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llvm-mirror/include/llvm/IR/DIBuilder.h
Peter Collingbourne a9fbb2813b DebugInfo: New metadata representation for global variables. 
This patch reverses the edge from DIGlobalVariable to GlobalVariable.
This will allow us to more easily preserve debug info metadata when
manipulating global variables.

Fixes PR30362. A program for upgrading test cases is attached to that
bug.

Differential Revision: http://reviews.llvm.org/D20147

llvm-svn: 281284
2016-09-13 01:12:59 +00:00

742 lines
36 KiB
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//===- DIBuilder.h - Debug Information Builder ------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines a DIBuilder that is useful for creating debugging
// information entries in LLVM IR form.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_IR_DIBUILDER_H
#define LLVM_IR_DIBUILDER_H
#include "llvm/IR/DebugInfo.h"
#include "llvm/IR/TrackingMDRef.h"
#include "llvm/IR/ValueHandle.h"
#include "llvm/Support/DataTypes.h"
namespace llvm {
class BasicBlock;
class Instruction;
class Function;
class Module;
class Value;
class Constant;
class LLVMContext;
class StringRef;
template <typename T> class ArrayRef;
class DIBuilder {
Module &M;
LLVMContext &VMContext;
DICompileUnit *CUNode; ///< The one compile unit created by this DIBuiler.
Function *DeclareFn; ///< llvm.dbg.declare
Function *ValueFn; ///< llvm.dbg.value
SmallVector<Metadata *, 4> AllEnumTypes;
/// Track the RetainTypes, since they can be updated later on.
SmallVector<TrackingMDNodeRef, 4> AllRetainTypes;
SmallVector<Metadata *, 4> AllSubprograms;
SmallVector<Metadata *, 4> AllGVs;
SmallVector<TrackingMDNodeRef, 4> AllImportedModules;
/// Track nodes that may be unresolved.
SmallVector<TrackingMDNodeRef, 4> UnresolvedNodes;
bool AllowUnresolvedNodes;
/// Each subprogram's preserved local variables.
///
/// Do not use a std::vector. Some versions of libc++ apparently copy
/// instead of move on grow operations, and TrackingMDRef is expensive to
/// copy.
DenseMap<MDNode *, SmallVector<TrackingMDNodeRef, 1>> PreservedVariables;
DIBuilder(const DIBuilder &) = delete;
void operator=(const DIBuilder &) = delete;
/// Create a temporary.
///
/// Create an \a temporary node and track it in \a UnresolvedNodes.
void trackIfUnresolved(MDNode *N);
public:
/// Construct a builder for a module.
///
/// If \c AllowUnresolved, collect unresolved nodes attached to the module
/// in order to resolve cycles during \a finalize().
explicit DIBuilder(Module &M, bool AllowUnresolved = true);
/// Construct any deferred debug info descriptors.
void finalize();
/// A CompileUnit provides an anchor for all debugging
/// information generated during this instance of compilation.
/// \param Lang Source programming language, eg. dwarf::DW_LANG_C99
/// \param File File name
/// \param Dir Directory
/// \param Producer Identify the producer of debugging information
/// and code. Usually this is a compiler
/// version string.
/// \param isOptimized A boolean flag which indicates whether optimization
/// is enabled or not.
/// \param Flags This string lists command line options. This
/// string is directly embedded in debug info
/// output which may be used by a tool
/// analyzing generated debugging information.
/// \param RV This indicates runtime version for languages like
/// Objective-C.
/// \param SplitName The name of the file that we'll split debug info
/// out into.
/// \param Kind The kind of debug information to generate.
/// \param DWOId The DWOId if this is a split skeleton compile unit.
DICompileUnit *
createCompileUnit(unsigned Lang, StringRef File, StringRef Dir,
StringRef Producer, bool isOptimized, StringRef Flags,
unsigned RV, StringRef SplitName = StringRef(),
DICompileUnit::DebugEmissionKind Kind =
DICompileUnit::DebugEmissionKind::FullDebug,
uint64_t DWOId = 0, bool SplitDebugInlining = true);
/// Create a file descriptor to hold debugging information
/// for a file.
DIFile *createFile(StringRef Filename, StringRef Directory);
/// Create a single enumerator value.
DIEnumerator *createEnumerator(StringRef Name, int64_t Val);
/// Create a DWARF unspecified type.
