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Upgrade to 2022-era LLVM LIBCXX

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Justine Tunney 2024-05-27 02:12:27 -07:00
parent 2f4ca71f26
commit 8e68384e15
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2078 changed files with 165657 additions and 65010 deletions
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287
third_party/libcxx/new vendored
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@ -1,5 +1,5 @@
// -*- C++ -*-
//===----------------------------- new ------------------------------------===//
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
@ -10,15 +10,6 @@
#ifndef _LIBCPP_NEW
#define _LIBCPP_NEW
#include "third_party/libcxx/__config"
#include "third_party/libcxx/exception"
#include "third_party/libcxx/type_traits"
#include "third_party/libcxx/cstddef"
#include "third_party/libcxx/version"
#ifdef _LIBCPP_NO_EXCEPTIONS
#include "third_party/libcxx/cstdlib"
#endif
/*
new synopsis
@ -58,11 +49,11 @@ new_handler get_new_handler() noexcept;
template <class T> constexpr T* launder(T* p) noexcept; // C++17
} // std
void* operator new(std::size_t size); // replaceable, nodiscard in C++2a
void* operator new(std::size_t size, std::align_val_t alignment); // replaceable, C++17, nodiscard in C++2a
void* operator new(std::size_t size, const std::nothrow_t&) noexcept; // replaceable, nodiscard in C++2a
void* operator new(std::size_t size); // replaceable, nodiscard in C++20
void* operator new(std::size_t size, std::align_val_t alignment); // replaceable, C++17, nodiscard in C++20
void* operator new(std::size_t size, const std::nothrow_t&) noexcept; // replaceable, nodiscard in C++20
void* operator new(std::size_t size, std::align_val_t alignment,
const std::nothrow_t&) noexcept; // replaceable, C++17, nodiscard in C++2a
const std::nothrow_t&) noexcept; // replaceable, C++17, nodiscard in C++20
void operator delete(void* ptr) noexcept; // replaceable
void operator delete(void* ptr, std::size_t size) noexcept; // replaceable, C++14
void operator delete(void* ptr, std::align_val_t alignment) noexcept; // replaceable, C++17
@ -72,12 +63,12 @@ void operator delete(void* ptr, const std::nothrow_t&) noexcept; // repla
void operator delete(void* ptr, std:align_val_t alignment,
const std::nothrow_t&) noexcept; // replaceable, C++17
void* operator new[](std::size_t size); // replaceable, nodiscard in C++2a
void* operator new[](std::size_t size); // replaceable, nodiscard in C++20
void* operator new[](std::size_t size,
std::align_val_t alignment) noexcept; // replaceable, C++17, nodiscard in C++2a
void* operator new[](std::size_t size, const std::nothrow_t&) noexcept; // replaceable, nodiscard in C++2a
std::align_val_t alignment) noexcept; // replaceable, C++17, nodiscard in C++20
void* operator new[](std::size_t size, const std::nothrow_t&) noexcept; // replaceable, nodiscard in C++20
void* operator new[](std::size_t size, std::align_val_t alignment,
const std::nothrow_t&) noexcept; // replaceable, C++17, nodiscard in C++2a
const std::nothrow_t&) noexcept; // replaceable, C++17, nodiscard in C++20
void operator delete[](void* ptr) noexcept; // replaceable
void operator delete[](void* ptr, std::size_t size) noexcept; // replaceable, C++14
void operator delete[](void* ptr,
@ -88,15 +79,32 @@ void operator delete[](void* ptr, const std::nothrow_t&) noexcept; // repla
void operator delete[](void* ptr, std::align_val_t alignment,
const std::nothrow_t&) noexcept; // replaceable, C++17
