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//=======- CallGraphTest.cpp - Unit tests for the CG analysis -------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "llvm/Analysis/CallGraph.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
template <typename Ty> void canSpecializeGraphTraitsIterators(Ty *G) {
typedef typename GraphTraits<Ty *>::NodeRef NodeRef;
auto I = GraphTraits<Ty *>::nodes_begin(G);
auto E = GraphTraits<Ty *>::nodes_end(G);
auto X = ++I;
// Should be able to iterate over all nodes of the graph.
static_assert(std::is_same_v<decltype(*I), NodeRef>,
"Node type does not match");
static_assert(std::is_same_v<decltype(*X), NodeRef>,
"Node type does not match");
static_assert(std::is_same_v<decltype(*E), NodeRef>,
"Node type does not match");
NodeRef N = GraphTraits<Ty *>::getEntryNode(G);
auto S = GraphTraits<NodeRef>::child_begin(N);
auto F = GraphTraits<NodeRef>::child_end(N);
// Should be able to iterate over immediate successors of a node.
static_assert(std::is_same_v<decltype(*S), NodeRef>,
"Node type does not match");
static_assert(std::is_same_v<decltype(*F), NodeRef>,
"Node type does not match");
}
TEST(CallGraphTest, GraphTraitsSpecialization) {
LLVMContext Context;
Module M("", Context);
CallGraph CG(M);
canSpecializeGraphTraitsIterators(&CG);
}
TEST(CallGraphTest, GraphTraitsConstSpecialization) {
LLVMContext Context;
Module M("", Context);
CallGraph CG(M);
canSpecializeGraphTraitsIterators(const_cast<const CallGraph *>(&CG));
}
}
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