#ifndef LLVM_CODEGEN_MACHINEMODULEINFO_H
#define LLVM_CODEGEN_MACHINEMODULEINFO_H
+#include "llvm/Pass.h"
+#include "llvm/GlobalValue.h"
+#include "llvm/Metadata.h"
+#include "llvm/CodeGen/MachineLocation.h"
+#include "llvm/MC/MCContext.h"
#include "llvm/Support/Dwarf.h"
+#include "llvm/Support/DebugLoc.h"
+#include "llvm/Support/ValueHandle.h"
#include "llvm/Support/DataTypes.h"
-#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/UniqueVector.h"
+#include "llvm/ADT/PointerIntPair.h"
#include "llvm/ADT/SmallPtrSet.h"
-#include "llvm/ADT/StringMap.h"
-#include "llvm/CodeGen/MachineLocation.h"
-#include "llvm/GlobalValue.h"
-#include "llvm/Pass.h"
+#include "llvm/ADT/SmallVector.h"
namespace llvm {
// Forward declarations.
class Constant;
class GlobalVariable;
+class MDNode;
class MachineBasicBlock;
class MachineFunction;
class Module;
class PointerType;
class StructType;
+/// MachineModuleInfoImpl - This class can be derived from and used by targets
+/// to hold private target-specific information for each Module. Objects of
+/// type are accessed/created with MMI::getInfo and destroyed when the
+/// MachineModuleInfo is destroyed.
+class MachineModuleInfoImpl {
+public:
+ typedef PointerIntPair<MCSymbol*, 1, bool> StubValueTy;
+ virtual ~MachineModuleInfoImpl();
+ typedef std::vector<std::pair<MCSymbol*, StubValueTy> > SymbolListTy;
+protected:
+ static SymbolListTy GetSortedStubs(const DenseMap<MCSymbol*, StubValueTy>&);
+};
+
+
+
//===----------------------------------------------------------------------===//
/// LandingPadInfo - This structure is used to retain landing pad info for
/// the current function.
///
struct LandingPadInfo {
- MachineBasicBlock *LandingPadBlock; // Landing pad block.
- SmallVector<unsigned, 1> BeginLabels; // Labels prior to invoke.
- SmallVector<unsigned, 1> EndLabels; // Labels after invoke.
- unsigned LandingPadLabel; // Label at beginning of landing pad.
- Function *Personality; // Personality function.
- std::vector<int> TypeIds; // List of type ids (filters negative)
+ MachineBasicBlock *LandingPadBlock; // Landing pad block.
+ SmallVector<MCSymbol*, 1> BeginLabels; // Labels prior to invoke.
+ SmallVector<MCSymbol*, 1> EndLabels; // Labels after invoke.
+ MCSymbol *LandingPadLabel; // Label at beginning of landing pad.
+ const Function *Personality; // Personality function.
+ std::vector<int> TypeIds; // List of type ids (filters negative)
explicit LandingPadInfo(MachineBasicBlock *MBB)
- : LandingPadBlock(MBB)
- , LandingPadLabel(0)
- , Personality(NULL)
- {}
+ : LandingPadBlock(MBB), LandingPadLabel(0), Personality(0) {}
};
+class MMIAddrLabelMap;
+
//===----------------------------------------------------------------------===//
/// MachineModuleInfo - This class contains meta information specific to a
-/// module. Queries can be made by different debugging and exception handling
+/// module. Queries can be made by different debugging and exception handling
/// schemes and reformated for specific use.
///
class MachineModuleInfo : public ImmutablePass {
-private:
- // LabelIDList - One entry per assigned label. Normally the entry is equal to
- // the list index(+1). If the entry is zero then the label has been deleted.
- // Any other value indicates the label has been deleted by is mapped to
- // another label.
- std::vector<unsigned> LabelIDList;
-
+ /// Context - This is the MCContext used for the entire code generator.
+ MCContext Context;
+
+ /// TheModule - This is the LLVM Module being worked on.
+ const Module *TheModule;
+
+ /// ObjFileMMI - This is the object-file-format-specific implementation of
+ /// MachineModuleInfoImpl, which lets targets accumulate whatever info they
+ /// want.
