/** @file
	@brief Proxy definitions for documentation purposes
	
	Definitions from this package are usually supplied via a compiler flag by CMake
	or by including @ref CommonBase.h.
*/

namespace Death {
//###==##====#=====--==~--~=~- --- -- -  -  -   -

/**
	@brief Whether the current build is for debugging purposes
	
	No need to @cpp #include @ce anything for this macro to be defined,
	it's supplied via a compiler flag by CMake. Usually present when the build
	configuration is set to `Debug`.
*/
#define DEATH_DEBUG
#undef DEATH_DEBUG

/**
	@brief Whether runtime event tracing is enabled
	
	No need to @cpp #include @ce anything for this macro to be defined,
	it's supplied via a compiler flag by CMake.
*/
#define DEATH_TRACE
#undef DEATH_TRACE

/**
	@brief Whether exception usage is suppressed

	Exception usage is automatically enabled according to the compiler support
	by checking the @cpp _CPPUNWIND @ce and @cpp __EXCEPTIONS @ce defines. If
	@cpp DEATH_SUPPRESS_EXCEPTIONS @ce is defined, exception support is explicitly
	disabled. In this case, @cpp throw @ce is usually replaced with asserts.
	
	No need to @cpp #include @ce anything for this macro to be defined,
	it's supplied via a compiler flag by CMake.
*/
#define DEATH_SUPPRESS_EXCEPTIONS
#undef DEATH_SUPPRESS_EXCEPTIONS

/**
	@brief Whether @ref Death::runtime_cast() and type information optimization is suppressed

	Type information optimization is usually automatically enabled if the compiler supports
	it. If @cpp DEATH_SUPPRESS_RUNTIME_CAST @ce is defined, this optimization is explicitly
	disabled. In this case, the standard @cpp dynamic_cast<T>() @ce is used instead.
	
	No need to @cpp #include @ce anything for this macro to be defined,
	it's supplied via a compiler flag by CMake.
*/
#define DEATH_SUPPRESS_RUNTIME_CAST
#undef DEATH_SUPPRESS_RUNTIME_CAST

/**
	@brief Build with runtime CPU dispatch

	Defined if the library is built with performance-critical code paths optimized
	for multiple architectures (such as SSE or AVX on x86), with the best matching
	variant selected at runtime based on detected CPU features. If not defined, the
	library is built with just a single variant that's picked at compile time
	depending on target architecture flags being passed to the compiler.

	The actual feature detection and dispatch both in the runtime and compile-time
	scenario is performed by the @relativeref{Death,Cpu} library. See
	@ref Cpu-usage-automatic-cached-dispatch for details and information about
	performance tradeoffs.
	
	No need to @cpp #include @ce anything for this macro to be defined,
	it's supplied via a compiler flag by CMake.
*/
#define DEATH_CPU_USE_RUNTIME_DISPATCH
#undef DEATH_CPU_USE_RUNTIME_DISPATCH

/**
	@brief GNU IFUNC is allowed to be used for runtime dispatch

	Defined if the @relativeref{Death,Cpu} library can perform runtime dispatch
	using [GNU IFUNC](https://sourceware.org/glibc/wiki/GNU_IFUNC), exposing the
	@ref DEATH_CPU_DISPATCHED_IFUNC() macro. Supported only on Linux with glibc
	and on Android with API 30+. See @ref Cpu-usage-automatic-cached-dispatch for
	details and information about performance tradeoffs.
	
