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llvm-mirror/unittests/ADT/BitVectorTest.cpp
Chandler Carruth ae65e281f3 Update the file headers across all of the LLVM projects in the monorepo 
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00

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//===- llvm/unittest/ADT/BitVectorTest.cpp - BitVector tests --------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// Some of these tests fail on PowerPC for unknown reasons.
#ifndef __ppc__
#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/SmallBitVector.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
// Test fixture
template <typename T>
class BitVectorTest : public ::testing::Test { };
// Test both BitVector and SmallBitVector with the same suite of tests.
typedef ::testing::Types<BitVector, SmallBitVector> BitVectorTestTypes;
TYPED_TEST_CASE(BitVectorTest, BitVectorTestTypes);
TYPED_TEST(BitVectorTest, TrivialOperation) {
TypeParam Vec;
EXPECT_EQ(0U, Vec.count());
EXPECT_EQ(0U, Vec.size());
EXPECT_FALSE(Vec.any());
EXPECT_TRUE(Vec.all());
EXPECT_TRUE(Vec.none());
EXPECT_TRUE(Vec.empty());
Vec.resize(5, true);
EXPECT_EQ(5U, Vec.count());
EXPECT_EQ(5U, Vec.size());
EXPECT_TRUE(Vec.any());
EXPECT_TRUE(Vec.all());
EXPECT_FALSE(Vec.none());
EXPECT_FALSE(Vec.empty());
Vec.resize(11);
EXPECT_EQ(5U, Vec.count());
EXPECT_EQ(11U, Vec.size());
EXPECT_TRUE(Vec.any());
EXPECT_FALSE(Vec.all());
EXPECT_FALSE(Vec.none());
EXPECT_FALSE(Vec.empty());
TypeParam Inv = Vec;
Inv.flip();
EXPECT_EQ(6U, Inv.count());
EXPECT_EQ(11U, Inv.size());
EXPECT_TRUE(Inv.any());
EXPECT_FALSE(Inv.all());
EXPECT_FALSE(Inv.none());
EXPECT_FALSE(Inv.empty());
EXPECT_FALSE(Inv == Vec);
EXPECT_TRUE(Inv != Vec);
Vec.flip();
EXPECT_TRUE(Inv == Vec);
EXPECT_FALSE(Inv != Vec);
// Add some "interesting" data to Vec.
Vec.resize(23, true);
Vec.resize(25, false);
Vec.resize(26, true);
Vec.resize(29, false);
Vec.resize(33, true);
Vec.resize(57, false);
unsigned Count = 0;
for (unsigned i = Vec.find_first(); i != -1u; i = Vec.find_next(i)) {
++Count;
EXPECT_TRUE(Vec[i]);
EXPECT_TRUE(Vec.test(i));
}
EXPECT_EQ(Count, Vec.count());
EXPECT_EQ(Count, 23u);
EXPECT_FALSE(Vec[0]);
EXPECT_TRUE(Vec[32]);
EXPECT_FALSE(Vec[56]);
Vec.resize(61, false);
TypeParam Copy = Vec;
TypeParam Alt(3, false);
Alt.resize(6, true);
std::swap(Alt, Vec);
EXPECT_TRUE(Copy == Alt);
EXPECT_TRUE(Vec.size() == 6);
EXPECT_TRUE(Vec.count() == 3);
EXPECT_TRUE(Vec.find_first() == 3);
std::swap(Copy, Vec);
// Add some more "interesting" data.
