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llvm-6502/include/llvm/IR/DIBuilder.h
Duncan P. N. Exon Smith e56023a059 IR: Give 'DI' prefix to debug info metadata 
Finish off PR23080 by renaming the debug info IR constructs from `MD*`
to `DI*`.  The last of the `DIDescriptor` classes were deleted in
r235356, and the last of the related typedefs removed in r235413, so
this has all baked for about a week.

Note: If you have out-of-tree code (like a frontend), I recommend that
you get everything compiling and tests passing with the *previous*
commit before updating to this one.  It'll be easier to keep track of
what code is using the `DIDescriptor` hierarchy and what you've already
updated, and I think you're extremely unlikely to insert bugs.  YMMV of
course.

Back to *this* commit: I did this using the rename-md-di-nodes.sh
upgrade script I've attached to PR23080 (both code and testcases) and
filtered through clang-format-diff.py.  I edited the tests for
test/Assembler/invalid-generic-debug-node-*.ll by hand since the columns
were off-by-three.  It should work on your out-of-tree testcases (and
code, if you've followed the advice in the previous paragraph).

Some of the tests are in badly named files now (e.g.,
test/Assembler/invalid-mdcompositetype-missing-tag.ll should be
'dicompositetype'); I'll come back and move the files in a follow-up
commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236120 91177308-0d34-0410-b5e6-96231b3b80d8
2015-04-29 16:38:44 +00:00

