forked from OSchip/llvm-project
96 lines
3.1 KiB
C++
96 lines
3.1 KiB
C++
//===- ViewRegionGraph.cpp - View/write graphviz graphs -------------------===//
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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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#include "mlir/Transforms/ViewRegionGraph.h"
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#include "mlir/IR/RegionGraphTraits.h"
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#include "mlir/Pass/Pass.h"
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using namespace mlir;
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namespace llvm {
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// Specialize DOTGraphTraits to produce more readable output.
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template <> struct DOTGraphTraits<Region *> : public DefaultDOTGraphTraits {
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using DefaultDOTGraphTraits::DefaultDOTGraphTraits;
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static std::string getNodeLabel(Block *Block, Region *);
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};
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std::string DOTGraphTraits<Region *>::getNodeLabel(Block *Block, Region *) {
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// Reuse the print output for the node labels.
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std::string outStreamStr;
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raw_string_ostream os(outStreamStr);
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Block->print(os);
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std::string &outStr = os.str();
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if (outStr[0] == '\n')
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outStr.erase(outStr.begin());
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// Process string output to left justify the block.
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for (unsigned i = 0; i != outStr.length(); ++i) {
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if (outStr[i] == '\n') {
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outStr[i] = '\\';
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outStr.insert(outStr.begin() + i + 1, 'l');
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}
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}
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return outStr;
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}
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} // end namespace llvm
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void mlir::viewGraph(Region ®ion, const llvm::Twine &name, bool shortNames,
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const llvm::Twine &title,
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llvm::GraphProgram::Name program) {
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llvm::ViewGraph(®ion, name, shortNames, title, program);
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}
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llvm::raw_ostream &mlir::writeGraph(llvm::raw_ostream &os, Region ®ion,
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bool shortNames, const llvm::Twine &title) {
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return llvm::WriteGraph(os, ®ion, shortNames, title);
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}
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void mlir::Region::viewGraph(const llvm::Twine ®ionName) {
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::mlir::viewGraph(*this, regionName);
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}
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void mlir::Region::viewGraph() { viewGraph("region"); }
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namespace {
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struct PrintCFGPass : public FunctionPass<PrintCFGPass> {
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PrintCFGPass(llvm::raw_ostream &os = llvm::errs(), bool shortNames = false,
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const llvm::Twine &title = "")
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: os(os), shortNames(shortNames), title(title.str()) {}
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void runOnFunction() {
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mlir::writeGraph(os, getFunction().getBody(), shortNames, title);
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}
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private:
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llvm::raw_ostream &os;
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bool shortNames;
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std::string title;
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};
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} // namespace
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FunctionPassBase *mlir::createPrintCFGGraphPass(llvm::raw_ostream &os,
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bool shortNames,
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const llvm::Twine &title) {
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return new PrintCFGPass(os, shortNames, title);
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}
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static PassRegistration<PrintCFGPass> pass("print-cfg-graph",
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"Print CFG graph per Function");
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