107 lines
4.2 KiB
C++
107 lines
4.2 KiB
C++
//===- TestLowerToLLVM.cpp - Test lowering to LLVM as a sink pass ---------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements a pass for testing the lowering to LLVM as a generally
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// usable sink pass.
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//
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//===----------------------------------------------------------------------===//
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#include "mlir/Conversion/AffineToStandard/AffineToStandard.h"
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#include "mlir/Conversion/FuncToLLVM/ConvertFuncToLLVMPass.h"
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#include "mlir/Conversion/IndexToLLVM/IndexToLLVM.h"
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#include "mlir/Conversion/LinalgToLLVM/LinalgToLLVM.h"
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#include "mlir/Conversion/MathToLLVM/MathToLLVM.h"
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#include "mlir/Conversion/MemRefToLLVM/MemRefToLLVM.h"
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#include "mlir/Conversion/ReconcileUnrealizedCasts/ReconcileUnrealizedCasts.h"
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#include "mlir/Conversion/SCFToControlFlow/SCFToControlFlow.h"
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#include "mlir/Conversion/VectorToLLVM/ConvertVectorToLLVM.h"
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#include "mlir/Conversion/VectorToSCF/VectorToSCF.h"
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#include "mlir/Dialect/Func/IR/FuncOps.h"
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#include "mlir/Dialect/LLVMIR/LLVMDialect.h"
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#include "mlir/Dialect/Linalg/Passes.h"
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#include "mlir/IR/DialectRegistry.h"
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#include "mlir/Pass/Pass.h"
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#include "mlir/Pass/PassManager.h"
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#include "mlir/Transforms/Passes.h"
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using namespace mlir;
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namespace {
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struct TestLowerToLLVM
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: public PassWrapper<TestLowerToLLVM, OperationPass<ModuleOp>> {
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MLIR_DEFINE_EXPLICIT_INTERNAL_INLINE_TYPE_ID(TestLowerToLLVM)
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TestLowerToLLVM() = default;
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TestLowerToLLVM(const TestLowerToLLVM &pass) : PassWrapper(pass) {}
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StringRef getArgument() const final { return "test-lower-to-llvm"; }
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StringRef getDescription() const final {
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return "Test lowering to LLVM as a generally usable sink pass";
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}
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void getDependentDialects(DialectRegistry ®istry) const override {
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registry.insert<LLVM::LLVMDialect>();
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}
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Option<bool> reassociateFPReductions{
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*this, "reassociate-fp-reductions",
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llvm::cl::desc("Allow reassociation og FP reductions"),
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llvm::cl::init(false)};
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void runOnOperation() final;
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};
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} // namespace
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void TestLowerToLLVM::runOnOperation() {
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MLIRContext *context = &this->getContext();
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RewritePatternSet patterns(context);
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// TODO: it is feasible to scope lowering at arbitrary level and introduce
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// unrealized casts, but there needs to be the final module-wise cleanup in
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// the end. Keep module-level for now.
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PassManager pm(&getContext());
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// Blanket-convert any remaining high-level vector ops to loops if any remain.
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pm.addNestedPass<func::FuncOp>(createConvertVectorToSCFPass());
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// Blanket-convert any remaining linalg ops to loops if any remain.
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pm.addNestedPass<func::FuncOp>(createConvertLinalgToLoopsPass());
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// Blanket-convert any remaining affine ops if any remain.
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pm.addPass(createLowerAffinePass());
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// Convert SCF to CF (always needed).
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pm.addPass(createConvertSCFToCFPass());
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// Sprinkle some cleanups.
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pm.addPass(createCanonicalizerPass());
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pm.addPass(createCSEPass());
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// Blanket-convert any remaining linalg ops to LLVM if any remain.
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pm.addPass(createConvertLinalgToLLVMPass());
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// Convert vector to LLVM (always needed).
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pm.addPass(createConvertVectorToLLVMPass(
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// TODO: add more options on a per-need basis.
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LowerVectorToLLVMOptions().enableReassociateFPReductions(
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reassociateFPReductions)));
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// Convert Math to LLVM (always needed).
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pm.addNestedPass<func::FuncOp>(createConvertMathToLLVMPass());
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// Convert MemRef to LLVM (always needed).
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pm.addPass(createMemRefToLLVMConversionPass());
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// Convert Func to LLVM (always needed).
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pm.addPass(createConvertFuncToLLVMPass());
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// Convert Index to LLVM (always needed).
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pm.addPass(createConvertIndexToLLVMPass());
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// Convert remaining unrealized_casts (always needed).
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pm.addPass(createReconcileUnrealizedCastsPass());
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if (failed(pm.run(getOperation()))) {
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getOperation()->dump();
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return signalPassFailure();
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}
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}
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namespace mlir {
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namespace test {
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void registerTestLowerToLLVM() { PassRegistration<TestLowerToLLVM>(); }
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} // namespace test
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} // namespace mlir
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