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329 lines
9.8 KiB
C++
329 lines
9.8 KiB
C++
//===- llvm/unittest/Support/IntegersSubsetTest.cpp - IntegersSubset 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/APInt.h"
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#include "llvm/Support/IntegersSubset.h"
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#include "llvm/Support/IntegersSubsetMapping.h"
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#include "gtest/gtest.h"
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#include <vector>
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using namespace llvm;
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namespace {
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class Int : public APInt {
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public:
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Int() {}
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Int(uint64_t V) : APInt(64, V) {}
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Int(const APInt& Src) : APInt(Src) {}
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bool operator < (const APInt& RHS) const { return ult(RHS); }
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bool operator > (const APInt& RHS) const { return ugt(RHS); }
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bool operator <= (const APInt& RHS) const { return ule(RHS); }
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bool operator >= (const APInt& RHS) const { return uge(RHS); }
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};
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typedef IntRange<Int> Range;
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typedef IntegersSubsetGeneric<Int> Subset;
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typedef IntegersSubsetMapping<unsigned,Subset,Int> Mapping;
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TEST(IntegersSubsetTest, GeneralTest) {
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// Test construction.
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std::vector<Range> Ranges;
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Ranges.reserve(3);
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// Initialize Subset as union of three pairs:
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// { {0, 8}, {10, 18}, {20, 28} }
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for (unsigned i = 0; i < 3; ++i)
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Ranges.push_back(Range(Int(i*10), Int(i*10 + 8)));
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Subset TheSubset(Ranges);
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for (unsigned i = 0; i < 3; ++i) {
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EXPECT_EQ(TheSubset.getItem(i).getLow(), Int(i*10));
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EXPECT_EQ(TheSubset.getItem(i).getHigh(), Int(i*10 + 8));
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}
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EXPECT_EQ(TheSubset.getNumItems(), 3ULL);
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// Test belonging to range.
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EXPECT_TRUE(TheSubset.isSatisfies(Int(5)));
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EXPECT_FALSE(TheSubset.isSatisfies(Int(9)));
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// Test when subset contains the only item.
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Ranges.clear();
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Ranges.push_back(Range(Int(10), Int(10)));
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Subset TheSingleNumber(Ranges);
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EXPECT_TRUE(TheSingleNumber.isSingleNumber());
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Ranges.push_back(Range(Int(12), Int(15)));
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Subset NotASingleNumber(Ranges);
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EXPECT_FALSE(NotASingleNumber.isSingleNumber());
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// Test when subset contains items that are not a ranges but
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// the single numbers.
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Ranges.clear();
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Ranges.push_back(Range(Int(10), Int(10)));
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Ranges.push_back(Range(Int(15), Int(19)));
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Subset WithSingleNumberItems(Ranges);
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EXPECT_TRUE(WithSingleNumberItems.isSingleNumber(0));
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EXPECT_FALSE(WithSingleNumberItems.isSingleNumber(1));
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// Test size of subset. Note subset itself may be not optimized (improper),
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// so it may contain duplicates, and the size of subset { {0, 9} {5, 9} }
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// will 15 instead of 10.
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Ranges.clear();
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Ranges.push_back(Range(Int(0), Int(9)));
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Ranges.push_back(Range(Int(5), Int(9)));
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Subset NotOptimizedSubset(Ranges);
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EXPECT_EQ(NotOptimizedSubset.getSize(), 15ULL);
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// Test access to a single value.
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// getSingleValue(idx) method represents subset as flat numbers collection,
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// so subset { {0, 3}, {8, 10} } will represented as array
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// { 0, 1, 2, 3, 8, 9, 10 }.
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Ranges.clear();
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Ranges.push_back(Range(Int(0), Int(3)));
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Ranges.push_back(Range(Int(8), Int(10)));
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Subset OneMoreSubset(Ranges);
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EXPECT_EQ(OneMoreSubset.getSingleValue(5), Int(9));
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}
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TEST(IntegersSubsetTest, MappingTest) {
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Mapping::Cases TheCases;
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unsigned Successors[3] = {0, 1, 2};
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// Test construction.
