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//===- PostOrderIteratorTest.cpp - PostOrderIterator unit tests -----------===//
// The LLVM Compiler Infrastructure
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
#include "gtest/gtest.h"
#include "llvm/ADT/PostOrderIterator.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/CFG.h"
using namespace llvm;
namespace {
// Whether we're able to compile
TEST(PostOrderIteratorTest, Compiles) {
typedef SmallPtrSet<void *, 4> ExtSetTy;
// Tests that template specializations are kept up to date
void *Null = nullptr;
po_iterator_storage<std::set<void *>, false> PIS;
PIS.insertEdge(Null, Null);
ExtSetTy Ext;
po_iterator_storage<ExtSetTy, true> PISExt(Ext);
PIS.insertEdge(Null, Null);
// Test above, but going through po_iterator (which inherits from template
// base)
BasicBlock *NullBB = nullptr;
auto PI = po_end(NullBB);
PI.insertEdge(NullBB, NullBB);
auto PIExt = po_ext_end(NullBB, Ext);
PIExt.insertEdge(NullBB, NullBB);