#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/DenseMap.h"
#include "llvm/ADT/PointerIntPair.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallVector.h"
+#include "llvm/Analysis/LibCallSemantics.h"
+#include "llvm/IR/DebugLoc.h"
+#include "llvm/IR/Metadata.h"
+#include "llvm/IR/ValueHandle.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MachineLocation.h"
+#include "llvm/Pass.h"
+#include "llvm/Support/DataTypes.h"
+#include "llvm/Support/Dwarf.h"
namespace llvm {
// Forward declarations.
class Constant;
class GlobalVariable;
+class BlockAddress;
class MDNode;
+class MMIAddrLabelMap;
class MachineBasicBlock;
class MachineFunction;
class Module;
class PointerType;
class StructType;
-
+struct WinEHFuncInfo;
+
+struct SEHHandler {
+ // Filter or finally function. Null indicates a catch-all.
+ const Function *FilterOrFinally;
+
+ // Address of block to recover at. Null for a finally handler.
+ const BlockAddress *RecoverBA;
+};
+
+//===----------------------------------------------------------------------===//
+/// LandingPadInfo - This structure is used to retain landing pad info for
+/// the current function.
+///
+struct LandingPadInfo {
+ MachineBasicBlock *LandingPadBlock; // Landing pad block.
+ SmallVector<MCSymbol *, 1> BeginLabels; // Labels prior to invoke.
+ SmallVector<MCSymbol *, 1> EndLabels; // Labels after invoke.
+ SmallVector<SEHHandler, 1> SEHHandlers; // SEH handlers active at this lpad.
+ MCSymbol *LandingPadLabel; // Label at beginning of landing pad.
+ const Function *Personality; // Personality function.
+ std::vector<int> TypeIds; // List of type ids (filters negative).
+ int WinEHState; // WinEH specific state number.
+
+ explicit LandingPadInfo(MachineBasicBlock *MBB)
+ : LandingPadBlock(MBB), LandingPadLabel(nullptr), Personality(nullptr),
+ WinEHState(-1) {}
+};
+
+//===----------------------------------------------------------------------===//
/// 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<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(0) {}
+ /// Return the entries from a DenseMap in a deterministic sorted orer.
+ /// Clears the map.
+ static SymbolListTy getSortedStubs(DenseMap<MCSymbol*, StubValueTy>&);
};
-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;
- // 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.
+ /// List of moves done by a function's prolog. Used to construct frame maps
+ /// by debug and exception handling consumers.
+ std::vector<MCCFIInstruction> FrameInstructions;
+
+ /// 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.
+ /// LPadToCallSiteMap - Map a landing pad's EH symbol to the call site
+ /// indexes.
+ DenseMap<MCSymbol*, SmallVector<unsigned, 4> > LPadToCallSiteMap;
+
+ /// CallSiteMap - 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.
+ /// CurCallSite - 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<const GlobalVariable *> TypeInfos;
+ /// TypeInfos - List of C++ TypeInfo used in the current function.
+ std::vector<const GlobalValue *> TypeInfos;
- // FilterIds - List of typeids encoding filters used in the current function.
- //
+ /// FilterIds - List of typeids encoding filters used in the current function.
std::vector<unsigned> FilterIds;
- // FilterEnds - List of the indices in FilterIds corresponding to filter
- // terminators.
- //
+ /// FilterEnds - List of the indices in FilterIds corresponding to filter
+ /// terminators.
std::vector<unsigned> FilterEnds;
- // Personalities - Vector of all personality functions ever seen. Used to emit
- // common EH frames.
+ /// Personalities - Vector of all personality functions ever seen. Used to
+ /// emit common EH frames.
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;
+ /// UsesVAFloatArgument - 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 UsesVAFloatArgument;
+
+ /// UsesMorestackAddr - True if the module calls the __morestack function
+ /// indirectly, as is required under the large code model on x86. This is used
+ /// to emit a definition of a symbol, __morestack_addr, containing the
+ /// address. See comments in lib/Target/X86/X86FrameLowering.cpp for more
+ /// details.
