forked from OSchip/llvm-project
1267 lines
47 KiB
C++
1267 lines
47 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 LLVM_CLANG_LIB_CODEGEN_CODEGENMODULE_H
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#define LLVM_CLANG_LIB_CODEGEN_CODEGENMODULE_H
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#include "CGVTables.h"
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#include "CodeGenTypeCache.h"
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#include "CodeGenTypes.h"
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#include "SanitizerMetadata.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 "clang/Basic/SanitizerBlacklist.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/Module.h"
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#include "llvm/IR/ValueHandle.h"
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#include "llvm/Transforms/Utils/SanitizerStats.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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class IndexedInstrProfReader;
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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 HeaderSearchOptions;
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class PreprocessorOptions;
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class DiagnosticsEngine;
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class AnnotateAttr;
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class CXXDestructorDecl;
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class Module;
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class CoverageSourceInfo;
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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 CGOpenMPRuntime;
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class CGCUDARuntime;
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class BlockFieldFlags;
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class FunctionArgList;
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class CoverageMappingModuleGen;
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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 && lex_order == RHS.lex_order;
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}
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bool operator<(const OrderGlobalInits &RHS) const {
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return std::tie(priority, lex_order) <
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std::tie(RHS.priority, RHS.lex_order);
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}
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};
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struct ObjCEntrypoints {
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ObjCEntrypoints() { 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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/// 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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/// id objc_unsafeClaimAutoreleasedReturnValue(id);
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llvm::Constant *objc_unsafeClaimAutoreleasedReturnValue;
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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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/// This class records statistics on instrumentation based profiling.
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class InstrProfStats {
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uint32_t VisitedInMainFile;
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uint32_t MissingInMainFile;
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uint32_t Visited;
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uint32_t Missing;
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uint32_t Mismatched;
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public:
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InstrProfStats()
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: VisitedInMainFile(0), MissingInMainFile(0), Visited(0), Missing(0),
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Mismatched(0) {}
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/// Record that we've visited a function and whether or not that function was
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/// in the main source file.
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void addVisited(bool MainFile) {
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if (MainFile)
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++VisitedInMainFile;
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++Visited;
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}
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/// Record that a function we've visited has no profile data.
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void addMissing(bool MainFile) {
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if (MainFile)
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++MissingInMainFile;
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++Missing;
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}
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/// Record that a function we've visited has mismatched profile data.
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void addMismatched(bool MainFile) { ++Mismatched; }
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/// Whether or not the stats we've gathered indicate any potential problems.
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bool hasDiagnostics() { return Missing || Mismatched; }
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/// Report potential problems we've found to \c Diags.
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void reportDiagnostics(DiagnosticsEngine &Diags, StringRef MainFile);
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};
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/// A pair of helper functions for a __block variable.
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class BlockByrefHelpers : public llvm::FoldingSetNode {
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// MSVC requires this type to be complete in order to process this
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// header.
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public:
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llvm::Constant *CopyHelper;
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llvm::Constant *DisposeHelper;
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/// The alignment of the field. This is important because
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/// different offsets to the field within the byref struct need to
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/// have different helper functions.
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CharUnits Alignment;
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BlockByrefHelpers(CharUnits alignment) : Alignment(alignment) {}
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BlockByrefHelpers(const BlockByrefHelpers &) = default;
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virtual ~BlockByrefHelpers();
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void Profile(llvm::FoldingSetNodeID &id) const {
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id.AddInteger(Alignment.getQuantity());
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profileImpl(id);
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}
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virtual void profileImpl(llvm::FoldingSetNodeID &id) const = 0;
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virtual bool needsCopy() const { return true; }
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virtual void emitCopy(CodeGenFunction &CGF, Address dest, Address src) = 0;
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virtual bool needsDispose() const { return true; }
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virtual void emitDispose(CodeGenFunction &CGF, Address field) = 0;
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};
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/// This class organizes the cross-function state that is used while generating
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/// LLVM code.
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class CodeGenModule : public CodeGenTypeCache {
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CodeGenModule(const CodeGenModule &) = delete;
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void operator=(const CodeGenModule &) = delete;
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public:
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struct Structor {
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Structor() : Priority(0), Initializer(nullptr), AssociatedData(nullptr) {}
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Structor(int Priority, llvm::Constant *Initializer,
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llvm::Constant *AssociatedData)
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: Priority(Priority), Initializer(Initializer),
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AssociatedData(AssociatedData) {}
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int Priority;
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llvm::Constant *Initializer;
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llvm::Constant *AssociatedData;
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};
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typedef std::vector<Structor> CtorList;
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private:
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ASTContext &Context;
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const LangOptions &LangOpts;
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const HeaderSearchOptions &HeaderSearchOpts; // Only used for debug info.
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const PreprocessorOptions &PreprocessorOpts; // Only used for debug info.
