107 lines
2.8 KiB
C++
107 lines
2.8 KiB
C++
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//===---- ADT/IntEqClassesTest.cpp - IntEqClasses unit tests ----*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/IntEqClasses.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(IntEqClasses, Simple) {
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IntEqClasses ec(10);
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ec.join(0, 1);
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ec.join(3, 2);
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ec.join(4, 5);
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ec.join(7, 6);
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EXPECT_EQ(0u, ec.findLeader(0));
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EXPECT_EQ(0u, ec.findLeader(1));
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EXPECT_EQ(2u, ec.findLeader(2));
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EXPECT_EQ(2u, ec.findLeader(3));
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EXPECT_EQ(4u, ec.findLeader(4));
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EXPECT_EQ(4u, ec.findLeader(5));
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EXPECT_EQ(6u, ec.findLeader(6));
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EXPECT_EQ(6u, ec.findLeader(7));
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EXPECT_EQ(8u, ec.findLeader(8));
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EXPECT_EQ(9u, ec.findLeader(9));
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// join two non-leaders.
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ec.join(1, 3);
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EXPECT_EQ(0u, ec.findLeader(0));
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EXPECT_EQ(0u, ec.findLeader(1));
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EXPECT_EQ(0u, ec.findLeader(2));
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EXPECT_EQ(0u, ec.findLeader(3));
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EXPECT_EQ(4u, ec.findLeader(4));
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EXPECT_EQ(4u, ec.findLeader(5));
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EXPECT_EQ(6u, ec.findLeader(6));
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EXPECT_EQ(6u, ec.findLeader(7));
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EXPECT_EQ(8u, ec.findLeader(8));
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EXPECT_EQ(9u, ec.findLeader(9));
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// join two leaders.
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ec.join(4, 8);
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EXPECT_EQ(0u, ec.findLeader(0));
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EXPECT_EQ(0u, ec.findLeader(1));
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EXPECT_EQ(0u, ec.findLeader(2));
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EXPECT_EQ(0u, ec.findLeader(3));
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EXPECT_EQ(4u, ec.findLeader(4));
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EXPECT_EQ(4u, ec.findLeader(5));
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EXPECT_EQ(6u, ec.findLeader(6));
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EXPECT_EQ(6u, ec.findLeader(7));
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EXPECT_EQ(4u, ec.findLeader(8));
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EXPECT_EQ(9u, ec.findLeader(9));
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// join mixed.
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ec.join(9, 1);
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EXPECT_EQ(0u, ec.findLeader(0));
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EXPECT_EQ(0u, ec.findLeader(1));
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EXPECT_EQ(0u, ec.findLeader(2));
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EXPECT_EQ(0u, ec.findLeader(3));
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EXPECT_EQ(4u, ec.findLeader(4));
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EXPECT_EQ(4u, ec.findLeader(5));
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EXPECT_EQ(6u, ec.findLeader(6));
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EXPECT_EQ(6u, ec.findLeader(7));
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EXPECT_EQ(4u, ec.findLeader(8));
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EXPECT_EQ(0u, ec.findLeader(9));
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// compressed map.
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ec.compress();
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EXPECT_EQ(3u, ec.getNumClasses());
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EXPECT_EQ(0u, ec[0]);
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EXPECT_EQ(0u, ec[1]);
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EXPECT_EQ(0u, ec[2]);
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EXPECT_EQ(0u, ec[3]);
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EXPECT_EQ(1u, ec[4]);
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EXPECT_EQ(1u, ec[5]);
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EXPECT_EQ(2u, ec[6]);
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EXPECT_EQ(2u, ec[7]);
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EXPECT_EQ(1u, ec[8]);
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EXPECT_EQ(0u, ec[9]);
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// uncompressed map.
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ec.uncompress();
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EXPECT_EQ(0u, ec.findLeader(0));
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EXPECT_EQ(0u, ec.findLeader(1));
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EXPECT_EQ(0u, ec.findLeader(2));
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EXPECT_EQ(0u, ec.findLeader(3));
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EXPECT_EQ(4u, ec.findLeader(4));
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EXPECT_EQ(4u, ec.findLeader(5));
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EXPECT_EQ(6u, ec.findLeader(6));
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EXPECT_EQ(6u, ec.findLeader(7));
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EXPECT_EQ(4u, ec.findLeader(8));
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EXPECT_EQ(0u, ec.findLeader(9));
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}
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} // end anonymous namespace
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