llvm::DAGTypeLegalizer Class Reference

#include <LegalizeTypes.h>

Public Types
enum	NodeIdFlags { ReadyToProcess = 0, NewNode = -1, Unanalyzed = -2, Processed = -3 }

Public Member Functions
	DAGTypeLegalizer (SelectionDAG &dag)
bool	run ()
void	NoteDeletion (SDNode *Old, SDNode *New)
SelectionDAG &	getDAG () const

Detailed Description

DAGTypeLegalizer - This takes an arbitrary SelectionDAG as input and hacks on it until only value types the target machine can handle are left. This involves promoting small sizes to large sizes or splitting up large values into small values.

Definition at line 35 of file LegalizeTypes.h.

Member Enumeration Documentation

enum llvm::DAGTypeLegalizer::NodeIdFlags

Enumerator
ReadyToProcess	ReadyToProcess - All operands have been processed, so this node is ready to be handled.
NewNode	NewNode - This is a new node, not before seen, that was created in the process of legalizing some other node.
Unanalyzed	Unanalyzed - This node's ID needs to be set to the number of its unprocessed operands.
Processed	Processed - This is a node that has already been processed.

Definition at line 41 of file LegalizeTypes.h.

Constructor & Destructor Documentation

llvm::DAGTypeLegalizer::DAGTypeLegalizer ( SelectionDAG &  dag )

inlineexplicit

Definition at line 123 of file LegalizeTypes.h.

References llvm::MVT::LAST_VALUETYPE, and llvm::MVT::MAX_ALLOWED_VALUETYPE.

Member Function Documentation

SelectionDAG& llvm::DAGTypeLegalizer::getDAG ( ) const

inline

Definition at line 142 of file LegalizeTypes.h.

void llvm::DAGTypeLegalizer::NoteDeletion ( SDNode *  Old, SDNode *  New  )

inline

Definition at line 135 of file LegalizeTypes.h.

References llvm::SDNode::getNumValues().

bool DAGTypeLegalizer::run

(

)

run - This is the main entry point for the type legalizer. This does a top-down traversal of the dag, legalizing types as it goes. Returns "true" if it made any changes.

Definition at line 179 of file LegalizeTypes.cpp.

References llvm::SelectionDAG::allnodes_begin(), llvm::SelectionDAG::allnodes_end(), llvm::dbgs(), DEBUG, llvm::NVPTXISD::Dummy, llvm::SDNode::dump(), EnableExpensiveChecks, llvm::SDValue::getNode(), llvm::SDNode::getNodeId(), llvm::SDNode::getNumOperands(), llvm::SDNode::getNumValues(), llvm::SDNode::getOperand(), llvm::SelectionDAG::getRoot(), llvm::SDValue::getValueType(), llvm::SDNode::getValueType(), I, llvm_unreachable, NewNode, Processed, ReadyToProcess, llvm::SelectionDAG::RemoveDeadNodes(), llvm::SDNode::setNodeId(), llvm::SelectionDAG::setRoot(), llvm::TargetLoweringBase::TypeExpandFloat, llvm::TargetLoweringBase::TypeExpandInteger, llvm::TargetLoweringBase::TypeLegal, llvm::TargetLoweringBase::TypePromoteInteger, llvm::TargetLoweringBase::TypeScalarizeVector, llvm::TargetLoweringBase::TypeSoftenFloat, llvm::TargetLoweringBase::TypeSplitVector, llvm::TargetLoweringBase::TypeWidenVector, Unanalyzed, llvm::SDNode::use_begin(), and llvm::SDNode::use_end().

Referenced by llvm::SelectionDAG::LegalizeTypes().

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

• LegalizeTypes.h
• LegalizeFloatTypes.cpp
• LegalizeIntegerTypes.cpp
• LegalizeTypes.cpp
• LegalizeTypesGeneric.cpp
• LegalizeVectorTypes.cpp