+ bool UsesMorestackAddr;
+
+ EHPersonality PersonalityTypeCache;
+
+ DenseMap<const Function *, std::unique_ptr<WinEHFuncInfo>> FuncInfoMap;
+
public:
static char ID; // Pass identification, replacement for typeid
- typedef std::pair<unsigned, DebugLoc> UnsignedDebugLocPair;
- typedef SmallVector<std::pair<TrackingVH<MDNode>, UnsignedDebugLocPair>, 4>
- VariableDbgInfoMapTy;
- VariableDbgInfoMapTy VariableDbgInfo;
+ struct VariableDbgInfo {
+ const DILocalVariable *Var;
+ const DIExpression *Expr;
+ unsigned Slot;
+ const DILocation *Loc;
+
+ VariableDbgInfo(const DILocalVariable *Var, const DIExpression *Expr,
+ unsigned Slot, const DILocation *Loc)
+ : Var(Var), Expr(Expr), Slot(Slot), Loc(Loc) {}
+ };
+ typedef SmallVector<VariableDbgInfo, 4> VariableDbgInfoMapTy;
+ VariableDbgInfoMapTy VariableDbgInfos;
MachineModuleInfo(); // DUMMY CONSTRUCTOR, DO NOT CALL.
- MachineModuleInfo(const MCAsmInfo &MAI); // Real constructor.
- ~MachineModuleInfo();
-
- bool doInitialization();
- bool doFinalization();
+ // Real constructor.
+ MachineModuleInfo(const MCAsmInfo &MAI, const MCRegisterInfo &MRI,
+ const MCObjectFileInfo *MOFI);
+ ~MachineModuleInfo() override;
+
+ // Initialization and Finalization
+ bool doInitialization(Module &) override;
+ bool doFinalization(Module &) override;
/// 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; }
-
+
+ const Function *getWinEHParent(const Function *F) const;
+ WinEHFuncInfo &getWinEHFuncInfo(const Function *F);
+ bool hasWinEHFuncInfo(const Function *F) const {
+ return FuncInfoMap.count(getWinEHParent(F)) > 0;
+ }
+
/// 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)
+ if (ObjFileMMI == nullptr)
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(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; }
-
- /// getFrameMoves - Returns a reference to a list of moves done in the current
+
+ bool usesVAFloatArgument() const {
+ return UsesVAFloatArgument;
+ }
+
+ void setUsesVAFloatArgument(bool b) {
+ UsesVAFloatArgument = b;
+ }
+
+ bool usesMorestackAddr() const {
+ return UsesMorestackAddr;
+ }
+
+ void setUsesMorestackAddr(bool b) {
+ UsesMorestackAddr = b;
+ }
+
+ /// \brief Returns a reference to a list of cfi instructions in the current
/// function's prologue. Used to construct frame maps for debug and exception
/// handling comsumers.
- std::vector<MachineMove> &getFrameMoves() { return FrameMoves; }
-
+ const std::vector<MCCFIInstruction> &getFrameInstructions() const {
+ return FrameInstructions;
+ }
+
+ unsigned LLVM_ATTRIBUTE_UNUSED_RESULT
+ addFrameInst(const MCCFIInstruction &Inst) {
+ FrameInstructions.push_back(Inst);
+ return FrameInstructions.size() - 1;
+ }
+
/// 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);
+ MCSymbol *getAddrLabelSymbol(const BasicBlock *BB) {
+ return getAddrLabelSymbolToEmit(BB).front();
+ }
/// 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);
-
+ ArrayRef<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,
+ void takeDeletedSymbolsForFunction(const Function *F,
std::vector<MCSymbol*> &Result);
-
+
//===- EH ---------------------------------------------------------------===//
/// getOrCreateLandingPadInfo - Find or create an LandingPadInfo for the
/// 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.
