#ifndef LLVM_IR_MODULE_H
#define LLVM_IR_MODULE_H
-#include "llvm/ADT/OwningPtr.h"
+#include "llvm/ADT/iterator_range.h"
+#include "llvm/IR/Comdat.h"
+#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/GlobalAlias.h"
#include "llvm/IR/GlobalVariable.h"
#include "llvm/IR/Metadata.h"
#include "llvm/Support/CBindingWrapping.h"
+#include "llvm/Support/CodeGen.h"
#include "llvm/Support/DataTypes.h"
-#include "llvm/Support/system_error.h"
+#include <system_error>
namespace llvm {
-
class FunctionType;
class GVMaterializer;
class LLVMContext;
+class RandomNumberGenerator;
class StructType;
-template<typename T> struct DenseMapInfo;
-template<typename KeyT, typename ValueT, typename KeyInfoT> class DenseMap;
template<> struct ilist_traits<Function>
: public SymbolTableListTraits<Function, Module> {
typedef iplist<GlobalAlias> AliasListType;
/// The type for the list of named metadata.
typedef ilist<NamedMDNode> NamedMDListType;
+ /// The type of the comdat "symbol" table.
+ typedef StringMap<Comdat> ComdatSymTabType;
/// The Global Variable iterator.
typedef GlobalListType::iterator global_iterator;
/// The Function constant iterator
typedef FunctionListType::const_iterator const_iterator;
+ /// The Function reverse iterator.
+ typedef FunctionListType::reverse_iterator reverse_iterator;
+ /// The Function constant reverse iterator.
+ typedef FunctionListType::const_reverse_iterator const_reverse_iterator;
+
/// The Global Alias iterators.
typedef AliasListType::iterator alias_iterator;
/// The Global Alias constant iterator
/// The named metadata iterators.
typedef NamedMDListType::iterator named_metadata_iterator;
- /// The named metadata constant interators.
+ /// The named metadata constant iterators.
typedef NamedMDListType::const_iterator const_named_metadata_iterator;
/// This enumeration defines the supported behaviors of module flags.
/// Appends the two values, which are required to be metadata
/// nodes. However, duplicate entries in the second list are dropped
/// during the append operation.
- AppendUnique = 6
+ AppendUnique = 6,
+
+ // Markers:
+ ModFlagBehaviorFirstVal = Error,
+ ModFlagBehaviorLastVal = AppendUnique
};
+ /// Checks if Metadata represents a valid ModFlagBehavior, and stores the
+ /// converted result in MFB.
+ static bool isValidModFlagBehavior(Metadata *MD, ModFlagBehavior &MFB);
+
struct ModuleFlagEntry {
ModFlagBehavior Behavior;
MDString *Key;
- Value *Val;
- ModuleFlagEntry(ModFlagBehavior B, MDString *K, Value *V)
- : Behavior(B), Key(K), Val(V) {}
+ Metadata *Val;
+ ModuleFlagEntry(ModFlagBehavior B, MDString *K, Metadata *V)
+ : Behavior(B), Key(K), Val(V) {}
};
/// @}
NamedMDListType NamedMDList; ///< The named metadata in the module
std::string GlobalScopeAsm; ///< Inline Asm at global scope.
ValueSymbolTable *ValSymTab; ///< Symbol table for values
- OwningPtr<GVMaterializer> Materializer; ///< Used to materialize GlobalValues
+ ComdatSymTabType ComdatSymTab; ///< Symbol table for COMDATs
+ std::unique_ptr<GVMaterializer>
+ Materializer; ///< Used to materialize GlobalValues
std::string ModuleID; ///< Human readable identifier for the module
std::string TargetTriple; ///< Platform target triple Module compiled on
- std::string DataLayout; ///< Target data description
+ ///< Format: (arch)(sub)-(vendor)-(sys0-(abi)
void *NamedMDSymTab; ///< NamedMDNode names.
+ DataLayout DL; ///< DataLayout associated with the module
friend class Constant;
/// @returns the module identifier as a string
const std::string &getModuleIdentifier() const { return ModuleID; }
- /// Get the data layout string for the module's target platform. This encodes
- /// the type sizes and alignments expected by this module.
- /// @returns the data layout as a string
- const std::string &getDataLayout() const { return DataLayout; }
+ /// \brief Get a short "name" for the module.