void* operator new (std::size_t size, void* ptr) noexcept; // nodiscard in C++2a
void* operator new[](std::size_t size, void* ptr) noexcept; // nodiscard in C++2a
void* operator new (std::size_t size, void* ptr) noexcept; // nodiscard in C++20
void* operator new[](std::size_t size, void* ptr) noexcept; // nodiscard in C++20
void operator delete (void* ptr, void*) noexcept;
void operator delete[](void* ptr, void*) noexcept;
*/
#include <__assert> // all public C++ headers provide the assertion handler
#include <__availability>
#include <__config>
#include <__exception/exception.h>
#include <__type_traits/alignment_of.h>
#include <__type_traits/is_function.h>
#include <__type_traits/is_same.h>
#include <__type_traits/remove_cv.h>
#include <__verbose_abort>
#include <cstddef>
#include <cstdlib>
#include <version>
#if defined(_LIBCPP_ABI_VCRUNTIME)
#include <new.h>
#endif
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
# pragma GCC system_header
#endif
#if !defined(__cpp_sized_deallocation) || __cpp_sized_deallocation < 201309L
@ -113,11 +121,6 @@ void operator delete[](void* ptr, void*) noexcept;
# define _LIBCPP_HAS_NO_SIZED_DEALLOCATION
#endif
#if !__has_builtin(__builtin_operator_new) || \
__has_builtin(__builtin_operator_new) < 201802L
#define _LIBCPP_HAS_NO_BUILTIN_OVERLOADED_OPERATOR_NEW_DELETE
#endif
namespace std // purposefully not using versioning namespace
{
@ -130,8 +133,8 @@ class _LIBCPP_EXCEPTION_ABI bad_alloc
{
public:
bad_alloc() _NOEXCEPT;
virtual ~bad_alloc() _NOEXCEPT;
virtual const char* what() const _NOEXCEPT;
~bad_alloc() _NOEXCEPT override;
const char* what() const _NOEXCEPT override;
};
class _LIBCPP_EXCEPTION_ABI bad_array_new_length
@ -139,18 +142,46 @@ class _LIBCPP_EXCEPTION_ABI bad_array_new_length
{
public:
bad_array_new_length() _NOEXCEPT;
virtual ~bad_array_new_length() _NOEXCEPT;
virtual const char* what() const _NOEXCEPT;
~bad_array_new_length() _NOEXCEPT override;
const char* what() const _NOEXCEPT override;
};
typedef void (*new_handler)();
_LIBCPP_FUNC_VIS new_handler set_new_handler(new_handler) _NOEXCEPT;
_LIBCPP_FUNC_VIS new_handler get_new_handler() _NOEXCEPT;
#endif // !_LIBCPP_ABI_VCRUNTIME
#elif defined(_HAS_EXCEPTIONS) && _HAS_EXCEPTIONS == 0 // !_LIBCPP_ABI_VCRUNTIME
// When _HAS_EXCEPTIONS == 0, these complete definitions are needed,
// since they would normally be provided in vcruntime_exception.h
class bad_alloc : public exception {
public:
bad_alloc() noexcept : exception("bad allocation") {}
private:
friend class bad_array_new_length;
bad_alloc(char const* const __message) noexcept : exception(__message) {}
};
class bad_array_new_length : public bad_alloc {
public:
bad_array_new_length() noexcept : bad_alloc("bad array new length") {}
};
#endif // defined(_LIBCPP_ABI_VCRUNTIME) && defined(_HAS_EXCEPTIONS) && _HAS_EXCEPTIONS == 0
_LIBCPP_NORETURN _LIBCPP_FUNC_VIS void __throw_bad_alloc(); // not in C++ spec
_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
void __throw_bad_array_new_length()
{
#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
throw bad_array_new_length();
#else
_LIBCPP_VERBOSE_ABORT("bad_array_new_length was thrown in -fno-exceptions mode");
#endif
}
#if !defined(_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION) && \
!defined(_LIBCPP_ABI_VCRUNTIME)
#ifndef _LIBCPP_CXX03_LANG
@ -160,16 +191,16 @@ enum align_val_t { __zero = 0, __max = (size_t)-1 };
#endif
#endif
#if _LIBCPP_STD_VER > 17
#if _LIBCPP_STD_VER >= 20
// Enable the declaration even if the compiler doesn't support the language
// feature.