+ MachineModuleInfoImpl *ObjFileMMI;
+
// FrameMoves - List of moves done by a function's prolog. Used to construct
// frame maps by debug and exception handling consumers.
std::vector<MachineMove> FrameMoves;
-
+
// LandingPads - List of LandingPadInfo describing the landing pad information
// in the current function.
std::vector<LandingPadInfo> LandingPads;
-
+
+ // Map of invoke call site index values to associated begin EH_LABEL for
+ // the current function.
+ DenseMap<MCSymbol*, unsigned> CallSiteMap;
+
+ // The current call site index being processed, if any. 0 if none.
+ unsigned CurCallSite;
+
// TypeInfos - List of C++ TypeInfo used in the current function.
//
- std::vector<GlobalVariable *> TypeInfos;
+ std::vector<const GlobalVariable *> TypeInfos;
// FilterIds - List of typeids encoding filters used in the current function.
//
// Personalities - Vector of all personality functions ever seen. Used to emit
// common EH frames.
- std::vector<Function *> Personalities;
+ std::vector<const Function *> Personalities;
- // UsedFunctions - the functions in the llvm.used list in a more easily
- // searchable format.
+ /// UsedFunctions - The functions in the @llvm.used list in a more easily
+ /// searchable format. This does not include the functions in
+ /// llvm.compiler.used.
SmallPtrSet<const Function *, 32> UsedFunctions;
+
+ /// AddrLabelSymbols - This map keeps track of which symbol is being used for
+ /// the specified basic block's address of label.
+ MMIAddrLabelMap *AddrLabelSymbols;
+
bool CallsEHReturn;
bool CallsUnwindInit;
-
+
/// DbgInfoAvailable - True if debugging information is available
/// in this module.
bool DbgInfoAvailable;
+
+ /// True if this module calls VarArg function with floating point arguments.
+ /// This is used to emit an undefined reference to fltused on Windows targets.
+ bool CallsExternalVAFunctionWithFloatingPointArguments;
+
public:
static char ID; // Pass identification, replacement for typeid
- MachineModuleInfo();
+ typedef std::pair<unsigned, DebugLoc> UnsignedDebugLocPair;
+ typedef SmallVector<std::pair<TrackingVH<MDNode>, UnsignedDebugLocPair>, 4>
+ VariableDbgInfoMapTy;
+ VariableDbgInfoMapTy VariableDbgInfo;
+
+ MachineModuleInfo(); // DUMMY CONSTRUCTOR, DO NOT CALL.
+ // Real constructor.
+ MachineModuleInfo(const MCAsmInfo &MAI, const TargetAsmInfo *TAI);
~MachineModuleInfo();
-
- /// doInitialization - Initialize the state for a new module.
- ///
+
bool doInitialization();
-
- /// doFinalization - Tear down the state after completion of a module.
- ///
bool doFinalization();
-
- /// BeginFunction - Begin gathering function meta information.
- ///
- void BeginFunction(MachineFunction *MF);
-
+
/// EndFunction - Discard function meta information.
///
void EndFunction();
+ const MCContext &getContext() const { return Context; }
+ MCContext &getContext() { return Context; }
+
+ void setModule(const Module *M) { TheModule = M; }
+ const Module *getModule() const { return TheModule; }
+
+ /// getInfo - Keep track of various per-function pieces of information for
+ /// backends that would like to do so.
+ ///
+ template<typename Ty>
+ Ty &getObjFileInfo() {
+ if (ObjFileMMI == 0)
+ ObjFileMMI = new Ty(*this);
+ return *static_cast<Ty*>(ObjFileMMI);
+ }
+
+ template<typename Ty>
+ const Ty &getObjFileInfo() const {
+ return const_cast<MachineModuleInfo*>(this)->getObjFileInfo<Ty>();
+ }
+
/// AnalyzeModule - Scan the module for global debug information.
///
- void AnalyzeModule(Module &M);
-
+ void AnalyzeModule(const Module &M);
+
/// hasDebugInfo - Returns true if valid debug info is present.
///
bool hasDebugInfo() const { return DbgInfoAvailable; }
- void setDebugInfoAvailability(bool avail) { DbgInfoAvailable = true; }
+ void setDebugInfoAvailability(bool avail) { DbgInfoAvailable = avail; }
bool callsEHReturn() const { return CallsEHReturn; }
void setCallsEHReturn(bool b) { CallsEHReturn = b; }
bool callsUnwindInit() const { return CallsUnwindInit; }
void setCallsUnwindInit(bool b) { CallsUnwindInit = b; }
-
- /// NextLabelID - Return the next unique label id.
