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2a55cf5af8
This adds two declarative configuration options for intrusive lists
(available for simple_ilist, iplist, and ilist). Both of these options
affect ilist_node interoperability and need to be passed both to the
node and the list. Instead of adding a new traits class, they're
specified as optional template parameters (in any order).
The two options:
1. Pass ilist_sentinel_tracking<true> or ilist_sentinel_tracking<false>
to control whether there's a bit on ilist_node "prev" pointer
indicating whether it's the sentinel. The default behaviour is to
use a bit if and only if LLVM_ENABLE_ABI_BREAKING_CHECKS.
2. Pass ilist_tag<TagA> and ilist_tag<TagB> to allow insertion of a
single node into two different lists (simultaneously).
I have an immediate use-case for (1) ilist_sentinel_tracking: fixing the
validation semantics of MachineBasicBlock::reverse_iterator to match
ilist::reverse_iterator (ala r280032: see the comments at the end of the
commit message there). I'm adding (2) ilist_tag in the same commit to
validate that the options framework supports expansion. Justin Bogner
mentioned this might enable a possible cleanup in SelectionDAG, but I'll
leave this to others to explore. In the meantime, the unit tests and
the comments for simple_ilist and ilist_node have usage examples.
Note that there's a layer of indirection to support optional,
out-of-order, template paramaters. Internal classes are templated on an
instantiation of the non-variadic ilist_detail::node_options.
User-facing classes use ilist_detail::compute_node_options to compute
the correct instantiation of ilist_detail::node_options.
The comments for ilist_detail::is_valid_option describe how to add new
options (e.g., ilist_packed_int<int NumBits>).
llvm-svn: 281167
167 lines
4.4 KiB
C++
167 lines
4.4 KiB
C++
//===- unittests/ADT/IListBaseTest.cpp - ilist_base unit tests ------------===//
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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_base.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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// Test fixture.
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template <typename T> class IListBaseTest : public ::testing::Test {};
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// Test variants with the same test.
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typedef ::testing::Types<ilist_base<false>, ilist_base<true>>
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IListBaseTestTypes;
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TYPED_TEST_CASE(IListBaseTest, IListBaseTestTypes);
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TYPED_TEST(IListBaseTest, insertBeforeImpl) {
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typedef TypeParam list_base_type;
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typedef typename list_base_type::node_base_type node_base_type;
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node_base_type S, A, B;
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// [S] <-> [S]
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S.setPrev(&S);
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S.setNext(&S);
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// [S] <-> A <-> [S]
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list_base_type::insertBeforeImpl(S, A);
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EXPECT_EQ(&A, S.getPrev());
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EXPECT_EQ(&S, A.getPrev());
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EXPECT_EQ(&A, S.getNext());
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EXPECT_EQ(&S, A.getNext());
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// [S] <-> A <-> B <-> [S]
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list_base_type::insertBeforeImpl(S, B);
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EXPECT_EQ(&B, S.getPrev());
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EXPECT_EQ(&A, B.getPrev());
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EXPECT_EQ(&S, A.getPrev());
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EXPECT_EQ(&A, S.getNext());
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EXPECT_EQ(&B, A.getNext());
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EXPECT_EQ(&S, B.getNext());
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}
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TYPED_TEST(IListBaseTest, removeImpl) {
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typedef TypeParam list_base_type;
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typedef typename list_base_type::node_base_type node_base_type;
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node_base_type S, A, B;
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// [S] <-> A <-> B <-> [S]
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S.setPrev(&S);
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S.setNext(&S);
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list_base_type::insertBeforeImpl(S, A);
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list_base_type::insertBeforeImpl(S, B);
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// [S] <-> B <-> [S]
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list_base_type::removeImpl(A);
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EXPECT_EQ(&B, S.getPrev());
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EXPECT_EQ(&S, B.getPrev());
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EXPECT_EQ(&B, S.getNext());
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EXPECT_EQ(&S, B.getNext());
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EXPECT_EQ(nullptr, A.getPrev());
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EXPECT_EQ(nullptr, A.getNext());
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// [S] <-> [S]
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list_base_type::removeImpl(B);
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EXPECT_EQ(&S, S.getPrev());
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EXPECT_EQ(&S, S.getNext());
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EXPECT_EQ(nullptr, B.getPrev());