MCSymbol *addLandingPad(MachineBasicBlock *LandingPad);
-
+
/// addPersonality - Provide the personality function for the exception
/// information.
void addPersonality(MachineBasicBlock *LandingPad,
const Function *Personality);
+ void addWinEHState(MachineBasicBlock *LandingPad, int State);
+
/// getPersonalityIndex - Get index of the current personality function inside
/// Personalitites array
unsigned getPersonalityIndex() const;
return Personalities;
}
- /// 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<const GlobalVariable *> &TyInfo);
+ ArrayRef<const GlobalValue *> TyInfo);
/// addFilterTypeInfo - Provide the filter typeinfo for a landing pad.
///
void addFilterTypeInfo(MachineBasicBlock *LandingPad,
- std::vector<const GlobalVariable *> &TyInfo);
+ ArrayRef<const GlobalValue *> 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
+ void addSEHCatchHandler(MachineBasicBlock *LandingPad, const Function *Filter,
+ const BlockAddress *RecoverLabel);
+
+ void addSEHCleanupHandler(MachineBasicBlock *LandingPad,
+ const Function *Cleanup);
+
+ /// getTypeIDFor - Return the type id for the specified typeinfo. This is
/// function wide.
- unsigned getTypeIDFor(const GlobalVariable *TI);
+ unsigned getTypeIDFor(const GlobalValue *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(DenseMap<MCSymbol*, uintptr_t> *LPMap = 0);
-
+ void TidyLandingPads(DenseMap<MCSymbol*, uintptr_t> *LPMap = nullptr);
+
/// 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
+ /// setCallSiteLandingPad - Map the landing pad's EH symbol to the call
+ /// site indexes.
+ void setCallSiteLandingPad(MCSymbol *Sym, ArrayRef<unsigned> Sites);
+
+ /// getCallSiteLandingPad - Get the call site indexes for a landing pad EH
+ /// symbol.
+ SmallVectorImpl<unsigned> &getCallSiteLandingPad(MCSymbol *Sym) {
+ assert(hasCallSiteLandingPad(Sym) &&
+ "missing call site number for landing pad!");
+ return LPadToCallSiteMap[Sym];
+ }
+
+ /// hasCallSiteLandingPad - Return true if the landing pad Eh symbol has an
+ /// associated call site.
+ bool hasCallSiteLandingPad(MCSymbol *Sym) {
+ return !LPadToCallSiteMap[Sym].empty();
+ }
+
+ /// 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
+ /// getCallSiteBeginLabel - Get the call site number for a begin label.
unsigned getCallSiteBeginLabel(MCSymbol *BeginLabel) {
- assert(CallSiteMap.count(BeginLabel) &&
+ assert(hasCallSiteBeginLabel(BeginLabel) &&
"Missing call site number for EH_LABEL!");
return CallSiteMap[BeginLabel];
}
+ /// hasCallSiteBeginLabel - Return true if the begin label has a call site
+ /// number associated with it.
+ bool hasCallSiteBeginLabel(MCSymbol *BeginLabel) {
+ return CallSiteMap[BeginLabel] != 0;
+ }
+
/// 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; }
+ unsigned getCurrentCallSite() { return CurCallSite; }
/// getTypeInfos - Return a reference to the C++ typeinfo for the current
/// function.
- const std::vector<const GlobalVariable *> &getTypeInfos() const {
+ const std::vector<const GlobalValue *> &getTypeInfos() const {
return TypeInfos;
}
/// of one is required to emit exception handling info.
const Function *getPersonality() const;
+ /// Classify the personality function amongst known EH styles.
+ EHPersonality getPersonalityType();
+
/// 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)));
+ void setVariableDbgInfo(const DILocalVariable *Var, const DIExpression *Expr,
+ unsigned Slot, const DILocation *Loc) {
+ VariableDbgInfos.emplace_back(Var, Expr, Slot, Loc);
}
- VariableDbgInfoMapTy &getVariableDbgInfo();
+ VariableDbgInfoMapTy &getVariableDbgInfo() { return VariableDbgInfos; }
}; // End class MachineModuleInfo
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