1142 lines
42 KiB
C++
1142 lines
42 KiB
C++
//===--- CodeGenModule.h - Per-Module state for LLVM CodeGen ----*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This is the internal per-translation-unit state used for llvm translation.
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//
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//===----------------------------------------------------------------------===//
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#ifndef CLANG_CODEGEN_CODEGENMODULE_H
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#define CLANG_CODEGEN_CODEGENMODULE_H
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#include "CGVTables.h"
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#include "CodeGenTypes.h"
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#include "clang/AST/Attr.h"
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#include "clang/AST/DeclCXX.h"
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#include "clang/AST/DeclObjC.h"
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#include "clang/AST/GlobalDecl.h"
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#include "clang/AST/Mangle.h"
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#include "clang/Basic/ABI.h"
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#include "clang/Basic/LangOptions.h"
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#include "clang/Basic/Module.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/SetVector.h"
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#include "llvm/ADT/SmallPtrSet.h"
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#include "llvm/ADT/StringMap.h"
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#include "llvm/IR/CallingConv.h"
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#include "llvm/IR/Module.h"
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#include "llvm/Support/ValueHandle.h"
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#include "llvm/Transforms/Utils/SpecialCaseList.h"
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namespace llvm {
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class Module;
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class Constant;
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class ConstantInt;
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class Function;
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class GlobalValue;
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class DataLayout;
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class FunctionType;
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class LLVMContext;
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}
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namespace clang {
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class TargetCodeGenInfo;
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class ASTContext;
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class AtomicType;
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class FunctionDecl;
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class IdentifierInfo;
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class ObjCMethodDecl;
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class ObjCImplementationDecl;
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class ObjCCategoryImplDecl;
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class ObjCProtocolDecl;
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class ObjCEncodeExpr;
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class BlockExpr;
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class CharUnits;
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class Decl;
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class Expr;
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class Stmt;
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class InitListExpr;
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class StringLiteral;
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class NamedDecl;
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class ValueDecl;
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class VarDecl;
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class LangOptions;
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class CodeGenOptions;
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class DiagnosticsEngine;
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class AnnotateAttr;
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class CXXDestructorDecl;
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class MangleBuffer;
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class Module;
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namespace CodeGen {
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class CallArgList;
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class CodeGenFunction;
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class CodeGenTBAA;
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class CGCXXABI;
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class CGDebugInfo;
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class CGObjCRuntime;
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class CGOpenCLRuntime;
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class CGCUDARuntime;
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class BlockFieldFlags;
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class FunctionArgList;
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struct OrderGlobalInits {
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unsigned int priority;
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unsigned int lex_order;
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OrderGlobalInits(unsigned int p, unsigned int l)
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: priority(p), lex_order(l) {}
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bool operator==(const OrderGlobalInits &RHS) const {
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return priority == RHS.priority &&
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lex_order == RHS.lex_order;
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}
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bool operator<(const OrderGlobalInits &RHS) const {
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if (priority < RHS.priority)
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return true;
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return priority == RHS.priority && lex_order < RHS.lex_order;
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}
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};
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struct CodeGenTypeCache {
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/// void
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llvm::Type *VoidTy;
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/// i8, i16, i32, and i64
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llvm::IntegerType *Int8Ty, *Int16Ty, *Int32Ty, *Int64Ty;
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/// float, double
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llvm::Type *FloatTy, *DoubleTy;
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/// int
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llvm::IntegerType *IntTy;
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/// intptr_t, size_t, and ptrdiff_t, which we assume are the same size.
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union {
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llvm::IntegerType *IntPtrTy;
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llvm::IntegerType *SizeTy;
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llvm::IntegerType *PtrDiffTy;
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};
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/// void* in address space 0
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union {
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llvm::PointerType *VoidPtrTy;
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llvm::PointerType *Int8PtrTy;
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};
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/// void** in address space 0
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union {
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llvm::PointerType *VoidPtrPtrTy;
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llvm::PointerType *Int8PtrPtrTy;
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};
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/// The width of a pointer into the generic address space.
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unsigned char PointerWidthInBits;
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/// The size and alignment of a pointer into the generic address
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/// space.
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union {
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unsigned char PointerAlignInBytes;
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unsigned char PointerSizeInBytes;
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unsigned char SizeSizeInBytes; // sizeof(size_t)
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};
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llvm::CallingConv::ID RuntimeCC;
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llvm::CallingConv::ID getRuntimeCC() const {
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return RuntimeCC;
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}
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};
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struct RREntrypoints {
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RREntrypoints() { memset(this, 0, sizeof(*this)); }
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/// void objc_autoreleasePoolPop(void*);
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llvm::Constant *objc_autoreleasePoolPop;
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/// void *objc_autoreleasePoolPush(void);
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llvm::Constant *objc_autoreleasePoolPush;
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};
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struct ARCEntrypoints {
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ARCEntrypoints() { memset(this, 0, sizeof(*this)); }
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/// id objc_autorelease(id);
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llvm::Constant *objc_autorelease;
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/// id objc_autoreleaseReturnValue(id);
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llvm::Constant *objc_autoreleaseReturnValue;
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/// void objc_copyWeak(id *dest, id *src);
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llvm::Constant *objc_copyWeak;
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/// void objc_destroyWeak(id*);
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llvm::Constant *objc_destroyWeak;
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/// id objc_initWeak(id*, id);
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llvm::Constant *objc_initWeak;
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/// id objc_loadWeak(id*);
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llvm::Constant *objc_loadWeak;
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/// id objc_loadWeakRetained(id*);
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llvm::Constant *objc_loadWeakRetained;
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/// void objc_moveWeak(id *dest, id *src);
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llvm::Constant *objc_moveWeak;
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/// id objc_retain(id);
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llvm::Constant *objc_retain;
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/// id objc_retainAutorelease(id);
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llvm::Constant *objc_retainAutorelease;
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/// id objc_retainAutoreleaseReturnValue(id);
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llvm::Constant *objc_retainAutoreleaseReturnValue;
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/// id objc_retainAutoreleasedReturnValue(id);
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llvm::Constant *objc_retainAutoreleasedReturnValue;
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/// id objc_retainBlock(id);
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llvm::Constant *objc_retainBlock;
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/// void objc_release(id);
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llvm::Constant *objc_release;
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/// id objc_storeStrong(id*, id);
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llvm::Constant *objc_storeStrong;
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/// id objc_storeWeak(id*, id);
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llvm::Constant *objc_storeWeak;
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/// A void(void) inline asm to use to mark that the return value of
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/// a call will be immediately retain.
