58 lines
1.8 KiB
C++
58 lines
1.8 KiB
C++
//===- ParallelismDetection.cpp - Parallelism Detection pass ------------*-===//
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//
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// Copyright 2019 The MLIR Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// =============================================================================
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//
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// This file implements a pass to detect parallel affine 'affine.for' ops.
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//
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//===----------------------------------------------------------------------===//
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#include "mlir/Analysis/Passes.h"
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#include "mlir/Analysis/Utils.h"
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#include "mlir/Dialect/AffineOps/AffineOps.h"
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#include "mlir/IR/Builders.h"
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#include "mlir/Pass/Pass.h"
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using namespace mlir;
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namespace {
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struct TestParallelismDetection
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: public FunctionPass<TestParallelismDetection> {
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void runOnFunction() override;
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};
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} // end anonymous namespace
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FunctionPassBase *mlir::createParallelismDetectionTestPass() {
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return new TestParallelismDetection();
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}
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// Walks the function and emits a note for all 'affine.for' ops detected as
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// parallel.
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void TestParallelismDetection::runOnFunction() {
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FuncOp f = getFunction();
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OpBuilder b(f.getBody());
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f.walk<AffineForOp>([&](AffineForOp forOp) {
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if (isLoopParallel(forOp))
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forOp.emitRemark("parallel loop");
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else
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forOp.emitRemark("sequential loop");
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});
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}
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static PassRegistration<TestParallelismDetection>
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pass("test-detect-parallel", "Test parallelism detection ");
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