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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/ADT/ArrayRef.h"
#include "llvm/ADT/StringRef.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;
class DIBuilder {
Module &M;
LLVMContext &VMContext;
TempMDTuple TempEnumTypes;
TempMDTuple TempRetainTypes;
TempMDTuple TempSubprograms;
TempMDTuple TempGVs;
TempMDTuple TempImportedModules;
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;
/// \brief Track nodes that may be unresolved.
SmallVector<TrackingMDNodeRef, 4> UnresolvedNodes;
bool AllowUnresolvedNodes;
/// Each subprogram's preserved local variables.
DenseMap<MDNode *, std::vector<TrackingMDNodeRef>> PreservedVariables;
DIBuilder(const DIBuilder &) = delete;
void operator=(const DIBuilder &) = delete;
/// \brief Create a temporary.
///
/// Create an \a temporary node and track it in \a UnresolvedNodes.
void trackIfUnresolved(MDNode *N);
public:
/// \brief 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);
enum DebugEmissionKind { FullDebug=1, LineTablesOnly };
/// finalize - Construct any deferred debug info descriptors.
void finalize();
/// createCompileUnit - 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 ON 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 EmitDebugInfo A boolean flag which indicates whether debug
/// information should be written to the final
/// output or not. When this is false, debug
/// information annotations will be present in
/// the IL but they are not written to the final
/// assembly or object file. This supports tracking
/// source location information in the back end
/// without actually changing the output (e.g.,
/// when using optimization remarks).
DICompileUnit *createCompileUnit(unsigned Lang, StringRef File,
StringRef Dir, StringRef Producer,
bool isOptimized, StringRef Flags,
unsigned RV, StringRef SplitName = "",
DebugEmissionKind Kind = FullDebug,
bool EmitDebugInfo = true);
/// createFile - Create a file descriptor to hold debugging information
/// for a file.
DIFile *createFile(StringRef Filename, StringRef Directory);
/// createEnumerator - Create a single enumerator value.
DIEnumerator *createEnumerator(StringRef Name, int64_t Val);
/// \brief Create a DWARF unspecified type.
DIBasicType *createUnspecifiedType(StringRef Name);
/// \brief Create C++11 nullptr type.
DIBasicType *createNullPtrType();
/// createBasicType - 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);
/// createQualifiedType - 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);
/// createPointerType - 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 = "");
/// \brief 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);
/// createReferenceType - Create debugging information entry for a c++
/// style reference or rvalue reference type.
DIDerivedType *createReferenceType(unsigned Tag, DIType *RTy);
/// createTypedef - 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);
/// createFriend - Create debugging information entry for a 'friend'.
DIDerivedType *createFriend(DIType *Ty, DIType *FriendTy);
/// createInheritance - 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, unsigned Flags);
/// createMemberType - 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, unsigned Flags,
DIType *Ty);
/// createStaticMemberType - 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, unsigned Flags,
llvm::Constant *Val);
/// createObjCIVar - 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, unsigned Flags,
DIType *Ty, MDNode *PropertyNode);
/// createObjCProperty - 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);
/// createClassType - 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, unsigned Flags,
DIType *DerivedFrom, DINodeArray Elements,
DIType *VTableHolder = nullptr,
MDNode *TemplateParms = nullptr,
StringRef UniqueIdentifier = "");
/// createStructType - 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, unsigned Flags,
DIType *DerivedFrom, DINodeArray Elements, unsigned RunTimeLang = 0,
DIType *VTableHolder = nullptr, StringRef UniqueIdentifier = "");
/// createUnionType - 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,
unsigned Flags, DINodeArray Elements,
unsigned RunTimeLang = 0,
StringRef UniqueIdentifier = "");
/// createTemplateTypeParameter - 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);
/// createTemplateValueParameter - 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);
/// \brief 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);
/// \brief 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);
/// createArrayType - 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);
/// createVectorType - 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);
/// createEnumerationType - 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 = "");
/// createSubroutineType - Create subroutine type.
/// @param File File in which this subroutine is defined.
/// @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.
DISubroutineType *createSubroutineType(DIFile *File,
DITypeRefArray ParameterTypes,
unsigned Flags = 0);
/// createArtificialType - Create a new DIType* with "artificial" flag set.
DIType *createArtificialType(DIType *Ty);
/// createObjectPointerType - Create a new DIType* with the "object pointer"
/// flag set.
DIType *createObjectPointerType(DIType *Ty);
/// \brief 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 = "");
/// \brief 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, unsigned Flags = DINode::FlagFwdDecl,
StringRef UniqueIdentifier = "");
/// retainType - Retain DIType* in a module even if it is not referenced
/// through debug info anchors.
void retainType(DIType *T);
/// createUnspecifiedParameter - Create unspecified parameter type
/// for a subroutine type.
DIBasicType *createUnspecifiedParameter();
/// getOrCreateArray - Get a DINodeArray, create one if required.
DINodeArray getOrCreateArray(ArrayRef<Metadata *> Elements);
/// getOrCreateTypeArray - Get a DITypeRefArray, create one if required.
DITypeRefArray getOrCreateTypeArray(ArrayRef<Metadata *> Elements);
/// getOrCreateSubrange - Create a descriptor for a value range. This
/// implicitly uniques the values returned.
DISubrange *getOrCreateSubrange(int64_t Lo, int64_t Count);
/// createGlobalVariable - 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 Val llvm::Value of the variable.
/// @param Decl Reference to the corresponding declaration.
DIGlobalVariable *createGlobalVariable(DIScope *Context, StringRef Name,
StringRef LinkageName, DIFile *File,
unsigned LineNo, DIType *Ty,
bool isLocalToUnit,
llvm::Constant *Val,
MDNode *Decl = nullptr);
/// createTempGlobalVariableFwdDecl - 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, llvm::Constant *Val,
MDNode *Decl = nullptr);
/// createLocalVariable - Create a new descriptor for the specified
/// local variable.
/// @param Tag Dwarf TAG. Usually DW_TAG_auto_variable or
/// DW_TAG_arg_variable.
/// @param Scope Variable scope.
/// @param Name Variable name.
/// @param File File where this variable is defined.
/// @param LineNo Line number.
/// @param Ty Variable Type
/// @param AlwaysPreserve Boolean. Set to true if debug info for this
/// variable should be preserved in optimized build.
/// @param Flags Flags, e.g. artificial variable.
/// @param ArgNo If this variable is an argument then this argument's
/// number. 1 indicates 1st argument.
DILocalVariable *createLocalVariable(unsigned Tag, DIScope *Scope,
StringRef Name, DIFile *File,
unsigned LineNo, DIType *Ty,
bool AlwaysPreserve = false,
unsigned Flags = 0,
unsigned ArgNo = 0);
/// createExpression - 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);
/// createBitPieceExpression - 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);
/// createFunction - 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 Fn llvm::Function pointer.
/// @param TParam Function template parameters.
DISubprogram *
createFunction(DIScope *Scope, StringRef Name, StringRef LinkageName,
DIFile *File, unsigned LineNo, DISubroutineType *Ty,
bool isLocalToUnit, bool isDefinition, unsigned ScopeLine,
unsigned Flags = 0, bool isOptimized = false,
Function *Fn = nullptr, MDNode *TParam = nullptr,
MDNode *Decl = nullptr);
/// createTempFunctionFwdDecl - 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, unsigned Flags = 0,
bool isOptimized = false, Function *Fn = nullptr,
MDNode *TParam = nullptr, MDNode *Decl = nullptr);
/// FIXME: this is added for dragonegg. Once we update dragonegg
/// to call resolve function, this will be removed.
DISubprogram *
createFunction(DIScopeRef Scope, StringRef Name, StringRef LinkageName,
DIFile *File, unsigned LineNo, DISubroutineType *Ty,
bool isLocalToUnit, bool isDefinition, unsigned ScopeLine,
unsigned Flags = 0, bool isOptimized = false,
Function *Fn = nullptr, MDNode *TParam = nullptr,
MDNode *Decl = nullptr);
/// createMethod - Create a new descriptor for the specified C++ method.
/// 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 Virtuality Attributes describing virtualness. e.g. pure
/// virtual function.
/// @param VTableIndex Index no of this method in virtual table.
/// @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 Fn llvm::Function pointer.
/// @param TParam 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, DIType *VTableHolder = nullptr,
unsigned Flags = 0, bool isOptimized = false,
Function *Fn = nullptr, MDNode *TParam = nullptr);
/// createNameSpace - 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);
/// createLexicalBlockFile - 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);
/// createLexicalBlock - 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);
/// \brief 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);
/// \brief 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);
/// \brief 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 = "");
/// insertDeclare - 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);
/// insertDeclare - 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);
/// insertDbgValueIntrinsic - 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);
/// insertDbgValueIntrinsic - 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);
/// \brief 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);
/// \brief 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 TParems = DINodeArray());
/// \brief 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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