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//===- TestLinalgDropUnitDims.cpp - Test Linalg drop unit dims -----------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file implements a pass for testing the transformation to drop unit
// extent dimensions from `linalg.generic` operations.
//
//===----------------------------------------------------------------------===//
#include "mlir/Dialect/Func/IR/FuncOps.h"
#include "mlir/Dialect/Linalg/IR/Linalg.h"
#include "mlir/Dialect/Linalg/Transforms/Transforms.h"
#include "mlir/Pass/Pass.h"
#include "mlir/Transforms/GreedyPatternRewriteDriver.h"
using namespace mlir;
namespace {
LogicalResult dropOutermostUnitDims(RewriterBase &rewriter,
linalg::GenericOp genericOp) {
linalg::ControlDropUnitDims options;
options.controlFn = [](Operation *op) { return SmallVector<unsigned>{0}; };
return linalg::dropUnitDims(rewriter, genericOp, options);
}
struct TestLinalgDropUnitDims
: public PassWrapper<TestLinalgDropUnitDims, OperationPass<func::FuncOp>> {
MLIR_DEFINE_EXPLICIT_INTERNAL_INLINE_TYPE_ID(TestLinalgDropUnitDims)
TestLinalgDropUnitDims() = default;
TestLinalgDropUnitDims(const TestLinalgDropUnitDims &pass)
: PassWrapper(pass) {}
void getDependentDialects(DialectRegistry ®istry) const override {
registry.insert<linalg::LinalgDialect>();
}
StringRef getArgument() const final { return "test-linalg-drop-unit-dims"; }
StringRef getDescriptions() const {
return "Test transformation to drop unit-extent dims from Linalg "
"operations";
}
void runOnOperation() override {
MLIRContext *context = &this->getContext();
func::FuncOp funcOp = this->getOperation();
IRRewriter rewriter(context);
SmallVector<linalg::GenericOp> genericOps;
funcOp.walk(
[&](linalg::GenericOp genericOp) { genericOps.push_back(genericOp); });
for (auto genericOp : genericOps) {
rewriter.setInsertionPoint(genericOp);
(void)dropOutermostUnitDims(rewriter, genericOp);
}
}
};
} // namespace
namespace mlir {
namespace test {
void registerTestLinalgDropUnitDims() {
PassRegistration<TestLinalgDropUnitDims>();
}
} // namespace test
} // namespace mlir
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