+ ///
+ /// This is useful for debugging or logging. It is essentially a convenience
+ /// wrapper around getModuleIdentifier().
+ StringRef getName() const { return ModuleID; }
+
+ /// Get the data layout string for the module's target platform. This is
+ /// equivalent to getDataLayout()->getStringRepresentation().
+ const std::string &getDataLayoutStr() const {
+ return DL.getStringRepresentation();
+ }
+
+ /// Get the data layout for the module's target platform.
+ const DataLayout &getDataLayout() const;
/// Get the target triple which is a string describing the target host.
/// @returns a string containing the target triple.
/// @returns a string containing the module-scope inline assembly blocks.
const std::string &getModuleInlineAsm() const { return GlobalScopeAsm; }
+ /// Get a RandomNumberGenerator salted for use with this module. The
+ /// RNG can be seeded via -rng-seed=<uint64> and is salted with the
+ /// ModuleID and the provided pass salt. The returned RNG should not
+ /// be shared across threads or passes.
+ ///
+ /// A unique RNG per pass ensures a reproducible random stream even
+ /// when other randomness consuming passes are added or removed. In
+ /// addition, the random stream will be reproducible across LLVM
+ /// versions when the pass does not change.
+ RandomNumberGenerator *createRNG(const Pass* P) const;
+
/// @}
/// @name Module Level Mutators
/// @{
void setModuleIdentifier(StringRef ID) { ModuleID = ID; }
/// Set the data layout
- void setDataLayout(StringRef DL) { DataLayout = DL; }
+ void setDataLayout(StringRef Desc);
+ void setDataLayout(const DataLayout &Other);
/// Set the target triple.
void setTargetTriple(StringRef T) { TargetTriple = T; }
/// Set the module-scope inline assembly blocks.
+ /// A trailing newline is added if the input doesn't have one.
void setModuleInlineAsm(StringRef Asm) {
GlobalScopeAsm = Asm;
if (!GlobalScopeAsm.empty() &&
GlobalScopeAsm += '\n';
}
- /// Append to the module-scope inline assembly blocks, automatically inserting
- /// a separating newline if necessary.
+ /// Append to the module-scope inline assembly blocks.
+ /// A trailing newline is added if the input doesn't have one.
void appendModuleInlineAsm(StringRef Asm) {
GlobalScopeAsm += Asm;
if (!GlobalScopeAsm.empty() &&
/// @name Generic Value Accessors
/// @{
- /// getNamedValue - Return the global value in the module with
- /// the specified name, of arbitrary type. This method returns null
- /// if a global with the specified name is not found.
+ /// Return the global value in the module with the specified name, of
+ /// arbitrary type. This method returns null if a global with the specified
+ /// name is not found.
GlobalValue *getNamedValue(StringRef Name) const;
- /// getMDKindID - Return a unique non-zero ID for the specified metadata kind.
- /// This ID is uniqued across modules in the current LLVMContext.
+ /// Return a unique non-zero ID for the specified metadata kind. This ID is
+ /// uniqued across modules in the current LLVMContext.
unsigned getMDKindID(StringRef Name) const;
- /// getMDKindNames - Populate client supplied SmallVector with the name for
- /// custom metadata IDs registered in this LLVMContext.
+ /// Populate client supplied SmallVector with the name for custom metadata IDs
+ /// registered in this LLVMContext.
void getMDKindNames(SmallVectorImpl<StringRef> &Result) const;
-
- typedef DenseMap<StructType*, unsigned, DenseMapInfo<StructType*> >
- NumeredTypesMapTy;
-
- /// getTypeByName - Return the type with the specified name, or null if there
- /// is none by that name.
+ /// Return the type with the specified name, or null if there is none by that
+ /// name.
StructType *getTypeByName(StringRef Name) const;
+ std::vector<StructType *> getIdentifiedStructTypes() const;
+
/// @}
/// @name Function Accessors
/// @{
- /// getOrInsertFunction - Look up the specified function in the module symbol
- /// table. Four possibilities:
+ /// Look up the specified function in the module symbol table. Four
+ /// possibilities:
/// 1. If it does not exist, add a prototype for the function and return it.
/// 2. If it exists, and has a local linkage, the existing function is
/// renamed and a new one is inserted.