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llvm::InlineAsm *retainAutoreleasedReturnValueMarker;
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/// void clang.arc.use(...);
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llvm::Constant *clang_arc_use;
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};
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/// CodeGenModule - This class organizes the cross-function state that is used
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/// while generating LLVM code.
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class CodeGenModule : public CodeGenTypeCache {
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CodeGenModule(const CodeGenModule &) LLVM_DELETED_FUNCTION;
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void operator=(const CodeGenModule &) LLVM_DELETED_FUNCTION;
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typedef std::vector<std::pair<llvm::Constant*, int> > CtorList;
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ASTContext &Context;
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const LangOptions &LangOpts;
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const CodeGenOptions &CodeGenOpts;
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llvm::Module &TheModule;
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DiagnosticsEngine &Diags;
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const llvm::DataLayout &TheDataLayout;
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const TargetInfo &Target;
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CGCXXABI &ABI;
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llvm::LLVMContext &VMContext;
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CodeGenTBAA *TBAA;
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mutable const TargetCodeGenInfo *TheTargetCodeGenInfo;
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// This should not be moved earlier, since its initialization depends on some
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// of the previous reference members being already initialized and also checks
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// if TheTargetCodeGenInfo is NULL
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CodeGenTypes Types;
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/// VTables - Holds information about C++ vtables.
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CodeGenVTables VTables;
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CGObjCRuntime* ObjCRuntime;
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CGOpenCLRuntime* OpenCLRuntime;
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CGCUDARuntime* CUDARuntime;
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CGDebugInfo* DebugInfo;
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ARCEntrypoints *ARCData;
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llvm::MDNode *NoObjCARCExceptionsMetadata;
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RREntrypoints *RRData;
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// WeakRefReferences - A set of references that have only been seen via
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// a weakref so far. This is used to remove the weak of the reference if we
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// ever see a direct reference or a definition.
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llvm::SmallPtrSet<llvm::GlobalValue*, 10> WeakRefReferences;
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/// DeferredDecls - This contains all the decls which have definitions but
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/// which are deferred for emission and therefore should only be output if
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/// they are actually used. If a decl is in this, then it is known to have
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/// not been referenced yet.
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llvm::StringMap<GlobalDecl> DeferredDecls;
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/// DeferredDeclsToEmit - This is a list of deferred decls which we have seen
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/// that *are* actually referenced. These get code generated when the module
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/// is done.
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std::vector<GlobalDecl> DeferredDeclsToEmit;
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/// List of alias we have emitted. Used to make sure that what they point to
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/// is defined once we get to the end of the of the translation unit.
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std::vector<GlobalDecl> Aliases;
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typedef llvm::StringMap<llvm::TrackingVH<llvm::Constant> > ReplacementsTy;
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ReplacementsTy Replacements;
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/// DeferredVTables - A queue of (optional) vtables to consider emitting.
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std::vector<const CXXRecordDecl*> DeferredVTables;
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/// LLVMUsed - List of global values which are required to be
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/// present in the object file; bitcast to i8*. This is used for
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/// forcing visibility of symbols which may otherwise be optimized
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/// out.
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std::vector<llvm::WeakVH> LLVMUsed;
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/// GlobalCtors - Store the list of global constructors and their respective
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/// priorities to be emitted when the translation unit is complete.
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CtorList GlobalCtors;
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/// GlobalDtors - Store the list of global destructors and their respective
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/// priorities to be emitted when the translation unit is complete.
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CtorList GlobalDtors;
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/// MangledDeclNames - A map of canonical GlobalDecls to their mangled names.
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llvm::DenseMap<GlobalDecl, StringRef> MangledDeclNames;
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llvm::BumpPtrAllocator MangledNamesAllocator;
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/// Global annotations.
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std::vector<llvm::Constant*> Annotations;
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/// Map used to get unique annotation strings.
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llvm::StringMap<llvm::Constant*> AnnotationStrings;
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llvm::StringMap<llvm::Constant*> CFConstantStringMap;
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llvm::StringMap<llvm::GlobalVariable*> ConstantStringMap;
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llvm::DenseMap<const Decl*, llvm::Constant *> StaticLocalDeclMap;
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llvm::DenseMap<const Decl*, llvm::GlobalVariable*> StaticLocalDeclGuardMap;
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llvm::DenseMap<const Expr*, llvm::Constant *> MaterializedGlobalTemporaryMap;
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llvm::DenseMap<QualType, llvm::Constant *> AtomicSetterHelperFnMap;
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llvm::DenseMap<QualType, llvm::Constant *> AtomicGetterHelperFnMap;
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/// Map used to get unique type descriptor constants for sanitizers.
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llvm::DenseMap<QualType, llvm::Constant *> TypeDescriptorMap;
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/// Map used to track internal linkage functions declared within
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/// extern "C" regions.
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typedef llvm::MapVector<IdentifierInfo *,
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llvm::GlobalValue *> StaticExternCMap;
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StaticExternCMap StaticExternCValues;
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/// \brief thread_local variables defined or used in this TU.
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std::vector<std::pair<const VarDecl *, llvm::GlobalVariable *> >
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CXXThreadLocals;
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/// \brief thread_local variables with initializers that need to run
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/// before any thread_local variable in this TU is odr-used.
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std::vector<llvm::Constant*> CXXThreadLocalInits;
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/// CXXGlobalInits - Global variables with initializers that need to run
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/// before main.
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std::vector<llvm::Constant*> CXXGlobalInits;
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/// When a C++ decl with an initializer is deferred, null is
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/// appended to CXXGlobalInits, and the index of that null is placed
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/// here so that the initializer will be performed in the correct
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/// order.
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llvm::DenseMap<const Decl*, unsigned> DelayedCXXInitPosition;
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typedef std::pair<OrderGlobalInits, llvm::Function*> GlobalInitData;
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struct GlobalInitPriorityCmp {
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bool operator()(const GlobalInitData &LHS,
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const GlobalInitData &RHS) const {
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return LHS.first.priority < RHS.first.priority;
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}
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};
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/// - Global variables with initializers whose order of initialization
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/// is set by init_priority attribute.