struct destroying_delete_t {
explicit destroying_delete_t() = default;
};
_LIBCPP_INLINE_VAR constexpr destroying_delete_t destroying_delete{};
#endif // _LIBCPP_STD_VER > 17
inline constexpr destroying_delete_t destroying_delete{};
#endif // _LIBCPP_STD_VER >= 20
} // std
} // namespace std
#if defined(_LIBCPP_CXX03_LANG)
#define _THROW_BAD_ALLOC throw(std::bad_alloc)
@ -230,31 +261,54 @@ _LIBCPP_CONSTEXPR inline _LIBCPP_INLINE_VISIBILITY bool __is_overaligned_for_new
#endif
}
inline _LIBCPP_INLINE_VISIBILITY void *__libcpp_allocate(size_t __size, size_t __align) {
#ifndef _LIBCPP_HAS_NO_ALIGNED_ALLOCATION
if (__is_overaligned_for_new(__align)) {
const align_val_t __align_val = static_cast<align_val_t>(__align);
# ifdef _LIBCPP_HAS_NO_BUILTIN_OVERLOADED_OPERATOR_NEW_DELETE
return ::operator new(__size, __align_val);
# else
return __builtin_operator_new(__size, __align_val);
# endif
}
template <class ..._Args>
_LIBCPP_INLINE_VISIBILITY
void* __libcpp_operator_new(_Args ...__args) {
#if __has_builtin(__builtin_operator_new) && __has_builtin(__builtin_operator_delete)
return __builtin_operator_new(__args...);
#else
((void)__align);
#endif
#ifdef _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE
return ::operator new(__size);
#else
return __builtin_operator_new(__size);
return ::operator new(__args...);
#endif
}
struct _DeallocateCaller {
static inline _LIBCPP_INLINE_VISIBILITY
void __do_deallocate_handle_size_align(void *__ptr, size_t __size, size_t __align) {
template <class ..._Args>
_LIBCPP_INLINE_VISIBILITY
void __libcpp_operator_delete(_Args ...__args) {
#if __has_builtin(__builtin_operator_new) && __has_builtin(__builtin_operator_delete)
__builtin_operator_delete(__args...);
#else
::operator delete(__args...);
#endif
}
inline _LIBCPP_INLINE_VISIBILITY
void *__libcpp_allocate(size_t __size, size_t __align) {
#ifndef _LIBCPP_HAS_NO_ALIGNED_ALLOCATION
if (__is_overaligned_for_new(__align)) {
const align_val_t __align_val = static_cast<align_val_t>(__align);
return __libcpp_operator_new(__size, __align_val);
}
#endif
(void)__align;
return __libcpp_operator_new(__size);
}
template <class ..._Args>
_LIBCPP_INLINE_VISIBILITY
void __do_deallocate_handle_size(void *__ptr, size_t __size, _Args ...__args) {
#ifdef _LIBCPP_HAS_NO_SIZED_DEALLOCATION
(void)__size;
return std::__libcpp_operator_delete(__ptr, __args...);
#else
return std::__libcpp_operator_delete(__ptr, __size, __args...);
#endif
}
inline _LIBCPP_INLINE_VISIBILITY
void __libcpp_deallocate(void* __ptr, size_t __size, size_t __align) {
#if defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION)
((void)__align);
(void)__align;
return __do_deallocate_handle_size(__ptr, __size);
#else
if (__is_overaligned_for_new(__align)) {
@ -264,105 +318,56 @@ struct _DeallocateCaller {
return __do_deallocate_handle_size(__ptr, __size);
}
#endif
}
static inline _LIBCPP_INLINE_VISIBILITY
void __do_deallocate_handle_align(void *__ptr, size_t __align) {
#if defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION)
((void)__align);
return __do_call(__ptr);
#else
if (__is_overaligned_for_new(__align)) {
const align_val_t __align_val = static_cast<align_val_t>(__align);
return __do_call(__ptr, __align_val);
} else {
return __do_call(__ptr);
}
#endif
}
private:
static inline void __do_deallocate_handle_size(void *__ptr, size_t __size) {
#ifdef _LIBCPP_HAS_NO_SIZED_DEALLOCATION
((void)__size);
return __do_call(__ptr);
#else
return __do_call(__ptr, __size);
