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[CodeGen] Cleanup MachineModuleInfo doxygen comments. NFC.
Remove redundant names and only keep header comments. llvm-svn: 287166
This commit is contained in:
Ahmed Bougacha
parent
89d1e292c3
commit
11c0c884d4
@ -69,8 +69,7 @@ struct SEHHandler {
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};
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//===----------------------------------------------------------------------===//
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/// LandingPadInfo - This structure is used to retain landing pad info for
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/// the current function.
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/// This structure is used to retain landing pad info for the current function.
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///
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struct LandingPadInfo {
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MachineBasicBlock *LandingPadBlock; // Landing pad block.
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@ -85,10 +84,10 @@ struct LandingPadInfo {
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};
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//===----------------------------------------------------------------------===//
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/// MachineModuleInfoImpl - This class can be derived from and used by targets
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/// to hold private target-specific information for each Module. Objects of
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/// type are accessed/created with MMI::getInfo and destroyed when the
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/// MachineModuleInfo is destroyed.
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/// This class can be derived from and used by targets to hold private
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/// target-specific information for each Module. Objects of type are
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/// accessed/created with MMI::getInfo and destroyed when the MachineModuleInfo
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/// is destroyed.
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///
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class MachineModuleInfoImpl {
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public:
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@ -103,20 +102,20 @@ protected:
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};
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//===----------------------------------------------------------------------===//
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/// MachineModuleInfo - This class contains meta information specific to a
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/// module. Queries can be made by different debugging and exception handling
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/// schemes and reformated for specific use.
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/// This class contains meta information specific to a module. Queries can be
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/// made by different debugging and exception handling schemes and reformated
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/// for specific use.
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///
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class MachineModuleInfo : public ImmutablePass {
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const TargetMachine &TM;
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/// Context - This is the MCContext used for the entire code generator.
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/// This is the MCContext used for the entire code generator.
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MCContext Context;
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/// TheModule - This is the LLVM Module being worked on.
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/// This is the LLVM Module being worked on.
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const Module *TheModule;
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/// ObjFileMMI - This is the object-file-format-specific implementation of
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/// This is the object-file-format-specific implementation of
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/// MachineModuleInfoImpl, which lets targets accumulate whatever info they
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/// want.
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MachineModuleInfoImpl *ObjFileMMI;
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@ -125,38 +124,35 @@ class MachineModuleInfo : public ImmutablePass {
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/// by debug and exception handling consumers.
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std::vector<MCCFIInstruction> FrameInstructions;
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/// LandingPads - List of LandingPadInfo describing the landing pad
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/// information in the current function.
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/// List of LandingPadInfo describing the landing pad information in the
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/// current function.
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std::vector<LandingPadInfo> LandingPads;
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/// LPadToCallSiteMap - Map a landing pad's EH symbol to the call site
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/// indexes.
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/// Map a landing pad's EH symbol to the call site indexes.
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DenseMap<MCSymbol*, SmallVector<unsigned, 4> > LPadToCallSiteMap;
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/// CallSiteMap - Map of invoke call site index values to associated begin
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/// EH_LABEL for the current function.
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/// Map of invoke call site index values to associated begin EH_LABEL for the
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/// current function.
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DenseMap<MCSymbol*, unsigned> CallSiteMap;
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/// CurCallSite - The current call site index being processed, if any. 0 if
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/// none.
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/// The current call site index being processed, if any. 0 if none.
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unsigned CurCallSite;
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/// TypeInfos - List of C++ TypeInfo used in the current function.
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/// List of C++ TypeInfo used in the current function.
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std::vector<const GlobalValue *> TypeInfos;
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/// FilterIds - List of typeids encoding filters used in the current function.
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/// List of typeids encoding filters used in the current function.
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std::vector<unsigned> FilterIds;
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/// FilterEnds - List of the indices in FilterIds corresponding to filter
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/// terminators.
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/// List of the indices in FilterIds corresponding to filter terminators.
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std::vector<unsigned> FilterEnds;
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/// Personalities - Vector of all personality functions ever seen. Used to
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/// emit common EH frames.
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/// Vector of all personality functions ever seen. Used to emit common EH
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/// frames.