	No need to @cpp #include @ce anything for this macro to be defined,
	it's supplied via a compiler flag by CMake.
*/
#define DEATH_CPU_USE_IFUNC
#undef DEATH_CPU_USE_IFUNC

/**
	@brief MSVC 2015 compatibility

	Defined if compatibility mode for Microsoft Visual C++ 2015 is enabled.
*/
#define DEATH_MSVC2015_COMPATIBILITY
#undef DEATH_MSVC2015_COMPATIBILITY

/**
	@brief MSVC 2017 compatibility

	Defined if compatibility mode for Microsoft Visual C++ 2017 is enabled.
*/
#define DEATH_MSVC2017_COMPATIBILITY
#undef DEATH_MSVC2017_COMPATIBILITY

/**
	@brief MSVC 2019 compatibility

	Defined if compatibility mode for Microsoft Visual C++ 2019 (or later) *without*
	the `/permissive-` flag set is enabled.
*/
#define DEATH_MSVC2019_COMPATIBILITY
#undef DEATH_MSVC2019_COMPATIBILITY

/**
	@brief Unix target

	Defined if the library is built for some Unix flavor (Linux, BSD, macOS, iOS, Android, ...).
	Note that while the behavior of Emscripten is closely emulating Unix systems,
	@ref DEATH_TARGET_UNIX is not defined there, only @ref DEATH_TARGET_EMSCRIPTEN.
*/
#define DEATH_TARGET_UNIX
#undef DEATH_TARGET_UNIX

/**
	@brief Apple target

	Defined if the library is built for Apple platforms (macOS, iOS).
*/
#define DEATH_TARGET_APPLE
#undef DEATH_TARGET_APPLE

/**
	@brief iOS target

	Defined if the library is built for iOS (device or simulator).
*/
#define DEATH_TARGET_IOS
#undef DEATH_TARGET_IOS

/**
	@brief iOS Simulator target

	Defined if the library is built for iOS Simulator.
*/
#define DEATH_TARGET_IOS_SIMULATOR
#undef DEATH_TARGET_IOS_SIMULATOR

/**
	@brief Windows target

	Defined if the library is built for Windows (desktop, Windows Store, Phone or Xbox).
*/
#define DEATH_TARGET_WINDOWS
#undef DEATH_TARGET_WINDOWS

/**
	@brief Windows RT target

	Defined if the library is built for Universal Windows Platform (Windows Store, Phone or Xbox).
	In this case, @ref DEATH_TARGET_WINDOWS is also defined.
*/
#define DEATH_TARGET_WINDOWS_RT
#undef DEATH_TARGET_WINDOWS_RT

/**
	@brief Emscripten target

	Defined if the library is built for [Emscripten](http://kripken.github.io/emscripten-site/).
	Note that while the behavior of Emscripten is closely emulating Unix systems,
	@ref DEATH_TARGET_UNIX is not defined there, only @ref DEATH_TARGET_EMSCRIPTEN.
*/
#define DEATH_TARGET_EMSCRIPTEN
#undef DEATH_TARGET_EMSCRIPTEN

/**
	@brief Android target

	Defined if the library is built for Android.
*/
#define DEATH_TARGET_ANDROID
#undef DEATH_TARGET_ANDROID

/**
	@brief Nintendo Switch target

	Defined if the library is built for Nintendo Switch.
*/
#define DEATH_TARGET_SWITCH
#undef DEATH_TARGET_SWITCH

/**
	@brief x86 target

	Defined if the library is built for x86 platforms (32 or 64-bit). Note that
	unlike other `DEATH_TARGET_*` variables, this variable,
	@ref DEATH_TARGET_ARM, @ref DEATH_TARGET_POWERPC, @ref DEATH_TARGET_RISCV, @ref DEATH_TARGET_WASM,
	@ref DEATH_TARGET_32BIT, @ref DEATH_TARGET_BIG_ENDIAN and derived
	instruction set variables are not exposed in CMake because the meaning is
	unclear on platforms with multi-architecture binaries. If neither
	@ref DEATH_TARGET_X86, @ref DEATH_TARGET_ARM, @ref DEATH_TARGET_POWERPC, @ref DEATH_TARGET_RISCV
	nor @ref DEATH_TARGET_WASM is defined, the platform might be either a very
	old pre-WebAssembly @ref DEATH_TARGET_EMSCRIPTEN or any other that the
	library doesn't know about yet.
*/
#define DEATH_TARGET_X86
#undef DEATH_TARGET_X86

