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19 #ifndef LLVM_SUPPORT_ALLOCATORBASE_H
20 #define LLVM_SUPPORT_ALLOCATORBASE_H
24 #include <type_traits>
38 void *
Allocate(
size_t Size,
size_t Alignment) {
40 static_assert(
static_cast<void *(
AllocatorBase::*)(
size_t,
size_t)
>(
42 static_cast<void *(DerivedT::*)(
size_t,
size_t)
>(
44 "Class derives from AllocatorBase without implementing the "
45 "core Allocate(size_t, size_t) overload!");
47 return static_cast<DerivedT *
>(
this)->
Allocate(Size, Alignment);
52 void Deallocate(
const void *Ptr,
size_t Size,
size_t Alignment) {
55 static_cast<void (
AllocatorBase::*)(
const void *,
size_t,
size_t)
>(
57 static_cast<void (DerivedT::*)(
const void *,
size_t,
size_t)
>(
58 &DerivedT::Deallocate),
59 "Class derives from AllocatorBase without implementing the "
60 "core Deallocate(void *) overload!");
62 return static_cast<DerivedT *
>(
this)->
Deallocate(Ptr, Size, Alignment);
70 return static_cast<T *
>(
Allocate(Num *
sizeof(
T),
alignof(
T)));
75 std::enable_if_t<!std::is_same<std::remove_cv_t<T>,
void>::value,
void>
77 Deallocate(
static_cast<const void *
>(Ptr), Num *
sizeof(
T),
alignof(
T));
92 void Deallocate(
const void *Ptr,
size_t Size,
size_t Alignment) {
104 #endif // LLVM_SUPPORT_ALLOCATORBASE_H
This is an optimization pass for GlobalISel generic memory operations.
void * Allocate(size_t Size, size_t Alignment)
Allocate Size bytes of Alignment aligned memory.
LLVM_ATTRIBUTE_RETURNS_NONNULL LLVM_ATTRIBUTE_RETURNS_NOALIAS void * allocate_buffer(size_t Size, size_t Alignment)
Allocate a buffer of memory with the given size and alignment.
std::enable_if_t<!std::is_same< std::remove_cv_t< T >, void >::value, void > Deallocate(T *Ptr, size_t Num=1)
Deallocate space for a sequence of objects without constructing them.
void deallocate_buffer(void *Ptr, size_t Size, size_t Alignment)
Deallocate a buffer of memory with the given size and alignment.
T * Allocate(size_t Num=1)
Allocate space for a sequence of objects without constructing them.
void Deallocate(const void *Ptr, size_t Size, size_t Alignment)
Deallocate Ptr to Size bytes of memory allocated by this allocator.
void Deallocate(const void *Ptr, size_t Size, size_t Alignment)
#define LLVM_ATTRIBUTE_RETURNS_NONNULL
CRTP base class providing obvious overloads for the core Allocate() methods of LLVM-style allocators.
LLVM_ATTRIBUTE_RETURNS_NONNULL void * Allocate(size_t Size, size_t Alignment)