#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/UniqueVector.h"
#include "llvm/ADT/SmallPtrSet.h"
+#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/CodeGen/MachineLocation.h"
#include "llvm/GlobalValue.h"
//===----------------------------------------------------------------------===//
// Forward declarations.
class Constant;
+class MDNode;
class GlobalVariable;
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:
+ virtual ~MachineModuleInfoImpl();
+};
+
+
//===----------------------------------------------------------------------===//
/// LandingPadInfo - This structure is used to retain landing pad info for
/// schemes and reformated for specific use.
///
class MachineModuleInfo : public ImmutablePass {
-private:
+ /// 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
// common EH frames.
std::vector<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;
+ /// UsedDbgLabels - labels are used by debug info entries.
+ SmallSet<unsigned, 8> UsedDbgLabels;
+
bool CallsEHReturn;
bool CallsUnwindInit;
/// DbgInfoAvailable - True if debugging information is available
/// in this module.
bool DbgInfoAvailable;
+
public:
static char ID; // Pass identification, replacement for typeid
+ typedef DenseMap<MDNode *, std::pair<MDNode *, unsigned> > VariableDbgInfoMapTy;
+ VariableDbgInfoMapTy VariableDbgInfo;
+
MachineModuleInfo();
~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);
+ void BeginFunction(MachineFunction *) {}
/// EndFunction - Discard function meta information.
///
void EndFunction();
+ /// 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);
+
+ assert((void*)dynamic_cast<Ty*>(ObjFileMMI) == (void*)ObjFileMMI &&
+ "Invalid concrete type or multiple inheritence for getInfo");
+ 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);
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) {
return LabelID ? LabelIDList[LabelID - 1] : 0;
}
+ /// isDbgLabelUsed - Return true if label with LabelID is used by
+ /// DwarfWriter.
+ bool isDbgLabelUsed(unsigned LabelID) {
+ return UsedDbgLabels.count(LabelID);
+ }
+
+ /// RecordUsedDbgLabel - Mark label with LabelID as used. This is used
+ /// by DwarfWriter to inform DebugLabelFolder that certain labels are
+ /// not to be deleted.
+ void RecordUsedDbgLabel(unsigned LabelID) {
+ UsedDbgLabels.insert(LabelID);
+ }
+
/// 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.
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.
/// of one is required to emit exception handling info.
Function *getPersonality() const;
+ /// setVariableDbgInfo - Collect information used to emit debugging information
+ /// of a variable.
+ void setVariableDbgInfo(MDNode *N, MDNode *L, unsigned S) {
+ if (N && L)
+ VariableDbgInfo[N] = std::make_pair(L, S);
+ }
+
+ VariableDbgInfoMapTy &getVariableDbgInfo() { return VariableDbgInfo; }
+
}; // End class MachineModuleInfo
} // End llvm namespace
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