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00530c8441
Add an assertion to the MachineInstrBundleIterator from instr_iterator that the underlying iterator is valid. This is possible know that we can check ilist_node::isSentinel (since r281168), and is consistent with the constructors from MachineInstr* and MachineInstr&. Avoiding the new assertion in operator== and operator!= requires four (!!!!) new overloads each. (As an aside, I'm strongly in favour of: - making the conversion from instr_iterator explicit; - making the conversion from pointer explicit; - making the conversion from reference explicit; and - removing all the extra overloads of operator== and operator!= except const_instr_iterator. I'm not signing up for that at this point, but being clear about when something is an MachineInstr-iterator (possibly instr_end()) vs MachineInstr-bundle-iterator (possibly end()) vs MachineInstr* (possibly nullptr) vs MachineInstr& (known valid) would surely make code cleaner... and it would remove a ton of boilerplate from MachineInstrBundleIterator operators.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@281170 91177308-0d34-0410-b5e6-96231b3b80d8
112 lines
3.5 KiB
C++
112 lines
3.5 KiB
C++
//===- MachineInstrBundleIteratorTest.cpp ---------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/ilist_node.h"
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#include "llvm/CodeGen/MachineInstrBundleIterator.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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namespace {
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struct MyBundledInstr
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: public ilist_node<MyBundledInstr, ilist_sentinel_tracking<true>> {
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bool isBundledWithPred() const { return true; }
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bool isBundledWithSucc() const { return true; }
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};
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typedef MachineInstrBundleIterator<MyBundledInstr> bundled_iterator;
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typedef MachineInstrBundleIterator<const MyBundledInstr> const_bundled_iterator;
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#ifdef GTEST_HAS_DEATH_TEST
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#ifndef NDEBUG
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TEST(MachineInstrBundleIteratorTest, CheckForBundles) {
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MyBundledInstr MBI;
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// Confirm that MBI is always considered bundled.
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EXPECT_TRUE(MBI.isBundledWithPred());
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EXPECT_TRUE(MBI.isBundledWithSucc());
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// Confirm that iterators check in their constructor for bundled iterators.
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EXPECT_DEATH((void)static_cast<bundled_iterator>(MBI),
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"not legal to initialize");
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EXPECT_DEATH((void)static_cast<bundled_iterator>(&MBI),
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"not legal to initialize");
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EXPECT_DEATH((void)static_cast<const_bundled_iterator>(MBI),
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"not legal to initialize");
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EXPECT_DEATH((void)static_cast<const_bundled_iterator>(&MBI),
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"not legal to initialize");
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}
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#endif
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#endif
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TEST(MachineInstrBundleIteratorTest, CompareToBundledMI) {
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MyBundledInstr MBI;
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const MyBundledInstr &CMBI = MBI;
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bundled_iterator I;
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const_bundled_iterator CI;
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// Confirm that MBI is always considered bundled.
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EXPECT_TRUE(MBI.isBundledWithPred());
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EXPECT_TRUE(MBI.isBundledWithSucc());
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// These invocations will crash when !NDEBUG if a conversion is taking place.
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// These checks confirm that comparison operators don't use any conversion
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// operators.
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ASSERT_FALSE(MBI == I);
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ASSERT_FALSE(&MBI == I);
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ASSERT_FALSE(CMBI == I);
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ASSERT_FALSE(&CMBI == I);
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ASSERT_FALSE(I == MBI);
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ASSERT_FALSE(I == &MBI);
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ASSERT_FALSE(I == CMBI);
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ASSERT_FALSE(I == &CMBI);
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ASSERT_FALSE(MBI == CI);
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ASSERT_FALSE(&MBI == CI);
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ASSERT_FALSE(CMBI == CI);
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ASSERT_FALSE(&CMBI == CI);
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ASSERT_FALSE(CI == MBI);
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ASSERT_FALSE(CI == &MBI);
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ASSERT_FALSE(CI == CMBI);
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ASSERT_FALSE(CI == &CMBI);
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ASSERT_FALSE(MBI.getIterator() == I);
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ASSERT_FALSE(CMBI.getIterator() == I);
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ASSERT_FALSE(I == MBI.getIterator());
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ASSERT_FALSE(I == CMBI.getIterator());
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ASSERT_FALSE(MBI.getIterator() == CI);
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ASSERT_FALSE(CMBI.getIterator() == CI);
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ASSERT_FALSE(CI == MBI.getIterator());
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ASSERT_FALSE(CI == CMBI.getIterator());
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ASSERT_TRUE(MBI != I);
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ASSERT_TRUE(&MBI != I);
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ASSERT_TRUE(CMBI != I);
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ASSERT_TRUE(&CMBI != I);
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ASSERT_TRUE(I != MBI);
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ASSERT_TRUE(I != &MBI);
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ASSERT_TRUE(I != CMBI);
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ASSERT_TRUE(I != &CMBI);
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ASSERT_TRUE(MBI != CI);
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ASSERT_TRUE(&MBI != CI);
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ASSERT_TRUE(CMBI != CI);
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ASSERT_TRUE(&CMBI != CI);
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ASSERT_TRUE(CI != MBI);
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ASSERT_TRUE(CI != &MBI);
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ASSERT_TRUE(CI != CMBI);
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ASSERT_TRUE(CI != &CMBI);
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ASSERT_TRUE(MBI.getIterator() != I);
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ASSERT_TRUE(CMBI.getIterator() != I);
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ASSERT_TRUE(I != MBI.getIterator());
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ASSERT_TRUE(I != CMBI.getIterator());
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ASSERT_TRUE(MBI.getIterator() != CI);
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ASSERT_TRUE(CMBI.getIterator() != CI);
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ASSERT_TRUE(CI != MBI.getIterator());
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ASSERT_TRUE(CI != CMBI.getIterator());
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}
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} // end namespace
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