A sparse forward data-flow analysis for propagating SSA value lattices across the IR by implementing transfer functions for operations. More...
#include "mlir/Analysis/DataFlow/SparseAnalysis.h"
Inheritance diagram for mlir::dataflow::SparseForwardDataFlowAnalysis< StateT >:
Public Member Functions | |
| SparseForwardDataFlowAnalysis (DataFlowSolver &solver) | |
| virtual void | visitOperation (Operation *op, ArrayRef< const StateT * > operands, ArrayRef< StateT * > results)=0 |
| Visit an operation with the lattices of its operands. More... | |
| virtual void | visitNonControlFlowArguments (Operation *op, const RegionSuccessor &successor, ArrayRef< StateT * > argLattices, unsigned firstIndex) |
| Given an operation with possible region control-flow, the lattices of the operands, and a region successor, compute the lattice values for block arguments that are not accounted for by the branching control flow (ex. More... | |
| Public Member Functions inherited from mlir::dataflow::AbstractSparseForwardDataFlowAnalysis | |
| LogicalResult | initialize (Operation *top) override |
| Initialize the analysis by visiting every owner of an SSA value: all operations and blocks. More... | |
| LogicalResult | visit (ProgramPoint point) override |
| Visit a program point. More... | |
| Public Member Functions inherited from mlir::DataFlowAnalysis | |
| virtual | ~DataFlowAnalysis () |
| DataFlowAnalysis (DataFlowSolver &solver) | |
| Create an analysis with a reference to the parent solver. More... | |
Protected Member Functions | |
| StateT * | getLatticeElement (Value value) override |
| Get the lattice element for a value. More... | |
| const StateT * | getLatticeElementFor (ProgramPoint point, Value value) |
| Get the lattice element for a value and create a dependency on the provided program point. More... | |
| virtual void | setToEntryState (StateT *lattice)=0 |
| Set the given lattice element(s) at control flow entry point(s). More... | |
| void | setAllToEntryStates (ArrayRef< StateT * > lattices) |
| Protected Member Functions inherited from mlir::dataflow::AbstractSparseForwardDataFlowAnalysis | |
| AbstractSparseForwardDataFlowAnalysis (DataFlowSolver &solver) | |
| const AbstractSparseLattice * | getLatticeElementFor (ProgramPoint point, Value value) |
| Get a read-only lattice element for a value and add it as a dependency to a program point. More... | |
| void | setAllToEntryStates (ArrayRef< AbstractSparseLattice * > lattices) |
| void | join (AbstractSparseLattice *lhs, const AbstractSparseLattice &rhs) |
| Join the lattice element and propagate and update if it changed. More... | |
| Protected Member Functions inherited from mlir::DataFlowAnalysis | |
| void | addDependency (AnalysisState *state, ProgramPoint point) |
| Create a dependency between the given analysis state and program point on this analysis. More... | |
| void | propagateIfChanged (AnalysisState *state, ChangeResult changed) |
| Propagate an update to a state if it changed. More... | |
| template<typename PointT > | |
| void | registerPointKind () |
| Register a custom program point class. More... | |
| template<typename PointT , typename... Args> | |
| PointT * | getProgramPoint (Args &&...args) |
| Get or create a custom program point. More... | |
| template<typename StateT , typename PointT > | |
| StateT * | getOrCreate (PointT point) |
| Get the analysis state associated with the program point. More... | |
| template<typename StateT , typename PointT > | |
| const StateT * | getOrCreateFor (ProgramPoint dependent, PointT point) |
Get a read-only analysis state for the given point and create a dependency on dependent. More... | |
Detailed Description
template<typename StateT>
class mlir::dataflow::SparseForwardDataFlowAnalysis< StateT >
A sparse forward data-flow analysis for propagating SSA value lattices across the IR by implementing transfer functions for operations.
StateT is expected to be a subclass of AbstractSparseLattice.
Definition at line 259 of file SparseAnalysis.h.
Constructor & Destructor Documentation
◆ SparseForwardDataFlowAnalysis()
|
inlineexplicit |
Definition at line 266 of file SparseAnalysis.h.
Member Function Documentation
◆ getLatticeElement()
|
inlineoverrideprotectedvirtual |
Get the lattice element for a value.
Implements mlir::dataflow::AbstractSparseForwardDataFlowAnalysis.
Definition at line 291 of file SparseAnalysis.h.
◆ getLatticeElementFor()
|
inlineprotected |
Get the lattice element for a value and create a dependency on the provided program point.
Definition at line 297 of file SparseAnalysis.h.
References mlir::dataflow::AbstractSparseForwardDataFlowAnalysis::getLatticeElementFor().
◆ setAllToEntryStates()
|
inlineprotected |
Definition at line 305 of file SparseAnalysis.h.
References mlir::dataflow::AbstractSparseForwardDataFlowAnalysis::setAllToEntryStates().
◆ setToEntryState()
|
protectedpure virtual |
Set the given lattice element(s) at control flow entry point(s).
Implemented in mlir::dataflow::SparseConstantPropagation, and mlir::dataflow::IntegerRangeAnalysis.
◆ visitNonControlFlowArguments()
|
inlinevirtual |
Given an operation with possible region control-flow, the lattices of the operands, and a region successor, compute the lattice values for block arguments that are not accounted for by the branching control flow (ex.
the bounds of loops). By default, this method marks all such lattice elements as having reached a pessimistic fixpoint. firstIndex is the index of the first element of argLattices that is set by control-flow.
Reimplemented in mlir::dataflow::IntegerRangeAnalysis.
Definition at line 280 of file SparseAnalysis.h.
◆ visitOperation()
|
pure virtual |
Visit an operation with the lattices of its operands.
This function is expected to set the lattices of the operation's results.
Implemented in mlir::dataflow::SparseConstantPropagation, and mlir::dataflow::IntegerRangeAnalysis.
The documentation for this class was generated from the following file:
- include/mlir/Analysis/DataFlow/SparseAnalysis.h