DIBasicType *createUnspecifiedType(StringRef Name);
/// Create C++11 nullptr type.
DIBasicType *createNullPtrType();
/// Create debugging information entry for a basic
/// type.
/// \param Name Type name.
/// \param SizeInBits Size of the type.
/// \param AlignInBits Type alignment.
/// \param Encoding DWARF encoding code, e.g. dwarf::DW_ATE_float.
DIBasicType *createBasicType(StringRef Name, uint64_t SizeInBits,
uint64_t AlignInBits, unsigned Encoding);
/// Create debugging information entry for a qualified
/// type, e.g. 'const int'.
/// \param Tag Tag identifing type, e.g. dwarf::TAG_volatile_type
/// \param FromTy Base Type.
DIDerivedType *createQualifiedType(unsigned Tag, DIType *FromTy);
/// Create debugging information entry for a pointer.
/// \param PointeeTy Type pointed by this pointer.
/// \param SizeInBits Size.
/// \param AlignInBits Alignment. (optional)
/// \param Name Pointer type name. (optional)
DIDerivedType *createPointerType(DIType *PointeeTy, uint64_t SizeInBits,
uint64_t AlignInBits = 0,
StringRef Name = "");
/// Create debugging information entry for a pointer to member.
/// \param PointeeTy Type pointed to by this pointer.
/// \param SizeInBits Size.
/// \param AlignInBits Alignment. (optional)
/// \param Class Type for which this pointer points to members of.
DIDerivedType *
createMemberPointerType(DIType *PointeeTy, DIType *Class,
uint64_t SizeInBits, uint64_t AlignInBits = 0,
DINode::DIFlags Flags = DINode::FlagZero);
/// Create debugging information entry for a c++
/// style reference or rvalue reference type.
DIDerivedType *createReferenceType(unsigned Tag, DIType *RTy,
uint64_t SizeInBits = 0,
uint64_t AlignInBits = 0);
/// Create debugging information entry for a typedef.
/// \param Ty Original type.
/// \param Name Typedef name.
/// \param File File where this type is defined.
/// \param LineNo Line number.
/// \param Context The surrounding context for the typedef.
DIDerivedType *createTypedef(DIType *Ty, StringRef Name, DIFile *File,
unsigned LineNo, DIScope *Context);
/// Create debugging information entry for a 'friend'.
DIDerivedType *createFriend(DIType *Ty, DIType *FriendTy);
/// Create debugging information entry to establish
/// inheritance relationship between two types.
/// \param Ty Original type.
/// \param BaseTy Base type. Ty is inherits from base.
/// \param BaseOffset Base offset.
/// \param Flags Flags to describe inheritance attribute,
/// e.g. private
DIDerivedType *createInheritance(DIType *Ty, DIType *BaseTy,
uint64_t BaseOffset,
DINode::DIFlags Flags);
/// Create debugging information entry for a member.
/// \param Scope Member scope.
/// \param Name Member name.
/// \param File File where this member is defined.
/// \param LineNo Line number.
/// \param SizeInBits Member size.
/// \param AlignInBits Member alignment.
/// \param OffsetInBits Member offset.
/// \param Flags Flags to encode member attribute, e.g. private
/// \param Ty Parent type.
DIDerivedType *createMemberType(DIScope *Scope, StringRef Name,
DIFile *File, unsigned LineNo,
uint64_t SizeInBits, uint64_t AlignInBits,
uint64_t OffsetInBits,
DINode::DIFlags Flags, DIType *Ty);
/// Create debugging information entry for a bit field member.
/// \param Scope Member scope.
/// \param Name Member name.
/// \param File File where this member is defined.
/// \param LineNo Line number.
/// \param SizeInBits Member size.
/// \param AlignInBits Member alignment.
/// \param OffsetInBits Member offset.
/// \param StorageOffsetInBits Member storage offset.
/// \param Flags Flags to encode member attribute.
/// \param Ty Parent type.
DIDerivedType *createBitFieldMemberType(
DIScope *Scope, StringRef Name, DIFile *File, unsigned LineNo,
uint64_t SizeInBits, uint64_t AlignInBits, uint64_t OffsetInBits,
uint64_t StorageOffsetInBits, DINode::DIFlags Flags, DIType *Ty);
/// Create debugging information entry for a
/// C++ static data member.
/// \param Scope Member scope.
/// \param Name Member name.
/// \param File File where this member is declared.
/// \param LineNo Line number.