Vec.resize(68, true);
Vec.resize(78, false);
Vec.resize(89, true);
Vec.resize(90, false);
Vec.resize(91, true);
Vec.resize(130, false);
Count = 0;
for (unsigned i = Vec.find_first(); i != -1u; i = Vec.find_next(i)) {
++Count;
EXPECT_TRUE(Vec[i]);
EXPECT_TRUE(Vec.test(i));
}
EXPECT_EQ(Count, Vec.count());
EXPECT_EQ(Count, 42u);
EXPECT_FALSE(Vec[0]);
EXPECT_TRUE(Vec[32]);
EXPECT_FALSE(Vec[60]);
EXPECT_FALSE(Vec[129]);
Vec.flip(60);
EXPECT_TRUE(Vec[60]);
EXPECT_EQ(Count + 1, Vec.count());
Vec.flip(60);
EXPECT_FALSE(Vec[60]);
EXPECT_EQ(Count, Vec.count());
Vec.reset(32);
EXPECT_FALSE(Vec[32]);
EXPECT_EQ(Count - 1, Vec.count());
Vec.set(32);
EXPECT_TRUE(Vec[32]);
EXPECT_EQ(Count, Vec.count());
Vec.flip();
EXPECT_EQ(Vec.size() - Count, Vec.count());
Vec.reset();
EXPECT_EQ(0U, Vec.count());
EXPECT_EQ(130U, Vec.size());
EXPECT_FALSE(Vec.any());
EXPECT_FALSE(Vec.all());
EXPECT_TRUE(Vec.none());
EXPECT_FALSE(Vec.empty());
Vec.flip();
EXPECT_EQ(130U, Vec.count());
EXPECT_EQ(130U, Vec.size());
EXPECT_TRUE(Vec.any());
EXPECT_TRUE(Vec.all());
EXPECT_FALSE(Vec.none());
EXPECT_FALSE(Vec.empty());
Vec.resize(64);
EXPECT_EQ(64U, Vec.count());
EXPECT_EQ(64U, Vec.size());
EXPECT_TRUE(Vec.any());
EXPECT_TRUE(Vec.all());
EXPECT_FALSE(Vec.none());
EXPECT_FALSE(Vec.empty());
Vec.flip();
EXPECT_EQ(0U, Vec.count());
EXPECT_EQ(64U, Vec.size());
EXPECT_FALSE(Vec.any());
EXPECT_FALSE(Vec.all());
EXPECT_TRUE(Vec.none());
EXPECT_FALSE(Vec.empty());
Inv = TypeParam().flip();
EXPECT_EQ(0U, Inv.count());
EXPECT_EQ(0U, Inv.size());
EXPECT_FALSE(Inv.any());
EXPECT_TRUE(Inv.all());
EXPECT_TRUE(Inv.none());
EXPECT_TRUE(Inv.empty());
Vec.clear();
EXPECT_EQ(0U, Vec.count());
EXPECT_EQ(0U, Vec.size());
EXPECT_FALSE(Vec.any());
EXPECT_TRUE(Vec.all());
EXPECT_TRUE(Vec.none());
EXPECT_TRUE(Vec.empty());
}
TYPED_TEST(BitVectorTest, SimpleFindOpsMultiWord) {
TypeParam A;
// Test finding next set and unset bits in a BitVector with multiple words
A.resize(100);
A.set(12);
A.set(13);
A.set(75);
EXPECT_EQ(75, A.find_last());
EXPECT_EQ(12, A.find_first());
EXPECT_EQ(13, A.find_next(12));
EXPECT_EQ(75, A.find_next(13));
EXPECT_EQ(-1, A.find_next(75));
EXPECT_EQ(-1, A.find_prev(12));
EXPECT_EQ(12, A.find_prev(13));
EXPECT_EQ(13, A.find_prev(75));
EXPECT_EQ(75, A.find_prev(90));
EXPECT_EQ(0, A.find_first_unset());
EXPECT_EQ(99, A.find_last_unset());
EXPECT_EQ(14, A.find_next_unset(11));
EXPECT_EQ(14, A.find_next_unset(12));
EXPECT_EQ(14, A.find_next_unset(13));
EXPECT_EQ(16, A.find_next_unset(15));
EXPECT_EQ(76, A.find_next_unset(74));
EXPECT_EQ(76, A.find_next_unset(75));
EXPECT_EQ(-1, A.find_next_unset(99));
A.set(0, 100);
EXPECT_EQ(100U, A.count());
EXPECT_EQ(0, A.find_first());
EXPECT_EQ(-1, A.find_first_unset());
EXPECT_EQ(-1, A.find_last_unset());
EXPECT_EQ(99, A.find_last());
EXPECT_EQ(99, A.find_next(98));
A.reset(0, 100);
EXPECT_EQ(0U, A.count());
EXPECT_EQ(-1, A.find_first());
EXPECT_EQ(-1, A.find_last());
EXPECT_EQ(0, A.find_first_unset());
EXPECT_EQ(99, A.find_last_unset());
EXPECT_EQ(99, A.find_next_unset(98));
}
// Check if a SmallBitVector is in small mode. This check is used in tests
// that run for both SmallBitVector and BitVector. This check doesn't apply
// to BitVector so we provide an overload that returns true to get the tests
// to compile.
static bool SmallBitVectorIsSmallMode(const SmallBitVector &bv) {
return bv.isSmall();
}
static bool SmallBitVectorIsSmallMode(const BitVector &) { return true; }
// These tests are intended to exercise the single-word case of BitVector
// and the small-mode case of SmallBitVector.
TYPED_TEST(BitVectorTest, SimpleFindOpsSingleWord) {
// Test finding in an empty BitVector.