- ///
- unsigned NextLabelID() {
- unsigned ID = (unsigned)LabelIDList.size() + 1;
- LabelIDList.push_back(ID);
- return ID;
- }
-
- /// RecordSourceLine - Records location information and associates it with a
- /// label. Returns a unique label ID used to generate a label and
- /// provide correspondence to the source line list.
- unsigned RecordSourceLine(unsigned Line, unsigned Column, unsigned Source);
-
- /// InvalidateLabel - Inhibit use of the specified label # from
- /// MachineModuleInfo, for example because the code was deleted.
- void InvalidateLabel(unsigned LabelID) {
- // Remap to zero to indicate deletion.
- RemapLabel(LabelID, 0);
- }
- /// RemapLabel - Indicate that a label has been merged into another.
- ///
- void RemapLabel(unsigned OldLabelID, unsigned NewLabelID) {
- assert(0 < OldLabelID && OldLabelID <= LabelIDList.size() &&
- "Old label ID out of range.");
- assert(NewLabelID <= LabelIDList.size() &&
- "New label ID out of range.");
- LabelIDList[OldLabelID - 1] = NewLabelID;
+ bool callsExternalVAFunctionWithFloatingPointArguments() const {
+ return CallsExternalVAFunctionWithFloatingPointArguments;
}
-
- /// MappedLabel - Find out the label's final ID. Zero indicates deletion.
- /// ID != Mapped ID indicates that the label was folded into another label.
- unsigned MappedLabel(unsigned LabelID) const {
- assert(LabelID <= LabelIDList.size() && "Debug label ID out of range.");
- return LabelID ? LabelIDList[LabelID - 1] : 0;
+
+ void setCallsExternalVAFunctionWithFloatingPointArguments(bool b) {
+ CallsExternalVAFunctionWithFloatingPointArguments = b;
}
/// getFrameMoves - Returns a reference to a list of moves done in the current
/// function's prologue. Used to construct frame maps for debug and exception
/// handling comsumers.
std::vector<MachineMove> &getFrameMoves() { return FrameMoves; }
-
- //===-EH-----------------------------------------------------------------===//
+
+ /// getAddrLabelSymbol - Return the symbol to be used for the specified basic
+ /// block when its address is taken. This cannot be its normal LBB label
+ /// because the block may be accessed outside its containing function.
+ MCSymbol *getAddrLabelSymbol(const BasicBlock *BB);
+
+ /// getAddrLabelSymbolToEmit - Return the symbol to be used for the specified
+ /// basic block when its address is taken. If other blocks were RAUW'd to
+ /// this one, we may have to emit them as well, return the whole set.
+ std::vector<MCSymbol*> getAddrLabelSymbolToEmit(const BasicBlock *BB);
+
+ /// takeDeletedSymbolsForFunction - If the specified function has had any
+ /// references to address-taken blocks generated, but the block got deleted,
+ /// return the symbol now so we can emit it. This prevents emitting a
+ /// reference to a symbol that has no definition.
+ void takeDeletedSymbolsForFunction(const Function *F,
+ std::vector<MCSymbol*> &Result);
+
+
+ //===- EH ---------------------------------------------------------------===//
/// getOrCreateLandingPadInfo - Find or create an LandingPadInfo for the
/// specified MachineBasicBlock.
/// addInvoke - Provide the begin and end labels of an invoke style call and
/// associate it with a try landing pad block.
- void addInvoke(MachineBasicBlock *LandingPad, unsigned BeginLabel,
- unsigned EndLabel);
-
- /// addLandingPad - Add a new panding pad. Returns the label ID for the
+ void addInvoke(MachineBasicBlock *LandingPad,
+ MCSymbol *BeginLabel, MCSymbol *EndLabel);
+
+ /// addLandingPad - Add a new panding pad. Returns the label ID for the
/// landing pad entry.
- unsigned addLandingPad(MachineBasicBlock *LandingPad);
-
+ MCSymbol *addLandingPad(MachineBasicBlock *LandingPad);
+
/// addPersonality - Provide the personality function for the exception
/// information.
