LLVM  7.0.0svn
Public Member Functions | Protected Types | Protected Member Functions | Protected Attributes | List of all members
llvm::Init Class Referenceabstract

#include "llvm/TableGen/Record.h"

Inheritance diagram for llvm::Init:
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Collaboration diagram for llvm::Init:
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Public Member Functions

InitKind getKind () const
 
 Init (const Init &)=delete
 
Initoperator= (const Init &)=delete
 
virtual ~Init ()=default
 
virtual bool isComplete () const
 This virtual method should be overridden by values that may not be completely specified yet. More...
 
virtual bool isConcrete () const
 Is this a concrete and fully resolved value without any references or stuck operations? Unset values are concrete. More...
 
void print (raw_ostream &OS) const
 Print out this value. More...
 
virtual std::string getAsString () const =0
 Convert this value to a string form. More...
 
virtual std::string getAsUnquotedString () const
 Convert this value to a string form, without adding quote markers. More...
 
void dump () const
 Debugging method that may be called through a debugger, just invokes print on stderr. More...
 
virtual InitgetCastTo (RecTy *Ty) const =0
 If this initializer is convertible to Ty, return an initializer whose type is-a Ty, generating a !cast operation if required. More...
 
virtual InitconvertInitializerTo (RecTy *Ty) const =0
 Convert to an initializer whose type is-a Ty, or return nullptr if this is not possible (this can happen if the initializer's type is convertible to Ty, but there are unresolved references). More...
 
virtual InitconvertInitializerBitRange (ArrayRef< unsigned > Bits) const
 This method is used to implement the bitrange selection operator. More...
 
virtual InitconvertInitListSlice (ArrayRef< unsigned > Elements) const
 This method is used to implement the list slice selection operator. More...
 
virtual RecTygetFieldType (StringInit *FieldName) const
 This method is used to implement the FieldInit class. More...
 
virtual InitresolveReferences (Resolver &R) const
 This method is used by classes that refer to other variables which may not be defined at the time the expression is formed. More...
 
virtual InitgetBit (unsigned Bit) const =0
 This method is used to return the initializer for the specified bit. More...
 

Protected Types

enum  InitKind : uint8_t {
  IK_First, IK_FirstTypedInit, IK_BitInit, IK_BitsInit,
  IK_CodeInit, IK_DagInit, IK_DefInit, IK_FieldInit,
  IK_IntInit, IK_ListInit, IK_FirstOpInit, IK_BinOpInit,
  IK_TernOpInit, IK_UnOpInit, IK_LastOpInit, IK_FoldOpInit,
  IK_IsAOpInit, IK_StringInit, IK_VarInit, IK_VarListElementInit,
  IK_VarBitInit, IK_VarDefInit, IK_LastTypedInit, IK_UnsetInit
}
 Discriminator enum (for isa<>, dyn_cast<>, et al.) More...
 

Protected Member Functions

 Init (InitKind K, uint8_t Opc=0)
 

Protected Attributes

uint8_t Opc
 

Detailed Description

Definition at line 288 of file Record.h.

Member Enumeration Documentation

◆ InitKind

enum llvm::Init::InitKind : uint8_t
protected

Discriminator enum (for isa<>, dyn_cast<>, et al.)

This enum is laid out by a preorder traversal of the inheritance hierarchy, and does not contain an entry for abstract classes, as per the recommendation in docs/HowToSetUpLLVMStyleRTTI.rst.

We also explicitly include "first" and "last" values for each interior node of the inheritance tree, to make it easier to read the corresponding classof().

We could pack these a bit tighter by not having the IK_FirstXXXInit and IK_LastXXXInit be their own values, but that would degrade readability for really no benefit.

Enumerator
IK_First 
IK_FirstTypedInit 
IK_BitInit 
IK_BitsInit 
IK_CodeInit 
IK_DagInit 
IK_DefInit 
IK_FieldInit 
IK_IntInit 
IK_ListInit 
IK_FirstOpInit 
IK_BinOpInit 
IK_TernOpInit 
IK_UnOpInit 
IK_LastOpInit 
IK_FoldOpInit 
IK_IsAOpInit 
IK_StringInit 
IK_VarInit 
IK_VarListElementInit 
IK_VarBitInit 
IK_VarDefInit 
IK_LastTypedInit 
IK_UnsetInit 

Definition at line 303 of file Record.h.

Constructor & Destructor Documentation

◆ Init() [1/2]

llvm::Init::Init ( InitKind  K,
uint8_t  Opc = 0 
)
inlineexplicitprotected

Definition at line 343 of file Record.h.

◆ Init() [2/2]

llvm::Init::Init ( const Init )
delete

◆ ~Init()

virtual llvm::Init::~Init ( )
virtualdefault

Member Function Documentation

◆ convertInitializerBitRange()

virtual Init* llvm::Init::convertInitializerBitRange ( ArrayRef< unsigned Bits) const
inlinevirtual

This method is used to implement the bitrange selection operator.