TypeParam A;
ASSERT_TRUE(SmallBitVectorIsSmallMode(A));
EXPECT_EQ(-1, A.find_first());
EXPECT_EQ(-1, A.find_last());
EXPECT_EQ(-1, A.find_first_unset());
EXPECT_EQ(-1, A.find_last_unset());
A.resize(20);
A.set(3);
A.set(4);
A.set(16);
ASSERT_TRUE(SmallBitVectorIsSmallMode(A));
EXPECT_EQ(16, A.find_last());
EXPECT_EQ(3, A.find_first());
EXPECT_EQ(3, A.find_next(1));
EXPECT_EQ(4, A.find_next(3));
EXPECT_EQ(16, A.find_next(4));
EXPECT_EQ(-1, A.find_next(16));
EXPECT_EQ(-1, A.find_prev(3));
EXPECT_EQ(3, A.find_prev(4));
EXPECT_EQ(4, A.find_prev(16));
EXPECT_EQ(16, A.find_prev(18));
EXPECT_EQ(0, A.find_first_unset());
EXPECT_EQ(19, A.find_last_unset());
EXPECT_EQ(5, A.find_next_unset(3));
EXPECT_EQ(5, A.find_next_unset(4));
EXPECT_EQ(13, A.find_next_unset(12));
EXPECT_EQ(17, A.find_next_unset(15));
}
TEST(BitVectorTest, FindInRangeMultiWord) {
BitVector Vec;
Vec.resize(200);
Vec.set(3, 7);
Vec.set(24, 35);
Vec.set(50, 70);
Vec.set(150);
Vec.set(152);
Vec.set(154);
// find first
EXPECT_EQ(-1, Vec.find_first_in(0, 0));
EXPECT_EQ(-1, Vec.find_first_in(24, 24));
EXPECT_EQ(-1, Vec.find_first_in(7, 24));
EXPECT_EQ(3, Vec.find_first_in(0, 10));
EXPECT_EQ(4, Vec.find_first_in(4, 10));
EXPECT_EQ(150, Vec.find_first_in(100, 200));
EXPECT_EQ(152, Vec.find_first_in(151, 200));
EXPECT_EQ(154, Vec.find_first_in(153, 200));
EXPECT_EQ(-1, Vec.find_first_in(155, 200));
Vec.set(199);
EXPECT_EQ(199, Vec.find_first_in(199, 200));
Vec.reset(199);
// find last
EXPECT_EQ(-1, Vec.find_last_in(0, 0));
EXPECT_EQ(-1, Vec.find_last_in(24, 24));
EXPECT_EQ(-1, Vec.find_last_in(7, 24));
EXPECT_EQ(6, Vec.find_last_in(0, 10));
EXPECT_EQ(5, Vec.find_last_in(0, 6));
EXPECT_EQ(154, Vec.find_last_in(100, 155));
EXPECT_EQ(152, Vec.find_last_in(100, 154));
EXPECT_EQ(150, Vec.find_last_in(100, 152));
EXPECT_EQ(-1, Vec.find_last_in(100, 150));
Vec.set(199);
EXPECT_EQ(199, Vec.find_last_in(199, 200));
Vec.reset(199);
// find first unset
EXPECT_EQ(-1, Vec.find_first_unset_in(0, 0));
EXPECT_EQ(-1, Vec.find_first_unset_in(23, 23));
EXPECT_EQ(-1, Vec.find_first_unset_in(24, 35));
EXPECT_EQ(0, Vec.find_first_unset_in(0, 10));
EXPECT_EQ(1, Vec.find_first_unset_in(1, 10));
EXPECT_EQ(7, Vec.find_first_unset_in(5, 25));
EXPECT_EQ(151, Vec.find_first_unset_in(150, 200));
EXPECT_EQ(151, Vec.find_first_unset_in(151, 200));
EXPECT_EQ(153, Vec.find_first_unset_in(152, 200));
EXPECT_EQ(153, Vec.find_first_unset_in(153, 200));
EXPECT_EQ(155, Vec.find_first_unset_in(154, 200));
EXPECT_EQ(155, Vec.find_first_unset_in(155, 200));
EXPECT_EQ(199, Vec.find_first_unset_in(199, 200));
// find last unset
EXPECT_EQ(-1, Vec.find_last_unset_in(0, 0));
EXPECT_EQ(-1, Vec.find_last_unset_in(23, 23));
EXPECT_EQ(-1, Vec.find_last_unset_in(24, 35));
EXPECT_EQ(9, Vec.find_last_unset_in(0, 10));
EXPECT_EQ(8, Vec.find_last_unset_in(0, 9));
EXPECT_EQ(2, Vec.find_last_unset_in(0, 7));
EXPECT_EQ(149, Vec.find_last_unset_in(100, 151));
EXPECT_EQ(151, Vec.find_last_unset_in(100, 152));
EXPECT_EQ(151, Vec.find_last_unset_in(100, 153));
EXPECT_EQ(153, Vec.find_last_unset_in(100, 154));
EXPECT_EQ(153, Vec.find_last_unset_in(100, 155));
EXPECT_EQ(155, Vec.find_last_unset_in(100, 156));
EXPECT_EQ(199, Vec.find_last_unset_in(199, 200));
}
TEST(BitVectorTest, FindInRangeSingleWord) {
// When the bit vector contains only a single word, this is slightly different
// than when the bit vector contains multiple words, because masks are applied
// to the front and back of the same word. So make sure this works.