Constant *getOrInsertFunction(StringRef Name, FunctionType *T);
- /// getOrInsertFunction - Look up the specified function in the module symbol
- /// table. If it does not exist, add a prototype for the function and return
- /// it. This function guarantees to return a constant of pointer to the
- /// specified function type or a ConstantExpr BitCast of that type if the
- /// named function has a different type. This version of the method takes a
- /// null terminated list of function arguments, which makes it easier for
- /// clients to use.
+ /// Look up the specified function in the module symbol table. If it does not
+ /// exist, add a prototype for the function and return it. This function
+ /// guarantees to return a constant of pointer to the specified function type
+ /// or a ConstantExpr BitCast of that type if the named function has a
+ /// different type. This version of the method takes a null terminated list of
+ /// function arguments, which makes it easier for clients to use.
Constant *getOrInsertFunction(StringRef Name,
AttributeSet AttributeList,
- Type *RetTy, ...) END_WITH_NULL;
+ Type *RetTy, ...) LLVM_END_WITH_NULL;
- /// getOrInsertFunction - Same as above, but without the attributes.
+ /// Same as above, but without the attributes.
Constant *getOrInsertFunction(StringRef Name, Type *RetTy, ...)
- END_WITH_NULL;
+ LLVM_END_WITH_NULL;
- /// getFunction - Look up the specified function in the module symbol table.
- /// If it does not exist, return null.
+ /// Look up the specified function in the module symbol table. If it does not
+ /// exist, return null.
Function *getFunction(StringRef Name) const;
/// @}
/// @name Global Variable Accessors
/// @{
- /// getGlobalVariable - Look up the specified global variable in the module
- /// symbol table. If it does not exist, return null. If AllowInternal is set
- /// to true, this function will return types that have InternalLinkage. By
- /// default, these types are not returned.
- const GlobalVariable *getGlobalVariable(StringRef Name,
- bool AllowInternal = false) const {
+ /// Look up the specified global variable in the module symbol table. If it
+ /// does not exist, return null. If AllowInternal is set to true, this
+ /// function will return types that have InternalLinkage. By default, these
+ /// types are not returned.
+ GlobalVariable *getGlobalVariable(StringRef Name) const {
+ return getGlobalVariable(Name, false);
+ }
+
+ GlobalVariable *getGlobalVariable(StringRef Name, bool AllowInternal) const {
return const_cast<Module *>(this)->getGlobalVariable(Name, AllowInternal);
}
GlobalVariable *getGlobalVariable(StringRef Name, bool AllowInternal = false);
- /// getNamedGlobal - Return the global variable in the module with the
- /// specified name, of arbitrary type. This method returns null if a global
- /// with the specified name is not found.
+ /// Return the global variable in the module with the specified name, of
+ /// arbitrary type. This method returns null if a global with the specified
+ /// name is not found.
GlobalVariable *getNamedGlobal(StringRef Name) {
return getGlobalVariable(Name, true);
}
return const_cast<Module *>(this)->getNamedGlobal(Name);
}
- /// getOrInsertGlobal - Look up the specified global in the module symbol
- /// table.
+ /// Look up the specified global in the module symbol table.
/// 1. If it does not exist, add a declaration of the global and return it.
/// 2. Else, the global exists but has the wrong type: return the function
/// with a constantexpr cast to the right type.
/// @name Global Alias Accessors
/// @{
- /// getNamedAlias - Return the global alias in the module with the
- /// specified name, of arbitrary type. This method returns null if a global
- /// with the specified name is not found.
+ /// Return the global alias in the module with the specified name, of
+ /// arbitrary type. This method returns null if a global with the specified
+ /// name is not found.
GlobalAlias *getNamedAlias(StringRef Name) const;
/// @}
/// @name Named Metadata Accessors
/// @{
- /// getNamedMetadata - Return the first NamedMDNode in the module with the
- /// specified name. This method returns null if a NamedMDNode with the
- /// specified name is not found.
+ /// Return the first NamedMDNode in the module with the specified name. This
+ /// method returns null if a NamedMDNode with the specified name is not found.
NamedMDNode *getNamedMetadata(const Twine &Name) const;
- /// getOrInsertNamedMetadata - Return the named MDNode in the module
- /// with the specified name. This method returns a new NamedMDNode if a
- /// NamedMDNode with the specified name is not found.