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EXPECT_EQ(nullptr, B.getNext());
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}
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TYPED_TEST(IListBaseTest, removeRangeImpl) {
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typedef TypeParam list_base_type;
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typedef typename list_base_type::node_base_type node_base_type;
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node_base_type S, A, B, C, D;
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// [S] <-> A <-> B <-> C <-> D <-> [S]
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S.setPrev(&S);
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S.setNext(&S);
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list_base_type::insertBeforeImpl(S, A);
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list_base_type::insertBeforeImpl(S, B);
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list_base_type::insertBeforeImpl(S, C);
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list_base_type::insertBeforeImpl(S, D);
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// [S] <-> A <-> D <-> [S]
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list_base_type::removeRangeImpl(B, D);
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EXPECT_EQ(&D, S.getPrev());
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EXPECT_EQ(&A, D.getPrev());
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EXPECT_EQ(&S, A.getPrev());
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EXPECT_EQ(&A, S.getNext());
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EXPECT_EQ(&D, A.getNext());
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EXPECT_EQ(&S, D.getNext());
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EXPECT_EQ(nullptr, B.getPrev());
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EXPECT_EQ(nullptr, C.getNext());
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}
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TYPED_TEST(IListBaseTest, removeRangeImplAllButSentinel) {
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typedef TypeParam list_base_type;
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typedef typename list_base_type::node_base_type node_base_type;
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node_base_type S, A, B;
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// [S] <-> A <-> B <-> [S]
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S.setPrev(&S);
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S.setNext(&S);
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list_base_type::insertBeforeImpl(S, A);
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list_base_type::insertBeforeImpl(S, B);
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// [S] <-> [S]
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list_base_type::removeRangeImpl(A, S);
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EXPECT_EQ(&S, S.getPrev());
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EXPECT_EQ(&S, S.getNext());
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EXPECT_EQ(nullptr, A.getPrev());
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EXPECT_EQ(nullptr, B.getNext());
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}
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TYPED_TEST(IListBaseTest, transferBeforeImpl) {
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typedef TypeParam list_base_type;
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typedef typename list_base_type::node_base_type node_base_type;
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node_base_type S1, S2, A, B, C, D, E;
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// [S1] <-> A <-> B <-> C <-> [S1]
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S1.setPrev(&S1);
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S1.setNext(&S1);
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list_base_type::insertBeforeImpl(S1, A);
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list_base_type::insertBeforeImpl(S1, B);
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list_base_type::insertBeforeImpl(S1, C);
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// [S2] <-> D <-> E <-> [S2]
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S2.setPrev(&S2);
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S2.setNext(&S2);
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list_base_type::insertBeforeImpl(S2, D);
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list_base_type::insertBeforeImpl(S2, E);
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// [S1] <-> C <-> [S1]
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list_base_type::transferBeforeImpl(D, A, C);
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EXPECT_EQ(&C, S1.getPrev());
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EXPECT_EQ(&S1, C.getPrev());
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EXPECT_EQ(&C, S1.getNext());
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EXPECT_EQ(&S1, C.getNext());
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// [S2] <-> A <-> B <-> D <-> E <-> [S2]
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EXPECT_EQ(&E, S2.getPrev());
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EXPECT_EQ(&D, E.getPrev());
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EXPECT_EQ(&B, D.getPrev());
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EXPECT_EQ(&A, B.getPrev());
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EXPECT_EQ(&S2, A.getPrev());
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EXPECT_EQ(&A, S2.getNext());
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EXPECT_EQ(&B, A.getNext());
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EXPECT_EQ(&D, B.getNext());
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EXPECT_EQ(&E, D.getNext());
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EXPECT_EQ(&S2, E.getNext());
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}
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} // end namespace
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