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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 TargetInfo &Target;
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std::unique_ptr<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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/// 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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CGOpenMPRuntime* OpenMPRuntime;
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CGCUDARuntime* CUDARuntime;
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CGDebugInfo* DebugInfo;
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ObjCEntrypoints *ObjCData;
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llvm::MDNode *NoObjCARCExceptionsMetadata;
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std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader;
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InstrProfStats PGOStats;
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std::unique_ptr<llvm::SanitizerStatReport> SanStats;
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// A set of references that have only been seen via a weakref so far. This is
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// used to remove the weak of the reference if we ever see a direct reference
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// or a definition.
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llvm::SmallPtrSet<llvm::GlobalValue*, 10> WeakRefReferences;
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/// This contains all the decls which have definitions but/ which are deferred
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/// for emission and therefore should only be output if they are actually
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/// used. If a decl is in this, then it is known to have not been referenced
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/// yet.
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std::map<StringRef, GlobalDecl> DeferredDecls;
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/// This is a list of deferred decls which we have seen that *are* actually
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/// referenced. These get code generated when the module is done.
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struct DeferredGlobal {
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DeferredGlobal(llvm::GlobalValue *GV, GlobalDecl GD) : GV(GV), GD(GD) {}
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llvm::TrackingVH<llvm::GlobalValue> GV;
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GlobalDecl GD;
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};
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std::vector<DeferredGlobal> DeferredDeclsToEmit;
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void addDeferredDeclToEmit(llvm::GlobalValue *GV, GlobalDecl GD) {
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DeferredDeclsToEmit.emplace_back(GV, GD);
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}
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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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/// List of global values to be replaced with something else. Used when we
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/// want to replace a GlobalValue but can't identify it by its mangled name
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/// anymore (because the name is already taken).
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llvm::SmallVector<std::pair<llvm::GlobalValue *, llvm::Constant *>, 8>
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GlobalValReplacements;
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/// Set of global decls for which we already diagnosed mangled name conflict.
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/// Required to not issue a warning (on a mangling conflict) multiple times
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/// for the same decl.
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llvm::DenseSet<GlobalDecl> DiagnosedConflictingDefinitions;
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/// A queue of (optional) vtables to consider emitting.
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std::vector<const CXXRecordDecl*> DeferredVTables;
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/// List of global values which are required to be present in the object file;
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/// bitcast to i8*. This is used for forcing visibility of symbols which may
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/// otherwise be optimized out.
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std::vector<llvm::WeakVH> LLVMUsed;
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std::vector<llvm::WeakVH> LLVMCompilerUsed;
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/// Store the list of global constructors and their respective priorities to
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/// be emitted when the translation unit is complete.
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CtorList GlobalCtors;
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/// Store the list of global destructors and their respective priorities to be
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/// emitted when the translation unit is complete.
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CtorList GlobalDtors;
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/// An ordered map of canonical GlobalDecls to their mangled names.
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llvm::MapVector<GlobalDecl, StringRef> MangledDeclNames;
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llvm::StringMap<GlobalDecl, llvm::BumpPtrAllocator> Manglings;
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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::GlobalVariable *> CFConstantStringMap;
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llvm::DenseMap<llvm::Constant *, 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<const VarDecl *> 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::Function *> CXXThreadLocalInits;
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std::vector<const VarDecl *> CXXThreadLocalInitVars;
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/// Global variables with initializers that need to run before main.
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std::vector<llvm::Function *> 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. Once the decl is emitted, the index is replaced with ~0U to ensure
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/// that we don't re-emit the initializer.
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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 is set by
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/// init_priority attribute.
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SmallVector<GlobalInitData, 8> PrioritizedCXXGlobalInits;
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/// Global destructor functions and arguments that need to 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::Metadata *, 16> LinkerOptionsMetadata;
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/// @name Cache for Objective-C runtime types
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/// @{
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/// Cached reference to the class for constant strings. This value has type
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/// int * but is actually an Obj-C class pointer.
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llvm::WeakVH CFConstantStringClassRef;
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/// Cached reference to the class for constant strings. This value has type
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/// 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 createOpenMPRuntime();
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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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std::unique_ptr<SanitizerMetadata> SanitizerMD;
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/// @}
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llvm::DenseMap<const Decl *, bool> DeferredEmptyCoverageMappingDecls;
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std::unique_ptr<CoverageMappingModuleGen> CoverageMapping;
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/// Mapping from canonical types to their metadata identifiers. We need to
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/// maintain this mapping because identifiers may be formed from distinct
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/// MDNodes.