+ /// Return the named MDNode in the module with the specified name. This method
+ /// returns a new NamedMDNode if a NamedMDNode with the specified name is not
+ /// found.
NamedMDNode *getOrInsertNamedMetadata(StringRef Name);
- /// eraseNamedMetadata - Remove the given NamedMDNode from this module
- /// and delete it.
+ /// Remove the given NamedMDNode from this module and delete it.
void eraseNamedMetadata(NamedMDNode *NMD);
+/// @}
+/// @name Comdat Accessors
+/// @{
+
+ /// Return the Comdat in the module with the specified name. It is created
+ /// if it didn't already exist.
+ Comdat *getOrInsertComdat(StringRef Name);
+
/// @}
/// @name Module Flags Accessors
/// @{
- /// getModuleFlagsMetadata - Returns the module flags in the provided vector.
+ /// Returns the module flags in the provided vector.
void getModuleFlagsMetadata(SmallVectorImpl<ModuleFlagEntry> &Flags) const;
/// Return the corresponding value if Key appears in module flags, otherwise
/// return null.
- Value *getModuleFlag(StringRef Key) const;
+ Metadata *getModuleFlag(StringRef Key) const;
- /// getModuleFlagsMetadata - Returns the NamedMDNode in the module that
- /// represents module-level flags. This method returns null if there are no
- /// module-level flags.
+ /// Returns the NamedMDNode in the module that represents module-level flags.
+ /// This method returns null if there are no module-level flags.
NamedMDNode *getModuleFlagsMetadata() const;
- /// getOrInsertModuleFlagsMetadata - Returns the NamedMDNode in the module
- /// that represents module-level flags. If module-level flags aren't found,
- /// it creates the named metadata that contains them.
+ /// Returns the NamedMDNode in the module that represents module-level flags.
+ /// If module-level flags aren't found, it creates the named metadata that
+ /// contains them.
NamedMDNode *getOrInsertModuleFlagsMetadata();
- /// addModuleFlag - Add a module-level flag to the module-level flags
- /// metadata. It will create the module-level flags named metadata if it
- /// doesn't already exist.
- void addModuleFlag(ModFlagBehavior Behavior, StringRef Key, Value *Val);
+ /// Add a module-level flag to the module-level flags metadata. It will create
+ /// the module-level flags named metadata if it doesn't already exist.
+ void addModuleFlag(ModFlagBehavior Behavior, StringRef Key, Metadata *Val);
+ void addModuleFlag(ModFlagBehavior Behavior, StringRef Key, Constant *Val);
void addModuleFlag(ModFlagBehavior Behavior, StringRef Key, uint32_t Val);
void addModuleFlag(MDNode *Node);
/// @name Materialization
/// @{
- /// setMaterializer - Sets the GVMaterializer to GVM. This module must not
- /// yet have a Materializer. To reset the materializer for a module that
- /// already has one, call MaterializeAllPermanently first. Destroying this
- /// module will destroy its materializer without materializing any more
- /// GlobalValues. Without destroying the Module, there is no way to detach or
- /// destroy a materializer without materializing all the GVs it controls, to
- /// avoid leaving orphan unmaterialized GVs.
+ /// Sets the GVMaterializer to GVM. This module must not yet have a
+ /// Materializer. To reset the materializer for a module that already has one,
+ /// call MaterializeAllPermanently first. Destroying this module will destroy
+ /// its materializer without materializing any more GlobalValues. Without
+ /// destroying the Module, there is no way to detach or destroy a materializer
+ /// without materializing all the GVs it controls, to avoid leaving orphan
+ /// unmaterialized GVs.
void setMaterializer(GVMaterializer *GVM);
- /// getMaterializer - Retrieves the GVMaterializer, if any, for this Module.
+ /// Retrieves the GVMaterializer, if any, for this Module.
GVMaterializer *getMaterializer() const { return Materializer.get(); }
- /// isMaterializable - True if the definition of GV has yet to be materialized
- /// from the GVMaterializer.
- bool isMaterializable(const GlobalValue *GV) const;
- /// isDematerializable - Returns true if this GV was loaded from this Module's
- /// GVMaterializer and the GVMaterializer knows how to dematerialize the GV.