- void addPersonality(MachineBasicBlock *LandingPad, Function *Personality);
+ void addPersonality(MachineBasicBlock *LandingPad,
+ const Function *Personality);
/// getPersonalityIndex - Get index of the current personality function inside
/// Personalitites array
unsigned getPersonalityIndex() const;
/// getPersonalities - Return array of personality functions ever seen.
- const std::vector<Function *>& getPersonalities() const {
+ const std::vector<const Function *>& getPersonalities() const {
return Personalities;
}
- // UsedFunctions - Return set of the functions in the llvm.used list.
- const SmallPtrSet<const Function *, 32>& getUsedFunctions() const {
- return UsedFunctions;
+ /// isUsedFunction - Return true if the functions in the llvm.used list. This
+ /// does not return true for things in llvm.compiler.used unless they are also
+ /// in llvm.used.
+ bool isUsedFunction(const Function *F) {
+ return UsedFunctions.count(F);
}
/// addCatchTypeInfo - Provide the catch typeinfo for a landing pad.
///
void addCatchTypeInfo(MachineBasicBlock *LandingPad,
- std::vector<GlobalVariable *> &TyInfo);
+ std::vector<const GlobalVariable *> &TyInfo);
/// addFilterTypeInfo - Provide the filter typeinfo for a landing pad.
///
void addFilterTypeInfo(MachineBasicBlock *LandingPad,
- std::vector<GlobalVariable *> &TyInfo);
+ std::vector<const GlobalVariable *> &TyInfo);
/// addCleanup - Add a cleanup action for a landing pad.
///
void addCleanup(MachineBasicBlock *LandingPad);
- /// getTypeIDFor - Return the type id for the specified typeinfo. This is
+ /// getTypeIDFor - Return the type id for the specified typeinfo. This is
/// function wide.
- unsigned getTypeIDFor(GlobalVariable *TI);
+ unsigned getTypeIDFor(const GlobalVariable *TI);
/// getFilterIDFor - Return the id of the filter encoded by TyIds. This is
/// function wide.
/// TidyLandingPads - Remap landing pad labels and remove any deleted landing
/// pads.
- void TidyLandingPads();
-
+ void TidyLandingPads(DenseMap<MCSymbol*, uintptr_t> *LPMap = 0);
+
/// getLandingPads - Return a reference to the landing pad info for the
/// current function.
const std::vector<LandingPadInfo> &getLandingPads() const {
return LandingPads;
}
-
+
+ /// setCallSiteBeginLabel - Map the begin label for a call site
+ void setCallSiteBeginLabel(MCSymbol *BeginLabel, unsigned Site) {
+ CallSiteMap[BeginLabel] = Site;
+ }
+
+ /// getCallSiteBeginLabel - Get the call site number for a begin label
+ unsigned getCallSiteBeginLabel(MCSymbol *BeginLabel) {
+ assert(CallSiteMap.count(BeginLabel) &&
+ "Missing call site number for EH_LABEL!");
+ return CallSiteMap[BeginLabel];
+ }
+
+ /// setCurrentCallSite - Set the call site currently being processed.
+ void setCurrentCallSite(unsigned Site) { CurCallSite = Site; }
+
+ /// getCurrentCallSite - Get the call site currently being processed, if any.
+ /// return zero if none.
+ unsigned getCurrentCallSite(void) { return CurCallSite; }
+
/// getTypeInfos - Return a reference to the C++ typeinfo for the current
/// function.
- const std::vector<GlobalVariable *> &getTypeInfos() const {
+ const std::vector<const GlobalVariable *> &getTypeInfos() const {
return TypeInfos;
}
/// getPersonality - Return a personality function if available. The presence
/// of one is required to emit exception handling info.
- Function *getPersonality() const;
+ const Function *getPersonality() const;
+
+ /// setVariableDbgInfo - Collect information used to emit debugging
+ /// information of a variable.
+ void setVariableDbgInfo(MDNode *N, unsigned Slot, DebugLoc Loc) {
+ VariableDbgInfo.push_back(std::make_pair(N, std::make_pair(Slot, Loc)));
+ }
+
+ VariableDbgInfoMapTy &getVariableDbgInfo() { return VariableDbgInfo; }
}; // End class MachineModuleInfo
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