CodeQL library for C/C++

codeql/cpp-all 12.0.3 (changelog, source)

Class PhiNode

An static single assignment (SSA) phi node.

Import path

import semmle.code.cpp.ir.dataflow.internal.SsaImpl

Direct supertypes

Definition

Indirect supertypes

Predicates

getAnInput	Gets a definition that is an input to this phi node.
getFunction	Gets the enclosing declaration of this definition.
getIndirection	Gets the indirection of this definition.
hasInputFromBlock	Holds if `input` is an input to this phi node along the edge originating in `bb`.
isCertain	Holds if this definition is guaranteed to totally overwrite the buffer being written to.

Inherited predicates

definesAt	Holds if this SSA definition defines `v` at index `i` in basic block `bb`. Phi nodes are considered to be at index `-1`, while normal variable writes are at the index of the control flow node they wrap.	from Definition
getAUse	Gets an `Operand` that represents a use of this definition.	from Definition
getAnIndirectUse	Gets an `Operand` that represents an indirect use of this definition.	from Definition
getAnUltimateDefinition	Gets a definition that ultimately defines this SSA definition and is not itself a phi node.	from Definition
getBasicBlock	Gets the basic block to which this SSA definition belongs.	from Definition
getIndirectionIndex	Gets the indirection index of this definition.	from Definition
getLocation	Gets the location of this SSA definition.	from Definition
getSourceVariable	Gets the source variable underlying this SSA definition.	from Definition
getUnderlyingType	Gets the underlying type of the variable being defined by this definition.	from Definition
getUnspecifiedType	Gets the unspecified type of the variable being defined by this definition.	from Definition
getValue	INTERNAL: Do not use.	from Definition
isIndirectParameterDefinition	Holds if this definition defines the `indirectionIndex`’th indirection of parameter `p` upon entry into the enclosing function.	from Definition
isIndirectThisDefinition	Holds if this definition defines the implicit `*this` parameter (i.e., the indirection of the `this` parameter) upon entry into the enclosing member function.	from Definition
isLiveAtEndOfBlock	Holds if this SSA definition is live at the end of basic block `bb`. That is, this definition reaches the end of basic block `bb`, at which point it is still live, without crossing another SSA definition of the same source variable.	from Definition
isParameterDefinition	Holds if this definition defines the parameter `p` upon entry into the enclosing function.	from Definition
isThisDefinition	Holds if this definition defines the implicit `this` parameter upon entry into the enclosing member function.	from Definition
toString	Gets a textual representation of this SSA definition.	from Definition