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llvm::DenseMap<QualType, llvm::Metadata *> MetadataIdMap;
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SanitizerBlacklist WholeProgramVTablesBlacklist;
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public:
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CodeGenModule(ASTContext &C, const HeaderSearchOptions &headersearchopts,
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const PreprocessorOptions &ppopts,
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const CodeGenOptions &CodeGenOpts, llvm::Module &M,
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DiagnosticsEngine &Diags,
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CoverageSourceInfo *CoverageInfo = nullptr);
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~CodeGenModule();
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void clear();
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/// Finalize LLVM code generation.
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void Release();
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/// Return a reference to the configured 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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/// Return true iff an Objective-C runtime has been configured.
|
|
bool hasObjCRuntime() { return !!ObjCRuntime; }
|
|
|
|
/// Return a reference to the configured OpenCL runtime.
|
|
CGOpenCLRuntime &getOpenCLRuntime() {
|
|
assert(OpenCLRuntime != nullptr);
|
|
return *OpenCLRuntime;
|
|
}
|
|
|
|
/// Return a reference to the configured OpenMP runtime.
|
|
CGOpenMPRuntime &getOpenMPRuntime() {
|
|
assert(OpenMPRuntime != nullptr);
|
|
return *OpenMPRuntime;
|
|
}
|
|
|
|
/// Return a reference to the configured CUDA runtime.
|
|
CGCUDARuntime &getCUDARuntime() {
|
|
assert(CUDARuntime != nullptr);
|
|
return *CUDARuntime;
|
|
}
|
|
|
|
ObjCEntrypoints &getObjCEntrypoints() const {
|
|
assert(ObjCData != nullptr);
|
|
return *ObjCData;
|
|
}
|
|
|
|
InstrProfStats &getPGOStats() { return PGOStats; }
|
|
llvm::IndexedInstrProfReader *getPGOReader() const { return PGOReader.get(); }
|
|
|
|
CoverageMappingModuleGen *getCoverageMapping() const {
|
|
return CoverageMapping.get();
|
|
}
|
|
|
|
llvm::Constant *getStaticLocalDeclAddress(const VarDecl *D) {
|
|
return StaticLocalDeclMap[D];
|
|
}
|
|
void setStaticLocalDeclAddress(const VarDecl *D,
|
|
llvm::Constant *C) {
|
|
StaticLocalDeclMap[D] = C;
|
|
}
|
|
|
|
llvm::Constant *
|
|
getOrCreateStaticVarDecl(const VarDecl &D,
|
|
llvm::GlobalValue::LinkageTypes Linkage);
|
|
|
|
llvm::GlobalVariable *getStaticLocalDeclGuardAddress(const VarDecl *D) {
|
|
return StaticLocalDeclGuardMap[D];
|
|
}
|
|
void setStaticLocalDeclGuardAddress(const VarDecl *D,
|
|
llvm::GlobalVariable *C) {
|
|
StaticLocalDeclGuardMap[D] = C;
|
|
}
|
|
|
|
bool lookupRepresentativeDecl(StringRef MangledName,
|
|
GlobalDecl &Result) const;
|
|
|
|
llvm::Constant *getAtomicSetterHelperFnMap(QualType Ty) {
|
|
return AtomicSetterHelperFnMap[Ty];
|
|
}
|
|
void setAtomicSetterHelperFnMap(QualType Ty,
|
|
llvm::Constant *Fn) {
|
|
AtomicSetterHelperFnMap[Ty] = Fn;
|
|
}
|
|
|
|
llvm::Constant *getAtomicGetterHelperFnMap(QualType Ty) {
|
|
return AtomicGetterHelperFnMap[Ty];
|
|
}
|
|
void setAtomicGetterHelperFnMap(QualType Ty,
|
|
llvm::Constant *Fn) {
|
|
AtomicGetterHelperFnMap[Ty] = Fn;
|
|
}
|
|
|
|
llvm::Constant *getTypeDescriptorFromMap(QualType Ty) {
|
|
return TypeDescriptorMap[Ty];
|
|
}
|
|
void setTypeDescriptorInMap(QualType Ty, llvm::Constant *C) {
|
|
TypeDescriptorMap[Ty] = C;
|
|
}
|
|
|
|
CGDebugInfo *getModuleDebugInfo() { return DebugInfo; }
|
|
|
|
llvm::MDNode *getNoObjCARCExceptionsMetadata() {
|
|
if (!NoObjCARCExceptionsMetadata)
|
|
NoObjCARCExceptionsMetadata = llvm::MDNode::get(getLLVMContext(), None);
|
|
return NoObjCARCExceptionsMetadata;
|
|
}
|
|
|
|
ASTContext &getContext() const { return Context; }
|
|
const LangOptions &getLangOpts() const { return LangOpts; }
|
|
