92 lines
3.7 KiB
C
92 lines
3.7 KiB
C
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//===- llvm/Analysis/DDGPrinter.h -------------------------------*- C++ -*-===//
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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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//
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// This file defines the DOT printer for the Data-Dependence Graph (DDG).
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_ANALYSIS_DDGPRINTER_H
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#define LLVM_ANALYSIS_DDGPRINTER_H
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#include "llvm/Analysis/DDG.h"
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#include "llvm/Pass.h"
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#include "llvm/Support/DOTGraphTraits.h"
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namespace llvm {
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//===--------------------------------------------------------------------===//
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// Implementation of DDG DOT Printer for a loop.
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//===--------------------------------------------------------------------===//
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class DDGDotPrinterPass : public PassInfoMixin<DDGDotPrinterPass> {
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public:
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PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM,
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LoopStandardAnalysisResults &AR, LPMUpdater &U);
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};
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//===--------------------------------------------------------------------===//
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// Specialization of DOTGraphTraits.
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//===--------------------------------------------------------------------===//
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template <>
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struct DOTGraphTraits<const DataDependenceGraph *>
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: public DefaultDOTGraphTraits {
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DOTGraphTraits(bool IsSimple = false) : DefaultDOTGraphTraits(IsSimple) {}
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/// Generate a title for the graph in DOT format
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std::string getGraphName(const DataDependenceGraph *G) {
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assert(G && "expected a valid pointer to the graph.");
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return "DDG for '" + std::string(G->getName()) + "'";
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}
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/// Print a DDG node either in concise form (-ddg-dot-only) or
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/// verbose mode (-ddg-dot).
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std::string getNodeLabel(const DDGNode *Node,
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const DataDependenceGraph *Graph);
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/// Print attributes of an edge in the DDG graph. If the edge
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/// is a MemoryDependence edge, then detailed dependence info
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/// available from DependenceAnalysis is displayed.
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std::string
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getEdgeAttributes(const DDGNode *Node,
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GraphTraits<const DDGNode *>::ChildIteratorType I,
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const DataDependenceGraph *G);
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/// Do not print nodes that are part of a pi-block separately. They
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/// will be printed when their containing pi-block is being printed.
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bool isNodeHidden(const DDGNode *Node, const DataDependenceGraph *G);
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private:
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/// Print a DDG node in concise form.
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static std::string getSimpleNodeLabel(const DDGNode *Node,
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const DataDependenceGraph *G);
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/// Print a DDG node with more information including containing instructions
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/// and detailed information about the dependence edges.
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static std::string getVerboseNodeLabel(const DDGNode *Node,
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const DataDependenceGraph *G);
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/// Print a DDG edge in concise form.
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static std::string getSimpleEdgeAttributes(const DDGNode *Src,
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const DDGEdge *Edge,
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const DataDependenceGraph *G);
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/// Print a DDG edge with more information including detailed information
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/// about the dependence edges.
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static std::string getVerboseEdgeAttributes(const DDGNode *Src,
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const DDGEdge *Edge,
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const DataDependenceGraph *G);
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};
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using DDGDotGraphTraits = DOTGraphTraits<const DataDependenceGraph *>;
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} // namespace llvm
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#endif // LLVM_ANALYSIS_DDGPRINTER_H
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