| 1 | //=======- CallGraphTest.cpp - Unit tests for the CG analysis -------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "llvm/Analysis/CallGraph.h" |
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| 10 | #include "llvm/IR/LLVMContext.h" |
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| 11 | #include "llvm/IR/Module.h" |
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| 12 | #include "gtest/gtest.h" |
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| 13 | |
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| 14 | using namespace llvm; |
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| 15 | |
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| 16 | namespace { |
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| 17 | |
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| 18 | template <typename Ty> void canSpecializeGraphTraitsIterators(Ty *G) { |
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| 19 | typedef typename GraphTraits<Ty *>::NodeRef NodeRef; |
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| 20 | |
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| 21 | auto I = GraphTraits<Ty *>::nodes_begin(G); |
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| 22 | auto E = GraphTraits<Ty *>::nodes_end(G); |
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| 23 | auto X = ++I; |
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| 24 | |
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| 25 | // Should be able to iterate over all nodes of the graph. |
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| 26 | static_assert(std::is_same_v<decltype(*I), NodeRef>, |
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| 27 | "Node type does not match" ); |
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| 28 | static_assert(std::is_same_v<decltype(*X), NodeRef>, |
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| 29 | "Node type does not match" ); |
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| 30 | static_assert(std::is_same_v<decltype(*E), NodeRef>, |
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| 31 | "Node type does not match" ); |
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| 32 | |
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| 33 | NodeRef N = GraphTraits<Ty *>::getEntryNode(G); |
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| 34 | |
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| 35 | auto S = GraphTraits<NodeRef>::child_begin(N); |
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| 36 | auto F = GraphTraits<NodeRef>::child_end(N); |
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| 37 | |
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| 38 | // Should be able to iterate over immediate successors of a node. |
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| 39 | static_assert(std::is_same_v<decltype(*S), NodeRef>, |
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| 40 | "Node type does not match" ); |
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| 41 | static_assert(std::is_same_v<decltype(*F), NodeRef>, |
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| 42 | "Node type does not match" ); |
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| 43 | } |
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| 44 | |
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| 45 | TEST(CallGraphTest, GraphTraitsSpecialization) { |
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| 46 | LLVMContext Context; |
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| 47 | Module M("" , Context); |
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| 48 | CallGraph CG(M); |
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| 49 | |
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| 50 | canSpecializeGraphTraitsIterators(G: &CG); |
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| 51 | } |
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| 52 | |
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| 53 | TEST(CallGraphTest, GraphTraitsConstSpecialization) { |
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| 54 | LLVMContext Context; |
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| 55 | Module M("" , Context); |
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| 56 | CallGraph CG(M); |
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| 57 | |
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| 58 | canSpecializeGraphTraitsIterators(G: const_cast<const CallGraph *>(&CG)); |
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| 59 | } |
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| 60 | } |
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| 61 | |
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