An AbstractAttribute for noreturn. More...
#include "llvm/Transforms/IPO/Attributor.h"
Inheritance diagram for llvm::AANoReturn:
Public Member Functions | |
| AANoReturn (const IRPosition &IRP, Attributor &A) | |
| bool | isAssumedNoReturn () const |
| Return true if the underlying object is assumed to never return. | |
| bool | isKnownNoReturn () const |
| Return true if the underlying object is known to never return. | |
| const std::string | getName () const override |
| See AbstractAttribute::getName() | |
| const char * | getIdAddr () const override |
| See AbstractAttribute::getIdAddr() | |
 Public Member Functions inherited from llvm::IRAttribute< Attribute::NoReturn, StateWrapper< BooleanState, AbstractAttribute >, AANoReturn > | |
| IRAttribute (const IRPosition &IRP) | |
| ChangeStatus | manifest (Attributor &A) override |
| See AbstractAttribute::manifest(...). | |
| Attribute::AttrKind | getAttrKind () const |
| Return the kind that identifies the abstract attribute implementation. | |
| virtual void | getDeducedAttributes (Attributor &A, LLVMContext &Ctx, SmallVectorImpl< Attribute > &Attrs) const |
Return the deduced attributes in Attrs. | |
| Public Member Functions inherited from llvm::StateWrapper< BooleanState, AbstractAttribute > | |
| StateWrapper (const IRPosition &IRP, Ts... Args) | |
| StateType & | getState () override |
| See AbstractAttribute::getState(...). | |
| const StateType & | getState () const override |
| See AbstractAttribute::getState(...). | |
| Public Member Functions inherited from llvm::AbstractAttribute | |
| AbstractAttribute (const IRPosition &IRP) | |
| virtual | ~AbstractAttribute ()=default |
| Virtual destructor. | |
| virtual void | initialize (Attributor &A) |
Initialize the state with the information in the Attributor A. | |
| virtual bool | isQueryAA () const |
| A query AA is always scheduled as long as we do updates because it does lazy computation that cannot be determined to be done from the outside. | |
| virtual StateType & | getState ()=0 |
| Return the internal abstract state for inspection. | |
| virtual const StateType & | getState () const =0 |
| const IRPosition & | getIRPosition () const |
| Return an IR position, see struct IRPosition. | |
| IRPosition & | getIRPosition () |
| void | print (raw_ostream &OS) const |
| Helper functions, for debug purposes only. | |
| void | print (Attributor *, raw_ostream &OS) const override |
| virtual void | printWithDeps (raw_ostream &OS) const |
| void | dump () const |
| virtual const std::string | getAsStr (Attributor *A) const =0 |
| This function should return the "summarized" assumed state as string. | |
| virtual const std::string | getName () const =0 |
| This function should return the name of the AbstractAttribute. | |
| virtual const char * | getIdAddr () const =0 |
| This function should return the address of the ID of the AbstractAttribute. | |
| Public Member Functions inherited from llvm::IRPosition | |
| IRPosition () | |
| Default constructor available to create invalid positions implicitly. | |
| bool | operator== (const IRPosition &RHS) const |
| bool | operator!= (const IRPosition &RHS) const |
| Value & | getAnchorValue () const |
| Return the value this abstract attribute is anchored with. | |
| Function * | getAssociatedFunction () const |
| Return the associated function, if any. | |
| Argument * | getAssociatedArgument () const |
| Return the associated argument, if any. | |
| bool | isFnInterfaceKind () const |
| Return true if the position refers to a function interface, that is the function scope, the function return, or an argument. | |
| bool | isFunctionScope () const |
| Return true if this is a function or call site position. | |
| Function * | getAnchorScope () const |
| Return the Function surrounding the anchor value. | |
| Instruction * | getCtxI () const |
| Return the context instruction, if any. | |
| Value & | getAssociatedValue () const |
| Return the value this abstract attribute is associated with. | |
| Type * | getAssociatedType () const |
| Return the type this abstract attribute is associated with. | |
| int | getCalleeArgNo () const |
| Return the callee argument number of the associated value if it is an argument or call site argument, otherwise a negative value. | |
| int | getCallSiteArgNo () const |
| Return the call site argument number of the associated value if it is an argument or call site argument, otherwise a negative value. | |
| unsigned | getAttrIdx () const |
| Return the index in the attribute list for this position. | |
| Value * | getAttrListAnchor () const |
