mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-19 11:02:59 +02:00
ae65e281f3
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
85 lines
2.5 KiB
C++
85 lines
2.5 KiB
C++
//=== llvm/unittest/ADT/EquivalenceClassesTest.cpp - the structure 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/ADT/EquivalenceClasses.h"
|
|
#include "gtest/gtest.h"
|
|
|
|
using namespace llvm;
|
|
|
|
namespace llvm {
|
|
|
|
TEST(EquivalenceClassesTest, NoMerges) {
|
|
EquivalenceClasses<int> EqClasses;
|
|
// Until we merged any sets, check that every element is only equivalent to
|
|
// itself.
|
|
for (int i = 0; i < 3; i++)
|
|
for (int j = 0; j < 3; j++)
|
|
if (i == j)
|
|
EXPECT_TRUE(EqClasses.isEquivalent(i, j));
|
|
else
|
|
EXPECT_FALSE(EqClasses.isEquivalent(i, j));
|
|
}
|
|
|
|
TEST(EquivalenceClassesTest, SimpleMerge1) {
|
|
EquivalenceClasses<int> EqClasses;
|
|
// Check that once we merge (A, B), (B, C), (C, D), then all elements belong
|
|
// to one set.
|
|
EqClasses.unionSets(0, 1);
|
|
EqClasses.unionSets(1, 2);
|
|
EqClasses.unionSets(2, 3);
|
|
for (int i = 0; i < 4; ++i)
|
|
for (int j = 0; j < 4; ++j)
|
|
EXPECT_TRUE(EqClasses.isEquivalent(i, j));
|
|
}
|
|
|
|
TEST(EquivalenceClassesTest, SimpleMerge2) {
|
|
EquivalenceClasses<int> EqClasses;
|
|
// Check that once we merge (A, B), (C, D), (A, C), then all elements belong
|
|
// to one set.
|
|
EqClasses.unionSets(0, 1);
|
|
EqClasses.unionSets(2, 3);
|
|
EqClasses.unionSets(0, 2);
|
|
for (int i = 0; i < 4; ++i)
|
|
for (int j = 0; j < 4; ++j)
|
|
EXPECT_TRUE(EqClasses.isEquivalent(i, j));
|
|
}
|
|
|
|
TEST(EquivalenceClassesTest, TwoSets) {
|
|
EquivalenceClasses<int> EqClasses;
|
|
// Form sets of odd and even numbers, check that we split them into these
|
|
// two sets correcrly.
|
|
for (int i = 0; i < 30; i += 2)
|
|
EqClasses.unionSets(0, i);
|
|
for (int i = 1; i < 30; i += 2)
|
|
EqClasses.unionSets(1, i);
|
|
|
|
for (int i = 0; i < 30; i++)
|
|
for (int j = 0; j < 30; j++)
|
|
if (i % 2 == j % 2)
|
|
EXPECT_TRUE(EqClasses.isEquivalent(i, j));
|
|
else
|
|
EXPECT_FALSE(EqClasses.isEquivalent(i, j));
|
|
}
|
|
|
|
TEST(EquivalenceClassesTest, MultipleSets) {
|
|
EquivalenceClasses<int> EqClasses;
|
|
// Split numbers from [0, 100) into sets so that values in the same set have
|
|
// equal remainders (mod 17).
|
|
for (int i = 0; i < 100; i++)
|
|
EqClasses.unionSets(i % 17, i);
|
|
|
|
for (int i = 0; i < 100; i++)
|
|
for (int j = 0; j < 100; j++)
|
|
if (i % 17 == j % 17)
|
|
EXPECT_TRUE(EqClasses.isEquivalent(i, j));
|
|
else
|
|
EXPECT_FALSE(EqClasses.isEquivalent(i, j));
|
|
}
|
|
|
|
} // llvm
|