Given an initializer, it selects the specified bits out, returning them as a new init of bits type. If it is not legal to use the bit subscript operator on this initializer, return null.

Reimplemented in llvm::IntInit, llvm::BitsInit, and llvm::TypedInit.

Definition at line 387 of file Record.h.

Referenced by isObjectStart().

◆ convertInitializerTo()

virtual Init* llvm::Init::convertInitializerTo ( RecTy Ty) const
pure virtual

Convert to an initializer whose type is-a Ty, or return nullptr if this is not possible (this can happen if the initializer's type is convertible to Ty, but there are unresolved references).

Implemented in llvm::DefInit, llvm::ListInit, llvm::CodeInit, llvm::StringInit, llvm::IntInit, llvm::BitsInit, llvm::BitInit, llvm::UnsetInit, and llvm::TypedInit.

Referenced by llvm::UnOpInit::Fold(), and llvm::TernOpInit::resolveReferences().

◆ convertInitListSlice()

virtual Init* llvm::Init::convertInitListSlice ( ArrayRef< unsigned Elements) const
inlinevirtual

This method is used to implement the list slice selection operator.

Given an initializer, it selects the specified list elements, returning them as a new init of list type. If it is not legal to take a slice of this, return null.

Reimplemented in llvm::ListInit, and llvm::TypedInit.

Definition at line 395 of file Record.h.

Referenced by isObjectStart().

◆ dump()

LLVM_DUMP_METHOD void Init::dump ( ) const

Debugging method that may be called through a debugger, just invokes print on stderr.

Definition at line 289 of file Record.cpp.

References llvm::errs(), and llvm::RecTy::print().

◆ getAsString()

virtual std::string llvm::Init::getAsString ( ) const
pure virtual

◆ getAsUnquotedString()

virtual std::string llvm::Init::getAsUnquotedString ( ) const
inlinevirtual

Convert this value to a string form, without adding quote markers.

This primaruly affects StringInits where we will not surround the string value with quotes.

Reimplemented in llvm::CodeInit, and llvm::StringInit.

Definition at line 367 of file Record.h.

References llvm::RecTy::dump(), and llvm::RecTy::getAsString().

Referenced by QualifiedNameOfImplicitName(), and llvm::Record::resolveReferences().

◆ getBit()

virtual Init* llvm::Init::getBit ( unsigned  Bit) const
pure virtual

◆ getCastTo()

virtual Init* llvm::Init::getCastTo ( RecTy Ty) const
pure virtual

If this initializer is convertible to Ty, return an initializer whose type is-a Ty, generating a !cast operation if required.

Otherwise, return nullptr.

Implemented in llvm::UnsetInit, and llvm::TypedInit.

Referenced by QualifiedNameOfImplicitName(), and llvm::RecordVal::setValue().

◆ getFieldType()

virtual RecTy* llvm::Init::getFieldType ( StringInit FieldName) const
inlinevirtual

This method is used to implement the FieldInit class.

Implementors of this method should return the type of the named field if they are of record type.

Reimplemented in llvm::DefInit, and llvm::TypedInit.

Definition at line 402 of file Record.h.

Referenced by isObjectStart().

◆ getKind()

InitKind llvm::Init::getKind ( ) const
inline

◆ isComplete()

virtual bool llvm::Init::isComplete ( ) const
inlinevirtual

This virtual method should be overridden by values that may not be completely specified yet.

Reimplemented in llvm::IsAOpInit, llvm::FoldOpInit, llvm::TernOpInit, llvm::BitsInit, and llvm::UnsetInit.

Definition at line 352 of file Record.h.

Referenced by llvm::TernOpInit::isComplete(), isObjectStart(), and QualifiedNameOfImplicitName().

◆ isConcrete()

virtual bool llvm::Init::isConcrete ( ) const
inlinevirtual

Is this a concrete and fully resolved value without any references or stuck operations? Unset values are concrete.

Reimplemented in llvm::DagInit, llvm::DefInit, llvm::ListInit, llvm::CodeInit, llvm::StringInit, llvm::IntInit, llvm::BitsInit, llvm::BitInit, and llvm::UnsetInit.

Definition at line 356 of file Record.h.

Referenced by checkBitsConcrete(), and llvm::ListInit::isConcrete().

◆ operator=()

Init& llvm::Init::operator= ( const Init )
delete

◆ print()

void llvm::Init::print ( raw_ostream OS) const
inline

Print out this value.

Definition at line 359 of file Record.h.

References llvm::RecTy::getAsString().

Referenced by llvm::operator<<().

◆ resolveReferences()

virtual Init* llvm::Init::resolveReferences ( Resolver R) const
inlinevirtual

Member Data Documentation

◆ Opc

uint8_t llvm::Init::Opc
protected

Definition at line 334 of file Record.h.


The documentation for this class was generated from the following files: