ba2ac9c97c
Add a flag to control if CodegenStrategy runs the EnablePass between the transformations. Depends On D113382 Reviewed By: nicolasvasilache Differential Revision: https://reviews.llvm.org/D113409
259 lines
11 KiB
C++
259 lines
11 KiB
C++
//===- TestLinalgCodegenStrategy.cpp - Test Linalg codegen strategy -------===//
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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 logic for testing the Linalg codegen strategy.
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//
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//===----------------------------------------------------------------------===//
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#include "mlir/Dialect/Affine/IR/AffineOps.h"
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#include "mlir/Dialect/GPU/GPUDialect.h"
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#include "mlir/Dialect/Linalg/IR/LinalgOps.h"
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#include "mlir/Dialect/Linalg/Transforms/CodegenStrategy.h"
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#include "mlir/Dialect/Linalg/Utils/Utils.h"
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#include "mlir/Dialect/StandardOps/IR/Ops.h"
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#include "mlir/Dialect/Vector/VectorOps.h"
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#include "mlir/IR/PatternMatch.h"
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#include "mlir/Pass/Pass.h"
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#include "llvm/ADT/SetVector.h"
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using namespace mlir;
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using namespace mlir::linalg;
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namespace {
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struct TestLinalgCodegenStrategy
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: public PassWrapper<TestLinalgCodegenStrategy, FunctionPass> {
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StringRef getArgument() const final { return "test-linalg-codegen-strategy"; }
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StringRef getDescription() const final {
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return "Test Linalg Codegen Strategy.";
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}
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TestLinalgCodegenStrategy() = default;
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TestLinalgCodegenStrategy(const TestLinalgCodegenStrategy &pass) {}
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void getDependentDialects(DialectRegistry ®istry) const override {
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// clang-format off
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registry.insert<AffineDialect,
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gpu::GPUDialect,
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linalg::LinalgDialect,
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memref::MemRefDialect,
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scf::SCFDialect,
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StandardOpsDialect,
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vector::VectorDialect>();
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// clang-format on
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}
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template <typename LinalgNamedOp>
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void applyStrategyToNamedLinalgOp();
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void runOnFunction() override;
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void runStrategy(LinalgTilingOptions tilingOptions,
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LinalgTilingOptions registerTilingOptions,
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LinalgPaddingOptions paddingOptions,
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vector::VectorContractLowering vectorContractLowering,
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vector::VectorTransferSplit vectorTransferSplit);
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ListOption<int64_t> tileSizes{*this, "tile-sizes",
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llvm::cl::MiscFlags::CommaSeparated,
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llvm::cl::desc("Specifies the tile sizes.")};
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ListOption<unsigned> tileInterchange{
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*this, "tile-interchange", llvm::cl::MiscFlags::CommaSeparated,
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llvm::cl::desc("Specifies the tile interchange.")};
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Option<bool> promote{
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*this, "promote",
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llvm::cl::desc("Promote the tile into a small aligned memory buffer."),
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llvm::cl::init(false)};
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Option<bool> promoteFullTile{
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*this, "promote-full-tile-pad",
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llvm::cl::desc("Pad the small aligned memory buffer to the tile sizes."),
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llvm::cl::init(false)};
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ListOption<int64_t> registerTileSizes{
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*this, "register-tile-sizes", llvm::cl::MiscFlags::CommaSeparated,
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llvm::cl::desc(
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"Specifies the size of the register tile that will be used "
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" to vectorize")};
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Option<bool> registerPromote{
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*this, "register-promote",
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llvm::cl::desc(
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"Promote the register tile into a small aligned memory buffer."),
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llvm::cl::init(false)};
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Option<bool> registerPromoteFullTile{
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*this, "register-promote-full-tile-pad",
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llvm::cl::desc("Pad the small aligned memory buffer to the tile sizes."),
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llvm::cl::init(false)};
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Option<bool> pad{*this, "pad", llvm::cl::desc("Pad the operands."),
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llvm::cl::init(false)};
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ListOption<int64_t> packPaddings{
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*this, "pack-paddings",
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llvm::cl::desc("Operand packing flags when test-pad-pattern"),
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llvm::cl::ZeroOrMore, llvm::cl::MiscFlags::CommaSeparated};
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ListOption<int64_t> hoistPaddings{
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*this, "hoist-paddings",
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llvm::cl::desc("Operand hoisting depths when test-pad-pattern"),
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llvm::cl::ZeroOrMore, llvm::cl::MiscFlags::CommaSeparated};