BitVector Vec;
Vec.resize(25);
Vec.set(2, 4);
Vec.set(6, 9);
Vec.set(12, 15);
Vec.set(19);
Vec.set(21);
Vec.set(23);
// find first
EXPECT_EQ(-1, Vec.find_first_in(0, 0));
EXPECT_EQ(-1, Vec.find_first_in(24, 24));
EXPECT_EQ(-1, Vec.find_first_in(9, 12));
EXPECT_EQ(2, Vec.find_first_in(0, 10));
EXPECT_EQ(6, Vec.find_first_in(4, 10));
EXPECT_EQ(19, Vec.find_first_in(18, 25));
EXPECT_EQ(21, Vec.find_first_in(20, 25));
EXPECT_EQ(23, Vec.find_first_in(22, 25));
EXPECT_EQ(-1, Vec.find_first_in(24, 25));
// find last
EXPECT_EQ(-1, Vec.find_last_in(0, 0));
EXPECT_EQ(-1, Vec.find_last_in(24, 24));
EXPECT_EQ(-1, Vec.find_last_in(9, 12));
EXPECT_EQ(8, Vec.find_last_in(0, 10));
EXPECT_EQ(3, Vec.find_last_in(0, 6));
EXPECT_EQ(23, Vec.find_last_in(18, 25));
EXPECT_EQ(21, Vec.find_last_in(18, 23));
EXPECT_EQ(19, Vec.find_last_in(18, 21));
EXPECT_EQ(-1, Vec.find_last_in(18, 19));
// find first unset
EXPECT_EQ(-1, Vec.find_first_unset_in(0, 0));
EXPECT_EQ(-1, Vec.find_first_unset_in(23, 23));
EXPECT_EQ(-1, Vec.find_first_unset_in(6, 9));
EXPECT_EQ(0, Vec.find_first_unset_in(0, 6));
EXPECT_EQ(1, Vec.find_first_unset_in(1, 6));
EXPECT_EQ(9, Vec.find_first_unset_in(7, 13));
EXPECT_EQ(18, Vec.find_first_unset_in(18, 25));
EXPECT_EQ(20, Vec.find_first_unset_in(19, 25));
EXPECT_EQ(20, Vec.find_first_unset_in(20, 25));
EXPECT_EQ(22, Vec.find_first_unset_in(21, 25));
EXPECT_EQ(22, Vec.find_first_unset_in(22, 25));
EXPECT_EQ(24, Vec.find_first_unset_in(23, 25));
EXPECT_EQ(24, Vec.find_first_unset_in(24, 25));
// find last unset
EXPECT_EQ(-1, Vec.find_last_unset_in(0, 0));
EXPECT_EQ(-1, Vec.find_last_unset_in(23, 23));
EXPECT_EQ(-1, Vec.find_last_unset_in(6, 9));
EXPECT_EQ(5, Vec.find_last_unset_in(0, 6));
EXPECT_EQ(4, Vec.find_last_unset_in(0, 5));
EXPECT_EQ(1, Vec.find_last_unset_in(0, 4));
EXPECT_EQ(11, Vec.find_last_unset_in(7, 13));
EXPECT_EQ(24, Vec.find_last_unset_in(18, 25));
EXPECT_EQ(22, Vec.find_last_unset_in(18, 24));
EXPECT_EQ(22, Vec.find_last_unset_in(18, 23));
EXPECT_EQ(20, Vec.find_last_unset_in(18, 22));
EXPECT_EQ(20, Vec.find_last_unset_in(18, 21));
EXPECT_EQ(18, Vec.find_last_unset_in(18, 20));
EXPECT_EQ(18, Vec.find_last_unset_in(18, 19));
}
TYPED_TEST(BitVectorTest, CompoundAssignment) {
TypeParam A;
A.resize(10);
A.set(4);
A.set(7);
TypeParam B;
B.resize(50);
B.set(5);
B.set(18);
A |= B;
EXPECT_TRUE(A.test(4));
EXPECT_TRUE(A.test(5));
EXPECT_TRUE(A.test(7));
EXPECT_TRUE(A.test(18));
EXPECT_EQ(4U, A.count());
EXPECT_EQ(50U, A.size());
B.resize(10);
B.set();
B.reset(2);
B.reset(7);
A &= B;
EXPECT_FALSE(A.test(2));
EXPECT_FALSE(A.test(7));
EXPECT_TRUE(A.test(4));
EXPECT_TRUE(A.test(5));
EXPECT_EQ(2U, A.count());
EXPECT_EQ(50U, A.size());
B.resize(100);
B.set();
A ^= B;
EXPECT_TRUE(A.test(2));
EXPECT_TRUE(A.test(7));
EXPECT_EQ(98U, A.count());
EXPECT_EQ(100U, A.size());
}
// Test SmallBitVector operations with mixed big/small representations
TYPED_TEST(BitVectorTest, MixedBigSmall) {
{
TypeParam Big;
TypeParam Small;
Big.reserve(100);
Big.resize(20);
Small.resize(10);
Small.set(0);
Small.set(1);
Big.set(0);
Big.set(2);
Big.set(16);
Small &= Big;
EXPECT_TRUE(Small.test(0));
EXPECT_EQ(1u, Small.count());
// FIXME BitVector and SmallBitVector behave differently here.