/// \param Ty Type of the static member.
/// \param Flags Flags to encode member attribute, e.g. private.
/// \param Val Const initializer of the member.
DIDerivedType *createStaticMemberType(DIScope *Scope, StringRef Name,
DIFile *File, unsigned LineNo,
DIType *Ty, DINode::DIFlags Flags,
llvm::Constant *Val);
/// Create debugging information entry for Objective-C
/// instance variable.
/// \param Name Member name.
/// \param File File where this member is defined.
/// \param LineNo Line number.
/// \param SizeInBits Member size.
/// \param AlignInBits Member alignment.
/// \param OffsetInBits Member offset.
/// \param Flags Flags to encode member attribute, e.g. private
/// \param Ty Parent type.
/// \param PropertyNode Property associated with this ivar.
DIDerivedType *createObjCIVar(StringRef Name, DIFile *File, unsigned LineNo,
uint64_t SizeInBits, uint64_t AlignInBits,
uint64_t OffsetInBits, DINode::DIFlags Flags,
DIType *Ty, MDNode *PropertyNode);
/// Create debugging information entry for Objective-C
/// property.
/// \param Name Property name.
/// \param File File where this property is defined.
/// \param LineNumber Line number.
/// \param GetterName Name of the Objective C property getter selector.
/// \param SetterName Name of the Objective C property setter selector.
/// \param PropertyAttributes Objective C property attributes.
/// \param Ty Type.
DIObjCProperty *createObjCProperty(StringRef Name, DIFile *File,
unsigned LineNumber,
StringRef GetterName,
StringRef SetterName,
unsigned PropertyAttributes, DIType *Ty);
/// Create debugging information entry for a class.
/// \param Scope Scope in which this class is defined.
/// \param Name class name.
/// \param File File where this member is defined.
/// \param LineNumber Line number.
/// \param SizeInBits Member size.
/// \param AlignInBits Member alignment.
/// \param OffsetInBits Member offset.
/// \param Flags Flags to encode member attribute, e.g. private
/// \param Elements class members.
/// \param VTableHolder Debug info of the base class that contains vtable
/// for this type. This is used in
/// DW_AT_containing_type. See DWARF documentation
/// for more info.
/// \param TemplateParms Template type parameters.
/// \param UniqueIdentifier A unique identifier for the class.
DICompositeType *createClassType(
DIScope *Scope, StringRef Name, DIFile *File, unsigned LineNumber,
uint64_t SizeInBits, uint64_t AlignInBits, uint64_t OffsetInBits,
DINode::DIFlags Flags, DIType *DerivedFrom, DINodeArray Elements,
DIType *VTableHolder = nullptr, MDNode *TemplateParms = nullptr,
StringRef UniqueIdentifier = "");
/// Create debugging information entry for a struct.
/// \param Scope Scope in which this struct is defined.
/// \param Name Struct name.
/// \param File File where this member is defined.
/// \param LineNumber Line number.
/// \param SizeInBits Member size.
/// \param AlignInBits Member alignment.
/// \param Flags Flags to encode member attribute, e.g. private
/// \param Elements Struct elements.
/// \param RunTimeLang Optional parameter, Objective-C runtime version.
/// \param UniqueIdentifier A unique identifier for the struct.
DICompositeType *createStructType(
DIScope *Scope, StringRef Name, DIFile *File, unsigned LineNumber,
uint64_t SizeInBits, uint64_t AlignInBits, DINode::DIFlags Flags,
DIType *DerivedFrom, DINodeArray Elements, unsigned RunTimeLang = 0,
DIType *VTableHolder = nullptr, StringRef UniqueIdentifier = "");
/// Create debugging information entry for an union.
/// \param Scope Scope in which this union is defined.
/// \param Name Union name.
/// \param File File where this member is defined.
/// \param LineNumber Line number.
/// \param SizeInBits Member size.
/// \param AlignInBits Member alignment.
/// \param Flags Flags to encode member attribute, e.g. private
/// \param Elements Union elements.
/// \param RunTimeLang Optional parameter, Objective-C runtime version.
/// \param UniqueIdentifier A unique identifier for the union.
DICompositeType *createUnionType(DIScope *Scope, StringRef Name,
DIFile *File, unsigned LineNumber,
uint64_t SizeInBits, uint64_t AlignInBits,
DINode::DIFlags Flags,
DINodeArray Elements,
unsigned RunTimeLang = 0,
StringRef UniqueIdentifier = "");
/// Create debugging information for template
/// type parameter.