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SmallVector<GlobalInitData, 8> PrioritizedCXXGlobalInits;
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/// CXXGlobalDtors - Global destructor functions and arguments that need to
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/// run on termination.
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std::vector<std::pair<llvm::WeakVH,llvm::Constant*> > CXXGlobalDtors;
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/// \brief The complete set of modules that has been imported.
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llvm::SetVector<clang::Module *> ImportedModules;
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/// \brief A vector of metadata strings.
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SmallVector<llvm::Value *, 16> LinkerOptionsMetadata;
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/// @name Cache for Objective-C runtime types
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/// @{
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/// CFConstantStringClassRef - Cached reference to the class for constant
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/// strings. This value has type int * but is actually an Obj-C class pointer.
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llvm::WeakVH CFConstantStringClassRef;
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/// ConstantStringClassRef - Cached reference to the class for constant
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/// strings. This value has type int * but is actually an Obj-C class pointer.
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llvm::WeakVH ConstantStringClassRef;
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/// \brief The LLVM type corresponding to NSConstantString.
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llvm::StructType *NSConstantStringType;
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/// \brief The type used to describe the state of a fast enumeration in
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/// Objective-C's for..in loop.
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QualType ObjCFastEnumerationStateType;
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/// @}
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/// Lazily create the Objective-C runtime
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void createObjCRuntime();
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void createOpenCLRuntime();
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void createCUDARuntime();
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bool isTriviallyRecursive(const FunctionDecl *F);
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bool shouldEmitFunction(GlobalDecl GD);
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/// @name Cache for Blocks Runtime Globals
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/// @{
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llvm::Constant *NSConcreteGlobalBlock;
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llvm::Constant *NSConcreteStackBlock;
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llvm::Constant *BlockObjectAssign;
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llvm::Constant *BlockObjectDispose;
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llvm::Type *BlockDescriptorType;
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llvm::Type *GenericBlockLiteralType;
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struct {
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int GlobalUniqueCount;
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} Block;
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/// void @llvm.lifetime.start(i64 %size, i8* nocapture <ptr>)
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llvm::Constant *LifetimeStartFn;
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/// void @llvm.lifetime.end(i64 %size, i8* nocapture <ptr>)
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llvm::Constant *LifetimeEndFn;
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GlobalDecl initializedGlobalDecl;
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llvm::OwningPtr<llvm::SpecialCaseList> SanitizerBlacklist;
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const SanitizerOptions &SanOpts;
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/// @}
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public:
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CodeGenModule(ASTContext &C, const CodeGenOptions &CodeGenOpts,
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llvm::Module &M, const llvm::DataLayout &TD,
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DiagnosticsEngine &Diags);
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~CodeGenModule();
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/// Release - Finalize LLVM code generation.
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void Release();
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/// getObjCRuntime() - Return a reference to the configured
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/// Objective-C runtime.
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CGObjCRuntime &getObjCRuntime() {
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if (!ObjCRuntime) createObjCRuntime();
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return *ObjCRuntime;
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}
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/// hasObjCRuntime() - Return true iff an Objective-C runtime has
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/// been configured.
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bool hasObjCRuntime() { return !!ObjCRuntime; }
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/// getOpenCLRuntime() - Return a reference to the configured OpenCL runtime.
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CGOpenCLRuntime &getOpenCLRuntime() {
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assert(OpenCLRuntime != 0);
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return *OpenCLRuntime;
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}
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/// getCUDARuntime() - Return a reference to the configured CUDA runtime.
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CGCUDARuntime &getCUDARuntime() {
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assert(CUDARuntime != 0);
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return *CUDARuntime;
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}
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ARCEntrypoints &getARCEntrypoints() const {
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assert(getLangOpts().ObjCAutoRefCount && ARCData != 0);
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return *ARCData;
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}
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RREntrypoints &getRREntrypoints() const {
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assert(RRData != 0);
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return *RRData;
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}
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llvm::Constant *getStaticLocalDeclAddress(const VarDecl *D) {
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return StaticLocalDeclMap[D];
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}
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void setStaticLocalDeclAddress(const VarDecl *D,
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llvm::Constant *C) {
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StaticLocalDeclMap[D] = C;
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}
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llvm::GlobalVariable *getStaticLocalDeclGuardAddress(const VarDecl *D) {
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return StaticLocalDeclGuardMap[D];
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}
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void setStaticLocalDeclGuardAddress(const VarDecl *D,
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llvm::GlobalVariable *C) {
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StaticLocalDeclGuardMap[D] = C;
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}
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llvm::Constant *getAtomicSetterHelperFnMap(QualType Ty) {
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return AtomicSetterHelperFnMap[Ty];
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}
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void setAtomicSetterHelperFnMap(QualType Ty,
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llvm::Constant *Fn) {
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AtomicSetterHelperFnMap[Ty] = Fn;
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}
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llvm::Constant *getAtomicGetterHelperFnMap(QualType Ty) {
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return AtomicGetterHelperFnMap[Ty];
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}
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void setAtomicGetterHelperFnMap(QualType Ty,
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llvm::Constant *Fn) {
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AtomicGetterHelperFnMap[Ty] = Fn;
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}
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llvm::Constant *getTypeDescriptor(QualType Ty) {
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return TypeDescriptorMap[Ty];
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}
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void setTypeDescriptor(QualType Ty, llvm::Constant *C) {
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TypeDescriptorMap[Ty] = C;
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}
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CGDebugInfo *getModuleDebugInfo() { return DebugInfo; }
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llvm::MDNode *getNoObjCARCExceptionsMetadata() {
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if (!NoObjCARCExceptionsMetadata)
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NoObjCARCExceptionsMetadata =
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llvm::MDNode::get(getLLVMContext(),
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SmallVector<llvm::Value*,1>());
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return NoObjCARCExceptionsMetadata;
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}
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ASTContext &getContext() const { return Context; }
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const LangOptions &getLangOpts() const { return LangOpts; }
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const CodeGenOptions &getCodeGenOpts() const { return CodeGenOpts; }
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llvm::Module &getModule() const { return TheModule; }
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DiagnosticsEngine &getDiags() const { return Diags; }
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const llvm::DataLayout &getDataLayout() const { return TheDataLayout; }
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const TargetInfo &getTarget() const { return Target; }
|
|
CGCXXABI &getCXXABI() { return ABI; }
|
|
llvm::LLVMContext &getLLVMContext() { return VMContext; }
|
|
|
|
bool shouldUseTBAA() const { return TBAA != 0; }
|
|
|
|
const TargetCodeGenInfo &getTargetCodeGenInfo();
|
|
|
|
CodeGenTypes &getTypes() { return Types; }
|
|
|
|
CodeGenVTables &getVTables() { return VTables; }
|
|
|
|
ItaniumVTableContext &getItaniumVTableContext() {
|
|
return VTables.getItaniumVTableContext();
|
|
}
|
|
|
|
MicrosoftVTableContext &getMicrosoftVTableContext() {
|
|
return VTables.getMicrosoftVTableContext();
|
|
}
|
|
|
|
llvm::MDNode *getTBAAInfo(QualType QTy);
|
|
llvm::MDNode *getTBAAInfoForVTablePtr();
|
|
llvm::MDNode *getTBAAStructInfo(QualType QTy);
|
|
/// Return the MDNode in the type DAG for the given struct type.