/**
	@brief ARM target

	Defined if the library is built for ARM platforms (32 or 64-bit). Note that
	unlike other `DEATH_TARGET_*` variables, this variable,
	@ref DEATH_TARGET_X86, @ref DEATH_TARGET_POWERPC, @ref DEATH_TARGET_RISCV, @ref DEATH_TARGET_WASM,
	@ref DEATH_TARGET_32BIT, @ref DEATH_TARGET_BIG_ENDIAN and derived
	instruction set variables are not exposed in CMake because the meaning is
	unclear on platforms with multi-architecture binaries. If neither
	@ref DEATH_TARGET_X86, @ref DEATH_TARGET_ARM, @ref DEATH_TARGET_POWERPC, @ref DEATH_TARGET_RISCV
	nor @ref DEATH_TARGET_WASM is defined, the platform might be either a very
	old pre-WebAssembly @ref DEATH_TARGET_EMSCRIPTEN or any other that the
	library doesn't know about yet.
*/
#define DEATH_TARGET_ARM
#undef DEATH_TARGET_ARM

/**
	@brief PowerPC target

	Defined if the library is built for PowerPC platforms (32 or 64-bit). Note that
	unlike other `DEATH_TARGET_*` variables, this variable,
	@ref DEATH_TARGET_X86, @ref DEATH_TARGET_ARM, @ref DEATH_TARGET_RISCV, @ref DEATH_TARGET_WASM,
	@ref DEATH_TARGET_32BIT, @ref DEATH_TARGET_BIG_ENDIAN and derived
	instruction set variables are not exposed in CMake because the meaning is
	unclear on platforms with multi-architecture binaries. If neither
	@ref DEATH_TARGET_X86, @ref DEATH_TARGET_ARM, @ref DEATH_TARGET_POWERPC, @ref DEATH_TARGET_RISCV
	nor @ref DEATH_TARGET_WASM is defined, the platform might be either a very
	old pre-WebAssembly @ref DEATH_TARGET_EMSCRIPTEN or any other that the
	library doesn't know about yet.
*/
#define DEATH_TARGET_POWERPC
#undef DEATH_TARGET_POWERPC

/**
	@brief RISC-V target

	Defined if the library is built for RISC-V platforms (32 or 64-bit). Note that
	unlike other `DEATH_TARGET_*` variables, this variable,
	@ref DEATH_TARGET_X86, @ref DEATH_TARGET_ARM, @ref DEATH_TARGET_POWERPC, @ref DEATH_TARGET_WASM,
	@ref DEATH_TARGET_32BIT, @ref DEATH_TARGET_BIG_ENDIAN and derived
	instruction set variables are not exposed in CMake because the meaning is
	unclear on platforms with multi-architecture binaries. If neither
	@ref DEATH_TARGET_X86, @ref DEATH_TARGET_ARM, @ref DEATH_TARGET_POWERPC, @ref DEATH_TARGET_RISCV
	nor @ref DEATH_TARGET_WASM is defined, the platform might be either a very
	old pre-WebAssembly @ref DEATH_TARGET_EMSCRIPTEN or any other that the
	library doesn't know about yet.
*/
#define DEATH_TARGET_RISCV
#undef DEATH_TARGET_RISCV

/**
	@brief WebAssembly target

	Defined if the library is built for WebAssembly (32 or 64-bit). Note that
	unlike other `DEATH_TARGET_*` variables, this variable,
	@ref DEATH_TARGET_X86, @ref DEATH_TARGET_ARM, @ref DEATH_TARGET_POWERPC, @ref DEATH_TARGET_RISCV,
	@ref DEATH_TARGET_32BIT, @ref DEATH_TARGET_BIG_ENDIAN and derived
	instruction set variables are not exposed in CMake because the meaning is
	unclear on platforms with multi-architecture binaries. If neither
	@ref DEATH_TARGET_X86, @ref DEATH_TARGET_ARM, @ref DEATH_TARGET_POWERPC, @ref DEATH_TARGET_RISCV
	nor @ref DEATH_TARGET_WASM is defined, the platform might be either a very
	old pre-WebAssembly @ref DEATH_TARGET_EMSCRIPTEN or any other that the
	library doesn't know about yet.
*/
#define DEATH_TARGET_WASM
#undef DEATH_TARGET_WASM