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std::vector<const Function *> Personalities;
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/// AddrLabelSymbols - This map keeps track of which symbol is being used for
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/// the specified basic block's address of label.
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/// This map keeps track of which symbol is being used for the specified
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/// basic block's address of label.
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MMIAddrLabelMap *AddrLabelSymbols;
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bool CallsEHReturn;
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@ -169,20 +165,18 @@ class MachineModuleInfo : public ImmutablePass {
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// -g. At this moment, there's no way to specify that some CFI directives
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// go into .eh_frame only, while others go into .debug_frame only.
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/// DbgInfoAvailable - True if debugging information is available
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/// in this module.
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/// True if debugging information is available in this module.
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bool DbgInfoAvailable;
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/// UsesVAFloatArgument - True if this module calls VarArg function with
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/// floating-point arguments. This is used to emit an undefined reference
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/// to _fltused on Windows targets.
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/// True if this module calls VarArg function with floating-point arguments.
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/// This is used to emit an undefined reference to _fltused on Windows
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/// targets.
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bool UsesVAFloatArgument;
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/// UsesMorestackAddr - True if the module calls the __morestack function
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/// indirectly, as is required under the large code model on x86. This is used
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/// to emit a definition of a symbol, __morestack_addr, containing the
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/// address. See comments in lib/Target/X86/X86FrameLowering.cpp for more
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/// details.
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/// True if the module calls the __morestack function indirectly, as is
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/// required under the large code model on x86. This is used to emit
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/// a definition of a symbol, __morestack_addr, containing the address. See
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/// comments in lib/Target/X86/X86FrameLowering.cpp for more details.
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bool UsesMorestackAddr;
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EHPersonality PersonalityTypeCache;
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@ -218,8 +212,7 @@ public:
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bool doInitialization(Module &) override;
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bool doFinalization(Module &) override;
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/// EndFunction - Discard function meta information.
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///
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/// Discard function meta information.
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void EndFunction();
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const MCContext &getContext() const { return Context; }
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@ -237,13 +230,12 @@ public:
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/// if none exists yet.
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MachineFunction &getMachineFunction(const Function &F);
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/// \brief Delete the MachineFunction \p MF and reset the link in the IR
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/// Function to Machine Function map.
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/// Delete the MachineFunction \p MF and reset the link in the IR Function to
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/// Machine Function map.
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void deleteMachineFunctionFor(Function &F);
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/// getInfo - Keep track of various per-function pieces of information for
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/// backends that would like to do so.
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///
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/// Keep track of various per-function pieces of information for backends
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/// that would like to do so.
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template<typename Ty>
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Ty &getObjFileInfo() {
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if (ObjFileMMI == nullptr)
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@ -256,8 +248,7 @@ public:
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return const_cast<MachineModuleInfo*>(this)->getObjFileInfo<Ty>();
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}
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/// hasDebugInfo - Returns true if valid debug info is present.
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///
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/// Returns true if valid debug info is present.
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bool hasDebugInfo() const { return DbgInfoAvailable; }
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void setDebugInfoAvailability(bool avail) { DbgInfoAvailable = avail; }
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@ -286,9 +277,9 @@ public:
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UsesMorestackAddr = b;
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}
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/// \brief Returns a reference to a list of cfi instructions in the current
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/// function's prologue. Used to construct frame maps for debug and exception
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/// handling comsumers.
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/// Returns a reference to a list of cfi instructions in the current
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/// function's prologue. Used to construct frame maps for debug and
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/// exception handling comsumers.
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const std::vector<MCCFIInstruction> &getFrameInstructions() const {
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return FrameInstructions;
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}
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@ -298,62 +289,56 @@ public:
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return FrameInstructions.size() - 1;
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}
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/// getAddrLabelSymbol - Return the symbol to be used for the specified basic
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/// block when its address is taken. This cannot be its normal LBB label
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/// because the block may be accessed outside its containing function.
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/// Return the symbol to be used for the specified basic block when its
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/// address is taken. This cannot be its normal LBB label because the block
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/// may be accessed outside its containing function.