const HeaderSearchOptions &getHeaderSearchOpts()
|
|
const { return HeaderSearchOpts; }
|
|
const PreprocessorOptions &getPreprocessorOpts()
|
|
const { return PreprocessorOpts; }
|
|
const CodeGenOptions &getCodeGenOpts() const { return CodeGenOpts; }
|
|
llvm::Module &getModule() const { return TheModule; }
|
|
DiagnosticsEngine &getDiags() const { return Diags; }
|
|
const llvm::DataLayout &getDataLayout() const {
|
|
return TheModule.getDataLayout();
|
|
}
|
|
const TargetInfo &getTarget() const { return Target; }
|
|
const llvm::Triple &getTriple() const;
|
|
bool supportsCOMDAT() const;
|
|
void maybeSetTrivialComdat(const Decl &D, llvm::GlobalObject &GO);
|
|
|
|
CGCXXABI &getCXXABI() const { return *ABI; }
|
|
llvm::LLVMContext &getLLVMContext() { return VMContext; }
|
|
|
|
bool shouldUseTBAA() const { return TBAA != nullptr; }
|
|
|
|
const TargetCodeGenInfo &getTargetCodeGenInfo();
|
|
|
|
CodeGenTypes &getTypes() { return Types; }
|
|
|
|
CodeGenVTables &getVTables() { return VTables; }
|
|
|
|
ItaniumVTableContext &getItaniumVTableContext() {
|
|
return VTables.getItaniumVTableContext();
|
|
}
|
|
|
|
MicrosoftVTableContext &getMicrosoftVTableContext() {
|
|
return VTables.getMicrosoftVTableContext();
|
|
}
|
|
|
|
CtorList &getGlobalCtors() { return GlobalCtors; }
|
|
CtorList &getGlobalDtors() { return GlobalDtors; }
|
|
|
|
llvm::MDNode *getTBAAInfo(QualType QTy);
|
|
llvm::MDNode *getTBAAInfoForVTablePtr();
|
|
llvm::MDNode *getTBAAStructInfo(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 DecorateInstructionWithTBAA(llvm::Instruction *Inst,
|
|
llvm::MDNode *TBAAInfo,
|
|
bool ConvertTypeToTag = true);
|
|
|
|
/// Adds !invariant.barrier !tag to instruction
|
|
void DecorateInstructionWithInvariantGroup(llvm::Instruction *I,
|
|
const CXXRecordDecl *RD);
|
|
|
|
/// Emit the given number of characters as a value of type size_t.
|
|
llvm::ConstantInt *getSize(CharUnits numChars);
|
|
|
|
/// Set the visibility for the given LLVM GlobalValue.
|
|
void setGlobalVisibility(llvm::GlobalValue *GV, const NamedDecl *D) const;
|
|
|
|
/// Set the TLS mode for the given LLVM GlobalValue for the thread-local
|
|
/// variable declaration D.
|
|
void setTLSMode(llvm::GlobalValue *GV, const VarDecl &D) 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, bool IsForDefinition = false);
|
|
|
|
/// 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);
|
|
|
|
llvm::Function *
|
|
CreateGlobalInitOrDestructFunction(llvm::FunctionType *ty, const Twine &name,
|
|
const CGFunctionInfo &FI,
|
|
SourceLocation Loc = SourceLocation(),
|
|
bool TLS = false);
|
|
|
|
/// 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);
|
|
|
|
/// 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 created
|
|
/// with the specified type instead of whatever the normal requested type
|
|
/// would be. If IsForDefinition is true, it is guranteed that an actual
|
|
/// global with type Ty will be returned, not conversion of a variable with
|
|
/// the same mangled name but some other type.
|
|
llvm::Constant *GetAddrOfGlobalVar(const VarDecl *D,
|
|
llvm::Type *Ty = nullptr,
|
|
bool IsForDefinition = false);
|
|
|
|
/// 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 = nullptr,
|
|
bool ForVTable = false,
|
|
bool DontDefer = false,
|
|
bool IsForDefinition = false);
|
|
|
|
/// Get the address of the RTTI descriptor for the given type.
|
|
llvm::Constant *GetAddrOfRTTIDescriptor(QualType Ty, bool ForEH = false);
|
|
|
|
/// Get the address of a uuid descriptor .
|
|
ConstantAddress GetAddrOfUuidDescriptor(const CXXUuidofExpr* E);
|
|
|
|
/// Get the address of the thunk for the given global decl.
|
|
llvm::Constant *GetAddrOfThunk(GlobalDecl GD, const ThunkInfo &Thunk);
|
|
|
|
/// Get a reference to the target of VD.
|
|
ConstantAddress GetWeakRefReference(const ValueDecl *VD);
|
|
|
|
/// Returns the assumed alignment of an opaque pointer to the given class.
|
|
CharUnits getClassPointerAlignment(const CXXRecordDecl *CD);
|
|
|
|
/// Returns the assumed alignment of a virtual base of a class.
