SCCP.cpp File Reference

#include "mlir/Transforms/Passes.h"
#include "mlir/Analysis/DataFlow/ConstantPropagationAnalysis.h"
#include "mlir/Analysis/DataFlow/DeadCodeAnalysis.h"
#include "mlir/IR/Builders.h"
#include "mlir/IR/Dialect.h"
#include "mlir/Interfaces/SideEffectInterfaces.h"
#include "mlir/Pass/Pass.h"
#include "mlir/Transforms/FoldUtils.h"
#include "mlir/Transforms/Passes.h.inc"

Go to the source code of this file.

Namespaces
	mlir
	Include the generated interface declarations.

Macros
#define	GEN_PASS_DEF_SCCP

Functions
static LogicalResult	replaceWithConstant (DataFlowSolver &solver, OpBuilder &builder, OperationFolder &folder, Value value)
	Replace the given value with a constant if the corresponding lattice represents a constant. More...
static void	rewrite (DataFlowSolver &solver, MLIRContext *context, MutableArrayRef< Region > initialRegions)
	Rewrite the given regions using the computing analysis. More...

Macro Definition Documentation

GEN_PASS_DEF_SCCP

#define GEN_PASS_DEF_SCCP

Definition at line 28 of file SCCP.cpp.

Function Documentation

replaceWithConstant()

static LogicalResult replaceWithConstant ( DataFlowSolver &  solver, OpBuilder &  builder, OperationFolder &  folder, Value  value  )

static

Replace the given value with a constant if the corresponding lattice represents a constant.

Returns success if the value was replaced, failure otherwise.

Definition at line 42 of file SCCP.cpp.

References mlir::dataflow::ConstantValue::getConstantDialect(), mlir::dataflow::ConstantValue::getConstantValue(), mlir::OpBuilder::getInsertionBlock(), mlir::OperationFolder::getOrCreateConstant(), mlir::Value::getType(), mlir::DataFlowSolver::lookupState(), and mlir::Value::replaceAllUsesWith().

Referenced by rewrite().

rewrite()

static void rewrite ( DataFlowSolver &  solver, MLIRContext *  context, MutableArrayRef< Region >  initialRegions  )

static

Rewrite the given regions using the computing analysis.

This replaces the uses of all values that have been computed to be constant, and erases as many newly dead operations.

Definition at line 67 of file SCCP.cpp.

References mlir::Block::getArguments(), replaceWithConstant(), mlir::OpBuilder::setInsertionPoint(), mlir::OpBuilder::setInsertionPointToStart(), and mlir::wouldOpBeTriviallyDead().

Referenced by mlir::detail::ConversionPatternRewriterImpl::applyRewrites(), mlir::ConversionPatternRewriter::cancelOpModification(), checkAndNestUnderRewriteOp(), legalizeUnresolvedMaterialization(), and mlir::detail::ConversionPatternRewriterImpl::undoRewrites().