TechLibraryPattern Struct Reference

Simple technology library encoded as a HWModuleOp. More...

Inheritance diagram for TechLibraryPattern:

Collaboration diagram for TechLibraryPattern:

Public Member Functions
	TechLibraryPattern (hw::HWModuleOp module, double area, SmallVector< SmallVector< DelayType, 2 >, 4 > delay, NPNClass npnClass)
StringRef	getPatternName () const override
	Get the name of this pattern. Used for debugging.
bool	match (const Cut &cut) const override
	Match the cut set against this library primitive.
bool	useTruthTableMatcher (SmallVectorImpl< NPNClass > &matchingNPNClasses) const override
	Enable truth table matching for this pattern.
llvm::FailureOr< Operation * >	rewrite (mlir::OpBuilder &builder, Cut &cut) const override
	Rewrite the cut set using this library primitive.
double	getArea () const override
	Get the area cost of this pattern.
DelayType	getDelay (unsigned inputIndex, unsigned outputIndex) const override
	Get the delay between specific input and output.
unsigned	getNumInputs () const
unsigned	getNumOutputs () const override
	Get the number of outputs this pattern produces.
LocationAttr	getLoc () const override
	Get location for this pattern(optional).
Public Member Functions inherited from circt::synth::CutRewritePattern
	CutRewritePattern (mlir::MLIRContext *context)
virtual	~CutRewritePattern ()=default
	Virtual destructor for base class.
mlir::MLIRContext *	getContext () const

Private Attributes
const double	area
const SmallVector< SmallVector< DelayType, 2 >, 4 >	delay
hw::HWModuleOp NPNClass	npnClass

Detailed Description

Simple technology library encoded as a HWModuleOp.

Definition at line 88 of file TechMapper.cpp.

Constructor & Destructor Documentation

TechLibraryPattern()

TechLibraryPattern::TechLibraryPattern ( hw::HWModuleOp  module, double  area, SmallVector< SmallVector< DelayType, 2 >, 4 >  delay, NPNClass  npnClass  )

inline

Definition at line 89 of file TechMapper.cpp.

Member Function Documentation

getArea()

double TechLibraryPattern::getArea ( ) const

inlineoverridevirtual

Get the area cost of this pattern.

Implements circt::synth::CutRewritePattern.

Definition at line 135 of file TechMapper.cpp.

References area.

getDelay()

DelayType TechLibraryPattern::getDelay ( unsigned  inputIndex, unsigned  outputIndex  ) const

inlineoverridevirtual

Get the delay between specific input and output.

NOTE: The input index is already permuted according to the pattern's input permutation, so it's not necessary to account for it here.

Implements circt::synth::CutRewritePattern.

Definition at line 137 of file TechMapper.cpp.

References delay.

getLoc()

LocationAttr TechLibraryPattern::getLoc ( ) const

inlineoverridevirtual

Get location for this pattern(optional).

Reimplemented from circt::synth::CutRewritePattern.

Definition at line 149 of file TechMapper.cpp.

getNumInputs()

unsigned TechLibraryPattern::getNumInputs ( ) const

inline

Definition at line 141 of file TechMapper.cpp.

getNumOutputs()

unsigned TechLibraryPattern::getNumOutputs ( ) const

inlineoverridevirtual

Get the number of outputs this pattern produces.

Implements circt::synth::CutRewritePattern.

Definition at line 145 of file TechMapper.cpp.

getPatternName()

StringRef TechLibraryPattern::getPatternName ( ) const

inlineoverridevirtual

Get the name of this pattern. Used for debugging.

Reimplemented from circt::synth::CutRewritePattern.

Definition at line 105 of file TechMapper.cpp.

match()

bool TechLibraryPattern::match ( const Cut &  cut ) const

inlineoverridevirtual

Match the cut set against this library primitive.

Implements circt::synth::CutRewritePattern.

Definition at line 111 of file TechMapper.cpp.

References circt::NPNClass::equivalentOtherThanPermutation(), circt::synth::Cut::getNPNClass(), and npnClass.

rewrite()

llvm::FailureOr< Operation * > TechLibraryPattern::rewrite ( mlir::OpBuilder &  builder, Cut &  cut  ) const

inlineoverridevirtual

Rewrite the cut set using this library primitive.

Implements circt::synth::CutRewritePattern.

Definition at line 123 of file TechMapper.cpp.

References circt::synth::Cut::getPermutatedInputs(), circt::synth::Cut::getRoot(), and npnClass.

useTruthTableMatcher()

bool TechLibraryPattern::useTruthTableMatcher ( SmallVectorImpl< NPNClass > &  matchingNPNClasses ) const

inlineoverridevirtual

Enable truth table matching for this pattern.

Reimplemented from circt::synth::CutRewritePattern.

Definition at line 116 of file TechMapper.cpp.

References npnClass.

Member Data Documentation

area

const double TechLibraryPattern::area

private

Definition at line 155 of file TechMapper.cpp.

Referenced by getArea().

delay

const SmallVector<SmallVector<DelayType, 2>, 4> TechLibraryPattern::delay

private

Definition at line 156 of file TechMapper.cpp.

Referenced by getDelay(), and synth.DataflowPath::to_flamegraph().

npnClass

hw::HWModuleOp NPNClass TechLibraryPattern::npnClass

private

Definition at line 158 of file TechMapper.cpp.

Referenced by match(), rewrite(), and useTruthTableMatcher().

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The documentation for this struct was generated from the following file:

• /home/runner/work/circt-www/circt-www/circt_src/lib/Dialect/Synth/Transforms/TechMapper.cpp