|
|
CharUnits getVBaseAlignment(CharUnits DerivedAlign,
|
|
const CXXRecordDecl *Derived,
|
|
const CXXRecordDecl *VBase);
|
|
|
|
/// Given a class pointer with an actual known alignment, and the
|
|
/// expected alignment of an object at a dynamic offset w.r.t that
|
|
/// pointer, return the alignment to assume at the offset.
|
|
CharUnits getDynamicOffsetAlignment(CharUnits ActualAlign,
|
|
const CXXRecordDecl *Class,
|
|
CharUnits ExpectedTargetAlign);
|
|
|
|
CharUnits
|
|
computeNonVirtualBaseClassOffset(const CXXRecordDecl *DerivedClass,
|
|
CastExpr::path_const_iterator Start,
|
|
CastExpr::path_const_iterator End);
|
|
|
|
/// 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);
|
|
|
|
llvm::FoldingSet<BlockByrefHelpers> ByrefHelpersCache;
|
|
|
|
/// Fetches the global unique block count.
|
|
int getUniqueBlockCount() { return ++Block.GlobalUniqueCount; }
|
|
|
|
/// Fetches the type of a generic block descriptor.
|
|
llvm::Type *getBlockDescriptorType();
|
|
|
|
/// The type of a generic block literal.
|
|
llvm::Type *getGenericBlockLiteralType();
|
|
|
|
/// Gets the address of a block which requires no captures.
|
|
llvm::Constant *GetAddrOfGlobalBlock(const BlockExpr *BE, const char *);
|
|
|
|
/// Return a pointer to a constant CFString object for the given string.
|
|
ConstantAddress GetAddrOfConstantCFString(const StringLiteral *Literal);
|
|
|
|
/// 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.
|
|
ConstantAddress GetAddrOfConstantString(const StringLiteral *Literal);
|
|
|
|
/// Return a constant array for the given string.
|
|
llvm::Constant *GetConstantArrayFromStringLiteral(const StringLiteral *E);
|
|
|
|
/// Return a pointer to a constant array for the given string literal.
|
|
ConstantAddress
|
|
GetAddrOfConstantStringFromLiteral(const StringLiteral *S,
|
|
StringRef Name = ".str");
|
|
|
|
/// Return a pointer to a constant array for the given ObjCEncodeExpr node.
|
|
ConstantAddress
|
|
GetAddrOfConstantStringFromObjCEncode(const ObjCEncodeExpr *);
|
|
|
|
/// 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).
|
|
ConstantAddress
|
|
GetAddrOfConstantCString(const std::string &Str,
|
|
const char *GlobalName = nullptr);
|
|
|
|
/// Returns a pointer to a constant global variable for the given file-scope
|
|
/// compound literal expression.
|
|
ConstantAddress GetAddrOfConstantCompoundLiteral(const CompoundLiteralExpr*E);
|
|
|
|
/// \brief Returns a pointer to a global variable representing a temporary
|
|
/// with static or thread storage duration.
|
|
ConstantAddress 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();
|
|
|
|
// Produce code for this constructor/destructor. This method doesn't try
|
|
// to apply any ABI rules about which other constructors/destructors
|
|
// are needed or if they are alias to each other.
|
|
llvm::Function *codegenCXXStructor(const CXXMethodDecl *MD,
|
|
StructorType Type);
|
|
|
|
/// Return the address of the constructor/destructor of the given type.
|
|
llvm::Constant *
|
|
getAddrOfCXXStructor(const CXXMethodDecl *MD, StructorType Type,
|
|
const CGFunctionInfo *FnInfo = nullptr,
|
|
llvm::FunctionType *FnType = nullptr,
|
|
bool DontDefer = false, bool IsForDefinition = false);
|
|
|
|
/// 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);
|
|
|
|
/// Emit code for a single top level declaration.
|
|
void EmitTopLevelDecl(Decl *D);
|
|
|
|
/// \brief Stored a deferred empty coverage mapping for an unused
|
|
/// and thus uninstrumented top level declaration.
|
|
void AddDeferredUnusedCoverageMapping(Decl *D);
|
|
|
|
/// \brief Remove the deferred empty coverage mapping as this
|
|
/// declaration is actually instrumented.
|
|
void ClearUnusedCoverageMapping(const Decl *D);
|
|
|
|
/// \brief Emit all the deferred coverage mappings
|
|
/// for the uninstrumented functions.
|
|
void EmitDeferredUnusedCoverageMappings();
|
|
|
|
/// 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);
|
|
|
|
/// Add a global to a list to be added to the llvm.used metadata.
|
|
void addUsedGlobal(llvm::GlobalValue *GV);
|
|
|
|
/// Add a global to a list to be added to the llvm.compiler.used metadata.
|
|
void addCompilerUsedGlobal(llvm::GlobalValue *GV);
|
|
|
|
/// Add a destructor and object to add to the C++ global destructor function.
