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//===- BufferizationTransformOps.h - Bufferization transform ops ----------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "mlir/Dialect/Bufferization/TransformOps/BufferizationTransformOps.h"
#include "mlir/Dialect/Bufferization/IR/Bufferization.h"
#include "mlir/Dialect/Bufferization/Transforms/OneShotAnalysis.h"
#include "mlir/Dialect/Bufferization/Transforms/OneShotModuleBufferize.h"
#include "mlir/Dialect/Bufferization/Transforms/Transforms.h"
#include "mlir/Dialect/Linalg/IR/Linalg.h"
#include "mlir/Dialect/MemRef/IR/MemRef.h"
#include "mlir/Dialect/Tensor/IR/Tensor.h"
#include "mlir/Dialect/Transform/IR/TransformDialect.h"
#include "mlir/IR/FunctionInterfaces.h"
using namespace mlir;
using namespace mlir::bufferization;
using namespace mlir::transform;
//===----------------------------------------------------------------------===//
// BufferLoopHoistingOp
//===----------------------------------------------------------------------===//
DiagnosedSilenceableFailure transform::BufferLoopHoistingOp::applyToOne(
TransformRewriter &rewriter, Operation *target,
ApplyToEachResultList &results, TransformState &state) {
bufferization::hoistBuffersFromLoops(target);
return DiagnosedSilenceableFailure::success();
}
void transform::BufferLoopHoistingOp::getEffects(
SmallVectorImpl<MemoryEffects::EffectInstance> &effects) {
onlyReadsHandle(getTarget(), effects);
modifiesPayload(effects);
}
//===----------------------------------------------------------------------===//
// OneShotBufferizeOp
//===----------------------------------------------------------------------===//
LogicalResult transform::OneShotBufferizeOp::verify() {
if (getMemcpyOp() != "memref.copy" && getMemcpyOp() != "linalg.copy")
return emitOpError() << "unsupported memcpy op";
return success();
}
DiagnosedSilenceableFailure
transform::OneShotBufferizeOp::apply(transform::TransformRewriter &rewriter,
TransformResults &transformResults,
TransformState &state) {
OneShotBufferizationOptions options;
options.allowReturnAllocs = getAllowReturnAllocs();
options.allowUnknownOps = getAllowUnknownOps();
options.bufferizeFunctionBoundaries = getBufferizeFunctionBoundaries();
options.createDeallocs = getCreateDeallocs();
options.testAnalysisOnly = getTestAnalysisOnly();
options.printConflicts = getPrintConflicts();
if (getFunctionBoundaryTypeConversion().has_value())
options.setFunctionBoundaryTypeConversion(
*getFunctionBoundaryTypeConversion());
if (getMemcpyOp() == "memref.copy") {
options.memCpyFn = [](OpBuilder &b, Location loc, Value from, Value to) {
b.create<memref::CopyOp>(loc, from, to);
return success();
};
} else if (getMemcpyOp() == "linalg.copy") {
options.memCpyFn = [](OpBuilder &b, Location loc, Value from, Value to) {
b.create<linalg::CopyOp>(loc, from, to);
return success();
};
} else {
llvm_unreachable("invalid copy op");
}
auto payloadOps = state.getPayloadOps(getTarget());
for (Operation *target : payloadOps) {
if (!isa<ModuleOp, FunctionOpInterface>(target))
return emitSilenceableError() << "expected module or function target";
auto moduleOp = dyn_cast<ModuleOp>(target);
if (options.bufferizeFunctionBoundaries) {
if (!moduleOp)
return emitSilenceableError() << "expected module target";
if (failed(bufferization::runOneShotModuleBufferize(moduleOp, options)))
return emitSilenceableError() << "bufferization failed";
} else {
if (failed(bufferization::runOneShotBufferize(target, options)))
return emitSilenceableError() << "bufferization failed";
}
}
// This transform op is currently restricted to ModuleOps and function ops.
// Such ops are modified in-place.
transformResults.set(cast<OpResult>(getTransformed()), payloadOps);
return DiagnosedSilenceableFailure::success();
}
//===----------------------------------------------------------------------===//
// EliminateEmptyTensorsOp
//===----------------------------------------------------------------------===//
void transform::EliminateEmptyTensorsOp::getEffects(
SmallVectorImpl<MemoryEffects::EffectInstance> &effects) {
onlyReadsHandle(getTarget(), effects);
modifiesPayload(effects);
}
DiagnosedSilenceableFailure transform::EliminateEmptyTensorsOp::apply(
transform::TransformRewriter &rewriter, TransformResults &transformResults,
TransformState &state) {
OneShotBufferizationOptions options;
options.allowReturnAllocs = true;
for (Operation *target : state.getPayloadOps(getTarget())) {
OneShotAnalysisState state(target, options);
if (failed(analyzeOp(target, state)))
return mlir::emitSilenceableFailure(target->getLoc())
<< "failed to analyze op";
if (failed(bufferization::insertSliceAnchoredEmptyTensorEliminationStep(
rewriter, target, state)))
return mlir::emitSilenceableFailure(target->getLoc())
<< "failed to eliminate insert_slice anchored tensor.empty ops";
}
return DiagnosedSilenceableFailure::success();
}
//===----------------------------------------------------------------------===//
// EmptyTensorToAllocTensorOp
//===----------------------------------------------------------------------===//
DiagnosedSilenceableFailure EmptyTensorToAllocTensorOp::applyToOne(
transform::TransformRewriter &rewriter, tensor::EmptyOp target,
ApplyToEachResultList &results, transform::TransformState &state) {
rewriter.setInsertionPoint(target);
auto alloc = rewriter.replaceOpWithNewOp<bufferization::AllocTensorOp>(
target, target.getType(), target.getDynamicSizes());
results.push_back(alloc);
return DiagnosedSilenceableFailure::success();
}
//===----------------------------------------------------------------------===//
// Transform op registration
//===----------------------------------------------------------------------===//
namespace {
/// Registers new ops and declares PDL as dependent dialect since the additional
/// ops are using PDL types for operands and results.
class BufferizationTransformDialectExtension
: public transform::TransformDialectExtension<
BufferizationTransformDialectExtension> {
public:
using Base::Base;
void init() {
declareGeneratedDialect<bufferization::BufferizationDialect>();
declareGeneratedDialect<memref::MemRefDialect>();
registerTransformOps<
#define GET_OP_LIST
#include "mlir/Dialect/Bufferization/TransformOps/BufferizationTransformOps.cpp.inc"
>();
}
};
} // namespace
#define GET_OP_CLASSES
#include "mlir/Dialect/Bufferization/TransformOps/BufferizationTransformOps.cpp.inc"
#include "mlir/Dialect/Bufferization/IR/BufferizationEnums.cpp.inc"
void mlir::bufferization::registerTransformDialectExtension(
DialectRegistry ®istry) {
registry.addExtensions<BufferizationTransformDialectExtension>();
}
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