// SmallBitVector resizes the LHS to max(LHS.size(), RHS.size())
// but BitVector does not.
// EXPECT_EQ(20u, Small.size());
}
{
TypeParam Big;
TypeParam Small;
Big.reserve(100);
Big.resize(20);
Small.resize(10);
Small.set(0);
Small.set(1);
Big.set(0);
Big.set(2);
Big.set(16);
Big &= Small;
EXPECT_TRUE(Big.test(0));
EXPECT_EQ(1u, Big.count());
// FIXME BitVector and SmallBitVector behave differently here.
// SmallBitVector resizes the LHS to max(LHS.size(), RHS.size())
// but BitVector does not.
// EXPECT_EQ(20u, Big.size());
}
{
TypeParam Big;
TypeParam Small;
Big.reserve(100);
Big.resize(20);
Small.resize(10);
Small.set(0);
Small.set(1);
Big.set(0);
Big.set(2);
Big.set(16);
Small |= Big;
EXPECT_TRUE(Small.test(0));
EXPECT_TRUE(Small.test(1));
EXPECT_TRUE(Small.test(2));
EXPECT_TRUE(Small.test(16));
EXPECT_EQ(4u, Small.count());
EXPECT_EQ(20u, Small.size());
}
{
TypeParam Big;
TypeParam Small;
Big.reserve(100);
Big.resize(20);
Small.resize(10);
Small.set(0);
Small.set(1);
Big.set(0);
Big.set(2);
Big.set(16);
Big |= Small;
EXPECT_TRUE(Big.test(0));
EXPECT_TRUE(Big.test(1));
EXPECT_TRUE(Big.test(2));
EXPECT_TRUE(Big.test(16));
EXPECT_EQ(4u, Big.count());
EXPECT_EQ(20u, Big.size());
}
{
TypeParam Big;
TypeParam Small;
Big.reserve(100);
Big.resize(20);
Small.resize(10);
Small.set(0);
Small.set(1);
Big.set(0);
Big.set(2);
Big.set(16);
Small ^= Big;
EXPECT_TRUE(Small.test(1));
EXPECT_TRUE(Small.test(2));
EXPECT_TRUE(Small.test(16));
EXPECT_EQ(3u, Small.count());
EXPECT_EQ(20u, Small.size());
}
{
TypeParam Big;
TypeParam Small;
Big.reserve(100);
Big.resize(20);
Small.resize(10);
Small.set(0);
Small.set(1);
Big.set(0);
Big.set(2);
Big.set(16);
Big ^= Small;
EXPECT_TRUE(Big.test(1));
EXPECT_TRUE(Big.test(2));
EXPECT_TRUE(Big.test(16));
EXPECT_EQ(3u, Big.count());
EXPECT_EQ(20u, Big.size());
}
{
TypeParam Big;
TypeParam Small;
Big.reserve(100);
Big.resize(20);
Small.resize(10);
Small.set(0);
Small.set(1);
Big.set(0);
Big.set(2);
Big.set(16);
Small.reset(Big);
EXPECT_TRUE(Small.test(1));
EXPECT_EQ(1u, Small.count());
EXPECT_EQ(10u, Small.size());
}
{
TypeParam Big;
TypeParam Small;
Big.reserve(100);
Big.resize(20);
Small.resize(10);
Small.set(0);
Small.set(1);
Big.set(0);
Big.set(2);
Big.set(16);
Big.reset(Small);
EXPECT_TRUE(Big.test(2));
EXPECT_TRUE(Big.test(16));
EXPECT_EQ(2u, Big.count());
EXPECT_EQ(20u, Big.size());
}
{
TypeParam Big;
TypeParam Small;
Big.reserve(100);
Big.resize(10);
Small.resize(10);
Small.set(0);
Small.set(1);
Big.set(0);
EXPECT_FALSE(Big == Small);
EXPECT_FALSE(Small == Big);
Big.set(1);
EXPECT_TRUE(Big == Small);
EXPECT_TRUE(Small == Big);
}
{
TypeParam Big;
TypeParam Small;
Big.reserve(100);
Big.resize(20);
Small.resize(10);
Small.set(0);
Big.set(1);
EXPECT_FALSE(Small.anyCommon(Big));
EXPECT_FALSE(Big.anyCommon(Small));
Big.set(0);
EXPECT_TRUE(Small.anyCommon(Big));
EXPECT_TRUE(Big.anyCommon(Small));
}
{
TypeParam Big;
TypeParam Small;
Big.reserve(100);
Big.resize(10);
Small.resize(10);
Small.set(0);
Small.set(1);
Big.set(0);