|
|
void AddCXXDtorEntry(llvm::Constant *DtorFn, llvm::Constant *Object) {
|
|
CXXGlobalDtors.emplace_back(DtorFn, Object);
|
|
}
|
|
|
|
/// Create a new runtime function with the specified type and name.
|
|
llvm::Constant *CreateRuntimeFunction(llvm::FunctionType *Ty,
|
|
StringRef Name,
|
|
llvm::AttributeSet ExtraAttrs =
|
|
llvm::AttributeSet());
|
|
/// Create a new compiler builtin function with the specified type and name.
|
|
llvm::Constant *CreateBuiltinFunction(llvm::FunctionType *Ty,
|
|
StringRef Name,
|
|
llvm::AttributeSet ExtraAttrs =
|
|
llvm::AttributeSet());
|
|
/// 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();
|
|
|
|
// Make sure that this type is translated.
|
|
void UpdateCompletedType(const TagDecl *TD);
|
|
|
|
llvm::Constant *getMemberPointerConstant(const UnaryOperator *e);
|
|
|
|
/// 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 = nullptr);
|
|
|
|
/// 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 = nullptr);
|
|
|
|
/// Emit the given constant value as a constant, in the type's scalar
|
|
/// representation.
|
|
llvm::Constant *EmitConstantValue(const APValue &Value, QualType DestType,
|
|
CodeGenFunction *CGF = nullptr);
|
|
|
|
/// Emit the given constant value as a constant, in the type's memory
|
|
/// representation.
|
|
llvm::Constant *EmitConstantValueForMemory(const APValue &Value,
|
|
QualType DestType,
|
|
CodeGenFunction *CGF = nullptr);
|
|
|
|
/// \brief Emit type info if type of an expression is a variably modified
|
|
/// type. Also emit proper debug info for cast types.
|
|
void EmitExplicitCastExprType(const ExplicitCastExpr *E,
|
|
CodeGenFunction *CGF = nullptr);
|
|
|
|
/// 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);
|
|
|
|
/// 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);
|
|
|
|
/// Emit a general error that something can't be done.
|
|
void Error(SourceLocation loc, StringRef error);
|
|
|
|
/// Print out an error that codegen doesn't support the specified stmt yet.
|
|
void ErrorUnsupported(const Stmt *S, const char *Type);
|
|
|
|
/// Print out an error that codegen doesn't support the specified decl yet.
|
|
void ErrorUnsupported(const Decl *D, const char *Type);
|
|
|
|
/// 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);
|
|
|
|
/// Set the LLVM function attributes (sext, zext, etc).
|
|
void SetLLVMFunctionAttributes(const Decl *D,
|
|
const CGFunctionInfo &Info,
|
|
llvm::Function *F);
|
|
|
|
/// Set the LLVM function attributes which only apply to a function
|
|
/// definition.
|
|
void SetLLVMFunctionAttributesForDefinition(const Decl *D, llvm::Function *F);
|
|
|
|
/// Return true iff the given type uses 'sret' when used as a return type.
|
|
bool ReturnTypeUsesSRet(const CGFunctionInfo &FI);
|
|
|
|
/// Return true iff the given type uses an argument slot when 'sret' is used
|
|
/// as a return type.
|
|
bool ReturnSlotInterferesWithArgs(const CGFunctionInfo &FI);
|
|
|
|
/// Return true iff the given type uses 'fpret' when used as a return type.
|
|
bool ReturnTypeUsesFPRet(QualType ResultType);
|
|
|
|
/// Return true iff the given type uses 'fp2ret' when used as a return type.
|
|
bool ReturnTypeUsesFP2Ret(QualType ResultType);
|
|
|
|
/// Get the LLVM attributes and calling convention to use for a particular
|
|
/// function type.
|
|
///
|
|
/// \param Name - The function name.
|
|
/// \param Info - The function type information.
|
|
/// \param CalleeInfo - The callee information these attributes are being
|
|
/// constructed for. If valid, 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(StringRef Name, const CGFunctionInfo &Info,
|
|
CGCalleeInfo CalleeInfo, AttributeListType &PAL,
|
|
unsigned &CallingConv, bool AttrOnCallSite);
|
|
|
|
// Fills in the supplied string map with the set of target features for the
|
|
// passed in function.
|
|
void getFunctionFeatureMap(llvm::StringMap<bool> &FeatureMap,
|
|
const FunctionDecl *FD);
|
|
|
|
StringRef getMangledName(GlobalDecl GD);
|
|
StringRef getBlockMangledName(GlobalDecl GD, const BlockDecl *BD);
|
|
|
|
void EmitTentativeDefinition(const VarDecl *D);
|
|
|
|
void EmitVTable(CXXRecordDecl *Class);
|
|
|
|
void RefreshTypeCacheForClass(const CXXRecordDecl *Class);
|
|
|
|
/// \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::Function *F) {
|
|
F->setLinkage(getFunctionLinkage(GD));
|
|
}
|
|
|
|
/// Set the DLL storage class on F.
