llvm::UndefValue Class Reference
#include <Constants.h>
Public Member Functions | |
| virtual bool | isNullValue () const |
| virtual void | destroyConstant () |
Static Public Member Functions | |
| static UndefValue * | get (const Type *T) |
| static bool | classof (const UndefValue *) |
| Methods for support type inquiry through isa, cast, and dyn_cast:. | |
| static bool | classof (const Value *V) |
Protected Member Functions | |
| UndefValue (const Type *T) | |
| void * | operator new (size_t s) |
Friends | |
| struct | ConstantCreator< UndefValue, Type, char > |
Detailed Description
UndefValue - 'undef' values are things that do not have specified contents. These are used for a variety of purposes, including global variable initializers and operands to instructions. 'undef' values can occur with any type.Definition at line 785 of file Constants.h.
Constructor & Destructor Documentation
| llvm::UndefValue::UndefValue | ( | const Type * | T | ) | [inline, explicit, protected] |
Definition at line 790 of file Constants.h.
Member Function Documentation
| void* llvm::UndefValue::operator new | ( | size_t | s | ) | [inline, protected] |
| UndefValue * UndefValue::get | ( | const Type * | T | ) | [static] |
get() - Static factory methods - Return an 'undef' object of the specified type.
Definition at line 1629 of file Constants.cpp.
Referenced by BuildSubAggregate(), ChangeToUnreachable(), llvm::CloneAndPruneFunctionInto(), llvm::ConstantFoldBinaryInstruction(), llvm::ConstantFoldCastInstruction(), llvm::ConstantFoldCompareInstruction(), llvm::ConstantFoldExtractElementInstruction(), llvm::ConstantFoldExtractValueInstruction(), llvm::ConstantFoldGetElementPtr(), llvm::ConstantFoldInsertElementInstruction(), llvm::ConstantFoldInsertValueInstruction(), llvm::ConstantFoldInstruction(), llvm::ConstantFoldLoadThroughGEPConstantExpr(), llvm::ConstantFoldShuffleVectorInstruction(), llvm::ConvertConstantType< UndefValue, Type >::convert(), llvm::IRBuilder< preserveNames, T >::CreateAggregateRet(), llvm::DeleteDeadBlock(), llvm::FindInsertedValue(), llvm::FoldSingleEntryPHINodes(), llvm::ConstantVector::get(), getAggregateConstantElement(), GetVectorElement(), llvm::Constant::getVectorElements(), llvm::ConstantExpr::getVFCmp(), llvm::ConstantExpr::getVICmp(), llvm::PHINode::hasConstantValue(), llvm::InlineFunction(), llvm::MergeBasicBlockIntoOnlyPred(), OptimizeGlobalAddressOfMalloc(), llvm::PHINode::removeIncomingValue(), llvm::BasicBlock::removePredecessor(), llvm::SplitBlockPredecessors(), and llvm::UpgradeIntrinsicCall().
| virtual bool llvm::UndefValue::isNullValue | ( | ) | const [inline, virtual] |
isNullValue - Return true if this is the value that would be returned by getNullValue.
Implements llvm::Constant.
Definition at line 804 of file Constants.h.
| void UndefValue::destroyConstant | ( | ) | [virtual] |
destroyConstant - Called if some element of this constant is no longer valid. At this point only other constants may be on the use_list for this constant. Any constants on our Use list must also be destroy'd. The implementation must be sure to remove the constant from the list of available cached constants. Implementations should call destroyConstantImpl as the last thing they do, to destroy all users and delete this.
Reimplemented from llvm::Constant.
Definition at line 1635 of file Constants.cpp.
References llvm::Constant::destroyConstantImpl().
Referenced by llvm::ConvertConstantType< UndefValue, Type >::convert().
| static bool llvm::UndefValue::classof | ( | const UndefValue * | ) | [inline, static] |
Methods for support type inquiry through isa, cast, and dyn_cast:.
Definition at line 809 of file Constants.h.
| static bool llvm::UndefValue::classof | ( | const Value * | V | ) | [inline, static] |
Reimplemented from llvm::Constant.
Definition at line 810 of file Constants.h.
References llvm::Value::getValueID().
Friends And Related Function Documentation
friend struct ConstantCreator< UndefValue, Type, char > [friend] |
Definition at line 786 of file Constants.h.
The documentation for this class was generated from the following files:
1.5.6