/// \param Scope Scope in which this type is defined.
/// \param Name Type parameter name.
/// \param Ty Parameter type.
DITemplateTypeParameter *
createTemplateTypeParameter(DIScope *Scope, StringRef Name, DIType *Ty);
/// Create debugging information for template
/// value parameter.
/// \param Scope Scope in which this type is defined.
/// \param Name Value parameter name.
/// \param Ty Parameter type.
/// \param Val Constant parameter value.
DITemplateValueParameter *createTemplateValueParameter(DIScope *Scope,
StringRef Name,
DIType *Ty,
Constant *Val);
/// Create debugging information for a template template parameter.
/// \param Scope Scope in which this type is defined.
/// \param Name Value parameter name.
/// \param Ty Parameter type.
/// \param Val The fully qualified name of the template.
DITemplateValueParameter *createTemplateTemplateParameter(DIScope *Scope,
StringRef Name,
DIType *Ty,
StringRef Val);
/// Create debugging information for a template parameter pack.
/// \param Scope Scope in which this type is defined.
/// \param Name Value parameter name.
/// \param Ty Parameter type.
/// \param Val An array of types in the pack.
DITemplateValueParameter *createTemplateParameterPack(DIScope *Scope,
StringRef Name,
DIType *Ty,
DINodeArray Val);
/// Create debugging information entry for an array.
/// \param Size Array size.
/// \param AlignInBits Alignment.
/// \param Ty Element type.
/// \param Subscripts Subscripts.
DICompositeType *createArrayType(uint64_t Size, uint64_t AlignInBits,
DIType *Ty, DINodeArray Subscripts);
/// Create debugging information entry for a vector type.
/// \param Size Array size.
/// \param AlignInBits Alignment.
/// \param Ty Element type.
/// \param Subscripts Subscripts.
DICompositeType *createVectorType(uint64_t Size, uint64_t AlignInBits,
DIType *Ty, DINodeArray Subscripts);
/// Create debugging information entry for an
/// enumeration.
/// \param Scope Scope in which this enumeration is defined.
/// \param Name Union name.
/// \param File File where this member is defined.
/// \param LineNumber Line number.
/// \param SizeInBits Member size.
/// \param AlignInBits Member alignment.
/// \param Elements Enumeration elements.
/// \param UnderlyingType Underlying type of a C++11/ObjC fixed enum.
/// \param UniqueIdentifier A unique identifier for the enum.
DICompositeType *createEnumerationType(
DIScope *Scope, StringRef Name, DIFile *File, unsigned LineNumber,
uint64_t SizeInBits, uint64_t AlignInBits, DINodeArray Elements,
DIType *UnderlyingType, StringRef UniqueIdentifier = "");
/// Create subroutine type.
/// \param ParameterTypes An array of subroutine parameter types. This
/// includes return type at 0th index.
/// \param Flags E.g.: LValueReference.
/// These flags are used to emit dwarf attributes.
/// \param CC Calling convention, e.g. dwarf::DW_CC_normal
DISubroutineType *
createSubroutineType(DITypeRefArray ParameterTypes,
DINode::DIFlags Flags = DINode::FlagZero,
unsigned CC = 0);
/// Create an external type reference.
/// \param Tag Dwarf TAG.
/// \param File File in which the type is defined.
/// \param UniqueIdentifier A unique identifier for the type.
DICompositeType *createExternalTypeRef(unsigned Tag, DIFile *File,
StringRef UniqueIdentifier);
/// Create a new DIType* with "artificial" flag set.
DIType *createArtificialType(DIType *Ty);
/// Create a new DIType* with the "object pointer"
/// flag set.
DIType *createObjectPointerType(DIType *Ty);
/// Create a permanent forward-declared type.
DICompositeType *createForwardDecl(unsigned Tag, StringRef Name,
DIScope *Scope, DIFile *F, unsigned Line,
unsigned RuntimeLang = 0,
uint64_t SizeInBits = 0,
uint64_t AlignInBits = 0,
StringRef UniqueIdentifier = "");
/// Create a temporary forward-declared type.
DICompositeType *createReplaceableCompositeType(
unsigned Tag, StringRef Name, DIScope *Scope, DIFile *F, unsigned Line,
unsigned RuntimeLang = 0, uint64_t SizeInBits = 0,
uint64_t AlignInBits = 0, DINode::DIFlags Flags = DINode::FlagFwdDecl,
StringRef UniqueIdentifier = "");
/// Retain DIScope* in a module even if it is not referenced
/// through debug info anchors.
void retainType(DIScope *T);
/// Create unspecified parameter type
/// for a subroutine type.
DIBasicType *createUnspecifiedParameter();
/// Get a DINodeArray, create one if required.
DINodeArray getOrCreateArray(ArrayRef<Metadata *> Elements);
/// Get a DITypeRefArray, create one if required.
DITypeRefArray getOrCreateTypeArray(ArrayRef<Metadata *> Elements);
/// Create a descriptor for a value range. This
/// implicitly uniques the values returned.
DISubrange *getOrCreateSubrange(int64_t Lo, int64_t Count);
/// Create a new descriptor for the specified
/// variable.
/// \param Context Variable scope.
/// \param Name Name of the variable.
/// \param LinkageName Mangled name of the variable.
/// \param File File where this variable is defined.
/// \param LineNo Line number.
/// \param Ty Variable Type.
/// \param isLocalToUnit Boolean flag indicate whether this variable is
/// externally visible or not.
/// \param Expr The location of the global relative to the attached
/// GlobalVariable.
/// \param Decl Reference to the corresponding declaration.
DIGlobalVariable *createGlobalVariable(DIScope *Context, StringRef Name,
StringRef LinkageName, DIFile *File,
unsigned LineNo, DIType *Ty,
bool isLocalToUnit,
DIExpression *Expr = nullptr,
MDNode *Decl = nullptr);
/// Identical to createGlobalVariable
/// except that the resulting DbgNode is temporary and meant to be RAUWed.
DIGlobalVariable *createTempGlobalVariableFwdDecl(
DIScope *Context, StringRef Name, StringRef LinkageName, DIFile *File,
unsigned LineNo, DIType *Ty, bool isLocalToUnit, DIExpression *Expr,
MDNode *Decl = nullptr);
/// Create a new descriptor for an auto variable. This is a local variable
/// that is not a subprogram parameter.
///
/// \c Scope must be a \a DILocalScope, and thus its scope chain eventually
/// leads to a \a DISubprogram.
///
/// If \c AlwaysPreserve, this variable will be referenced from its
/// containing subprogram, and will survive some optimizations.
DILocalVariable *
createAutoVariable(DIScope *Scope, StringRef Name, DIFile *File,
unsigned LineNo, DIType *Ty, bool AlwaysPreserve = false,
DINode::DIFlags Flags = DINode::FlagZero);
/// Create a new descriptor for a parameter variable.
///
/// \c Scope must be a \a DILocalScope, and thus its scope chain eventually
/// leads to a \a DISubprogram.
///
/// \c ArgNo is the index (starting from \c 1) of this variable in the
/// subprogram parameters. \c ArgNo should not conflict with other
/// parameters of the same subprogram.
///
/// If \c AlwaysPreserve, this variable will be referenced from its
/// containing subprogram, and will survive some optimizations.
DILocalVariable *
createParameterVariable(DIScope *Scope, StringRef Name, unsigned ArgNo,
DIFile *File, unsigned LineNo, DIType *Ty,
bool AlwaysPreserve = false,
DINode::DIFlags Flags = DINode::FlagZero);
/// Create a new descriptor for the specified
/// variable which has a complex address expression for its address.
/// \param Addr An array of complex address operations.
DIExpression *createExpression(ArrayRef<uint64_t> Addr = None);
DIExpression *createExpression(ArrayRef<int64_t> Addr);
/// Create a descriptor to describe one part
/// of aggregate variable that is fragmented across multiple Values.
///
/// \param OffsetInBits Offset of the piece in bits.
/// \param SizeInBits Size of the piece in bits.
DIExpression *createBitPieceExpression(unsigned OffsetInBits,
unsigned SizeInBits);
/// Create an expression for a variable that does not have an address, but
/// does have a constant value.
DIExpression *createConstantValueExpression(uint64_t Val) {
return DIExpression::get(
VMContext, {dwarf::DW_OP_constu, Val, dwarf::DW_OP_stack_value});
}
/// Create a new descriptor for the specified subprogram.
/// See comments in DISubprogram* for descriptions of these fields.
/// \param Scope Function scope.
/// \param Name Function name.
/// \param LinkageName Mangled function name.
/// \param File File where this variable is defined.
/// \param LineNo Line number.
/// \param Ty Function type.
/// \param isLocalToUnit True if this function is not externally visible.
/// \param isDefinition True if this is a function definition.
/// \param ScopeLine Set to the beginning of the scope this starts
/// \param Flags e.g. is this function prototyped or not.
/// These flags are used to emit dwarf attributes.
/// \param isOptimized True if optimization is ON.
/// \param TParams Function template parameters.
DISubprogram *createFunction(DIScope *Scope, StringRef Name,
StringRef LinkageName, DIFile *File,
unsigned LineNo, DISubroutineType *Ty,
bool isLocalToUnit, bool isDefinition,
unsigned ScopeLine,
DINode::DIFlags Flags = DINode::FlagZero,
bool isOptimized = false,
DITemplateParameterArray TParams = nullptr,
DISubprogram *Decl = nullptr);
/// Identical to createFunction,
/// except that the resulting DbgNode is meant to be RAUWed.
DISubprogram *createTempFunctionFwdDecl(
DIScope *Scope, StringRef Name, StringRef LinkageName, DIFile *File,
unsigned LineNo, DISubroutineType *Ty, bool isLocalToUnit,
bool isDefinition, unsigned ScopeLine,
DINode::DIFlags Flags = DINode::FlagZero, bool isOptimized = false,
DITemplateParameterArray TParams = nullptr,
DISubprogram *Decl = nullptr);
/// Create a new descriptor for the specified C++ method.
/// See comments in \a DISubprogram* for descriptions of these fields.
/// \param Scope Function scope.
/// \param Name Function name.
/// \param LinkageName Mangled function name.
/// \param File File where this variable is defined.
/// \param LineNo Line number.
/// \param Ty Function type.
/// \param isLocalToUnit True if this function is not externally visible..
/// \param isDefinition True if this is a function definition.
/// \param Virtuality Attributes describing virtualness. e.g. pure
/// virtual function.
/// \param VTableIndex Index no of this method in virtual table, or -1u if
/// unrepresentable.
/// \param ThisAdjustment
/// MS ABI-specific adjustment of 'this' that occurs
/// in the prologue.
/// \param VTableHolder Type that holds vtable.
/// \param Flags e.g. is this function prototyped or not.
/// This flags are used to emit dwarf attributes.
/// \param isOptimized True if optimization is ON.
/// \param TParams Function template parameters.
DISubprogram *createMethod(
DIScope *Scope, StringRef Name, StringRef LinkageName, DIFile *File,
unsigned LineNo, DISubroutineType *Ty, bool isLocalToUnit,
bool isDefinition, unsigned Virtuality = 0, unsigned VTableIndex = 0,
int ThisAdjustment = 0, DIType *VTableHolder = nullptr,
DINode::DIFlags Flags = DINode::FlagZero, bool isOptimized = false,
DITemplateParameterArray TParams = nullptr);
/// This creates new descriptor for a namespace with the specified
/// parent scope.
/// \param Scope Namespace scope
/// \param Name Name of this namespace
/// \param File Source file
/// \param LineNo Line number
DINamespace *createNameSpace(DIScope *Scope, StringRef Name, DIFile *File,
unsigned LineNo);
/// This creates new descriptor for a module with the specified
/// parent scope.
/// \param Scope Parent scope
/// \param Name Name of this module
/// \param ConfigurationMacros
/// A space-separated shell-quoted list of -D macro
/// definitions as they would appear on a command line.
/// \param IncludePath The path to the module map file.
/// \param ISysRoot The clang system root (value of -isysroot).
DIModule *createModule(DIScope *Scope, StringRef Name,
StringRef ConfigurationMacros,
StringRef IncludePath,
StringRef ISysRoot);
/// This creates a descriptor for a lexical block with a new file
/// attached. This merely extends the existing
/// lexical block as it crosses a file.
/// \param Scope Lexical block.
/// \param File Source file.
/// \param Discriminator DWARF path discriminator value.
DILexicalBlockFile *createLexicalBlockFile(DIScope *Scope, DIFile *File,
unsigned Discriminator = 0);
/// This creates a descriptor for a lexical block with the
/// specified parent context.
/// \param Scope Parent lexical scope.
/// \param File Source file.
/// \param Line Line number.
/// \param Col Column number.
DILexicalBlock *createLexicalBlock(DIScope *Scope, DIFile *File,
unsigned Line, unsigned Col);
/// Create a descriptor for an imported module.