|
|
void setFunctionDLLStorageClass(GlobalDecl GD, llvm::Function *F);
|
|
|
|
/// Return the appropriate linkage for the vtable, VTT, and type information
|
|
/// of the given class.
|
|
llvm::GlobalVariable::LinkageTypes getVTableLinkage(const CXXRecordDecl *RD);
|
|
|
|
/// Return the store size, in character units, of the given LLVM type.
|
|
CharUnits GetTargetTypeStoreSize(llvm::Type *Ty) const;
|
|
|
|
/// Returns LLVM linkage for a declarator.
|
|
llvm::GlobalValue::LinkageTypes
|
|
getLLVMLinkageForDeclarator(const DeclaratorDecl *D, GVALinkage Linkage,
|
|
bool IsConstantVariable);
|
|
|
|
/// Returns LLVM linkage for a declarator.
|
|
llvm::GlobalValue::LinkageTypes
|
|
getLLVMLinkageVarDefinition(const VarDecl *VD, 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);
|
|
|
|
/// 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);
|
|
|
|
bool isInSanitizerBlacklist(llvm::Function *Fn, SourceLocation Loc) const;
|
|
|
|
bool isInSanitizerBlacklist(llvm::GlobalVariable *GV, SourceLocation Loc,
|
|
QualType Ty,
|
|
StringRef Category = StringRef()) const;
|
|
|
|
SanitizerMetadata *getSanitizerMetadata() {
|
|
return SanitizerMD.get();
|
|
}
|
|
|
|
void addDeferredVTable(const CXXRecordDecl *RD) {
|
|
DeferredVTables.push_back(RD);
|
|
}
|
|
|
|
/// Emit code for a singal global function or var decl. Forward declarations
|
|
/// are emitted lazily.
|
|
void EmitGlobal(GlobalDecl D);
|
|
|
|
bool TryEmitDefinitionAsAlias(GlobalDecl Alias, GlobalDecl Target,
|
|
bool InEveryTU);
|
|
bool TryEmitBaseDestructorAsAlias(const CXXDestructorDecl *D);
|
|
|
|
/// Set attributes for a global definition.
|
|
void setFunctionDefinitionAttributes(const FunctionDecl *D,
|
|
llvm::Function *F);
|
|
|
|
llvm::GlobalValue *GetGlobalValue(StringRef Ref);
|
|
|
|
/// 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);
|
|
|
|
/// Set attributes which must be preserved by an alias. This includes common
|
|
/// attributes (i.e. it includes a call to SetCommonAttributes).
|
|
///
|
|
/// NOTE: This should only be called for definitions.
|
|
void setAliasAttributes(const Decl *D, llvm::GlobalValue *GV);
|
|
|
|
void addReplacement(StringRef Name, llvm::Constant *C);
|
|
|
|
void addGlobalValReplacement(llvm::GlobalValue *GV, llvm::Constant *C);
|
|
|
|
/// \brief Emit a code for threadprivate directive.
|
|
/// \param D Threadprivate declaration.
|
|
void EmitOMPThreadPrivateDecl(const OMPThreadPrivateDecl *D);
|
|
|
|
/// Returns whether we need bit sets attached to vtables.
|
|
bool NeedVTableBitSets();
|
|
|
|
/// Returns whether the given record is blacklisted from whole-program
|
|
/// transformations (i.e. CFI or whole-program vtable optimization).
|
|
bool IsBitSetBlacklistedRecord(const CXXRecordDecl *RD);
|
|
|
|
/// Emit bit set entries for the given vtable using the given layout if
|
|
/// vptr CFI is enabled.
|
|
void EmitVTableBitSetEntries(llvm::GlobalVariable *VTable,
|
|
const VTableLayout &VTLayout);
|
|
|
|
/// Generate a cross-DSO type identifier for type.
|
|
llvm::ConstantInt *CreateCfiIdForTypeMetadata(llvm::Metadata *MD);
|
|
|
|
/// Create a metadata identifier for the given type. This may either be an
|
|
/// MDString (for external identifiers) or a distinct unnamed MDNode (for
|
|
/// internal identifiers).
|
|
llvm::Metadata *CreateMetadataIdentifierForType(QualType T);
|
|
|
|
/// Create a bitset entry for the given function and add it to BitsetsMD.
|
|
void CreateFunctionBitSetEntry(const FunctionDecl *FD, llvm::Function *F);
|
|
|
|
/// Returns whether this module needs the "all-vtables" bitset.
|
|
bool NeedAllVtablesBitSet() const;
|
|
|
|
/// Create a bitset entry for the given vtable and add it to BitsetsMD.