/**
	@brief Whether the library is built for a 32-bit target

	Defined if the library is built for a 32-bit target. Not defined on 64-bit platforms.
*/
#define DEATH_TARGET_32BIT
#undef DEATH_TARGET_32BIT

/**
	@brief Whether the platform defaults to big-endian

	Defined when the platform defaults to big-endian (such as HP/PA RISC, Motorola 68k,
	Big-Endian MIPS, PowerPC and SPARC). Not defined on little-endian platforms (such
	as x86 and ARM). This macro only reflects the usual architecture default.
*/
#define DEATH_TARGET_BIG_ENDIAN
#undef DEATH_TARGET_BIG_ENDIAN

/**
	@brief GCC compiler

	Defined if the code is being compiled by GCC or GCC-compatible Clang (which is
	@ref DEATH_TARGET_APPLE_CLANG but not @ref DEATH_TARGET_CLANG_CL, for
	example). While this variable is exposed in CMake as well, it's not guaranteed
	that the reported compiler is consistent between CMake and C++ --- for example,
	a library can be built with GCC and then used via Clang.

	Major GCC version number can be accessed using the `__GNUC__` macro. Clang
	always reports itself as GCC 4.4, its version is reported in `__clang_major__`
	instead.
*/
#define DEATH_TARGET_GCC
#undef DEATH_TARGET_GCC

/**
	@brief Clang compiler

	Defined if the code is being compiled by Clang or any of its variants
	(@ref DEATH_TARGET_APPLE_CLANG, @ref DEATH_TARGET_CLANG_CL). If this
	variable is defined, usually @ref DEATH_TARGET_GCC is also defined, except
	for Clang-CL. While this variable is exposed in CMake as well, it's not
	guaranteed that the reported compiler is consistent between CMake and C++ ---
	for example, a library can be built with Clang and then used via GCC.

	Major Clang version number can be accessed using the `__clang_major__` macro,
	however note that Apple Clang (in Xcode)
	[uses its own numbering](https://en.wikipedia.org/wiki/Xcode#Toolchain_versions)
	--- for example Clang 10 is actually Apple Clang 12.
*/
#define DEATH_TARGET_CLANG
#undef DEATH_TARGET_CLANG

/**
	@brief Apple's Clang compiler

	Defined if the code is being compiled by Apple's Clang. If this variable is
	defined, @ref DEATH_TARGET_GCC and @ref DEATH_TARGET_CLANG are also
	defined. This is primarily useful when checking for Clang version, as Apple
	uses a different versioning scheme. While this variable is exposed in CMake as
	well, it's not guaranteed that the reported compiler is consistent between
	CMake and C++ --- for example, a library can be built with Clang and then used
	via GCC.

	Major Apple Clang version number can be accessed using the `__clang_major__`
	macro, which is the same macro as vanilla Clang. There is no macro that exposes
	the matching vanilla Clang version, the only option is to use
	[an external mapping table](https://en.wikipedia.org/wiki/Xcode#Toolchain_versions)
	--- for example Apple Clang 12 is actually Clang 10.
*/
#define DEATH_TARGET_APPLE_CLANG
#undef DEATH_TARGET_APPLE_CLANG

/**
	@brief Clang-CL compiler

	Defined if the code is being compiled by Clang with a MSVC frontend. If this
	variable is defined, @ref DEATH_TARGET_CLANG and @ref DEATH_TARGET_MSVC is
	also defined (but @ref DEATH_TARGET_GCC not). While this variable is exposed
	in CMake as well, it's not guaranteed that the reported compiler is consistent
	between CMake and C++ --- for example, a library can be built with Clang-CL and
	then used via MSVC.

