19 #ifndef LLVM_CLANG_ANALYSIS_SUPPORT_BUMPVECTOR_H
20 #define LLVM_CLANG_ANALYSIS_SUPPORT_BUMPVECTOR_H
22 #include "llvm/ADT/PointerIntPair.h"
23 #include "llvm/Support/Allocator.h"
24 #include "llvm/Support/type_traits.h"
33 llvm::PointerIntPair<llvm::BumpPtrAllocator*, 1> Alloc;
46 delete Alloc.getPointer();
49 llvm::BumpPtrAllocator &
getAllocator() {
return *Alloc.getPointer(); }
54 T *Begin, *End, *Capacity;
58 : Begin(nullptr), End(nullptr), Capacity(nullptr) {
63 if (std::is_class<T>::value) {
65 destroy_range(Begin, End);
95 bool empty()
const {
return Begin == End; }
99 assert(Begin + idx < End);
103 assert(Begin + idx < End);
133 if (std::is_class<T>::value) {
134 destroy_range(Begin, End);
150 if (End < Capacity) {
164 assert (I >= Begin && I <= End &&
"Iterator out of bounds.");
165 if (End + Cnt <= Capacity) {
167 move_range_right(I, End, Cnt);
168 construct_range(I, I + Cnt, E);
173 grow(C,
size() + Cnt);
179 if (
unsigned(Capacity-Begin) < N)
185 size_t capacity()
const {
return Capacity - Begin; }
192 void construct_range(T *
S, T *E,
const T &Elt) {
197 void destroy_range(T *S, T *E) {
204 void move_range_right(T *S, T *E,
size_t D) {
205 for (T *I = E + D - 1, *IL = S + D - 1; I != IL; --I) {
214 template <
typename T>
215 void BumpVector<T>::grow(BumpVectorContext &
C,
size_t MinSize) {
216 size_t CurCapacity = Capacity-Begin;
217 size_t CurSize = size();
218 size_t NewCapacity = 2*CurCapacity;
219 if (NewCapacity < MinSize)
220 NewCapacity = MinSize;
223 T *NewElts = C.getAllocator().template Allocate<T>(NewCapacity);
227 if (std::is_class<T>::value) {
228 std::uninitialized_copy(Begin,
End, NewElts);
230 destroy_range(Begin,
End);
233 memcpy(NewElts, Begin, CurSize *
sizeof(T));
240 End = NewElts+CurSize;
241 Capacity = Begin+NewCapacity;
const_reference operator[](unsigned idx) const
reference operator[](unsigned idx)
const_iterator begin() const
const_reference back() const
const_reverse_iterator rend() const
const_iterator end() const
std::reverse_iterator< iterator > reverse_iterator
llvm::BumpPtrAllocator & getAllocator()
reverse_iterator rbegin()
BumpVector(BumpVectorContext &C, unsigned N)
pointer data()
data - Return a pointer to the vector's buffer, even if empty().
void reserve(BumpVectorContext &C, unsigned N)
const_reference front() const
ptrdiff_t difference_type
The result type of a method or function.
std::reverse_iterator< const_iterator > const_reverse_iterator
void push_back(const_reference Elt, BumpVectorContext &C)
BumpVectorContext(llvm::BumpPtrAllocator &A)
const_pointer data() const
data - Return a pointer to the vector's buffer, even if empty().
__PTRDIFF_TYPE__ ptrdiff_t
iterator insert(iterator I, size_t Cnt, const_reference E, BumpVectorContext &C)
CFGElement - Represents a top-level expression in a basic block.
const_reverse_iterator rbegin() const
const T & const_reference