+ /// Returns true if this GV was loaded from this Module's GVMaterializer and
+ /// the GVMaterializer knows how to dematerialize the GV.
bool isDematerializable(const GlobalValue *GV) const;
- /// Materialize - Make sure the GlobalValue is fully read. If the module is
- /// corrupt, this returns true and fills in the optional string with
- /// information about the problem. If successful, this returns false.
- bool Materialize(GlobalValue *GV, std::string *ErrInfo = 0);
- /// Dematerialize - If the GlobalValue is read in, and if the GVMaterializer
- /// supports it, release the memory for the function, and set it up to be
- /// materialized lazily. If !isDematerializable(), this method is a noop.
- void Dematerialize(GlobalValue *GV);
+ /// Make sure the GlobalValue is fully read. If the module is corrupt, this
+ /// returns true and fills in the optional string with information about the
+ /// problem. If successful, this returns false.
+ std::error_code materialize(GlobalValue *GV);
+ /// If the GlobalValue is read in, and if the GVMaterializer supports it,
+ /// release the memory for the function, and set it up to be materialized
+ /// lazily. If !isDematerializable(), this method is a no-op.
+ void dematerialize(GlobalValue *GV);
/// Make sure all GlobalValues in this Module are fully read.
- error_code materializeAll();
+ std::error_code materializeAll();
+
+ /// Make sure all GlobalValues in this Module are fully read and clear the
+ /// Materializer. If the module is corrupt, this DOES NOT clear the old
+ /// Materializer.
+ std::error_code materializeAllPermanently();
- /// MaterializeAllPermanently - Make sure all GlobalValues in this Module are
- /// fully read and clear the Materializer. If the module is corrupt, this
- /// returns true, fills in the optional string with information about the
- /// problem, and DOES NOT clear the old Materializer. If successful, this
- /// returns false.
- bool MaterializeAllPermanently(std::string *ErrInfo = 0);
+ std::error_code materializeMetadata();
/// @}
/// @name Direct access to the globals list, functions list, and symbol table
const GlobalListType &getGlobalList() const { return GlobalList; }
/// Get the Module's list of global variables.
GlobalListType &getGlobalList() { return GlobalList; }
- static iplist<GlobalVariable> Module::*getSublistAccess(GlobalVariable*) {
+ static GlobalListType Module::*getSublistAccess(GlobalVariable*) {
return &Module::GlobalList;
}
/// Get the Module's list of functions (constant).
const FunctionListType &getFunctionList() const { return FunctionList; }
/// Get the Module's list of functions.
FunctionListType &getFunctionList() { return FunctionList; }
- static iplist<Function> Module::*getSublistAccess(Function*) {
+ static FunctionListType Module::*getSublistAccess(Function*) {
return &Module::FunctionList;
}
/// Get the Module's list of aliases (constant).
const AliasListType &getAliasList() const { return AliasList; }
/// Get the Module's list of aliases.
AliasListType &getAliasList() { return AliasList; }
- static iplist<GlobalAlias> Module::*getSublistAccess(GlobalAlias*) {
+ static AliasListType Module::*getSublistAccess(GlobalAlias*) {
return &Module::AliasList;
}
/// Get the Module's list of named metadata (constant).
const NamedMDListType &getNamedMDList() const { return NamedMDList; }
/// Get the Module's list of named metadata.
NamedMDListType &getNamedMDList() { return NamedMDList; }
- static ilist<NamedMDNode> Module::*getSublistAccess(NamedMDNode*) {
+ static NamedMDListType Module::*getSublistAccess(NamedMDNode*) {
return &Module::NamedMDList;
}
/// Get the symbol table of global variable and function identifiers
const ValueSymbolTable &getValueSymbolTable() const { return *ValSymTab; }
/// Get the Module's symbol table of global variable and function identifiers.
ValueSymbolTable &getValueSymbolTable() { return *ValSymTab; }
+ /// Get the Module's symbol table for COMDATs (constant).
+ const ComdatSymTabType &getComdatSymbolTable() const { return ComdatSymTab; }
+ /// Get the Module's symbol table for COMDATs.