|
|
llvm::MDNode *getTBAAStructTypeInfo(QualType QTy);
|
|
/// Return the path-aware tag for given base type, access node and offset.
|
|
llvm::MDNode *getTBAAStructTagInfo(QualType BaseTy, llvm::MDNode *AccessN,
|
|
uint64_t O);
|
|
|
|
bool isTypeConstant(QualType QTy, bool ExcludeCtorDtor);
|
|
|
|
bool isPaddedAtomicType(QualType type);
|
|
bool isPaddedAtomicType(const AtomicType *type);
|
|
|
|
/// Decorate the instruction with a TBAA tag. For scalar TBAA, the tag
|
|
/// is the same as the type. For struct-path aware TBAA, the tag
|
|
/// is different from the type: base type, access type and offset.
|
|
/// When ConvertTypeToTag is true, we create a tag based on the scalar type.
|
|
void DecorateInstruction(llvm::Instruction *Inst,
|
|
llvm::MDNode *TBAAInfo,
|
|
bool ConvertTypeToTag = true);
|
|
|
|
/// getSize - Emit the given number of characters as a value of type size_t.
|
|
llvm::ConstantInt *getSize(CharUnits numChars);
|
|
|
|
/// setGlobalVisibility - Set the visibility for the given LLVM
|
|
/// GlobalValue.
|
|
void setGlobalVisibility(llvm::GlobalValue *GV, const NamedDecl *D) const;
|
|
|
|
/// setTLSMode - Set the TLS mode for the given LLVM GlobalVariable
|
|
/// for the thread-local variable declaration D.
|
|
void setTLSMode(llvm::GlobalVariable *GV, const VarDecl &D) const;
|
|
|
|
/// TypeVisibilityKind - The kind of global variable that is passed to
|
|
/// setTypeVisibility
|
|
enum TypeVisibilityKind {
|
|
TVK_ForVTT,
|
|
TVK_ForVTable,
|
|
TVK_ForConstructionVTable,
|
|
TVK_ForRTTI,
|
|
TVK_ForRTTIName
|
|
};
|
|
|
|
/// setTypeVisibility - Set the visibility for the given global
|
|
/// value which holds information about a type.
|
|
void setTypeVisibility(llvm::GlobalValue *GV, const CXXRecordDecl *D,
|
|
TypeVisibilityKind TVK) const;
|
|
|
|
static llvm::GlobalValue::VisibilityTypes GetLLVMVisibility(Visibility V) {
|
|
switch (V) {
|
|
case DefaultVisibility: return llvm::GlobalValue::DefaultVisibility;
|
|
case HiddenVisibility: return llvm::GlobalValue::HiddenVisibility;
|
|
case ProtectedVisibility: return llvm::GlobalValue::ProtectedVisibility;
|
|
}
|
|
llvm_unreachable("unknown visibility!");
|
|
}
|
|
|
|
llvm::Constant *GetAddrOfGlobal(GlobalDecl GD) {
|
|
if (isa<CXXConstructorDecl>(GD.getDecl()))
|
|
return GetAddrOfCXXConstructor(cast<CXXConstructorDecl>(GD.getDecl()),
|
|
GD.getCtorType());
|
|
else if (isa<CXXDestructorDecl>(GD.getDecl()))
|
|
return GetAddrOfCXXDestructor(cast<CXXDestructorDecl>(GD.getDecl()),
|
|
GD.getDtorType());
|
|
else if (isa<FunctionDecl>(GD.getDecl()))
|
|
return GetAddrOfFunction(GD);
|
|
else
|
|
return GetAddrOfGlobalVar(cast<VarDecl>(GD.getDecl()));
|
|
}
|
|
|
|
/// CreateOrReplaceCXXRuntimeVariable - Will return a global variable of the
|
|
/// given type. If a variable with a different type already exists then a new
|
|
/// variable with the right type will be created and all uses of the old
|
|
/// variable will be replaced with a bitcast to the new variable.
|
|
llvm::GlobalVariable *
|
|
CreateOrReplaceCXXRuntimeVariable(StringRef Name, llvm::Type *Ty,
|
|
llvm::GlobalValue::LinkageTypes Linkage);
|
|
|
|
/// GetGlobalVarAddressSpace - Return the address space of the underlying
|
|
/// global variable for D, as determined by its declaration. Normally this
|
|
/// is the same as the address space of D's type, but in CUDA, address spaces
|
|
/// are associated with declarations, not types.
|
|
unsigned GetGlobalVarAddressSpace(const VarDecl *D, unsigned AddrSpace);
|
|
|
|
/// GetAddrOfGlobalVar - Return the llvm::Constant for the address of the
|
|
/// given global variable. If Ty is non-null and if the global doesn't exist,
|
|
/// then it will be greated with the specified type instead of whatever the
|
|
/// normal requested type would be.
|
|
llvm::Constant *GetAddrOfGlobalVar(const VarDecl *D,
|
|
llvm::Type *Ty = 0);
|
|
|
|
|
|
/// GetAddrOfFunction - Return the address of the given function. If Ty is
|
|
/// non-null, then this function will use the specified type if it has to
|
|
/// create it.
|
|
llvm::Constant *GetAddrOfFunction(GlobalDecl GD,
|
|
llvm::Type *Ty = 0,
|
|
bool ForVTable = false);
|
|
|
|
/// GetAddrOfRTTIDescriptor - Get the address of the RTTI descriptor
|
|
/// for the given type.