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Mapping TheMapping;
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for (unsigned i = 0; i < 3; ++i)
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TheMapping.add(Int(10*i), Int(10*i + 9), Successors + i);
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TheMapping.add(Int(111), Int(222), Successors);
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TheMapping.removeItem(--TheMapping.end());
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TheMapping.getCases(TheCases);
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EXPECT_EQ(TheCases.size(), 3ULL);
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for (unsigned i = 0; i < 3; ++i) {
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Mapping::Cases::iterator CaseIt = TheCases.begin();
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std::advance(CaseIt, i);
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EXPECT_EQ(CaseIt->first, Successors + i);
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EXPECT_EQ(CaseIt->second.getNumItems(), 1ULL);
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EXPECT_EQ(CaseIt->second.getItem(0), Range(Int(10*i), Int(10*i + 9)));
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}
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// Test verification.
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Mapping ImproperMapping;
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ImproperMapping.add(Int(10), Int(11), Successors + 0);
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ImproperMapping.add(Int(11), Int(12), Successors + 1);
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Mapping::RangeIterator ErrItem;
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EXPECT_FALSE(ImproperMapping.verify(ErrItem));
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EXPECT_EQ(ErrItem, --ImproperMapping.end());
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Mapping ProperMapping;
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ProperMapping.add(Int(10), Int(11), Successors + 0);
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ProperMapping.add(Int(12), Int(13), Successors + 1);
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EXPECT_TRUE(ProperMapping.verify(ErrItem));
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// Test optimization.
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Mapping ToBeOptimized;
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for (unsigned i = 0; i < 3; ++i) {
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ToBeOptimized.add(Int(i * 10), Int(i * 10 + 1), Successors + i);
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ToBeOptimized.add(Int(i * 10 + 2), Int(i * 10 + 9), Successors + i);
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}
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ToBeOptimized.optimize();
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TheCases.clear();
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ToBeOptimized.getCases(TheCases);
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EXPECT_EQ(TheCases.size(), 3ULL);
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for (unsigned i = 0; i < 3; ++i) {
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Mapping::Cases::iterator CaseIt = TheCases.begin();
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std::advance(CaseIt, i);
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EXPECT_EQ(CaseIt->first, Successors + i);
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EXPECT_EQ(CaseIt->second.getNumItems(), 1ULL);
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EXPECT_EQ(CaseIt->second.getItem(0), Range(Int(i * 10), Int(i * 10 + 9)));
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}
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}
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typedef unsigned unsigned_pair[2];
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typedef unsigned_pair unsigned_ranges[];
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void TestDiff(
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const unsigned_ranges LHS,
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unsigned LSize,
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const unsigned_ranges RHS,
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unsigned RSize,
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const unsigned_ranges ExcludeRes,
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unsigned ExcludeResSize,
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const unsigned_ranges IntersectRes,
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unsigned IntersectResSize
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) {
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Mapping::RangesCollection Ranges;
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Mapping LHSMapping;
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for (unsigned i = 0; i < LSize; ++i)
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Ranges.push_back(Range(Int(LHS[i][0]), Int(LHS[i][1])));
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LHSMapping.add(Ranges);
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Ranges.clear();
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Mapping RHSMapping;
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for (unsigned i = 0; i < RSize; ++i)
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Ranges.push_back(Range(Int(RHS[i][0]), Int(RHS[i][1])));
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RHSMapping.add(Ranges);
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Mapping LExclude, Intersection;
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LHSMapping.diff(&LExclude, &Intersection, 0, RHSMapping);
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if (ExcludeResSize) {
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EXPECT_EQ(LExclude.size(), ExcludeResSize);
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unsigned i = 0;
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for (Mapping::RangeIterator rei = LExclude.begin(),
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e = LExclude.end(); rei != e; ++rei, ++i)
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EXPECT_EQ(rei->first, Range(ExcludeRes[i][0], ExcludeRes[i][1]));
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} else
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EXPECT_TRUE(LExclude.empty());
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if (IntersectResSize) {
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EXPECT_EQ(Intersection.size(), IntersectResSize);
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unsigned i = 0;
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for (Mapping::RangeIterator ii = Intersection.begin(),
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e = Intersection.end(); ii != e; ++ii, ++i)
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EXPECT_EQ(ii->first, Range(IntersectRes[i][0], IntersectRes[i][1]));
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} else
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EXPECT_TRUE(Intersection.empty());
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LExclude.clear();
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Intersection.clear();
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RHSMapping.diff(0, &Intersection, &LExclude, LHSMapping);
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// Check LExclude again.