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MCSymbol *getAddrLabelSymbol(const BasicBlock *BB) {
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return getAddrLabelSymbolToEmit(BB).front();
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}
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/// getAddrLabelSymbolToEmit - Return the symbol to be used for the specified
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/// basic block when its address is taken. If other blocks were RAUW'd to
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/// this one, we may have to emit them as well, return the whole set.
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/// Return the symbol to be used for the specified basic block when its
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/// address is taken. If other blocks were RAUW'd to this one, we may have
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/// to emit them as well, return the whole set.
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ArrayRef<MCSymbol *> getAddrLabelSymbolToEmit(const BasicBlock *BB);
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/// takeDeletedSymbolsForFunction - If the specified function has had any
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/// references to address-taken blocks generated, but the block got deleted,
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/// return the symbol now so we can emit it. This prevents emitting a
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/// reference to a symbol that has no definition.
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/// If the specified function has had any references to address-taken blocks
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/// generated, but the block got deleted, return the symbol now so we can
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/// emit it. This prevents emitting a reference to a symbol that has no
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/// definition.
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void takeDeletedSymbolsForFunction(const Function *F,
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std::vector<MCSymbol*> &Result);
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//===- EH ---------------------------------------------------------------===//
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/// getOrCreateLandingPadInfo - Find or create an LandingPadInfo for the
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/// specified MachineBasicBlock.
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/// Find or create an LandingPadInfo for the specified MachineBasicBlock.
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LandingPadInfo &getOrCreateLandingPadInfo(MachineBasicBlock *LandingPad);
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/// addInvoke - Provide the begin and end labels of an invoke style call and
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/// associate it with a try landing pad block.
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/// Provide the begin and end labels of an invoke style call and associate it
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/// with a try landing pad block.
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void addInvoke(MachineBasicBlock *LandingPad,
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MCSymbol *BeginLabel, MCSymbol *EndLabel);
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/// addLandingPad - Add a new panding pad. Returns the label ID for the
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/// landing pad entry.
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/// Add a new panding pad. Returns the label ID for the landing pad entry.
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MCSymbol *addLandingPad(MachineBasicBlock *LandingPad);
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/// addPersonality - Provide the personality function for the exception
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/// information.
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/// Provide the personality function for the exception information.
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void addPersonality(const Function *Personality);
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/// getPersonalities - Return array of personality functions ever seen.
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/// Return array of personality functions ever seen.
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const std::vector<const Function *>& getPersonalities() const {
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return Personalities;
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}
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/// addCatchTypeInfo - Provide the catch typeinfo for a landing pad.
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///
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/// Provide the catch typeinfo for a landing pad.
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void addCatchTypeInfo(MachineBasicBlock *LandingPad,
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ArrayRef<const GlobalValue *> TyInfo);
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/// addFilterTypeInfo - Provide the filter typeinfo for a landing pad.
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///
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/// Provide the filter typeinfo for a landing pad.
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void addFilterTypeInfo(MachineBasicBlock *LandingPad,
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ArrayRef<const GlobalValue *> TyInfo);
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/// addCleanup - Add a cleanup action for a landing pad.
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///
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/// Add a cleanup action for a landing pad.
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void addCleanup(MachineBasicBlock *LandingPad);
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void addSEHCatchHandler(MachineBasicBlock *LandingPad, const Function *Filter,
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@ -362,81 +347,71 @@ public:
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void addSEHCleanupHandler(MachineBasicBlock *LandingPad,
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const Function *Cleanup);
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/// getTypeIDFor - Return the type id for the specified typeinfo. This is
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/// function wide.
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/// Return the type id for the specified typeinfo. This is function wide.
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unsigned getTypeIDFor(const GlobalValue *TI);
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/// getFilterIDFor - Return the id of the filter encoded by TyIds. This is
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/// function wide.
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/// Return the id of the filter encoded by TyIds. This is function wide.
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int getFilterIDFor(std::vector<unsigned> &TyIds);
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/// TidyLandingPads - Remap landing pad labels and remove any deleted landing
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/// pads.
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/// Remap landing pad labels and remove any deleted landing pads.
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void TidyLandingPads(DenseMap<MCSymbol*, uintptr_t> *LPMap = nullptr);
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/// getLandingPads - Return a reference to the landing pad info for the
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/// current function.
