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69a27222d9
re-insertion of entries into the worklist moves them to the end. This is fairly similar to a SetVector, but helps in the case where in addition to not inserting duplicates you want to adjust the sequence of a pop-off-the-back worklist. I'm not at all attached to the name of this data structure if others have better suggestions, but this is one that David Majnemer brought up in IRC discussions that seems plausible. I've trimmed the interface down somewhat from SetVector's interface because several things make less sense here IMO: iteration primarily. I'd prefer to add these back as we have users that need them. My use case doesn't even need all of what is provided here. =] I've also included a basic unittest to make sure this functions reasonably. Differential Revision: http://reviews.llvm.org/D21866 llvm-svn: 274198
107 lines
2.6 KiB
C++
107 lines
2.6 KiB
C++
//===- llvm/unittest/ADT/PriorityWorklist.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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//
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// PriorityWorklist unit tests.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/PriorityWorklist.h"
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#include "gtest/gtest.h"
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namespace {
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using namespace llvm;
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template <typename T> class PriorityWorklistTest : public ::testing::Test {};
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typedef ::testing::Types<PriorityWorklist<int>, SmallPriorityWorklist<int, 2>>
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TestTypes;
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TYPED_TEST_CASE(PriorityWorklistTest, TestTypes);
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TYPED_TEST(PriorityWorklistTest, Basic) {
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TypeParam W;
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EXPECT_TRUE(W.empty());
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EXPECT_EQ(0u, W.size());
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EXPECT_FALSE(W.count(42));
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EXPECT_TRUE(W.insert(21));
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EXPECT_TRUE(W.insert(42));
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EXPECT_TRUE(W.insert(17));
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EXPECT_FALSE(W.empty());
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EXPECT_EQ(3u, W.size());
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EXPECT_TRUE(W.count(42));
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EXPECT_FALSE(W.erase(75));
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EXPECT_EQ(3u, W.size());
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EXPECT_EQ(17, W.back());
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EXPECT_TRUE(W.erase(17));
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EXPECT_FALSE(W.count(17));
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EXPECT_EQ(2u, W.size());
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EXPECT_EQ(42, W.back());
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W.clear();
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EXPECT_TRUE(W.empty());
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EXPECT_EQ(0u, W.size());
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EXPECT_TRUE(W.insert(21));
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EXPECT_TRUE(W.insert(42));
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EXPECT_TRUE(W.insert(12));
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EXPECT_TRUE(W.insert(17));
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EXPECT_TRUE(W.count(12));
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EXPECT_TRUE(W.count(17));
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EXPECT_EQ(4u, W.size());
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EXPECT_EQ(17, W.back());
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EXPECT_TRUE(W.erase(12));
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EXPECT_FALSE(W.count(12));
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EXPECT_TRUE(W.count(17));
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EXPECT_EQ(3u, W.size());
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EXPECT_EQ(17, W.back());
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EXPECT_FALSE(W.insert(42));
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EXPECT_EQ(3u, W.size());
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EXPECT_EQ(42, W.pop_back_val());
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EXPECT_EQ(17, W.pop_back_val());
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EXPECT_EQ(21, W.pop_back_val());
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EXPECT_TRUE(W.empty());
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}
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TYPED_TEST(PriorityWorklistTest, EraseIf) {
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TypeParam W;
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W.insert(23);
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W.insert(10);
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W.insert(47);
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W.insert(42);
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W.insert(23);
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W.insert(13);
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W.insert(26);
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W.insert(42);
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EXPECT_EQ(6u, W.size());
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EXPECT_FALSE(W.erase_if([](int i) { return i > 100; }));
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EXPECT_EQ(6u, W.size());
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EXPECT_EQ(42, W.back());
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EXPECT_TRUE(W.erase_if([](int i) {
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assert(i != 0 && "Saw a null value!");
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return (i & 1) == 0;
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}));
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EXPECT_EQ(3u, W.size());
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EXPECT_FALSE(W.count(42));
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EXPECT_FALSE(W.count(26));
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EXPECT_FALSE(W.count(10));
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EXPECT_FALSE(W.insert(47));
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EXPECT_FALSE(W.insert(23));
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EXPECT_EQ(23, W.pop_back_val());
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EXPECT_EQ(47, W.pop_back_val());
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EXPECT_EQ(13, W.pop_back_val());
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}
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}
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