|
|
llvm::Constant *GetAddrOfRTTIDescriptor(QualType Ty, bool ForEH = false);
|
|
|
|
/// GetAddrOfUuidDescriptor - Get the address of a uuid descriptor .
|
|
llvm::Constant *GetAddrOfUuidDescriptor(const CXXUuidofExpr* E);
|
|
|
|
/// GetAddrOfThunk - Get the address of the thunk for the given global decl.
|
|
llvm::Constant *GetAddrOfThunk(GlobalDecl GD, const ThunkInfo &Thunk);
|
|
|
|
/// GetWeakRefReference - Get a reference to the target of VD.
|
|
llvm::Constant *GetWeakRefReference(const ValueDecl *VD);
|
|
|
|
/// GetNonVirtualBaseClassOffset - Returns the offset from a derived class to
|
|
/// a class. Returns null if the offset is 0.
|
|
llvm::Constant *
|
|
GetNonVirtualBaseClassOffset(const CXXRecordDecl *ClassDecl,
|
|
CastExpr::path_const_iterator PathBegin,
|
|
CastExpr::path_const_iterator PathEnd);
|
|
|
|
/// A pair of helper functions for a __block variable.
|
|
class ByrefHelpers : public llvm::FoldingSetNode {
|
|
public:
|
|
llvm::Constant *CopyHelper;
|
|
llvm::Constant *DisposeHelper;
|
|
|
|
/// The alignment of the field. This is important because
|
|
/// different offsets to the field within the byref struct need to
|
|
/// have different helper functions.
|
|
CharUnits Alignment;
|
|
|
|
ByrefHelpers(CharUnits alignment) : Alignment(alignment) {}
|
|
virtual ~ByrefHelpers();
|
|
|
|
void Profile(llvm::FoldingSetNodeID &id) const {
|
|
id.AddInteger(Alignment.getQuantity());
|
|
profileImpl(id);
|
|
}
|
|
virtual void profileImpl(llvm::FoldingSetNodeID &id) const = 0;
|
|
|
|
virtual bool needsCopy() const { return true; }
|
|
virtual void emitCopy(CodeGenFunction &CGF,
|
|
llvm::Value *dest, llvm::Value *src) = 0;
|
|
|
|
virtual bool needsDispose() const { return true; }
|
|
virtual void emitDispose(CodeGenFunction &CGF, llvm::Value *field) = 0;
|
|
};
|
|
|
|
llvm::FoldingSet<ByrefHelpers> ByrefHelpersCache;
|
|
|
|
/// getUniqueBlockCount - Fetches the global unique block count.
|
|
int getUniqueBlockCount() { return ++Block.GlobalUniqueCount; }
|
|
|
|
/// getBlockDescriptorType - Fetches the type of a generic block
|
|
/// descriptor.
|
|
llvm::Type *getBlockDescriptorType();
|
|
|
|
/// getGenericBlockLiteralType - The type of a generic block literal.
|
|
llvm::Type *getGenericBlockLiteralType();
|
|
|
|
/// GetAddrOfGlobalBlock - Gets the address of a block which
|
|
/// requires no captures.
|
|
llvm::Constant *GetAddrOfGlobalBlock(const BlockExpr *BE, const char *);
|
|
|
|
/// GetAddrOfConstantCFString - Return a pointer to a constant CFString object
|
|
/// for the given string.
|
|
llvm::Constant *GetAddrOfConstantCFString(const StringLiteral *Literal);
|
|
|
|
/// GetAddrOfConstantString - Return a pointer to a constant NSString object
|
|
/// for the given string. Or a user defined String object as defined via
|
|
/// -fconstant-string-class=class_name option.
|
|
llvm::Constant *GetAddrOfConstantString(const StringLiteral *Literal);
|
|
|
|
/// GetConstantArrayFromStringLiteral - Return a constant array for the given
|
|
/// string.
|
|
llvm::Constant *GetConstantArrayFromStringLiteral(const StringLiteral *E);
|
|
|
|
/// GetAddrOfConstantStringFromLiteral - Return a pointer to a constant array
|
|
/// for the given string literal.
|
|
llvm::Constant *GetAddrOfConstantStringFromLiteral(const StringLiteral *S);
|
|
|
|
/// GetAddrOfConstantStringFromObjCEncode - Return a pointer to a constant
|
|
/// array for the given ObjCEncodeExpr node.
|
|
llvm::Constant *GetAddrOfConstantStringFromObjCEncode(const ObjCEncodeExpr *);
|
|
|
|
/// GetAddrOfConstantString - Returns a pointer to a character array
|
|
/// containing the literal. This contents are exactly that of the given
|
|
/// string, i.e. it will not be null terminated automatically; see
|
|
/// GetAddrOfConstantCString. Note that whether the result is actually a
|
|
/// pointer to an LLVM constant depends on Feature.WriteableStrings.
|
|
///
|
|
/// The result has pointer to array type.
|
|
///
|
|
/// \param GlobalName If provided, the name to use for the global
|
|
/// (if one is created).
|
|
llvm::Constant *GetAddrOfConstantString(StringRef Str,
|
|
const char *GlobalName=0,
|
|
unsigned Alignment=0);
|
|
|
|
/// GetAddrOfConstantCString - Returns a pointer to a character array
|
|
/// containing the literal and a terminating '\0' character. The result has
|
|
/// pointer to array type.
|
|
///
|
|
/// \param GlobalName If provided, the name to use for the global (if one is
|
|
/// created).
|
|
llvm::Constant *GetAddrOfConstantCString(const std::string &str,
|
|
const char *GlobalName=0,
|
|
unsigned Alignment=0);
|
|
|
|
/// GetAddrOfConstantCompoundLiteral - Returns a pointer to a constant global
|
|
/// variable for the given file-scope compound literal expression.
|
|
llvm::Constant *GetAddrOfConstantCompoundLiteral(const CompoundLiteralExpr*E);
|
|
|
|
/// \brief Returns a pointer to a global variable representing a temporary
|
|
/// with static or thread storage duration.
|
|
llvm::Constant *GetAddrOfGlobalTemporary(const MaterializeTemporaryExpr *E,
|
|
const Expr *Inner);
|
|
|
|
/// \brief Retrieve the record type that describes the state of an
|
|
/// Objective-C fast enumeration loop (for..in).
|
|
QualType getObjCFastEnumerationStateType();
|
|
|
|
/// GetAddrOfCXXConstructor - Return the address of the constructor of the
|
|
/// given type.
