fa7d0d3e35
This patch adds a simple pass to replace the uses inside compute operation. It replaces the `varPtr` values with their corresponding `accPtr` values gathered through the dataClauseOperands. private and reductions variables are not included in this pass since they will normally be replace when they are materialized.
73 lines
2.2 KiB
C++
73 lines
2.2 KiB
C++
//===- LegalizeData.cpp - -------------------------------------------------===//
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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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#include "mlir/Dialect/OpenACC/Transforms/Passes.h"
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#include "mlir/Dialect/Func/IR/FuncOps.h"
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#include "mlir/Dialect/OpenACC/OpenACC.h"
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#include "mlir/Pass/Pass.h"
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#include "mlir/Transforms/RegionUtils.h"
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namespace mlir {
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namespace acc {
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#define GEN_PASS_DEF_LEGALIZEDATAINREGION
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#include "mlir/Dialect/OpenACC/Transforms/Passes.h.inc"
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} // namespace acc
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} // namespace mlir
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using namespace mlir;
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namespace {
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template <typename Op>
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static void collectAndReplaceInRegion(Op &op, bool hostToDevice) {
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llvm::SmallVector<std::pair<Value, Value>> values;
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for (auto operand : op.getDataClauseOperands()) {
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Value varPtr = acc::getVarPtr(operand.getDefiningOp());
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Value accPtr = acc::getAccPtr(operand.getDefiningOp());
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if (varPtr && accPtr) {
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if (hostToDevice)
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values.push_back({varPtr, accPtr});
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else
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values.push_back({accPtr, varPtr});
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}
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}
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for (auto p : values)
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replaceAllUsesInRegionWith(std::get<0>(p), std::get<1>(p), op.getRegion());
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}
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struct LegalizeDataInRegion
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: public acc::impl::LegalizeDataInRegionBase<LegalizeDataInRegion> {
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void runOnOperation() override {
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func::FuncOp funcOp = getOperation();
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bool replaceHostVsDevice = this->hostToDevice.getValue();
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funcOp.walk([&](Operation *op) {
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if (!isa<ACC_COMPUTE_CONSTRUCT_OPS>(*op))
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return;
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if (auto parallelOp = dyn_cast<acc::ParallelOp>(*op)) {
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collectAndReplaceInRegion(parallelOp, replaceHostVsDevice);
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} else if (auto serialOp = dyn_cast<acc::SerialOp>(*op)) {
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collectAndReplaceInRegion(serialOp, replaceHostVsDevice);
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} else if (auto kernelsOp = dyn_cast<acc::KernelsOp>(*op)) {
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collectAndReplaceInRegion(kernelsOp, replaceHostVsDevice);
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}
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});
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}
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};
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} // end anonymous namespace
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std::unique_ptr<OperationPass<func::FuncOp>>
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mlir::acc::createLegalizeDataInRegion() {
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return std::make_unique<LegalizeDataInRegion>();
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}
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