80aca1eaf7
This revision removes all of the CRTP from the pass hierarchy in preparation for using the tablegen backend instead. This creates a much cleaner interface in the C++ code, and naturally fits with the rest of the infrastructure. A new utility class, PassWrapper, is added to replicate the existing behavior for passes not suitable for using the tablegen backend. Differential Revision: https://reviews.llvm.org/D77350
87 lines
2.6 KiB
C++
87 lines
2.6 KiB
C++
//===- ViewRegionGraph.cpp - View/write graphviz graphs -------------------===//
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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/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 Twine &name, bool shortNames,
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const Twine &title, llvm::GraphProgram::Name program) {
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llvm::ViewGraph(®ion, name, shortNames, title, program);
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}
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raw_ostream &mlir::writeGraph(raw_ostream &os, Region ®ion, bool shortNames,
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const 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 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 PassWrapper<PrintCFGPass, FunctionPass> {
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/// Include the generated pass utilities.
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#define GEN_PASS_PrintCFG
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#include "mlir/Transforms/Passes.h.inc"
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PrintCFGPass(raw_ostream &os = llvm::errs(), bool shortNames = false,
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const Twine &title = "")
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: os(os), shortNames(shortNames), title(title.str()) {}
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void runOnFunction() override {
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mlir::writeGraph(os, getFunction().getBody(), shortNames, title);
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}
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private:
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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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std::unique_ptr<mlir::OperationPass<mlir::FuncOp>>
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mlir::createPrintCFGGraphPass(raw_ostream &os, bool shortNames,
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const Twine &title) {
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return std::make_unique<PrintCFGPass>(os, shortNames, title);
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}
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