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/// Return a reference to the landing pad info for the current function.
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const std::vector<LandingPadInfo> &getLandingPads() const {
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return LandingPads;
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}
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/// setCallSiteLandingPad - Map the landing pad's EH symbol to the call
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/// site indexes.
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/// Map the landing pad's EH symbol to the call site indexes.
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void setCallSiteLandingPad(MCSymbol *Sym, ArrayRef<unsigned> Sites);
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/// getCallSiteLandingPad - Get the call site indexes for a landing pad EH
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/// symbol.
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/// Get the call site indexes for a landing pad EH symbol.
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SmallVectorImpl<unsigned> &getCallSiteLandingPad(MCSymbol *Sym) {
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assert(hasCallSiteLandingPad(Sym) &&
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"missing call site number for landing pad!");
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return LPadToCallSiteMap[Sym];
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}
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/// hasCallSiteLandingPad - Return true if the landing pad Eh symbol has an
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/// associated call site.
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/// Return true if the landing pad Eh symbol has an associated call site.
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bool hasCallSiteLandingPad(MCSymbol *Sym) {
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return !LPadToCallSiteMap[Sym].empty();
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}
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/// setCallSiteBeginLabel - Map the begin label for a call site.
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/// Map the begin label for a call site.
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void setCallSiteBeginLabel(MCSymbol *BeginLabel, unsigned Site) {
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CallSiteMap[BeginLabel] = Site;
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}
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/// getCallSiteBeginLabel - Get the call site number for a begin label.
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/// Get the call site number for a begin label.
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unsigned getCallSiteBeginLabel(MCSymbol *BeginLabel) {
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assert(hasCallSiteBeginLabel(BeginLabel) &&
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"Missing call site number for EH_LABEL!");
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return CallSiteMap[BeginLabel];
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}
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/// hasCallSiteBeginLabel - Return true if the begin label has a call site
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/// number associated with it.
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/// Return true if the begin label has a call site number associated with it.
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bool hasCallSiteBeginLabel(MCSymbol *BeginLabel) {
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return CallSiteMap[BeginLabel] != 0;
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}
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/// setCurrentCallSite - Set the call site currently being processed.
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/// Set the call site currently being processed.
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void setCurrentCallSite(unsigned Site) { CurCallSite = Site; }
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/// getCurrentCallSite - Get the call site currently being processed, if any.
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/// return zero if none.
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/// Get the call site currently being processed, if any. return zero if
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/// none.
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unsigned getCurrentCallSite() { return CurCallSite; }
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/// getTypeInfos - Return a reference to the C++ typeinfo for the current
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/// function.
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/// Return a reference to the C++ typeinfo for the current function.
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const std::vector<const GlobalValue *> &getTypeInfos() const {
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return TypeInfos;
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}
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/// getFilterIds - Return a reference to the typeids encoding filters used in
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/// the current function.
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/// Return a reference to the typeids encoding filters used in the current
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/// function.
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const std::vector<unsigned> &getFilterIds() const {
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return FilterIds;
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}
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/// setVariableDbgInfo - Collect information used to emit debugging
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/// information of a variable.
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/// Collect information used to emit debugging information of a variable.
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void setVariableDbgInfo(const DILocalVariable *Var, const DIExpression *Expr,
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unsigned Slot, const DILocation *Loc) {
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VariableDbgInfos.emplace_back(Var, Expr, Slot, Loc);
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@ -57,7 +57,7 @@ public:
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class MMIAddrLabelMap {
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MCContext &Context;
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struct AddrLabelSymEntry {
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/// Symbols - The symbols for the label.
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/// The symbols for the label.
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TinyPtrVector<MCSymbol *> Symbols;
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Function *Fn; // The containing function of the BasicBlock.
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@ -66,14 +66,13 @@ class MMIAddrLabelMap {
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DenseMap<AssertingVH<BasicBlock>, AddrLabelSymEntry> AddrLabelSymbols;
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/// BBCallbacks - Callbacks for the BasicBlock's that we have entries for. We
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/// use this so we get notified if a block is deleted or RAUWd.