+ ComdatSymTabType &getComdatSymbolTable() { return ComdatSymTab; }
/// @}
/// @name Global Variable Iteration
const_global_iterator global_end () const { return GlobalList.end(); }
bool global_empty() const { return GlobalList.empty(); }
+ iterator_range<global_iterator> globals() {
+ return iterator_range<global_iterator>(global_begin(), global_end());
+ }
+ iterator_range<const_global_iterator> globals() const {
+ return iterator_range<const_global_iterator>(global_begin(), global_end());
+ }
+
/// @}
/// @name Function Iteration
/// @{
const_iterator begin() const { return FunctionList.begin(); }
iterator end () { return FunctionList.end(); }
const_iterator end () const { return FunctionList.end(); }
+ reverse_iterator rbegin() { return FunctionList.rbegin(); }
+ const_reverse_iterator rbegin() const{ return FunctionList.rbegin(); }
+ reverse_iterator rend() { return FunctionList.rend(); }
+ const_reverse_iterator rend() const { return FunctionList.rend(); }
size_t size() const { return FunctionList.size(); }
bool empty() const { return FunctionList.empty(); }
+ iterator_range<iterator> functions() {
+ return iterator_range<iterator>(begin(), end());
+ }
+ iterator_range<const_iterator> functions() const {
+ return iterator_range<const_iterator>(begin(), end());
+ }
+
/// @}
/// @name Alias Iteration
/// @{
size_t alias_size () const { return AliasList.size(); }
bool alias_empty() const { return AliasList.empty(); }
+ iterator_range<alias_iterator> aliases() {
+ return iterator_range<alias_iterator>(alias_begin(), alias_end());
+ }
+ iterator_range<const_alias_iterator> aliases() const {
+ return iterator_range<const_alias_iterator>(alias_begin(), alias_end());
+ }
/// @}
/// @name Named Metadata Iteration
size_t named_metadata_size() const { return NamedMDList.size(); }
bool named_metadata_empty() const { return NamedMDList.empty(); }
+ iterator_range<named_metadata_iterator> named_metadata() {
+ return iterator_range<named_metadata_iterator>(named_metadata_begin(),
+ named_metadata_end());
+ }
+ iterator_range<const_named_metadata_iterator> named_metadata() const {
+ return iterator_range<const_named_metadata_iterator>(named_metadata_begin(),
+ named_metadata_end());
+ }
+
+ /// Destroy ConstantArrays in LLVMContext if they are not used.
+ /// ConstantArrays constructed during linking can cause quadratic memory
+ /// explosion. Releasing all unused constants can cause a 20% LTO compile-time
+ /// slowdown for a large application.
+ ///
+ /// NOTE: Constants are currently owned by LLVMContext. This can then only
+ /// be called where all uses of the LLVMContext are understood.
+ void dropTriviallyDeadConstantArrays();
/// @}
/// @name Utility functions for printing and dumping Module objects
/// @{
/// Print the module to an output stream with an optional
- /// AssemblyAnnotationWriter.
- void print(raw_ostream &OS, AssemblyAnnotationWriter *AAW) const;
+ /// AssemblyAnnotationWriter. If \c ShouldPreserveUseListOrder, then include
+ /// uselistorder directives so that use-lists can be recreated when reading
+ /// the assembly.
+ void print(raw_ostream &OS, AssemblyAnnotationWriter *AAW,
+ bool ShouldPreserveUseListOrder = false) const;
/// Dump the module to stderr (for debugging).
void dump() const;
/// is delete'd for real. Note that no operations are valid on an object
/// that has "dropped all references", except operator delete.
void dropAllReferences();
+
+/// @}
+/// @name Utility functions for querying Debug information.
+/// @{
+
+ /// \brief Returns the Dwarf Version by checking module flags.
+ unsigned getDwarfVersion() const;
+
+ /// \brief Returns the CodeView Version by checking module flags.
+ /// Returns zero if not present in module.
+ unsigned getCodeViewFlag() const;
+
+/// @}
+/// @name Utility functions for querying and setting PIC level
+/// @{
+
+ /// \brief Returns the PIC level (small or large model)
+ PICLevel::Level getPICLevel() const;
+
+ /// \brief Set the PIC level (small or large model)
+ void setPICLevel(PICLevel::Level PL);
/// @}
};
/// An raw_ostream inserter for modules.
inline raw_ostream &operator<<(raw_ostream &O, const Module &M) {
- M.print(O, 0);
+ M.print(O, nullptr);
return O;
}
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