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Option<bool> generalize{*this, "generalize",
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llvm::cl::desc("Generalize named operations."),
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llvm::cl::init(false)};
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ListOption<int64_t> iteratorInterchange{
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*this, "iterator-interchange", llvm::cl::MiscFlags::CommaSeparated,
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llvm::cl::desc("Specifies the iterator interchange.")};
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Option<bool> vectorize{
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*this, "vectorize",
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llvm::cl::desc("Rewrite the linalg op as a vector operation."),
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llvm::cl::init(false)};
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Option<std::string> splitVectorTransfersTo{
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*this, "split-transfers",
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llvm::cl::desc(
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"Split vector transfers between slow (masked) and fast "
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"(unmasked) variants. Possible options are:\n"
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"\tnone: keep unsplit vector.transfer and pay the full price\n"
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"\tlinalg-copy: use linalg.fill + linalg.copy for the slow path\n"
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"\tvector-transfers: use extra small unmasked vector.transfer for"
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" the slow path\n"),
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llvm::cl::init("none")};
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Option<std::string> vectorizeContractionTo{
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*this, "vectorize-contraction-to",
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llvm::cl::desc("the type of vector op to use for linalg contractions"),
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llvm::cl::init("outerproduct")};
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Option<bool> unrollVectorTransfers{
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*this, "unroll-vector-transfers",
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llvm::cl::desc("Enable full unrolling of vector.transfer operations"),
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llvm::cl::init(false)};
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Option<bool> runEnablePass{
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*this, "run-enable-pass",
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llvm::cl::desc("Run the enable pass between transformations"),
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llvm::cl::init(true)};
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Option<std::string> anchorOpName{
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*this, "anchor-op",
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llvm::cl::desc(
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"Which single linalg op is the anchor for the codegen strategy to "
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"latch on:\n"
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"\tlinalg.matmul: anchor on linalg.matmul\n"
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"\tlinalg.matmul_column_major: anchor on linalg.matmul_column_major\n"
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"\tlinalg.copy: anchor on linalg.copy\n"
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"\tlinalg.fill: anchor on linalg.fill\n"),
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llvm::cl::init("")};
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Option<std::string> anchorFuncOpName{
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*this, "anchor-func",
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llvm::cl::desc(
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"Which single func op is the anchor for the codegen strategy to "
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"latch on."),
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llvm::cl::init("")};
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};
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void TestLinalgCodegenStrategy::runStrategy(
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LinalgTilingOptions tilingOptions,
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LinalgTilingOptions registerTilingOptions,
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LinalgPaddingOptions paddingOptions,
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vector::VectorContractLowering vectorContractLowering,
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vector::VectorTransferSplit vectorTransferSplit) {
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assert(!anchorOpName.empty());
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CodegenStrategy strategy;
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StringRef genericOpName = GenericOp::getOperationName();
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strategy.tileIf(!tileSizes.empty(), anchorOpName, tilingOptions)
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.promoteIf(promote, anchorOpName,
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LinalgPromotionOptions()
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.setAlignment(16)
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.setUseFullTileBuffersByDefault(promoteFullTile))
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.tileIf(!registerTileSizes.empty(), anchorOpName, registerTilingOptions)
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.promoteIf(registerPromote, anchorOpName,
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LinalgPromotionOptions()
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.setAlignment(16)
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.setUseFullTileBuffersByDefault(registerPromoteFullTile))
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.padIf(pad, anchorOpName, paddingOptions)
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.generalizeIf(generalize, anchorOpName)
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.interchangeIf(!iteratorInterchange.empty(), iteratorInterchange)
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.vectorizeIf(vectorize, generalize ? genericOpName : anchorOpName)
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.vectorLowering(
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LinalgVectorLoweringOptions()
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.setVectorTransformsOptions(
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vector::VectorTransformsOptions()
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.setVectorTransformsOptions(vectorContractLowering)
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.setVectorTransferSplit(vectorTransferSplit))
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.setVectorTransferToSCFOptions(
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VectorTransferToSCFOptions().enableFullUnroll(
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unrollVectorTransfers))
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.enableTransferPartialRewrite()
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.enableContractionLowering()
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.enableTransferToSCFConversion());
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// Created a nested OpPassManager and run.