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/// Callbacks for the BasicBlock's that we have entries for. We use this so
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/// we get notified if a block is deleted or RAUWd.
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std::vector<MMIAddrLabelMapCallbackPtr> BBCallbacks;
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/// DeletedAddrLabelsNeedingEmission - This is a per-function list of symbols
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/// whose corresponding BasicBlock got deleted. These symbols need to be
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/// emitted at some point in the file, so AsmPrinter emits them after the
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/// function body.
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/// This is a per-function list of symbols whose corresponding BasicBlock got
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/// deleted. These symbols need to be emitted at some point in the file, so
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/// AsmPrinter emits them after the function body.
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DenseMap<AssertingVH<Function>, std::vector<MCSymbol*> >
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DeletedAddrLabelsNeedingEmission;
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public:
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@ -115,8 +114,7 @@ ArrayRef<MCSymbol *> MMIAddrLabelMap::getAddrLabelSymbolToEmit(BasicBlock *BB) {
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return Entry.Symbols;
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}
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/// takeDeletedSymbolsForFunction - If we have any deleted symbols for F, return
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/// them.
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/// If we have any deleted symbols for F, return them.
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void MMIAddrLabelMap::
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takeDeletedSymbolsForFunction(Function *F, std::vector<MCSymbol*> &Result) {
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DenseMap<AssertingVH<Function>, std::vector<MCSymbol*> >::iterator I =
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@ -229,8 +227,6 @@ bool MachineModuleInfo::doFinalization(Module &M) {
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return false;
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}
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/// EndFunction - Discard function meta information.
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///
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void MachineModuleInfo::EndFunction() {
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// Clean up frame info.
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FrameInstructions.clear();
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@ -250,9 +246,6 @@ void MachineModuleInfo::EndFunction() {
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//===- Address of Block Management ----------------------------------------===//
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/// getAddrLabelSymbolToEmit - Return the symbol to be used for the specified
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/// basic block when its address is taken. If other blocks were RAUW'd to
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/// this one, we may have to emit them as well, return the whole set.
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ArrayRef<MCSymbol *>
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MachineModuleInfo::getAddrLabelSymbolToEmit(const BasicBlock *BB) {
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// Lazily create AddrLabelSymbols.
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@ -261,11 +254,6 @@ MachineModuleInfo::getAddrLabelSymbolToEmit(const BasicBlock *BB) {
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return AddrLabelSymbols->getAddrLabelSymbolToEmit(const_cast<BasicBlock*>(BB));
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}
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/// takeDeletedSymbolsForFunction - If the specified function has had any
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/// references to address-taken blocks generated, but the block got deleted,
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/// return the symbol now so we can emit it. This prevents emitting a
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/// reference to a symbol that has no definition.
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void MachineModuleInfo::
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takeDeletedSymbolsForFunction(const Function *F,
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std::vector<MCSymbol*> &Result) {
|
||||
@ -277,8 +265,6 @@ takeDeletedSymbolsForFunction(const Function *F,
|
||||
|
||||
//===- EH -----------------------------------------------------------------===//
|
||||
|
||||
/// getOrCreateLandingPadInfo - Find or create an LandingPadInfo for the
|
||||
/// specified MachineBasicBlock.
|
||||
LandingPadInfo &MachineModuleInfo::getOrCreateLandingPadInfo
|
||||
(MachineBasicBlock *LandingPad) {
|
||||
unsigned N = LandingPads.size();
|
||||
@ -292,8 +278,6 @@ LandingPadInfo &MachineModuleInfo::getOrCreateLandingPadInfo
|
||||
return LandingPads[N];
|
||||
}
|
||||
|
||||
/// addInvoke - Provide the begin and end labels of an invoke style call and
|
||||
/// associate it with a try landing pad block.
|
||||
void MachineModuleInfo::addInvoke(MachineBasicBlock *LandingPad,
|
||||
MCSymbol *BeginLabel, MCSymbol *EndLabel) {
|
||||
LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
|
||||
@ -301,8 +285,6 @@ void MachineModuleInfo::addInvoke(MachineBasicBlock *LandingPad,
|
||||
LP.EndLabels.push_back(EndLabel);
|
||||
}
|
||||
|
||||
/// addLandingPad - Provide the label of a try LandingPad block.