|
|
llvm::GlobalValue *GetAddrOfCXXConstructor(const CXXConstructorDecl *ctor,
|
|
CXXCtorType ctorType,
|
|
const CGFunctionInfo *fnInfo = 0);
|
|
|
|
/// GetAddrOfCXXDestructor - Return the address of the constructor of the
|
|
/// given type.
|
|
llvm::GlobalValue *GetAddrOfCXXDestructor(const CXXDestructorDecl *dtor,
|
|
CXXDtorType dtorType,
|
|
const CGFunctionInfo *fnInfo = 0,
|
|
llvm::FunctionType *fnType = 0);
|
|
|
|
/// getBuiltinLibFunction - Given a builtin id for a function like
|
|
/// "__builtin_fabsf", return a Function* for "fabsf".
|
|
llvm::Value *getBuiltinLibFunction(const FunctionDecl *FD,
|
|
unsigned BuiltinID);
|
|
|
|
llvm::Function *getIntrinsic(unsigned IID, ArrayRef<llvm::Type*> Tys = None);
|
|
|
|
/// EmitTopLevelDecl - Emit code for a single top level declaration.
|
|
void EmitTopLevelDecl(Decl *D);
|
|
|
|
/// HandleCXXStaticMemberVarInstantiation - Tell the consumer that this
|
|
// variable has been instantiated.
|
|
void HandleCXXStaticMemberVarInstantiation(VarDecl *VD);
|
|
|
|
/// \brief If the declaration has internal linkage but is inside an
|
|
/// extern "C" linkage specification, prepare to emit an alias for it
|
|
/// to the expected name.
|
|
template<typename SomeDecl>
|
|
void MaybeHandleStaticInExternC(const SomeDecl *D, llvm::GlobalValue *GV);
|
|
|
|
/// AddUsedGlobal - Add a global which should be forced to be
|
|
/// present in the object file; these are emitted to the llvm.used
|
|
/// metadata global.
|
|
void AddUsedGlobal(llvm::GlobalValue *GV);
|
|
|
|
/// AddCXXDtorEntry - Add a destructor and object to add to the C++ global
|
|
/// destructor function.
|
|
void AddCXXDtorEntry(llvm::Constant *DtorFn, llvm::Constant *Object) {
|
|
CXXGlobalDtors.push_back(std::make_pair(DtorFn, Object));
|
|
}
|
|
|
|
/// CreateRuntimeFunction - Create a new runtime function with the specified
|
|
/// type and name.
|
|
llvm::Constant *CreateRuntimeFunction(llvm::FunctionType *Ty,
|
|
StringRef Name,
|
|
llvm::AttributeSet ExtraAttrs =
|
|
llvm::AttributeSet());
|
|
/// CreateRuntimeVariable - Create a new runtime global variable with the
|
|
/// specified type and name.
|
|
llvm::Constant *CreateRuntimeVariable(llvm::Type *Ty,
|
|
StringRef Name);
|
|
|
|
///@name Custom Blocks Runtime Interfaces
|
|
///@{
|
|
|
|
llvm::Constant *getNSConcreteGlobalBlock();
|
|
llvm::Constant *getNSConcreteStackBlock();
|
|
llvm::Constant *getBlockObjectAssign();
|
|
llvm::Constant *getBlockObjectDispose();
|
|
|
|
///@}
|
|
|
|
llvm::Constant *getLLVMLifetimeStartFn();
|
|
llvm::Constant *getLLVMLifetimeEndFn();
|
|
|
|
// UpdateCompleteType - Make sure that this type is translated.
|
|
void UpdateCompletedType(const TagDecl *TD);
|
|
|
|
llvm::Constant *getMemberPointerConstant(const UnaryOperator *e);
|
|
|
|
/// EmitConstantInit - Try to emit the initializer for the given declaration
|
|
/// as a constant; returns 0 if the expression cannot be emitted as a
|
|
/// constant.
|
|
llvm::Constant *EmitConstantInit(const VarDecl &D, CodeGenFunction *CGF = 0);
|
|
|
|
/// EmitConstantExpr - Try to emit the given expression as a
|
|
/// constant; returns 0 if the expression cannot be emitted as a
|
|
/// constant.
|
|
llvm::Constant *EmitConstantExpr(const Expr *E, QualType DestType,
|
|
CodeGenFunction *CGF = 0);
|
|
|
|
/// EmitConstantValue - Emit the given constant value as a constant, in the
|
|
/// type's scalar representation.
|
|
llvm::Constant *EmitConstantValue(const APValue &Value, QualType DestType,
|
|
CodeGenFunction *CGF = 0);
|
|
|
|
/// EmitConstantValueForMemory - Emit the given constant value as a constant,
|
|
/// in the type's memory representation.
|
|
llvm::Constant *EmitConstantValueForMemory(const APValue &Value,
|
|
QualType DestType,
|
|
CodeGenFunction *CGF = 0);
|
|
|
|
/// EmitNullConstant - Return the result of value-initializing the given
|
|
/// type, i.e. a null expression of the given type. This is usually,
|
|
/// but not always, an LLVM null constant.
|
|
llvm::Constant *EmitNullConstant(QualType T);
|
|
|
|
/// EmitNullConstantForBase - Return a null constant appropriate for
|
|
/// zero-initializing a base class with the given type. This is usually,
|
|
/// but not always, an LLVM null constant.
|
|
llvm::Constant *EmitNullConstantForBase(const CXXRecordDecl *Record);
|
|
|
|
/// Error - Emit a general error that something can't be done.
|
|
void Error(SourceLocation loc, StringRef error);
|
|
|
|
/// ErrorUnsupported - Print out an error that codegen doesn't support the
|
|
/// specified stmt yet.
|
|
void ErrorUnsupported(const Stmt *S, const char *Type);
|
|
|
|
/// ErrorUnsupported - Print out an error that codegen doesn't support the
|
|
/// specified decl yet.
|
|
void ErrorUnsupported(const Decl *D, const char *Type);
|
|
|
|
/// SetInternalFunctionAttributes - Set the attributes on the LLVM
|
|
/// function for the given decl and function info. This applies
|
|
/// attributes necessary for handling the ABI as well as user
|
|
/// specified attributes like section.
