#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/System/DataTypes.h"
#include "llvm/ADT/DenseMap.h"
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
protected:
static SymbolListTy GetSortedStubs(const DenseMap<MCSymbol*, StubValueTy>&);
};
-
-
+
+
//===----------------------------------------------------------------------===//
/// LandingPadInfo - This structure is used to retain landing pad info for
SmallVector<MCSymbol*, 1> BeginLabels; // Labels prior to invoke.
SmallVector<MCSymbol*, 1> EndLabels; // Labels after invoke.
MCSymbol *LandingPadLabel; // Label at beginning of landing pad.
- Function *Personality; // Personality function.
+ const Function *Personality; // Personality function.
std::vector<int> TypeIds; // List of type ids (filters negative)
explicit LandingPadInfo(MachineBasicBlock *MBB)
: 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 {
/// 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;
- // 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;
-
// 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;
// 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. 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
- typedef std::pair<unsigned, TrackingVH<MDNode> > UnsignedAndMDNodePair;
- typedef SmallVector< std::pair<TrackingVH<MDNode>, UnsignedAndMDNodePair>, 4>
+ typedef std::pair<unsigned, DebugLoc> UnsignedDebugLocPair;
+ typedef SmallVector<std::pair<TrackingVH<MDNode>, UnsignedDebugLocPair>, 4>
VariableDbgInfoMapTy;
VariableDbgInfoMapTy VariableDbgInfo;
MachineModuleInfo(); // DUMMY CONSTRUCTOR, DO NOT CALL.
MachineModuleInfo(const MCAsmInfo &MAI); // Real constructor.
~MachineModuleInfo();
-
+
bool doInitialization();
bool doFinalization();
/// 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.
///
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; }
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;
- }
-
- /// getLabelSym - Turn a label ID into a symbol.
- MCSymbol *getLabelSym(unsigned ID);
-
- /// 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.
- assert(0 < LabelID && LabelID <= LabelIDList.size() &&
- "Old label ID out of range.");
- LabelIDList[LabelID - 1] = 0;
+
+ bool callsExternalVAFunctionWithFloatingPointArguments() const {
+ return CallsExternalVAFunctionWithFloatingPointArguments;
}
-
- /// isLabelDeleted - Return true if the label was deleted.
- /// FIXME: This should eventually be eliminated and use the 'is emitted' bit
- /// on MCSymbol.
- bool isLabelDeleted(unsigned LabelID) const {
- assert(LabelID <= LabelIDList.size() && "Debug label ID out of range.");
- return LabelID == 0 || 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.
/// associate it with a try landing pad block.
void addInvoke(MachineBasicBlock *LandingPad,
MCSymbol *BeginLabel, MCSymbol *EndLabel);
-
- /// addLandingPad - Add a new panding pad. Returns the label ID for the
+
+ /// 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;
}
/// 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 {
/// 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, MDNode *Scope) {
- VariableDbgInfo.push_back(std::make_pair(N, std::make_pair(Slot, Scope)));
+ /// 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; }
+ VariableDbgInfoMapTy &getVariableDbgInfo() { return VariableDbgInfo; }
}; // End class MachineModuleInfo