| Return the value attributes are attached to. | |
| AttributeList | getAttrList () const |
| Return the attributes associated with this function or call site scope. | |
| void | setAttrList (const AttributeList &AttrList) const |
| Update the attributes associated with this function or call site scope. | |
| unsigned | getNumArgs () const |
| Return the number of arguments associated with this function or call site scope. | |
| Value * | getArg (unsigned ArgNo) const |
Return theargument ArgNo associated with this function or call site scope. | |
| Kind | getPositionKind () const |
| Return the associated position kind. | |
| bool | isAnyCallSitePosition () const |
| bool | isArgumentPosition () const |
| Return true if the position is an argument or call site argument. | |
| IRPosition | stripCallBaseContext () const |
| Return the same position without the call base context. | |
| const CallBaseContext * | getCallBaseContext () const |
| Get the call base context from the position. | |
| bool | hasCallBaseContext () const |
| Check if the position has any call base context. | |
| operator void * () const | |
| } | |
| Public Member Functions inherited from llvm::AADepGraphNode | |
| virtual | ~AADepGraphNode ()=default |
| aaiterator | begin () |
| aaiterator | end () |
| iterator | child_begin () |
| iterator | child_end () |
| void | print (raw_ostream &OS) const |
| virtual void | print (Attributor *, raw_ostream &OS) const |
| DepSetTy & | getDeps () |
| Public Member Functions inherited from llvm::BooleanState | |
| BooleanState ()=default | |
| BooleanState (base_t Assumed) | |
| void | setAssumed (bool Value) |
Set the assumed value to Value but never below the known one. | |
| void | setKnown (bool Value) |
Set the known and asssumed value to Value. | |
| bool | isAssumed () const |
| Return true if the state is assumed to hold. | |
| bool | isKnown () const |
| Return true if the state is known to hold. | |
| Public Member Functions inherited from llvm::IntegerStateBase< bool, true, false > | |
| IntegerStateBase ()=default | |
| IntegerStateBase (base_t Assumed) | |
| bool | isValidState () const override |
| See AbstractState::isValidState() NOTE: For now we simply pretend that the worst possible state is invalid. | |
| bool | isAtFixpoint () const override |
| See AbstractState::isAtFixpoint() | |
| ChangeStatus | indicateOptimisticFixpoint () override |
| See AbstractState::indicateOptimisticFixpoint(...) | |
| ChangeStatus | indicatePessimisticFixpoint () override |
| See AbstractState::indicatePessimisticFixpoint(...) | |
| base_t | getKnown () const |
| Return the known state encoding. | |
| base_t | getAssumed () const |
| Return the assumed state encoding. | |
| bool | operator== (const IntegerStateBase< base_t, BestState, WorstState > &R) const |
| Equality for IntegerStateBase. | |
| bool | operator!= (const IntegerStateBase< base_t, BestState, WorstState > &R) const |
| Inequality for IntegerStateBase. | |
| void | operator^= (const IntegerStateBase< base_t, BestState, WorstState > &R) |
"Clamp" this state with R. | |
| void | operator+= (const IntegerStateBase< base_t, BestState, WorstState > &R) |
"Clamp" this state with R. | |
| void | operator|= (const IntegerStateBase< base_t, BestState, WorstState > &R) |
| void | operator&= (const IntegerStateBase< base_t, BestState, WorstState > &R) |
| Public Member Functions inherited from llvm::AbstractState | |
| virtual | ~AbstractState ()=default |
| virtual bool | isValidState () const =0 |
| Return if this abstract state is in a valid state. | |
| virtual bool | isAtFixpoint () const =0 |
| Return if this abstract state is fixed, thus does not need to be updated if information changes as it cannot change itself. | |
| virtual ChangeStatus | indicateOptimisticFixpoint ()=0 |
| Indicate that the abstract state should converge to the optimistic state. | |
| virtual ChangeStatus | indicatePessimisticFixpoint ()=0 |
| Indicate that the abstract state should converge to the pessimistic state. | |
Static Public Member Functions | |
| static AANoReturn & | createForPosition (const IRPosition &IRP, Attributor &A) |
Create an abstract attribute view for the position IRP. | |
| static bool | classof (const AbstractAttribute *AA) |
This function should return true if the type of the AA is AANoReturn. | |
| Static Public Member Functions inherited from llvm::IRAttribute< Attribute::NoReturn, StateWrapper< BooleanState, AbstractAttribute >, AANoReturn > | |
| static bool | hasTrivialInitializer () |