|
|
void SetInternalFunctionAttributes(const Decl *D, llvm::Function *F,
|
|
const CGFunctionInfo &FI);
|
|
|
|
/// SetLLVMFunctionAttributes - Set the LLVM function attributes
|
|
/// (sext, zext, etc).
|
|
void SetLLVMFunctionAttributes(const Decl *D,
|
|
const CGFunctionInfo &Info,
|
|
llvm::Function *F);
|
|
|
|
/// SetLLVMFunctionAttributesForDefinition - Set the LLVM function attributes
|
|
/// which only apply to a function definintion.
|
|
void SetLLVMFunctionAttributesForDefinition(const Decl *D, llvm::Function *F);
|
|
|
|
/// ReturnTypeUsesSRet - Return true iff the given type uses 'sret' when used
|
|
/// as a return type.
|
|
bool ReturnTypeUsesSRet(const CGFunctionInfo &FI);
|
|
|
|
/// ReturnTypeUsesFPRet - Return true iff the given type uses 'fpret' when
|
|
/// used as a return type.
|
|
bool ReturnTypeUsesFPRet(QualType ResultType);
|
|
|
|
/// ReturnTypeUsesFP2Ret - Return true iff the given type uses 'fp2ret' when
|
|
/// used as a return type.
|
|
bool ReturnTypeUsesFP2Ret(QualType ResultType);
|
|
|
|
/// ConstructAttributeList - Get the LLVM attributes and calling convention to
|
|
/// use for a particular function type.
|
|
///
|
|
/// \param Info - The function type information.
|
|
/// \param TargetDecl - The decl these attributes are being constructed
|
|
/// for. If supplied the attributes applied to this decl may contribute to the
|
|
/// function attributes and calling convention.
|
|
/// \param PAL [out] - On return, the attribute list to use.
|
|
/// \param CallingConv [out] - On return, the LLVM calling convention to use.
|
|
void ConstructAttributeList(const CGFunctionInfo &Info,
|
|
const Decl *TargetDecl,
|
|
AttributeListType &PAL,
|
|
unsigned &CallingConv,
|
|
bool AttrOnCallSite);
|
|
|
|
StringRef getMangledName(GlobalDecl GD);
|
|
void getBlockMangledName(GlobalDecl GD, MangleBuffer &Buffer,
|
|
const BlockDecl *BD);
|
|
|
|
void EmitTentativeDefinition(const VarDecl *D);
|
|
|
|
void EmitVTable(CXXRecordDecl *Class, bool DefinitionRequired);
|
|
|
|
/// EmitFundamentalRTTIDescriptors - Emit the RTTI descriptors for the
|
|
/// builtin types.
|
|
void EmitFundamentalRTTIDescriptors();
|
|
|
|
/// \brief Appends Opts to the "Linker Options" metadata value.
|
|
void AppendLinkerOptions(StringRef Opts);
|
|
|
|
/// \brief Appends a detect mismatch command to the linker options.
|
|
void AddDetectMismatch(StringRef Name, StringRef Value);
|
|
|
|
/// \brief Appends a dependent lib to the "Linker Options" metadata value.
|
|
void AddDependentLib(StringRef Lib);
|
|
|
|
llvm::GlobalVariable::LinkageTypes getFunctionLinkage(GlobalDecl GD);
|
|
|
|
void setFunctionLinkage(GlobalDecl GD, llvm::GlobalValue *V) {
|
|
V->setLinkage(getFunctionLinkage(GD));
|
|
}
|
|
|
|
/// getVTableLinkage - Return the appropriate linkage for the vtable, VTT,
|
|
/// and type information of the given class.
|
|
llvm::GlobalVariable::LinkageTypes getVTableLinkage(const CXXRecordDecl *RD);
|
|
|
|
/// GetTargetTypeStoreSize - Return the store size, in character units, of
|
|
/// the given LLVM type.
|
|
CharUnits GetTargetTypeStoreSize(llvm::Type *Ty) const;
|
|
|
|
/// GetLLVMLinkageVarDefinition - Returns LLVM linkage for a global
|
|
/// variable.
|
|
llvm::GlobalValue::LinkageTypes
|
|
GetLLVMLinkageVarDefinition(const VarDecl *D, bool isConstant);
|
|
|
|
/// Emit all the global annotations.
|
|
void EmitGlobalAnnotations();
|
|
|
|
/// Emit an annotation string.
|
|
llvm::Constant *EmitAnnotationString(StringRef Str);
|
|
|
|
/// Emit the annotation's translation unit.
|
|
llvm::Constant *EmitAnnotationUnit(SourceLocation Loc);
|
|
|
|
/// Emit the annotation line number.
|
|
llvm::Constant *EmitAnnotationLineNo(SourceLocation L);
|
|
|
|
/// EmitAnnotateAttr - Generate the llvm::ConstantStruct which contains the
|
|
/// annotation information for a given GlobalValue. The annotation struct is
|
|
/// {i8 *, i8 *, i8 *, i32}. The first field is a constant expression, the
|
|
/// GlobalValue being annotated. The second field is the constant string
|
|
/// created from the AnnotateAttr's annotation. The third field is a constant
|
|
/// string containing the name of the translation unit. The fourth field is
|
|
/// the line number in the file of the annotated value declaration.
|
|
llvm::Constant *EmitAnnotateAttr(llvm::GlobalValue *GV,
|
|
const AnnotateAttr *AA,
|
|
SourceLocation L);
|
|
|
|
/// Add global annotations that are set on D, for the global GV. Those
|
|
/// annotations are emitted during finalization of the LLVM code.
|
|
void AddGlobalAnnotations(const ValueDecl *D, llvm::GlobalValue *GV);
|
|
|
|
const llvm::SpecialCaseList &getSanitizerBlacklist() const {
|
|
return *SanitizerBlacklist;
|
|
}
|
|
|
|
const SanitizerOptions &getSanOpts() const { return SanOpts; }
|
|
|
|
void addDeferredVTable(const CXXRecordDecl *RD) {
|
|
DeferredVTables.push_back(RD);
|
|
}
|
|
|
|
/// EmitGlobal - Emit code for a singal global function or var decl. Forward
|
|
/// declarations are emitted lazily.