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if (ExcludeResSize) {
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EXPECT_EQ(LExclude.size(), ExcludeResSize);
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unsigned i = 0;
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for (Mapping::RangeIterator rei = LExclude.begin(),
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e = LExclude.end(); rei != e; ++rei, ++i)
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EXPECT_EQ(rei->first, Range(ExcludeRes[i][0], ExcludeRes[i][1]));
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} else
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EXPECT_TRUE(LExclude.empty());
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}
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TEST(IntegersSubsetTest, DiffTest) {
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static const unsigned NOT_A_NUMBER = 0xffff;
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{
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unsigned_ranges LHS = { { 0, 4 }, { 7, 10 }, { 13, 17 } };
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unsigned_ranges RHS = { { 3, 14 } };
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unsigned_ranges ExcludeRes = { { 0, 2 }, { 15, 17 } };
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unsigned_ranges IntersectRes = { { 3, 4 }, { 7, 10 }, { 13, 14 } };
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TestDiff(LHS, 3, RHS, 1, ExcludeRes, 2, IntersectRes, 3);
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}
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{
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unsigned_ranges LHS = { { 0, 4 }, { 7, 10 }, { 13, 17 } };
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unsigned_ranges RHS = { { 0, 4 }, { 13, 17 } };
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unsigned_ranges ExcludeRes = { { 7, 10 } };
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unsigned_ranges IntersectRes = { { 0, 4 }, { 13, 17 } };
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TestDiff(LHS, 3, RHS, 2, ExcludeRes, 1, IntersectRes, 2);
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}
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{
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unsigned_ranges LHS = { { 0, 17 } };
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unsigned_ranges RHS = { { 1, 5 }, { 10, 12 }, { 15, 16 } };
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unsigned_ranges ExcludeRes =
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{ { 0, 0 }, { 6, 9 }, { 13, 14 }, { 17, 17 } };
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unsigned_ranges IntersectRes = { { 1, 5 }, { 10, 12 }, { 15, 16 } };
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TestDiff(LHS, 1, RHS, 3, ExcludeRes, 4, IntersectRes, 3);
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}
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{
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unsigned_ranges LHS = { { 2, 4 } };
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unsigned_ranges RHS = { { 0, 5 } };
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unsigned_ranges ExcludeRes = { {NOT_A_NUMBER, NOT_A_NUMBER} };
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unsigned_ranges IntersectRes = { { 2, 4 } };
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TestDiff(LHS, 1, RHS, 1, ExcludeRes, 0, IntersectRes, 1);
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}
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{
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unsigned_ranges LHS = { { 2, 4 } };
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unsigned_ranges RHS = { { 7, 8 } };
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unsigned_ranges ExcludeRes = { { 2, 4 } };
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unsigned_ranges IntersectRes = { {NOT_A_NUMBER, NOT_A_NUMBER} };
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TestDiff(LHS, 1, RHS, 1, ExcludeRes, 1, IntersectRes, 0);
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}
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{
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unsigned_ranges LHS = { { 3, 7 } };
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unsigned_ranges RHS = { { 1, 4 } };
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unsigned_ranges ExcludeRes = { { 5, 7 } };
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unsigned_ranges IntersectRes = { { 3, 4 } };
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TestDiff(LHS, 1, RHS, 1, ExcludeRes, 1, IntersectRes, 1);
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}
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{
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unsigned_ranges LHS = { { 0, 7 } };
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unsigned_ranges RHS = { { 0, 5 }, { 6, 9 } };
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unsigned_ranges ExcludeRes = { {NOT_A_NUMBER, NOT_A_NUMBER} };
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unsigned_ranges IntersectRes = { { 0, 5 }, {6, 7} };
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TestDiff(LHS, 1, RHS, 2, ExcludeRes, 0, IntersectRes, 2);
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}
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{
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unsigned_ranges LHS = { { 17, 17 } };
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unsigned_ranges RHS = { { 4, 4 } };
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unsigned_ranges ExcludeRes = { {17, 17} };
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unsigned_ranges IntersectRes = { { NOT_A_NUMBER, NOT_A_NUMBER } };
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TestDiff(LHS, 1, RHS, 1, ExcludeRes, 1, IntersectRes, 0);
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}
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}
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}
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