1 files changed, 91 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/lib/Analysis/CallPrinter.cpp b/contrib/llvm-project/llvm/lib/Analysis/CallPrinter.cpp
new file mode 100644
index 000000000000..d24cbd104bf6
--- /dev/null
+++ b/contrib/llvm-project/llvm/lib/Analysis/CallPrinter.cpp
@@ -0,0 +1,91 @@
+//===- CallPrinter.cpp - DOT printer for call graph -----------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines '-dot-callgraph', which emit a callgraph.<fnname>.dot
+// containing the call graph of a module.
+//
+// There is also a pass available to directly call dotty ('-view-callgraph').
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Analysis/CallPrinter.h"
+#include "llvm/Analysis/CallGraph.h"
+#include "llvm/Analysis/DOTGraphTraitsPass.h"
+
+using namespace llvm;
+
+namespace llvm {
+
+template <> struct DOTGraphTraits<CallGraph *> : public DefaultDOTGraphTraits {
+  DOTGraphTraits(bool isSimple = false) : DefaultDOTGraphTraits(isSimple) {}
+
+  static std::string getGraphName(CallGraph *Graph) { return "Call graph"; }
+
+  std::string getNodeLabel(CallGraphNode *Node, CallGraph *Graph) {
+    if (Function *Func = Node->getFunction())
+      return Func->getName();
+
+    return "external node";
+  }
+};
+
+struct AnalysisCallGraphWrapperPassTraits {
+  static CallGraph *getGraph(CallGraphWrapperPass *P) {
+    return &P->getCallGraph();
+  }
+};
+
+} // end llvm namespace
+
+namespace {
+
+struct CallGraphViewer
+    : public DOTGraphTraitsModuleViewer<CallGraphWrapperPass, true, CallGraph *,
+                                        AnalysisCallGraphWrapperPassTraits> {
+  static char ID;
+
+  CallGraphViewer()
+      : DOTGraphTraitsModuleViewer<CallGraphWrapperPass, true, CallGraph *,
+                                   AnalysisCallGraphWrapperPassTraits>(
+            "callgraph", ID) {
+    initializeCallGraphViewerPass(*PassRegistry::getPassRegistry());
+  }
+};
+
+struct CallGraphDOTPrinter : public DOTGraphTraitsModulePrinter<
+                              CallGraphWrapperPass, true, CallGraph *,
+                              AnalysisCallGraphWrapperPassTraits> {
+  static char ID;
+
+  CallGraphDOTPrinter()
+      : DOTGraphTraitsModulePrinter<CallGraphWrapperPass, true, CallGraph *,
+                                    AnalysisCallGraphWrapperPassTraits>(
+            "callgraph", ID) {
+    initializeCallGraphDOTPrinterPass(*PassRegistry::getPassRegistry());
+  }
+};
+
+} // end anonymous namespace
+
+char CallGraphViewer::ID = 0;
+INITIALIZE_PASS(CallGraphViewer, "view-callgraph", "View call graph", false,
+                false)
+
+char CallGraphDOTPrinter::ID = 0;
+INITIALIZE_PASS(CallGraphDOTPrinter, "dot-callgraph",
+                "Print call graph to 'dot' file", false, false)
+
+// Create methods available outside of this file, to use them
+// "include/llvm/LinkAllPasses.h". Otherwise the pass would be deleted by
+// the link time optimization.
+
+ModulePass *llvm::createCallGraphViewerPass() { return new CallGraphViewer(); }
+
+ModulePass *llvm::createCallGraphDOTPrinterPass() {
+  return new CallGraphDOTPrinter();
+}