|
|
void EmitGlobal(GlobalDecl D);
|
|
|
|
private:
|
|
llvm::GlobalValue *GetGlobalValue(StringRef Ref);
|
|
|
|
llvm::Constant *GetOrCreateLLVMFunction(StringRef MangledName,
|
|
llvm::Type *Ty,
|
|
GlobalDecl D,
|
|
bool ForVTable,
|
|
llvm::AttributeSet ExtraAttrs =
|
|
llvm::AttributeSet());
|
|
llvm::Constant *GetOrCreateLLVMGlobal(StringRef MangledName,
|
|
llvm::PointerType *PTy,
|
|
const VarDecl *D,
|
|
bool UnnamedAddr = false);
|
|
|
|
/// SetCommonAttributes - Set attributes which are common to any
|
|
/// form of a global definition (alias, Objective-C method,
|
|
/// function, global variable).
|
|
///
|
|
/// NOTE: This should only be called for definitions.
|
|
void SetCommonAttributes(const Decl *D, llvm::GlobalValue *GV);
|
|
|
|
/// SetFunctionDefinitionAttributes - Set attributes for a global definition.
|
|
void SetFunctionDefinitionAttributes(const FunctionDecl *D,
|
|
llvm::GlobalValue *GV);
|
|
|
|
/// SetFunctionAttributes - Set function attributes for a function
|
|
/// declaration.
|
|
void SetFunctionAttributes(GlobalDecl GD,
|
|
llvm::Function *F,
|
|
bool IsIncompleteFunction);
|
|
|
|
void EmitGlobalDefinition(GlobalDecl D);
|
|
|
|
void EmitGlobalFunctionDefinition(GlobalDecl GD);
|
|
void EmitGlobalVarDefinition(const VarDecl *D);
|
|
void EmitAliasDefinition(GlobalDecl GD);
|
|
void EmitObjCPropertyImplementations(const ObjCImplementationDecl *D);
|
|
void EmitObjCIvarInitializations(ObjCImplementationDecl *D);
|
|
|
|
// C++ related functions.
|
|
|
|
bool TryEmitDefinitionAsAlias(GlobalDecl Alias, GlobalDecl Target,
|
|
bool InEveryTU);
|
|
bool TryEmitBaseDestructorAsAlias(const CXXDestructorDecl *D);
|
|
|
|
void EmitNamespace(const NamespaceDecl *D);
|
|
void EmitLinkageSpec(const LinkageSpecDecl *D);
|
|
void CompleteDIClassType(const CXXMethodDecl* D);
|
|
|
|
/// EmitCXXConstructor - Emit a single constructor with the given type from
|
|
/// a C++ constructor Decl.
|
|
void EmitCXXConstructor(const CXXConstructorDecl *D, CXXCtorType Type);
|
|
|
|
/// EmitCXXDestructor - Emit a single destructor with the given type from
|
|
/// a C++ destructor Decl.
|
|
void EmitCXXDestructor(const CXXDestructorDecl *D, CXXDtorType Type);
|
|
|
|
/// \brief Emit the function that initializes C++ thread_local variables.
|
|
void EmitCXXThreadLocalInitFunc();
|
|
|
|
/// EmitCXXGlobalInitFunc - Emit the function that initializes C++ globals.
|
|
void EmitCXXGlobalInitFunc();
|
|
|
|
/// EmitCXXGlobalDtorFunc - Emit the function that destroys C++ globals.
|
|
void EmitCXXGlobalDtorFunc();
|
|
|
|
/// EmitCXXGlobalVarDeclInitFunc - Emit the function that initializes the
|
|
/// specified global (if PerformInit is true) and registers its destructor.
|
|
void EmitCXXGlobalVarDeclInitFunc(const VarDecl *D,
|
|
llvm::GlobalVariable *Addr,
|
|
bool PerformInit);
|
|
|
|
// FIXME: Hardcoding priority here is gross.
|
|
void AddGlobalCtor(llvm::Function *Ctor, int Priority=65535);
|
|
void AddGlobalDtor(llvm::Function *Dtor, int Priority=65535);
|
|
|
|
/// EmitCtorList - Generates a global array of functions and priorities using
|
|
/// the given list and name. This array will have appending linkage and is
|
|
/// suitable for use as a LLVM constructor or destructor array.
|
|
void EmitCtorList(const CtorList &Fns, const char *GlobalName);
|
|
|
|
/// EmitFundamentalRTTIDescriptor - Emit the RTTI descriptors for the
|
|
/// given type.
|
|
void EmitFundamentalRTTIDescriptor(QualType Type);
|
|
|
|
/// EmitDeferred - Emit any needed decls for which code generation
|
|
/// was deferred.
|
|
void EmitDeferred();
|
|
|
|
/// Call replaceAllUsesWith on all pairs in Replacements.
|
|
void applyReplacements();
|
|
|
|
void checkAliases();
|
|
|
|
/// EmitDeferredVTables - Emit any vtables which we deferred and
|
|
/// still have a use for.
|
|
void EmitDeferredVTables();
|
|
|
|
/// EmitLLVMUsed - Emit the llvm.used metadata used to force
|
|
/// references to global which may otherwise be optimized out.
|
|
void EmitLLVMUsed();
|
|
|
|
/// \brief Emit the link options introduced by imported modules.
|
|
void EmitModuleLinkOptions();
|
|
|
|
/// \brief Emit aliases for internal-linkage declarations inside "C" language
|
|
/// linkage specifications, giving them the "expected" name where possible.
|
|
void EmitStaticExternCAliases();
|
|
|
|
void EmitDeclMetadata();
|
|
|
|
/// \brief Emit the Clang version as llvm.ident metadata.
|
|
void EmitVersionIdentMetadata();
|
|
|
|
/// EmitCoverageFile - Emit the llvm.gcov metadata used to tell LLVM where
|
|
/// to emit the .gcno and .gcda files in a way that persists in .bc files.
|
|
void EmitCoverageFile();
|
|
|
|
/// Emits the initializer for a uuidof string.
|
|
llvm::Constant *EmitUuidofInitializer(StringRef uuidstr, QualType IIDType);
|
|
|
|
/// MayDeferGeneration - Determine if the given decl can be emitted
|
|
/// lazily; this is only relevant for definitions. The given decl
|
|
/// must be either a function or var decl.
|
|
bool MayDeferGeneration(const ValueDecl *D);
|
|
|
|
/// SimplifyPersonality - Check whether we can use a "simpler", more
|
|
/// core exceptions personality function.
|
|
void SimplifyPersonality();
|
|
};
|
|
} // end namespace CodeGen
|
|
} // end namespace clang
|
|
|
|
#endif
|