
Douglas Gregor858afb32013-01-14 20:53:57 +00001086 /// \brief Emit the link options introduced by imported modules.
1087 void EmitModuleLinkOptions();
1088
Richard Smith00249372013-04-06 05:00:46 +00001089 /// \brief Emit aliases for internal-linkage declarations inside "C" language
1090 /// linkage specifications, giving them the "expected" name where possible.
1091 void EmitStaticExternCAliases();
1092
John McCall744016d2010-07-06 23:57:41 +00001093 void EmitDeclMetadata();
1094
Nick Lewycky3dc05412011-05-05 00:08:20 +00001095 /// EmitCoverageFile - Emit the llvm.gcov metadata used to tell LLVM where
Nick Lewycky5ea4f442011-05-04 20:46:58 +00001096 /// to emit the .gcno and .gcda files in a way that persists in .bc files.
Nick Lewycky3dc05412011-05-05 00:08:20 +00001097 void EmitCoverageFile();
Nick Lewycky5ea4f442011-05-04 20:46:58 +00001098
Nico Weberc5f80462012-10-11 10:13:44 +00001099 /// Emits the initializer for a uuidof string.
1100 llvm::Constant *EmitUuidofInitializer(StringRef uuidstr, QualType IIDType);
1101
Daniel Dunbar42745812009-03-09 23:53:08 +00001102 /// MayDeferGeneration - Determine if the given decl can be emitted
1103 /// lazily; this is only relevant for definitions. The given decl
1104 /// must be either a function or var decl.
Daniel Dunbar73241df2009-02-13 21:18:01 +00001105 bool MayDeferGeneration(const ValueDecl *D);
John McCallb2593832010-09-16 06:16:50 +00001106
1107 /// SimplifyPersonality - Check whether we can use a "simpler", more
1108 /// core exceptions personality function.
1109 void SimplifyPersonality();
Reid Spencer5f016e22007-07-11 17:01:13 +00001110};
1111} // end namespace CodeGen
1112} // end namespace clang
1113
1114#endif