class Constructable {
private:
static int numConstructorCalls;
+ static int numMoveConstructorCalls;
+ static int numCopyConstructorCalls;
static int numDestructorCalls;
static int numAssignmentCalls;
+ static int numMoveAssignmentCalls;
+ static int numCopyAssignmentCalls;
bool constructed;
int value;
}
Constructable(const Constructable & src) : constructed(true) {
- EXPECT_TRUE(src.constructed);
value = src.value;
++numConstructorCalls;
+ ++numCopyConstructorCalls;
}
Constructable(Constructable && src) : constructed(true) {
- EXPECT_TRUE(src.constructed);
value = src.value;
- src.value = -1;
++numConstructorCalls;
+ ++numMoveConstructorCalls;
}
~Constructable() {
Constructable & operator=(const Constructable & src) {
EXPECT_TRUE(constructed);
- EXPECT_TRUE(src.constructed);
value = src.value;
++numAssignmentCalls;
+ ++numCopyAssignmentCalls;
return *this;
}
Constructable & operator=(Constructable && src) {
EXPECT_TRUE(constructed);
- EXPECT_TRUE(src.constructed);
value = src.value;
- src.value = -1;
++numAssignmentCalls;
+ ++numMoveAssignmentCalls;
return *this;
}
static void reset() {
numConstructorCalls = 0;
+ numMoveConstructorCalls = 0;
+ numCopyConstructorCalls = 0;
numDestructorCalls = 0;
numAssignmentCalls = 0;
+ numMoveAssignmentCalls = 0;
+ numCopyAssignmentCalls = 0;
}
static int getNumConstructorCalls() {
return numConstructorCalls;
}
+ static int getNumMoveConstructorCalls() {
+ return numMoveConstructorCalls;
+ }
+
+ static int getNumCopyConstructorCalls() {
+ return numCopyConstructorCalls;
+ }
+
static int getNumDestructorCalls() {
return numDestructorCalls;
}
+ static int getNumAssignmentCalls() {
+ return numAssignmentCalls;
+ }
+
+ static int getNumMoveAssignmentCalls() {
+ return numMoveAssignmentCalls;
+ }
+
+ static int getNumCopyAssignmentCalls() {
+ return numCopyAssignmentCalls;
+ }
+
friend bool operator==(const Constructable & c0, const Constructable & c1) {
return c0.getValue() == c1.getValue();
}
};
int Constructable::numConstructorCalls;
+int Constructable::numCopyConstructorCalls;
+int Constructable::numMoveConstructorCalls;
int Constructable::numDestructorCalls;
int Constructable::numAssignmentCalls;
+int Constructable::numCopyAssignmentCalls;
+int Constructable::numMoveAssignmentCalls;
+
+struct NonCopyable {
+ NonCopyable() {}
+ NonCopyable(NonCopyable &&) {}
+ NonCopyable &operator=(NonCopyable &&) { return *this; }
+private:
+ NonCopyable(const NonCopyable &) LLVM_DELETED_FUNCTION;
+ NonCopyable &operator=(const NonCopyable &) LLVM_DELETED_FUNCTION;
+};
+
+LLVM_ATTRIBUTE_USED void CompileTest() {
+ SmallVector<NonCopyable, 0> V;
+ V.resize(42);
+}
// Test fixture class
template <typename VectorT>
typedef ::testing::Types<SmallVector<Constructable, 0>,
SmallVector<Constructable, 1>,
SmallVector<Constructable, 2>,
- SmallVector<Constructable, 4>
+ SmallVector<Constructable, 4>,
+ SmallVector<Constructable, 5>
> SmallVectorTestTypes;
TYPED_TEST_CASE(SmallVectorTest, SmallVectorTestTypes);
this->theVector.resize(2);
- // The extra constructor/destructor calls come from the temporary object used
- // to initialize the contents of the resized array (via copy construction).
- EXPECT_EQ(3, Constructable::getNumConstructorCalls());
- EXPECT_EQ(1, Constructable::getNumDestructorCalls());
+ EXPECT_EQ(2, Constructable::getNumConstructorCalls());
+ EXPECT_EQ(0, Constructable::getNumDestructorCalls());
EXPECT_EQ(2u, this->theVector.size());
}
+TYPED_TEST(SmallVectorTest, ResizeWithElementsTest) {
+ this->theVector.resize(2);
+
+ Constructable::reset();
+
+ this->theVector.resize(4);
+
+ size_t Ctors = Constructable::getNumConstructorCalls();
+ EXPECT_TRUE(Ctors == 2 || Ctors == 4);
+ size_t MoveCtors = Constructable::getNumMoveConstructorCalls();
+ EXPECT_TRUE(MoveCtors == 0 || MoveCtors == 2);
+ size_t Dtors = Constructable::getNumDestructorCalls();
+ EXPECT_TRUE(Dtors == 0 || Dtors == 2);
+}
+
// Resize with fill value.
TYPED_TEST(SmallVectorTest, ResizeFillTest) {
SCOPED_TRACE("ResizeFillTest");
TYPED_TEST(SmallVectorTest, InsertRepeatedTest) {
SCOPED_TRACE("InsertRepeatedTest");
- this->makeSequence(this->theVector, 10, 15);
- typename TypeParam::iterator I =
- this->theVector.insert(this->theVector.begin() + 1, 2, Constructable(16));
+ this->makeSequence(this->theVector, 1, 4);
+ Constructable::reset();
+ auto I =
+ this->theVector.insert(this->theVector.begin() + 1, 2, Constructable(16));
+ // Move construct the top element into newly allocated space, and optionally
+ // reallocate the whole buffer, move constructing into it.