EXPECT_TRUE(Small.test(Big));
EXPECT_FALSE(Big.test(Small));
Big.set(1);
EXPECT_FALSE(Small.test(Big));
EXPECT_FALSE(Big.test(Small));
}
}
TYPED_TEST(BitVectorTest, ProxyIndex) {
TypeParam Vec(3);
EXPECT_TRUE(Vec.none());
Vec[0] = Vec[1] = Vec[2] = true;
EXPECT_EQ(Vec.size(), Vec.count());
Vec[2] = Vec[1] = Vec[0] = false;
EXPECT_TRUE(Vec.none());
}
TYPED_TEST(BitVectorTest, PortableBitMask) {
TypeParam A;
const uint32_t Mask1[] = { 0x80000000, 6, 5 };
A.resize(10);
A.setBitsInMask(Mask1, 1);
EXPECT_EQ(10u, A.size());
EXPECT_FALSE(A.test(0));
A.resize(32);
A.setBitsInMask(Mask1, 1);
EXPECT_FALSE(A.test(0));
EXPECT_TRUE(A.test(31));
EXPECT_EQ(1u, A.count());
A.resize(33);
A.setBitsInMask(Mask1, 1);
EXPECT_EQ(1u, A.count());
A.setBitsInMask(Mask1, 2);
EXPECT_EQ(1u, A.count());
A.resize(34);
A.setBitsInMask(Mask1, 2);
EXPECT_EQ(2u, A.count());
A.resize(65);
A.setBitsInMask(Mask1, 3);
EXPECT_EQ(4u, A.count());
A.setBitsNotInMask(Mask1, 1);
EXPECT_EQ(32u+3u, A.count());
A.setBitsNotInMask(Mask1, 3);
EXPECT_EQ(65u, A.count());
A.resize(96);
EXPECT_EQ(65u, A.count());
A.clear();
A.resize(128);
A.setBitsNotInMask(Mask1, 3);
EXPECT_EQ(96u-5u, A.count());
A.clearBitsNotInMask(Mask1, 1);
EXPECT_EQ(64-4u, A.count());
}
TYPED_TEST(BitVectorTest, BinOps) {
TypeParam A;
TypeParam B;
A.resize(65);
EXPECT_FALSE(A.anyCommon(B));
EXPECT_FALSE(B.anyCommon(B));
B.resize(64);
A.set(64);
EXPECT_FALSE(A.anyCommon(B));
EXPECT_FALSE(B.anyCommon(A));
B.set(63);
EXPECT_FALSE(A.anyCommon(B));
EXPECT_FALSE(B.anyCommon(A));
A.set(63);
EXPECT_TRUE(A.anyCommon(B));
EXPECT_TRUE(B.anyCommon(A));
B.resize(70);
B.set(64);
B.reset(63);
A.resize(64);
EXPECT_FALSE(A.anyCommon(B));
EXPECT_FALSE(B.anyCommon(A));
}
typedef std::vector<std::pair<int, int>> RangeList;
template <typename VecType>
static inline VecType createBitVector(uint32_t Size,
const RangeList &setRanges) {
VecType V;
V.resize(Size);
for (auto &R : setRanges)
V.set(R.first, R.second);
return V;
}
TYPED_TEST(BitVectorTest, ShiftOpsSingleWord) {
// Test that shift ops work when the desired shift amount is less
// than one word.
// 1. Case where the number of bits in the BitVector also fit into a single
// word.
TypeParam A = createBitVector<TypeParam>(12, {{2, 4}, {8, 10}});
TypeParam B = A;
EXPECT_EQ(4U, A.count());
EXPECT_TRUE(A.test(2));
EXPECT_TRUE(A.test(3));
EXPECT_TRUE(A.test(8));
EXPECT_TRUE(A.test(9));
A >>= 1;
EXPECT_EQ(createBitVector<TypeParam>(12, {{1, 3}, {7, 9}}), A);
A <<= 1;
EXPECT_EQ(B, A);
A >>= 10;
EXPECT_EQ(createBitVector<TypeParam>(12, {}), A);
A = B;
A <<= 10;
EXPECT_EQ(createBitVector<TypeParam>(12, {}), A);
// 2. Case where the number of bits in the BitVector do not fit into a single
// word.
// 31----------------------------------------------------------------------0
// XXXXXXXX XXXXXXXX XXXXXXXX 00000111 | 11111110 00000000 00001111 11111111
A = createBitVector<TypeParam>(40, {{0, 12}, {25, 35}});
EXPECT_EQ(40U, A.size());
EXPECT_EQ(22U, A.count());
// 2a. Make sure that left shifting some 1 bits out of the vector works.