|
|
void CreateVTableBitSetEntry(llvm::NamedMDNode *BitsetsMD,
|
|
llvm::GlobalVariable *VTable, CharUnits Offset,
|
|
const CXXRecordDecl *RD);
|
|
|
|
/// \breif Get the declaration of std::terminate for the platform.
|
|
llvm::Constant *getTerminateFn();
|
|
|
|
llvm::SanitizerStatReport &getSanStats();
|
|
|
|
private:
|
|
llvm::Constant *
|
|
GetOrCreateLLVMFunction(StringRef MangledName, llvm::Type *Ty, GlobalDecl D,
|
|
bool ForVTable, bool DontDefer = false,
|
|
bool IsThunk = false,
|
|
llvm::AttributeSet ExtraAttrs = llvm::AttributeSet(),
|
|
bool IsForDefinition = false);
|
|
|
|
llvm::Constant *GetOrCreateLLVMGlobal(StringRef MangledName,
|
|
llvm::PointerType *PTy,
|
|
const VarDecl *D,
|
|
bool IsForDefinition = false);
|
|
|
|
void setNonAliasAttributes(const Decl *D, llvm::GlobalObject *GO);
|
|
|
|
/// Set function attributes for a function declaration.
|
|
void SetFunctionAttributes(GlobalDecl GD, llvm::Function *F,
|
|
bool IsIncompleteFunction, bool IsThunk);
|
|
|
|
void EmitGlobalDefinition(GlobalDecl D, llvm::GlobalValue *GV = nullptr);
|
|
|
|
void EmitGlobalFunctionDefinition(GlobalDecl GD, llvm::GlobalValue *GV);
|
|
void EmitGlobalVarDefinition(const VarDecl *D, bool IsTentative = false);
|
|
void EmitAliasDefinition(GlobalDecl GD);
|
|
void EmitObjCPropertyImplementations(const ObjCImplementationDecl *D);
|
|
void EmitObjCIvarInitializations(ObjCImplementationDecl *D);
|
|
|
|
// C++ related functions.
|
|
|
|
void EmitNamespace(const NamespaceDecl *D);
|
|
void EmitLinkageSpec(const LinkageSpecDecl *D);
|
|
void CompleteDIClassType(const CXXMethodDecl* D);
|
|
|
|
/// \brief Emit the function that initializes C++ thread_local variables.
|
|
void EmitCXXThreadLocalInitFunc();
|
|
|
|
/// Emit the function that initializes C++ globals.
|
|
void EmitCXXGlobalInitFunc();
|
|
|
|
/// Emit the function that destroys C++ globals.
|
|
void EmitCXXGlobalDtorFunc();
|
|
|
|
/// 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);
|
|
|
|
void EmitPointerToInitFunc(const VarDecl *VD, llvm::GlobalVariable *Addr,
|
|
llvm::Function *InitFunc, InitSegAttr *ISA);
|
|
|
|
// FIXME: Hardcoding priority here is gross.
|
|
void AddGlobalCtor(llvm::Function *Ctor, int Priority = 65535,
|
|
llvm::Constant *AssociatedData = nullptr);
|
|
void AddGlobalDtor(llvm::Function *Dtor, int Priority = 65535);
|
|
|
|
/// 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);
|
|
|
|
/// Emit any needed decls for which code generation was deferred.
|
|
void EmitDeferred();
|
|
|
|
/// Call replaceAllUsesWith on all pairs in Replacements.
|
|
void applyReplacements();
|
|
|
|
/// Call replaceAllUsesWith on all pairs in GlobalValReplacements.
|
|
void applyGlobalValReplacements();
|
|
|
|
void checkAliases();
|
|
|
|
/// Emit any vtables which we deferred and still have a use for.
|
|
void EmitDeferredVTables();
|
|
|
|
/// Emit the llvm.used and llvm.compiler.used metadata.
|
|
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();
|
|
|
|
/// Emits target specific Metadata for global declarations.
|
|
void EmitTargetMetadata();
|
|
|
|
/// 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);
|
|
|
|
/// Determine whether the definition must be emitted; if this returns \c
|
|
/// false, the definition can be emitted lazily if it's used.
|
|
bool MustBeEmitted(const ValueDecl *D);
|
|
|
|
/// Determine whether the definition can be emitted eagerly, or should be
|
|
/// delayed until the end of the translation unit. This is relevant for
|
|
/// definitions whose linkage can change, e.g. implicit function instantions
|
|
/// which may later be explicitly instantiated.
|
|
bool MayBeEmittedEagerly(const ValueDecl *D);
|
|
|
|
/// Check whether we can use a "simpler", more core exceptions personality
|
|
/// function.
|
|
void SimplifyPersonality();
|
|
};
|
|
} // end namespace CodeGen
|
|
} // end namespace clang
|
|
|
|
#endif // LLVM_CLANG_LIB_CODEGEN_CODEGENMODULE_H
|