1 //=======- CallGraphTest.cpp - Unit tests for the CG analysis -------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/Analysis/CallGraph.h"
11 #include "llvm/IR/LLVMContext.h"
12 #include "llvm/IR/Module.h"
13 #include "gtest/gtest.h"
19 template <typename Ty> void canSpecializeGraphTraitsIterators(Ty *G) {
20 typedef typename GraphTraits<Ty *>::NodeType NodeTy;
22 auto I = GraphTraits<Ty *>::nodes_begin(G);
23 auto E = GraphTraits<Ty *>::nodes_end(G);
26 // Should be able to iterate over all nodes of the graph.
27 static_assert(std::is_same<decltype(*I), NodeTy &>::value,
28 "Node type does not match");
29 static_assert(std::is_same<decltype(*X), NodeTy &>::value,
30 "Node type does not match");
31 static_assert(std::is_same<decltype(*E), NodeTy &>::value,
32 "Node type does not match");
34 NodeTy *N = GraphTraits<Ty *>::getEntryNode(G);
36 auto S = GraphTraits<NodeTy *>::child_begin(N);
37 auto F = GraphTraits<NodeTy *>::child_end(N);
39 // Should be able to iterate over immediate successors of a node.
40 static_assert(std::is_same<decltype(*S), NodeTy *>::value,
41 "Node type does not match");
42 static_assert(std::is_same<decltype(*F), NodeTy *>::value,
43 "Node type does not match");
46 TEST(CallGraphTest, GraphTraitsSpecialization) {
47 Module M("", getGlobalContext());
50 canSpecializeGraphTraitsIterators(&CG);
53 TEST(CallGraphTest, GraphTraitsConstSpecialization) {
54 Module M("", getGlobalContext());
57 canSpecializeGraphTraitsIterators(const_cast<const CallGraph *>(&CG));