// 31----------------------------------------------------------------------0
// Before:
// XXXXXXXX XXXXXXXX XXXXXXXX 00000111 | 11111110 00000000 00001111 11111111
// After:
// XXXXXXXX XXXXXXXX XXXXXXXX 11111100 | 00000000 00011111 11111110 00000000
A <<= 9;
EXPECT_EQ(createBitVector<TypeParam>(40, {{9, 21}, {34, 40}}), A);
// 2b. Make sure that keeping the number of one bits unchanged works.
// 31----------------------------------------------------------------------0
// Before:
// XXXXXXXX XXXXXXXX XXXXXXXX 11111100 | 00000000 00011111 11111110 00000000
// After:
// XXXXXXXX XXXXXXXX XXXXXXXX 00000011 | 11110000 00000000 01111111 11111000
A >>= 6;
EXPECT_EQ(createBitVector<TypeParam>(40, {{3, 15}, {28, 34}}), A);
// 2c. Make sure that right shifting some 1 bits out of the vector works.
// 31----------------------------------------------------------------------0
// Before:
// XXXXXXXX XXXXXXXX XXXXXXXX 00000011 | 11110000 00000000 01111111 11111000
// After:
// XXXXXXXX XXXXXXXX XXXXXXXX 00000000 | 00000000 11111100 00000000 00011111
A >>= 10;
EXPECT_EQ(createBitVector<TypeParam>(40, {{0, 5}, {18, 24}}), A);
// 3. Big test.
A = createBitVector<TypeParam>(300, {{1, 30}, {60, 95}, {200, 275}});
A <<= 29;
EXPECT_EQ(createBitVector<TypeParam>(
300, {{1 + 29, 30 + 29}, {60 + 29, 95 + 29}, {200 + 29, 300}}),
A);
}
TYPED_TEST(BitVectorTest, ShiftOpsMultiWord) {
// Test that shift ops work when the desired shift amount is greater than or
// equal to the size of a single word.
auto A = createBitVector<TypeParam>(300, {{1, 30}, {60, 95}, {200, 275}});
// Make a copy so we can re-use it later.
auto B = A;
// 1. Shift left by an exact multiple of the word size. This should invoke
// only a memmove and no per-word bit operations.
A <<= 64;
auto Expected = createBitVector<TypeParam>(
300, {{1 + 64, 30 + 64}, {60 + 64, 95 + 64}, {200 + 64, 300}});
EXPECT_EQ(Expected, A);
// 2. Shift left by a non multiple of the word size. This should invoke both
// a memmove and per-word bit operations.
A = B;
A <<= 93;
EXPECT_EQ(createBitVector<TypeParam>(
300, {{1 + 93, 30 + 93}, {60 + 93, 95 + 93}, {200 + 93, 300}}),
A);
// 1. Shift right by an exact multiple of the word size. This should invoke
// only a memmove and no per-word bit operations.
A = B;
A >>= 64;
EXPECT_EQ(
createBitVector<TypeParam>(300, {{0, 95 - 64}, {200 - 64, 275 - 64}}), A);
// 2. Shift left by a non multiple of the word size. This should invoke both
// a memmove and per-word bit operations.
A = B;
A >>= 93;
EXPECT_EQ(
createBitVector<TypeParam>(300, {{0, 95 - 93}, {200 - 93, 275 - 93}}), A);
}
TYPED_TEST(BitVectorTest, RangeOps) {
TypeParam A;
A.resize(256);
A.reset();
A.set(1, 255);
EXPECT_FALSE(A.test(0));
EXPECT_TRUE( A.test(1));
EXPECT_TRUE( A.test(23));
EXPECT_TRUE( A.test(254));
EXPECT_FALSE(A.test(255));
TypeParam B;
B.resize(256);
B.set();
B.reset(1, 255);
EXPECT_TRUE( B.test(0));
EXPECT_FALSE(B.test(1));
EXPECT_FALSE(B.test(23));
EXPECT_FALSE(B.test(254));
EXPECT_TRUE( B.test(255));
TypeParam C;
C.resize(3);
C.reset();
C.set(0, 1);
EXPECT_TRUE(C.test(0));
EXPECT_FALSE( C.test(1));
EXPECT_FALSE( C.test(2));
TypeParam D;
D.resize(3);
D.set();
D.reset(0, 1);
EXPECT_FALSE(D.test(0));
EXPECT_TRUE( D.test(1));
EXPECT_TRUE( D.test(2));
TypeParam E;
E.resize(128);
E.reset();
E.set(1, 33);
EXPECT_FALSE(E.test(0));
EXPECT_TRUE( E.test(1));
EXPECT_TRUE( E.test(32));
EXPECT_FALSE(E.test(33));
TypeParam BufferOverrun;
unsigned size = sizeof(unsigned long) * 8;
BufferOverrun.resize(size);
BufferOverrun.reset(0, size);
BufferOverrun.set(0, size);
}
TYPED_TEST(BitVectorTest, CompoundTestReset) {
TypeParam A(50, true);
TypeParam B(50, false);
TypeParam C(100, true);
TypeParam D(100, false);
EXPECT_FALSE(A.test(A));
EXPECT_TRUE(A.test(B));
EXPECT_FALSE(A.test(C));
EXPECT_TRUE(A.test(D));
EXPECT_FALSE(B.test(A));
EXPECT_FALSE(B.test(B));
EXPECT_FALSE(B.test(C));
EXPECT_FALSE(B.test(D));
EXPECT_TRUE(C.test(A));
EXPECT_TRUE(C.test(B));
EXPECT_FALSE(C.test(C));
EXPECT_TRUE(C.test(D));
A.reset(B);
A.reset(D);
EXPECT_TRUE(A.all());
A.reset(A);
EXPECT_TRUE(A.none());
A.set();
A.reset(C);
EXPECT_TRUE(A.none());
A.set();
C.reset(A);
EXPECT_EQ(50, C.find_first());
C.reset(C);
EXPECT_TRUE(C.none());
}
TYPED_TEST(BitVectorTest, MoveConstructor) {
TypeParam A(10, true);
TypeParam B(std::move(A));
// Check that the move ctor leaves the moved-from object in a valid state.