	Clang-CL uses the same versioning scheme as vanilla Clang, accessible using the
	`__clang_major__` macro. It also exposes the `_MSC_VER` macro, reporting the
	MSVC version it's compatible with.
*/
#define DEATH_TARGET_CLANG_CL
#undef DEATH_TARGET_CLANG_CL

/**
	@brief Intel LLVM compiler

	Defined if the code is being compiled by Intel LLVM (oneAPI) compiler. While this
	variable is exposed in CMake as well, it's not guaranteed that the reported compiler
	is consistent between CMake and C++ --- for example, a library can be built with
	Intel LLVM and then used via Clang.
*/
#define DEATH_TARGET_INTEL_LLVM
#undef DEATH_TARGET_INTEL_LLVM

/**
	@brief MSVC compiler

	Defined if the code is being compiled by MSVC or Clang with a MSVC frontend. If
	this variable is defined, @ref DEATH_TARGET_CLANG might also be defined.
	While this variable is exposed in CMake as well, it's not guaranteed that the
	reported compiler is consistent between CMake and C++ --- for example, a
	library can be built with MSVC and then used via Clang-CL.

	MSVC version can be accessed using the `_MSC_VER` macro. The macro uses an
	[internal version numbering](https://en.wikipedia.org/wiki/Microsoft_Visual_C++#Internal_version_numbering),
	so for example MSVC 2019 16.7 (14.27) is reported as 1927.
*/
#define DEATH_TARGET_MSVC
#undef DEATH_TARGET_MSVC

/**
	@brief Cygwin environment

	Defined if the code is being compiled by Cygwin toolchain. If
	this variable is defined, @ref DEATH_TARGET_GCC and possibly also
	@ref DEATH_TARGET_CLANG are defined. While this variable is exposed in CMake
	as well, it's not guaranteed that the reported compiler is consistent between
	CMake and C++ --- for example, a library can be built with MSVC and then used
	via Clang-CL.
*/
#define DEATH_TARGET_CYGWIN
#undef DEATH_TARGET_CYGWIN

/**
	@brief MinGW compiler

	Defined if the code is being compiled by GCC / Clang running under MinGW. If
	this variable is defined, @ref DEATH_TARGET_GCC and possibly also
	@ref DEATH_TARGET_CLANG are defined. While this variable is exposed in CMake
	as well, it's not guaranteed that the reported compiler is consistent between
	CMake and C++ --- for example, a library can be built with MSVC and then used
	via Clang-CL.
*/
#define DEATH_TARGET_MINGW
#undef DEATH_TARGET_MINGW

/**
	@brief STL libc++ target

	Defined if the library is built against Clang [libc++](https://libcxx.llvm.org/)
	STL implementation. This is most common on Apple acOS and iOS and on newer
	Android NDKs, it's also sometimes used on Linux. Note that unlike other
	`DEATH_TARGET_*` variables, this variable, @ref DEATH_TARGET_LIBSTDCXX and
	@ref DEATH_TARGET_DINKUMWARE are not exposed in CMake because the detection
	is non-trivial.

	Major libc++ version number can be accessed using the `_LIBCPP_VERSION` version
	macro. While libc++ can only be used with Clang (and not GCC), its version
	might or might not be the same as `__clang_major__`.
*/
#define DEATH_TARGET_LIBCXX
#undef DEATH_TARGET_LIBCXX

/**
	@brief STL libstdc++ target

	Defined if the library is built against GCC [libstdc++](https://gcc.gnu.org/onlinedocs/libstdc++/)
	STL implementation. This is most common on Linux and under MinGW, note that
	Clang is able to use libstdc++ as well. Note that unlike other `DEATH_TARGET_*`
	variables, this variable, @ref DEATH_TARGET_LIBCXX and
	@ref DEATH_TARGET_DINKUMWARE are not exposed in CMake because the detection
	is non-trivial.