/// \param Context The scope this module is imported into
/// \param NS The namespace being imported here
/// \param Line Line number
DIImportedEntity *createImportedModule(DIScope *Context, DINamespace *NS,
unsigned Line);
/// Create a descriptor for an imported module.
/// \param Context The scope this module is imported into
/// \param NS An aliased namespace
/// \param Line Line number
DIImportedEntity *createImportedModule(DIScope *Context,
DIImportedEntity *NS, unsigned Line);
/// Create a descriptor for an imported module.
/// \param Context The scope this module is imported into
/// \param M The module being imported here
/// \param Line Line number
DIImportedEntity *createImportedModule(DIScope *Context, DIModule *M,
unsigned Line);
/// Create a descriptor for an imported function.
/// \param Context The scope this module is imported into
/// \param Decl The declaration (or definition) of a function, type, or
/// variable
/// \param Line Line number
DIImportedEntity *createImportedDeclaration(DIScope *Context, DINode *Decl,
unsigned Line,
StringRef Name = "");
/// Insert a new llvm.dbg.declare intrinsic call.
/// \param Storage llvm::Value of the variable
/// \param VarInfo Variable's debug info descriptor.
/// \param Expr A complex location expression.
/// \param DL Debug info location.
/// \param InsertAtEnd Location for the new intrinsic.
Instruction *insertDeclare(llvm::Value *Storage, DILocalVariable *VarInfo,
DIExpression *Expr, const DILocation *DL,
BasicBlock *InsertAtEnd);
/// Insert a new llvm.dbg.declare intrinsic call.
/// \param Storage llvm::Value of the variable
/// \param VarInfo Variable's debug info descriptor.
/// \param Expr A complex location expression.
/// \param DL Debug info location.
/// \param InsertBefore Location for the new intrinsic.
Instruction *insertDeclare(llvm::Value *Storage, DILocalVariable *VarInfo,
DIExpression *Expr, const DILocation *DL,
Instruction *InsertBefore);
/// Insert a new llvm.dbg.value intrinsic call.
/// \param Val llvm::Value of the variable
/// \param Offset Offset
/// \param VarInfo Variable's debug info descriptor.
/// \param Expr A complex location expression.
/// \param DL Debug info location.
/// \param InsertAtEnd Location for the new intrinsic.
Instruction *insertDbgValueIntrinsic(llvm::Value *Val, uint64_t Offset,
DILocalVariable *VarInfo,
DIExpression *Expr,
const DILocation *DL,
BasicBlock *InsertAtEnd);
/// Insert a new llvm.dbg.value intrinsic call.
/// \param Val llvm::Value of the variable
/// \param Offset Offset
/// \param VarInfo Variable's debug info descriptor.
/// \param Expr A complex location expression.
/// \param DL Debug info location.
/// \param InsertBefore Location for the new intrinsic.
Instruction *insertDbgValueIntrinsic(llvm::Value *Val, uint64_t Offset,
DILocalVariable *VarInfo,
DIExpression *Expr,
const DILocation *DL,
Instruction *InsertBefore);
/// Replace the vtable holder in the given composite type.
///
/// If this creates a self reference, it may orphan some unresolved cycles
/// in the operands of \c T, so \a DIBuilder needs to track that.
void replaceVTableHolder(DICompositeType *&T,
DICompositeType *VTableHolder);
/// Replace arrays on a composite type.
///
/// If \c T is resolved, but the arrays aren't -- which can happen if \c T
/// has a self-reference -- \a DIBuilder needs to track the array to
/// resolve cycles.
void replaceArrays(DICompositeType *&T, DINodeArray Elements,
DINodeArray TParams = DINodeArray());
/// Replace a temporary node.
///
/// Call \a MDNode::replaceAllUsesWith() on \c N, replacing it with \c
/// Replacement.
///
/// If \c Replacement is the same as \c N.get(), instead call \a
/// MDNode::replaceWithUniqued(). In this case, the uniqued node could
/// have a different address, so we return the final address.
template <class NodeTy>
NodeTy *replaceTemporary(TempMDNode &&N, NodeTy *Replacement) {
if (N.get() == Replacement)
return cast<NodeTy>(MDNode::replaceWithUniqued(std::move(N)));
N->replaceAllUsesWith(Replacement);
return Replacement;
}
};
} // end namespace llvm
#endif
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