#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/System/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/SmallSet.h"
-#include "llvm/ADT/StringMap.h"
-#include "llvm/CodeGen/MachineLocation.h"
-#include "llvm/GlobalValue.h"
-#include "llvm/Pass.h"
-#include "llvm/Metadata.h"
-#include "llvm/Support/ValueHandle.h"
+#include "llvm/ADT/SmallVector.h"
namespace llvm {
//===----------------------------------------------------------------------===//
// Forward declarations.
class Constant;
-class MDNode;
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>&);
};
/// 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.
+ 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
/// 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.
+ 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;
// Map of invoke call site index values to associated begin EH_LABEL for
// the current function.
- DenseMap<unsigned, unsigned> CallSiteMap;
+ DenseMap<MCSymbol*, unsigned> CallSiteMap;
// The current call site index being processed, if any. 0 if none.
unsigned CurCallSite;
/// 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;
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();
+ MachineModuleInfo(); // DUMMY CONSTRUCTOR, DO NOT CALL.
+ MachineModuleInfo(const MCAsmInfo &MAI); // Real constructor.
~MachineModuleInfo();
bool doInitialization();
/// EndFunction - Discard function meta information.
///
void EndFunction();
+
+ const MCContext &getContext() const { return Context; }
+ MCContext &getContext() { return Context; }
+ void setModule(Module *M) { TheModule = M; }
+ Module *getModule() const { return TheModule; }
+
/// getInfo - Keep track of various per-function pieces of information for
/// backends that would like to do so.
///
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;
- }
-
- /// 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;
- }
-
- /// 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;
- }
-
/// 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);
+ 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.
}
/// setCallSiteBeginLabel - Map the begin label for a call site
- void setCallSiteBeginLabel(unsigned BeginLabel, unsigned Site) {
+ void setCallSiteBeginLabel(MCSymbol *BeginLabel, unsigned Site) {
CallSiteMap[BeginLabel] = Site;
}
/// getCallSiteBeginLabel - Get the call site number for a begin label
- unsigned getCallSiteBeginLabel(unsigned BeginLabel) {
+ unsigned getCallSiteBeginLabel(MCSymbol *BeginLabel) {
assert(CallSiteMap.count(BeginLabel) &&
"Missing call site number for EH_LABEL!");
return CallSiteMap[BeginLabel];
/// 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, 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; }
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