	Major libstdc++ version number can be accessed using the `_GLIBCXX_RELEASE`
	macro, however it's available only since libstdc++ 7. Older versions define
	just `__GLIBCXX__`, which contains a release date (and the dates, of course,
	[overlap for patch releases](https://stackoverflow.com/a/37119478) and can be
	just anything for custom GCC forks). If libstdc++ is used together with GCC, it
	can be assumed both have the same version; if libstdc++ is used together with
	Clang, the versions can be arbitrary.
*/
#define DEATH_TARGET_LIBSTDCXX
#undef DEATH_TARGET_LIBSTDCXX

/**
	@brief STL Dinkumware target

	Defined if the library is built against Dinkumware STL implementation (used by
	MSVC). Note that Clang is able to use this implementation as well.  Note that
	unlike other `DEATH_TARGET_*` variables, this variable,
	@ref DEATH_TARGET_LIBSTDCXX and @ref DEATH_TARGET_DINKUMWARE are not
	exposed in CMake because the detection is non-trivial.

	The MSVC standard library is closely tied to a compiler version, thus
	`_MSC_VER` can be used to determine its version on both MSVC and Clang-CL.
*/
#define DEATH_TARGET_DINKUMWARE
#undef DEATH_TARGET_DINKUMWARE

/**
	@brief SSE2 target

	Defined on @ref DEATH_TARGET_X86 "x86" if
	[Streaming SIMD Extensions 2](https://en.wikipedia.org/wiki/SSE2) are enabled
	at compile time (`-msse2` or higher on GCC/Clang, `/arch:SSE2` or higher on
	MSVC). All x86-64 targets support SSE2. Implied by @ref DEATH_TARGET_SSE3.
*/
#define DEATH_TARGET_SSE2
#undef DEATH_TARGET_SSE2

/**
	@brief SSE3 target

	Defined on @ref DEATH_TARGET_X86 "x86" if
	[Streaming SIMD Extensions 3](https://en.wikipedia.org/wiki/SSE3) are enabled
	at compile time (on GCC/Clang it's `-msse3` and higher, MSVC doesn't have a
	direct option and it's only implied by `/arch:AVX`). Superset of
	@ref DEATH_TARGET_SSE2, implied by @ref DEATH_TARGET_SSSE3.
*/
#define DEATH_TARGET_SSE3
#undef DEATH_TARGET_SSE3

/**
	@brief SSSE3 target

	Defined on @ref DEATH_TARGET_X86 "x86" if
	[Supplemental Streaming SIMD Extensions 3](https://en.wikipedia.org/wiki/SSSE3)
	are enabled at compile time (on GCC/Clang it's `-mssse3` and higher, MSVC
	doesn't have a direct option and it's only implied by `/arch:AVX`). Superset of
	@ref DEATH_TARGET_SSE3, implied by @ref DEATH_TARGET_SSE41.

	Note that certain older AMD processors have [SSE4a](https://en.wikipedia.org/wiki/SSE4#SSE4a)
	but neither SSSE3 nor SSE4.1. Both can be however treated as a subset of SSE4.1
	to a large extent, and it's recommended to use @ref DEATH_TARGET_SSE41 to
	detect those.
*/
#define DEATH_TARGET_SSSE3
#undef DEATH_TARGET_SSSE3

/**
	@brief SSE4.1 target

	Defined on @ref DEATH_TARGET_X86 "x86" if
	[Streaming SIMD Extensions 4.1](https://en.wikipedia.org/wiki/SSE4#SSE4.1)
	are enabled at compile time (on GCC/Clang it's `-msse4.1` and higher, MSVC
	doesn't have a direct option and it's only implied by `/arch:AVX`). Superset of
	@ref DEATH_TARGET_SSSE3, implied by @ref DEATH_TARGET_SSE42.

