Merge "Update prebuilt Clang to r353983." into p9.0HEADp9.0-backupp9.0

1 files changed, 188 insertions, 0 deletions

diff --git a/clang-r353983/include/llvm/Analysis/DOTGraphTraitsPass.h b/clang-r353983/include/llvm/Analysis/DOTGraphTraitsPass.h
new file mode 100644
index 00000000..0410a331
--- /dev/null
+++ b/clang-r353983/include/llvm/Analysis/DOTGraphTraitsPass.h
@@ -0,0 +1,188 @@
+//===-- DOTGraphTraitsPass.h - Print/View dotty graphs-----------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// Templates to create dotty viewer and printer passes for GraphTraits graphs.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_ANALYSIS_DOTGRAPHTRAITSPASS_H
+#define LLVM_ANALYSIS_DOTGRAPHTRAITSPASS_H
+
+#include "llvm/Analysis/CFGPrinter.h"
+#include "llvm/Pass.h"
+#include "llvm/Support/FileSystem.h"
+
+namespace llvm {
+
+/// Default traits class for extracting a graph from an analysis pass.
+///
+/// This assumes that 'GraphT' is 'AnalysisT *' and so just passes it through.
+template <typename AnalysisT, typename GraphT = AnalysisT *>
+struct DefaultAnalysisGraphTraits {
+  static GraphT getGraph(AnalysisT *A) { return A; }
+};
+
+template <
+    typename AnalysisT, bool IsSimple, typename GraphT = AnalysisT *,
+    typename AnalysisGraphTraitsT = DefaultAnalysisGraphTraits<AnalysisT, GraphT> >
+class DOTGraphTraitsViewer : public FunctionPass {
+public:
+  DOTGraphTraitsViewer(StringRef GraphName, char &ID)
+      : FunctionPass(ID), Name(GraphName) {}
+
+  /// Return true if this function should be processed.
+  ///
+  /// An implementation of this class my override this function to indicate that
+  /// only certain functions should be viewed.
+  ///
+  /// @param Analysis The current analysis result for this function.
+  virtual bool processFunction(Function &F, AnalysisT &Analysis) {
+    return true;
+  }
+
+  bool runOnFunction(Function &F) override {
+    auto &Analysis = getAnalysis<AnalysisT>();
+
+    if (!processFunction(F, Analysis))
+      return false;
+
+    GraphT Graph = AnalysisGraphTraitsT::getGraph(&Analysis);
+    std::string GraphName = DOTGraphTraits<GraphT>::getGraphName(Graph);
+    std::string Title = GraphName + " for '" + F.getName().str() + "' function";
+
+    ViewGraph(Graph, Name, IsSimple, Title);
+
+    return false;
+  }
+
+  void getAnalysisUsage(AnalysisUsage &AU) const override {
+    AU.setPreservesAll();
+    AU.addRequired<AnalysisT>();
+  }
+
+private:
+  std::string Name;
+};
+
+template <
+    typename AnalysisT, bool IsSimple, typename GraphT = AnalysisT *,
+    typename AnalysisGraphTraitsT = DefaultAnalysisGraphTraits<AnalysisT, GraphT> >
+class DOTGraphTraitsPrinter : public FunctionPass {
+public:
+  DOTGraphTraitsPrinter(StringRef GraphName, char &ID)
+      : FunctionPass(ID), Name(GraphName) {}
+
+  /// Return true if this function should be processed.
+  ///
+  /// An implementation of this class my override this function to indicate that
+  /// only certain functions should be printed.
+  ///
+  /// @param Analysis The current analysis result for this function.
+  virtual bool processFunction(Function &F, AnalysisT &Analysis) {
+    return true;
+  }
+
+  bool runOnFunction(Function &F) override {
+    auto &Analysis = getAnalysis<AnalysisT>();
+
+    if (!processFunction(F, Analysis))
+      return false;
+
+    GraphT Graph = AnalysisGraphTraitsT::getGraph(&Analysis);
+    std::string Filename = Name + "." + F.getName().str() + ".dot";
+    std::error_code EC;
+
+    errs() << "Writing '" << Filename << "'...";
+
+    raw_fd_ostream File(Filename, EC, sys::fs::F_Text);
+    std::string GraphName = DOTGraphTraits<GraphT>::getGraphName(Graph);
+    std::string Title = GraphName + " for '" + F.getName().str() + "' function";
+
+    if (!EC)
+      WriteGraph(File, Graph, IsSimple, Title);
+    else
+      errs() << "  error opening file for writing!";
+    errs() << "\n";
+
+    return false;
+  }
+
+  void getAnalysisUsage(AnalysisUsage &AU) const override {
+    AU.setPreservesAll();
+    AU.addRequired<AnalysisT>();
+  }
+
+private:
+  std::string Name;
+};
+
+template <
+    typename AnalysisT, bool IsSimple, typename GraphT = AnalysisT *,
+    typename AnalysisGraphTraitsT = DefaultAnalysisGraphTraits<AnalysisT, GraphT> >
+class DOTGraphTraitsModuleViewer : public ModulePass {
+public:
+  DOTGraphTraitsModuleViewer(StringRef GraphName, char &ID)
+      : ModulePass(ID), Name(GraphName) {}
+
+  bool runOnModule(Module &M) override {
+    GraphT Graph = AnalysisGraphTraitsT::getGraph(&getAnalysis<AnalysisT>());
+    std::string Title = DOTGraphTraits<GraphT>::getGraphName(Graph);
+
+    ViewGraph(Graph, Name, IsSimple, Title);
+
+    return false;
+  }
+
+  void getAnalysisUsage(AnalysisUsage &AU) const override {
+    AU.setPreservesAll();
+    AU.addRequired<AnalysisT>();
+  }
+
+private:
+  std::string Name;
+};
+
+template <
+    typename AnalysisT, bool IsSimple, typename GraphT = AnalysisT *,
+    typename AnalysisGraphTraitsT = DefaultAnalysisGraphTraits<AnalysisT, GraphT> >
+class DOTGraphTraitsModulePrinter : public ModulePass {
+public:
+  DOTGraphTraitsModulePrinter(StringRef GraphName, char &ID)
+      : ModulePass(ID), Name(GraphName) {}
+
+  bool runOnModule(Module &M) override {
+    GraphT Graph = AnalysisGraphTraitsT::getGraph(&getAnalysis<AnalysisT>());
+    std::string Filename = Name + ".dot";
+    std::error_code EC;
+
+    errs() << "Writing '" << Filename << "'...";
+
+    raw_fd_ostream File(Filename, EC, sys::fs::F_Text);
+    std::string Title = DOTGraphTraits<GraphT>::getGraphName(Graph);
+
+    if (!EC)
+      WriteGraph(File, Graph, IsSimple, Title);
+    else
+      errs() << "  error opening file for writing!";
+    errs() << "\n";
+
+    return false;
+  }
+
+  void getAnalysisUsage(AnalysisUsage &AU) const override {
+    AU.setPreservesAll();
+    AU.addRequired<AnalysisT>();
+  }
+
+private:
+  std::string Name;
+};
+
+} // end namespace llvm
+
+#endif