|
||||
///
|
||||
MCSymbol *MachineModuleInfo::addLandingPad(MachineBasicBlock *LandingPad) {
|
||||
MCSymbol *LandingPadLabel = Context.createTempSymbol();
|
||||
LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
|
||||
@ -317,8 +299,6 @@ void MachineModuleInfo::addPersonality(const Function *Personality) {
|
||||
Personalities.push_back(Personality);
|
||||
}
|
||||
|
||||
/// addCatchTypeInfo - Provide the catch typeinfo for a landing pad.
|
||||
///
|
||||
void MachineModuleInfo::
|
||||
addCatchTypeInfo(MachineBasicBlock *LandingPad,
|
||||
ArrayRef<const GlobalValue *> TyInfo) {
|
||||
@ -327,8 +307,6 @@ addCatchTypeInfo(MachineBasicBlock *LandingPad,
|
||||
LP.TypeIds.push_back(getTypeIDFor(TyInfo[N - 1]));
|
||||
}
|
||||
|
||||
/// addFilterTypeInfo - Provide the filter typeinfo for a landing pad.
|
||||
///
|
||||
void MachineModuleInfo::
|
||||
addFilterTypeInfo(MachineBasicBlock *LandingPad,
|
||||
ArrayRef<const GlobalValue *> TyInfo) {
|
||||
@ -339,8 +317,6 @@ addFilterTypeInfo(MachineBasicBlock *LandingPad,
|
||||
LP.TypeIds.push_back(getFilterIDFor(IdsInFilter));
|
||||
}
|
||||
|
||||
/// addCleanup - Add a cleanup action for a landing pad.
|
||||
///
|
||||
void MachineModuleInfo::addCleanup(MachineBasicBlock *LandingPad) {
|
||||
LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
|
||||
LP.TypeIds.push_back(0);
|
||||
@ -365,8 +341,6 @@ void MachineModuleInfo::addSEHCleanupHandler(MachineBasicBlock *LandingPad,
|
||||
LP.SEHHandlers.push_back(Handler);
|
||||
}
|
||||
|
||||
/// TidyLandingPads - Remap landing pad labels and remove any deleted landing
|
||||
/// pads.
|
||||
void MachineModuleInfo::TidyLandingPads(DenseMap<MCSymbol*, uintptr_t> *LPMap) {
|
||||
for (unsigned i = 0; i != LandingPads.size(); ) {
|
||||
LandingPadInfo &LandingPad = LandingPads[i];
|
||||
@ -411,15 +385,11 @@ void MachineModuleInfo::TidyLandingPads(DenseMap<MCSymbol*, uintptr_t> *LPMap) {
|
||||
}
|
||||
}
|
||||
|
||||
/// setCallSiteLandingPad - Map the landing pad's EH symbol to the call site
|
||||
/// indexes.
|
||||
void MachineModuleInfo::setCallSiteLandingPad(MCSymbol *Sym,
|
||||
ArrayRef<unsigned> Sites) {
|
||||
LPadToCallSiteMap[Sym].append(Sites.begin(), Sites.end());
|
||||
}
|
||||
|
||||
/// getTypeIDFor - Return the type id for the specified typeinfo. This is
|
||||
/// function wide.
|
||||
unsigned MachineModuleInfo::getTypeIDFor(const GlobalValue *TI) {
|
||||
for (unsigned i = 0, N = TypeInfos.size(); i != N; ++i)
|
||||
if (TypeInfos[i] == TI) return i + 1;
|
||||
@ -428,8 +398,6 @@ unsigned MachineModuleInfo::getTypeIDFor(const GlobalValue *TI) {
|
||||
return TypeInfos.size();
|
||||
}
|
||||
|
||||
/// getFilterIDFor - Return the filter id for the specified typeinfos. This is
|
||||
/// function wide.
|
||||
int MachineModuleInfo::getFilterIDFor(std::vector<unsigned> &TyIds) {
|
||||
// If the new filter coincides with the tail of an existing filter, then
|
||||
// re-use the existing filter. Folding filters more than this requires
|
||||
|
||||
Loading…
Reference in New Issue
Block a user