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FuncOp funcOp = getFunction();
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OpPassManager dynamicPM("builtin.func");
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strategy.configurePassPipeline(dynamicPM, funcOp.getContext(), runEnablePass);
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if (failed(runPipeline(dynamicPM, funcOp)))
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return signalPassFailure();
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}
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} // end anonymous namespace
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// For now, just assume it is the zero of type.
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// In the future, it should be the zero of type + op.
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static Value getNeutralOfLinalgOp(OpBuilder &b, OpOperand &op) {
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auto t = getElementTypeOrSelf(op.get());
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return b.create<arith::ConstantOp>(op.getOwner()->getLoc(), t,
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b.getZeroAttr(t));
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}
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/// Apply transformations specified as patterns.
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void TestLinalgCodegenStrategy::runOnFunction() {
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if (!anchorFuncOpName.empty() && anchorFuncOpName != getFunction().getName())
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return;
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LinalgTilingOptions tilingOptions;
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if (!tileSizes.empty())
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tilingOptions = tilingOptions.setTileSizes(tileSizes);
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if (!tileInterchange.empty())
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tilingOptions = tilingOptions.setInterchange(tileInterchange);
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LinalgTilingOptions registerTilingOptions;
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if (!registerTileSizes.empty())
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registerTilingOptions =
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registerTilingOptions.setTileSizes(registerTileSizes);
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LinalgPaddingOptions paddingOptions;
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auto packFunc = [&](OpOperand &opOperand) {
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return opOperand.getOperandNumber() < packPaddings.size()
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? packPaddings[opOperand.getOperandNumber()]
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: false;
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};
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auto hoistingFunc = [&](OpOperand &opOperand) {
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return opOperand.getOperandNumber() < hoistPaddings.size()
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? hoistPaddings[opOperand.getOperandNumber()]
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: 0;
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};
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paddingOptions.setPaddingValueComputationFunction(getNeutralOfLinalgOp);
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paddingOptions.setPaddingNoFoldComputationFunction(packFunc);
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paddingOptions.setPaddingHoistComputationFunction(hoistingFunc);
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vector::VectorContractLowering vectorContractLowering =
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llvm::StringSwitch<vector::VectorContractLowering>(
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vectorizeContractionTo.getValue())
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.Case("matrixintrinsics", vector::VectorContractLowering::Matmul)
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.Case("dot", vector::VectorContractLowering::Dot)
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.Case("outerproduct", vector::VectorContractLowering::OuterProduct)
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.Default(vector::VectorContractLowering::OuterProduct);
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vector::VectorTransferSplit vectorTransferSplit =
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llvm::StringSwitch<vector::VectorTransferSplit>(
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splitVectorTransfersTo.getValue())
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.Case("none", vector::VectorTransferSplit::None)
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.Case("linalg-copy", vector::VectorTransferSplit::LinalgCopy)
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.Case("vector-transfers", vector::VectorTransferSplit::VectorTransfer)
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.Default(vector::VectorTransferSplit::None);
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runStrategy(tilingOptions, registerTilingOptions, paddingOptions,
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vectorContractLowering, vectorTransferSplit);
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}
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namespace mlir {
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namespace test {
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void registerTestLinalgCodegenStrategy() {
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PassRegistration<TestLinalgCodegenStrategy>();
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}
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} // namespace test
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} // namespace mlir
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