// The following line used to crash.
A = B;
TypeParam C(10, true);
EXPECT_EQ(C, A);
EXPECT_EQ(C, B);
}
TYPED_TEST(BitVectorTest, MoveAssignment) {
TypeParam A(10, true);
TypeParam B;
B = std::move(A);
// Check that move assignment leaves the moved-from object in a valid state.
// The following line used to crash.
A = B;
TypeParam C(10, true);
EXPECT_EQ(C, A);
EXPECT_EQ(C, B);
}
template<class TypeParam>
static void testEmpty(const TypeParam &A) {
EXPECT_TRUE(A.empty());
EXPECT_EQ((size_t)0, A.size());
EXPECT_EQ((size_t)0, A.count());
EXPECT_FALSE(A.any());
EXPECT_TRUE(A.all());
EXPECT_TRUE(A.none());
EXPECT_EQ(-1, A.find_first());
EXPECT_EQ(A, TypeParam());
}
/// Tests whether BitVector behaves well with Bits==nullptr, Capacity==0
TYPED_TEST(BitVectorTest, EmptyVector) {
TypeParam A;
testEmpty(A);
TypeParam B;
B.reset();
testEmpty(B);
TypeParam C;
C.clear();
testEmpty(C);
TypeParam D(A);
testEmpty(D);
TypeParam E;
E = A;
testEmpty(E);
TypeParam F;
E.reset(A);
testEmpty(E);
}
TYPED_TEST(BitVectorTest, Iterators) {
TypeParam Filled(10, true);
EXPECT_NE(Filled.set_bits_begin(), Filled.set_bits_end());
unsigned Counter = 0;
for (unsigned Bit : Filled.set_bits())
EXPECT_EQ(Bit, Counter++);
TypeParam Empty;
EXPECT_EQ(Empty.set_bits_begin(), Empty.set_bits_end());
for (unsigned Bit : Empty.set_bits()) {
(void)Bit;
EXPECT_TRUE(false);
}
TypeParam ToFill(100, false);
ToFill.set(0);
EXPECT_NE(ToFill.set_bits_begin(), ToFill.set_bits_end());
EXPECT_EQ(++ToFill.set_bits_begin(), ToFill.set_bits_end());
EXPECT_EQ(*ToFill.set_bits_begin(), 0U);
ToFill.reset(0);
EXPECT_EQ(ToFill.set_bits_begin(), ToFill.set_bits_end());
const unsigned List[] = {1, 10, 25, 99};
for (unsigned Num : List)
ToFill.set(Num);
unsigned i = 0;
for (unsigned Bit : ToFill.set_bits())
EXPECT_EQ(List[i++], Bit);
}
TYPED_TEST(BitVectorTest, PushBack) {
TypeParam Vec(10, false);
EXPECT_EQ(-1, Vec.find_first());
EXPECT_EQ(10U, Vec.size());
EXPECT_EQ(0U, Vec.count());
Vec.push_back(true);
EXPECT_EQ(10, Vec.find_first());
EXPECT_EQ(11U, Vec.size());
EXPECT_EQ(1U, Vec.count());
Vec.push_back(false);
EXPECT_EQ(10, Vec.find_first());
EXPECT_EQ(12U, Vec.size());
EXPECT_EQ(1U, Vec.count());
Vec.push_back(true);
EXPECT_EQ(10, Vec.find_first());
EXPECT_EQ(13U, Vec.size());
EXPECT_EQ(2U, Vec.count());
// Add a lot of values to cause reallocation.
for (int i = 0; i != 100; ++i) {
Vec.push_back(true);
Vec.push_back(false);
}
EXPECT_EQ(10, Vec.find_first());
EXPECT_EQ(213U, Vec.size());
EXPECT_EQ(102U, Vec.count());
}
}
#endif
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