CodeQL library for C/C++

codeql/cpp-all 2.1.1 (changelog, source)

Class PhiNode

An static single assignment (SSA) phi node.

This is either a normal phi node or a phi-read node.

Import path

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

Direct supertypes

DefinitionExt

Indirect supertypes

TDefinitionExt

Predicates

getAnInput	Gets a definition that is an input to this phi node.
hasInputFromBlock	Holds if the node at index `i` in `bb` is a last reference to SSA definition `def` of `sv`. The reference is last because it can reach this phi node, without passing through another read or write.
isPhiRead	Holds if this phi node is a phi-read node.

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 DefinitionExt
getBasicBlock	Gets the basic block to which this SSA definition belongs.	from DefinitionExt
getLocation	Gets the location of this SSA definition.	from DefinitionExt
getSourceVariable	Gets the source variable underlying this SSA definition.	from DefinitionExt
toString	Gets a textual representation of this SSA definition.	from DefinitionExt

Charpred