| Most boolean IRAttribute AAs don't do anything non-trivial in their initializers while non-boolean ones often do. | |
| static bool | isImpliedByUndef () |
| Return true if the IR attribute(s) associated with this AA are implied for an undef value. | |
| static bool | isImpliedByPoison () |
| Return true if the IR attribute(s) associated with this AA are implied for an poison value. | |
| static bool | isImpliedByIR (Attributor &A, const IRPosition &IRP, Attribute::AttrKind ImpliedAttributeKind=AK, bool IgnoreSubsumingPositions=false) |
| Static Public Member Functions inherited from llvm::AbstractAttribute | |
| static bool | classof (const AADepGraphNode *DGN) |
This function is used to identify if an DGN is of type AbstractAttribute so that the dyn_cast and cast can use such information to cast an AADepGraphNode to an AbstractAttribute. | |
| static bool | hasTrivialInitializer () |
| Return false if this AA does anything non-trivial (hence not done by default) in its initializer. | |
| static bool | requiresCalleeForCallBase () |
| Return true if this AA requires a "callee" (or an associted function) for a call site positon. | |
| static bool | requiresNonAsmForCallBase () |
| Return true if this AA requires non-asm "callee" for a call site positon. | |
| static bool | requiresCallersForArgOrFunction () |
| Return true if this AA requires all callees for an argument or function positon. | |
| static bool | isValidIRPositionForInit (Attributor &A, const IRPosition &IRP) |
Return false if an AA should not be created for IRP. | |
| static bool | isValidIRPositionForUpdate (Attributor &A, const IRPosition &IRP) |
Return false if an AA should not be updated for IRP. | |
| Static Public Member Functions inherited from llvm::IRPosition | |
| static const IRPosition | value (const Value &V, const CallBaseContext *CBContext=nullptr) |
Create a position describing the value of V. | |
| static const IRPosition | inst (const Instruction &I, const CallBaseContext *CBContext=nullptr) |
Create a position describing the instruction I. | |
| static const IRPosition | function (const Function &F, const CallBaseContext *CBContext=nullptr) |
Create a position describing the function scope of F. | |
| static const IRPosition | returned (const Function &F, const CallBaseContext *CBContext=nullptr) |
Create a position describing the returned value of F. | |
| static const IRPosition | argument (const Argument &Arg, const CallBaseContext *CBContext=nullptr) |
Create a position describing the argument Arg. | |
| static const IRPosition | callsite_function (const CallBase &CB) |
Create a position describing the function scope of CB. | |
| static const IRPosition | callsite_returned (const CallBase &CB) |
Create a position describing the returned value of CB. | |
| static const IRPosition | callsite_argument (const CallBase &CB, unsigned ArgNo) |
Create a position describing the argument of CB at position ArgNo. | |
| static const IRPosition | callsite_argument (AbstractCallSite ACS, unsigned ArgNo) |
Create a position describing the argument of ACS at position ArgNo. | |
| static const IRPosition | function_scope (const IRPosition &IRP, const CallBaseContext *CBContext=nullptr) |
Create a position with function scope matching the "context" of IRP. | |
| Static Public Member Functions inherited from llvm::IntegerStateBase< bool, true, false > | |
| static constexpr base_t | getBestState () |
| Return the best possible representable state. | |
| static constexpr base_t | getBestState (const IntegerStateBase &) |
| static constexpr base_t | getWorstState () |
| Return the worst possible representable state. | |
| static constexpr base_t | getWorstState (const IntegerStateBase &) |
Static Public Attributes | |
| static const char | ID = 0 |
| Unique ID (due to the unique address) | |
| Static Public Attributes inherited from llvm::IRAttribute< Attribute::NoReturn, StateWrapper< BooleanState, AbstractAttribute >, AANoReturn > | |
| static constexpr Attribute::AttrKind | IRAttributeKind |
| Compile time access to the IR attribute kind. | |
| Static Public Attributes inherited from llvm::AbstractAttribute | |
| static constexpr Attribute::AttrKind | IRAttributeKind = Attribute::None |
| Compile time access to the IR attribute kind. | |
| Static Public Attributes inherited from llvm::IRPosition | |
| static const IRPosition | EmptyKey |
| Special DenseMap key values. | |
| static const IRPosition | TombstoneKey |
Additional Inherited Members | |
| Public Types inherited from llvm::StateWrapper< BooleanState, AbstractAttribute > | |
| using | StateType = BooleanState |