+ // FIXME: This is inefficient, we shouldn't move things into newly allocated
+ // space, then move them up/around, there should only be 2 or 4 move
+ // constructions here.
+ EXPECT_TRUE(Constructable::getNumMoveConstructorCalls() == 2 ||
+ Constructable::getNumMoveConstructorCalls() == 6);
+ // Move assign the next two to shift them up and make a gap.
+ EXPECT_EQ(1, Constructable::getNumMoveAssignmentCalls());
+ // Copy construct the two new elements from the parameter.
+ EXPECT_EQ(2, Constructable::getNumCopyAssignmentCalls());
+ // All without any copy construction.
+ EXPECT_EQ(0, Constructable::getNumCopyConstructorCalls());
EXPECT_EQ(this->theVector.begin() + 1, I);
- this->assertValuesInOrder(this->theVector, 8u,
- 10, 16, 16, 11, 12, 13, 14, 15);
+ this->assertValuesInOrder(this->theVector, 6u, 1, 16, 16, 2, 3, 4);
+}
- // Insert at end.
- I = this->theVector.insert(this->theVector.end(), 2, Constructable(16));
- EXPECT_EQ(this->theVector.begin() + 8, I);
- this->assertValuesInOrder(this->theVector, 10u,
- 10, 16, 16, 11, 12, 13, 14, 15, 16, 16);
+
+TYPED_TEST(SmallVectorTest, InsertRepeatedAtEndTest) {
+ SCOPED_TRACE("InsertRepeatedTest");
+
+ this->makeSequence(this->theVector, 1, 4);
+ Constructable::reset();
+ auto I = this->theVector.insert(this->theVector.end(), 2, Constructable(16));
+ // Just copy construct them into newly allocated space
+ EXPECT_EQ(2, Constructable::getNumCopyConstructorCalls());
+ // Move everything across if reallocation is needed.
+ EXPECT_TRUE(Constructable::getNumMoveConstructorCalls() == 0 ||
+ Constructable::getNumMoveConstructorCalls() == 4);
+ // Without ever moving or copying anything else.
+ EXPECT_EQ(0, Constructable::getNumCopyAssignmentCalls());
+ EXPECT_EQ(0, Constructable::getNumMoveAssignmentCalls());
+
+ EXPECT_EQ(this->theVector.begin() + 4, I);
+ this->assertValuesInOrder(this->theVector, 6u, 1, 2, 3, 4, 16, 16);
+}
+
+TYPED_TEST(SmallVectorTest, InsertRepeatedEmptyTest) {
+ SCOPED_TRACE("InsertRepeatedTest");
+
+ this->makeSequence(this->theVector, 10, 15);
// Empty insert.
EXPECT_EQ(this->theVector.end(),
{ Constructable(77), Constructable(77), Constructable(77) };
this->makeSequence(this->theVector, 1, 3);
- typename TypeParam::iterator I =
- this->theVector.insert(this->theVector.begin() + 1, Arr, Arr+3);
+ Constructable::reset();
+ auto I = this->theVector.insert(this->theVector.begin() + 1, Arr, Arr + 3);
+ // Move construct the top 3 elements into newly allocated space.
+ // Possibly move the whole sequence into new space first.
+ // FIXME: This is inefficient, we shouldn't move things into newly allocated
+ // space, then move them up/around, there should only be 2 or 3 move
+ // constructions here.
+ EXPECT_TRUE(Constructable::getNumMoveConstructorCalls() == 2 ||
+ Constructable::getNumMoveConstructorCalls() == 5);
+ // Copy assign the lower 2 new elements into existing space.
+ EXPECT_EQ(2, Constructable::getNumCopyAssignmentCalls());
+ // Copy construct the third element into newly allocated space.
+ EXPECT_EQ(1, Constructable::getNumCopyConstructorCalls());
EXPECT_EQ(this->theVector.begin() + 1, I);
this->assertValuesInOrder(this->theVector, 6u, 1, 77, 77, 77, 2, 3);
+}
+
+
+TYPED_TEST(SmallVectorTest, InsertRangeAtEndTest) {
+ SCOPED_TRACE("InsertRangeTest");
+
+ Constructable Arr[3] =
+ { Constructable(77), Constructable(77), Constructable(77) };
+
+ this->makeSequence(this->theVector, 1, 3);
// Insert at end.
- I = this->theVector.insert(this->theVector.end(), Arr, Arr+3);
- EXPECT_EQ(this->theVector.begin() + 6, I);
- this->assertValuesInOrder(this->theVector, 9u,
- 1, 77, 77, 77, 2, 3, 77, 77, 77);
+ Constructable::reset();
+ auto I = this->theVector.insert(this->theVector.end(), Arr, Arr+3);
+ // Copy construct the 3 elements into new space at the top.
+ EXPECT_EQ(3, Constructable::getNumCopyConstructorCalls());
+ // Don't copy/move anything else.
+ EXPECT_EQ(0, Constructable::getNumCopyAssignmentCalls());
+ // Reallocation might occur, causing all elements to be moved into the new
+ // buffer.
+ EXPECT_TRUE(Constructable::getNumMoveConstructorCalls() == 0 ||
+ Constructable::getNumMoveConstructorCalls() == 3);
+ EXPECT_EQ(0, Constructable::getNumMoveAssignmentCalls());
+ EXPECT_EQ(this->theVector.begin() + 3, I);
+ this->assertValuesInOrder(this->theVector, 6u,
+ 1, 2, 3, 77, 77, 77);
+}
+
+TYPED_TEST(SmallVectorTest, InsertEmptyRangeTest) {
+ SCOPED_TRACE("InsertRangeTest");
+
+ this->makeSequence(this->theVector, 1, 3);
// Empty insert.
EXPECT_EQ(this->theVector.end(),
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