#endif
}
#ifndef _LIBCPP_HAS_NO_ALIGNED_ALLOCATION
static inline void __do_deallocate_handle_size(void *__ptr, size_t __size, align_val_t __align) {
#ifdef _LIBCPP_HAS_NO_SIZED_DEALLOCATION
((void)__size);
return __do_call(__ptr, __align);
#else
return __do_call(__ptr, __size, __align);
#endif
}
#endif
private:
template <class _A1, class _A2>
static inline void __do_call(void *__ptr, _A1 __a1, _A2 __a2) {
#if defined(_LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE) || \
defined(_LIBCPP_HAS_NO_BUILTIN_OVERLOADED_OPERATOR_NEW_DELETE)
return ::operator delete(__ptr, __a1, __a2);
#else
return __builtin_operator_delete(__ptr, __a1, __a2);
#endif
}
template <class _A1>
static inline void __do_call(void *__ptr, _A1 __a1) {
#if defined(_LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE) || \
defined(_LIBCPP_HAS_NO_BUILTIN_OVERLOADED_OPERATOR_NEW_DELETE)
return ::operator delete(__ptr, __a1);
#else
return __builtin_operator_delete(__ptr, __a1);
#endif
}
static inline void __do_call(void *__ptr) {
#ifdef _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE
return ::operator delete(__ptr);
#else
return __builtin_operator_delete(__ptr);
#endif
}
};
inline _LIBCPP_INLINE_VISIBILITY void __libcpp_deallocate(void* __ptr, size_t __size, size_t __align) {
_DeallocateCaller::__do_deallocate_handle_size_align(__ptr, __size, __align);
}
inline _LIBCPP_INLINE_VISIBILITY void __libcpp_deallocate_unsized(void* __ptr, size_t __align) {
_DeallocateCaller::__do_deallocate_handle_align(__ptr, __align);
}
template <class _Tp>
_LIBCPP_NODISCARD_AFTER_CXX17 inline
_LIBCPP_CONSTEXPR _Tp* __launder(_Tp* __p) _NOEXCEPT
{
static_assert (!(is_function<_Tp>::value), "can't launder functions" );
static_assert (!(is_same<void, typename remove_cv<_Tp>::type>::value), "can't launder cv-void" );
#ifdef _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER
return __builtin_launder(__p);
#if defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION)
(void)__align;
return __libcpp_operator_delete(__ptr);
#else
return __p;
if (__is_overaligned_for_new(__align)) {
const align_val_t __align_val = static_cast<align_val_t>(__align);
return __libcpp_operator_delete(__ptr, __align_val);
} else {
return __libcpp_operator_delete(__ptr);
}
#endif
}
#if _LIBCPP_STD_VER > 14
template <class _Tp>
_LIBCPP_NODISCARD_AFTER_CXX17 inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_NODISCARD_AFTER_CXX17 inline _LIBCPP_HIDE_FROM_ABI
_LIBCPP_CONSTEXPR _Tp* __launder(_Tp* __p) _NOEXCEPT
{
static_assert (!(is_function<_Tp>::value), "can't launder functions" );
static_assert (!(is_same<void, __remove_cv_t<_Tp> >::value), "can't launder cv-void" );
return __builtin_launder(__p);
}
#if _LIBCPP_STD_VER >= 17
template <class _Tp>
_LIBCPP_NODISCARD_AFTER_CXX17 inline _LIBCPP_HIDE_FROM_ABI
constexpr _Tp* launder(_Tp* __p) noexcept
{
return _VSTD::__launder(__p);
}
#endif
#if _LIBCPP_STD_VER >= 17
#if defined(__GCC_DESTRUCTIVE_SIZE) && defined(__GCC_CONSTRUCTIVE_SIZE)
inline constexpr size_t hardware_destructive_interference_size = __GCC_DESTRUCTIVE_SIZE;
inline constexpr size_t hardware_constructive_interference_size = __GCC_CONSTRUCTIVE_SIZE;
#endif // defined(__GCC_DESTRUCTIVE_SIZE) && defined(__GCC_CONSTRUCTIVE_SIZE)
#endif // _LIBCPP_STD_VER >= 17
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_NEW
#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
# include <exception>
# include <type_traits>
#endif
#endif // _LIBCPP_NEW