| Provide static access to the type of the state. | |
| Public Types inherited from llvm::AbstractAttribute | |
| using | StateType = AbstractState |
| Public Types inherited from llvm::IRPosition | |
| enum | Kind : char { IRP_INVALID , IRP_FLOAT , IRP_RETURNED , IRP_CALL_SITE_RETURNED , IRP_FUNCTION , IRP_CALL_SITE , IRP_ARGUMENT , IRP_CALL_SITE_ARGUMENT } |
| The positions we distinguish in the IR. More... | |
| using | CallBaseContext = CallBase |
| Public Types inherited from llvm::AADepGraphNode | |
| using | DepTy = PointerIntPair< AADepGraphNode *, 1 > |
| using | DepSetTy = SmallSetVector< DepTy, 2 > |
| using | iterator = mapped_iterator< DepSetTy::iterator, decltype(&DepGetVal)> |
| using | aaiterator = mapped_iterator< DepSetTy::iterator, decltype(&DepGetValAA)> |
| Public Types inherited from llvm::BooleanState | |
| using | super = IntegerStateBase< bool, true, false > |
| using | base_t = IntegerStateBase::base_t |
| Public Types inherited from llvm::IntegerStateBase< bool, true, false > | |
| using | base_t = bool |
| Protected Member Functions inherited from llvm::AbstractAttribute | |
| ChangeStatus | update (Attributor &A) |
| Hook for the Attributor to trigger an update of the internal state. | |
| virtual ChangeStatus | manifest (Attributor &A) |
| Hook for the Attributor to trigger the manifestation of the information represented by the abstract attribute in the LLVM-IR. | |
| virtual void | trackStatistics () const =0 |
| Hook to enable custom statistic tracking, called after manifest that resulted in a change if statistics are enabled. | |
| virtual ChangeStatus | updateImpl (Attributor &A)=0 |
| The actual update/transfer function which has to be implemented by the derived classes. | |
| Protected Member Functions inherited from llvm::AADepGraphNode | |
| operator AbstractAttribute * () | |
| Protected Member Functions inherited from llvm::IntegerStateBase< bool, true, false > | |
| virtual void | handleNewAssumedValue (base_t Value)=0 |
Handle a new assumed value Value. Subtype dependent. | |
| virtual void | handleNewKnownValue (base_t Value)=0 |
Handle a new known value Value. Subtype dependent. | |
| virtual void | joinOR (base_t AssumedValue, base_t KnownValue)=0 |
Handle a value Value. Subtype dependent. | |
| virtual void | joinAND (base_t AssumedValue, base_t KnownValue)=0 |
Handle a new assumed value Value. Subtype dependent. | |
| Static Protected Member Functions inherited from llvm::AADepGraphNode | |
| static AADepGraphNode * | DepGetVal (const DepTy &DT) |
| static AbstractAttribute * | DepGetValAA (const DepTy &DT) |
| Protected Attributes inherited from llvm::AADepGraphNode | |
| DepSetTy | Deps |
| Set of dependency graph nodes which should be updated if this one is updated. | |
| Protected Attributes inherited from llvm::IntegerStateBase< bool, true, false > | |
| base_t | Known |
| The known state encoding in an integer of type base_t. | |
| base_t | Assumed |
| The assumed state encoding in an integer of type base_t. | |
Detailed Description
An AbstractAttribute for noreturn.
Definition at line 3936 of file Attributor.h.
Constructor & Destructor Documentation
◆ AANoReturn()
|
inline |
Definition at line 3940 of file Attributor.h.
Member Function Documentation
◆ classof()
|
inlinestatic |
This function should return true if the type of the AA is AANoReturn.
Definition at line 3958 of file Attributor.h.
References llvm::AbstractAttribute::getIdAddr().
◆ createForPosition()
|
static |
Create an abstract attribute view for the position IRP.
◆ getIdAddr()
See AbstractAttribute::getIdAddr()
Implements llvm::AbstractAttribute.
Definition at line 3955 of file Attributor.h.
References ID.
◆ getName()
|
inlineoverridevirtual |
See AbstractAttribute::getName()
Implements llvm::AbstractAttribute.
Definition at line 3952 of file Attributor.h.
◆ isAssumedNoReturn()
|
inline |
Return true if the underlying object is assumed to never return.
Definition at line 3943 of file Attributor.h.
References llvm::IntegerStateBase< bool, true, false >::getAssumed().
◆ isKnownNoReturn()
|
inline |
Return true if the underlying object is known to never return.
Definition at line 3946 of file Attributor.h.
References llvm::IntegerStateBase< bool, true, false >::getKnown().
Member Data Documentation
◆ ID
Unique ID (due to the unique address)
Definition at line 3963 of file Attributor.h.
Referenced by getIdAddr(), and runAttributorLightOnFunctions().
The documentation for this struct was generated from the following files:
- include/llvm/Transforms/IPO/Attributor.h
- lib/Transforms/IPO/AttributorAttributes.cpp