	Note that certain older AMD processors have [SSE4a](https://en.wikipedia.org/wiki/SSE4#SSE4a)
	but neither SSSE3 nor SSE4.1. Both can be however treated as a subset of SSE4.1
	to a large extent, and it's recommended to use @ref DEATH_TARGET_SSE41 to
	detect those.
*/
#define DEATH_TARGET_SSE41
#undef DEATH_TARGET_SSE41

/**
	@brief SSE4.2 target

	Defined on @ref DEATH_TARGET_X86 "x86" if
	[Streaming SIMD Extensions 4.2](https://en.wikipedia.org/wiki/SSE4#SSE4.2)
	are enabled at compile time (on GCC/Clang it's `-msse4.2` and higher, MSVC
	doesn't have a direct option and it's only implied by `/arch:AVX`). Superset of
	@ref DEATH_TARGET_SSE41, implied by @ref DEATH_TARGET_AVX.
*/
#define DEATH_TARGET_SSE42
#undef DEATH_TARGET_SSE42

/**
	@brief Target with POPCNT instructions

	Defined on @ref DEATH_TARGET_X86 "x86" if
	[POPCNT](https://en.wikipedia.org/wiki/X86_Bit_manipulation_instruction_set#ABM_(Advanced_Bit_Manipulation))
	is enabled at compile time. On GCC/Clang it's `-mpopcnt` and is also implied by
	`-msse4.2` and higher, MSVC doesn't have a direct option but it's assumed to
	be implied by `/arch:AVX`. To avoid failures at runtime, prefer to detect its
	presence with @relativeref{Death,Cpu::runtimeFeatures()}.
*/
#define DEATH_TARGET_POPCNT
#undef DEATH_TARGET_POPCNT

/**
	@brief Target with LZCNT instructions

	Defined on @ref DEATH_TARGET_X86 "x86" if
	[LZCNT](https://en.wikipedia.org/wiki/X86_Bit_manipulation_instruction_set#ABM_(Advanced_Bit_Manipulation))
	is enabled at compile time (on GCC/Clang it's `-mlznct`, MSVC doesn't have a
	direct option but it's assumed to be implied by `/arch:AVX2`). However note
	that this instruction has encoding compatible with an earlier `BSR` instruction
	which has a slightly different behavior. To avoid wrong results if it isn't
	available, prefer to detect its presence with
	@relativeref{Death,Cpu::runtimeFeatures()} instead.
*/
#define DEATH_TARGET_LZCNT
#undef DEATH_TARGET_LZCNT

/**
	@brief Target with BMI1 instructions

	Defined on @ref DEATH_TARGET_X86 "x86" if
	[BMI1](https://en.wikipedia.org/wiki/X86_Bit_manipulation_instruction_set#BMI1_(Bit_Manipulation_Instruction_Set_1))
	including the `TZCNT` instruction is enabled at compile time (on GCC/Clang it's
	`-mbmi`, MSVC doesn't have a direct option but it's assumed to be implied by
	`/arch:AVX2`). However note that the `TZCNT` instruction has encoding
	compatible with an earlier `BSF` instruction which has a slightly different
	behavior. To avoid wrong results if it isn't available, prefer to detect its
	presence with @relativeref{Death,Cpu::runtimeFeatures()} instead.

	Presence of this instruction set is *not* implied by @ref DEATH_TARGET_BMI2.
*/
#define DEATH_TARGET_BMI1
#undef DEATH_TARGET_BMI1

/**
	@brief Target with BMI2 instructions

	Defined on @ref DEATH_TARGET_X86 "x86" if
	[BMI2](https://en.wikipedia.org/wiki/X86_Bit_manipulation_instruction_set#BMI2_(Bit_Manipulation_Instruction_Set_2))
	is enabled at compile time. On GCC/Clang it's `-mbmi2`, MSVC doesn't have a
	direct option but it's assumed to be implied by `/arch:AVX2`. To avoid failures
	at runtime, prefer to detect its presence with
	@relativeref{Death,Cpu::runtimeFeatures()}.

	Presence of this instruction set does *not* imply @ref DEATH_TARGET_BMI1.
*/
#define DEATH_TARGET_BMI2
#undef DEATH_TARGET_BMI2

/**
	@brief Target with CLFLUSHOPT instruction

	Defined on @ref DEATH_TARGET_X86 "x86" if CLFLUSHOPT (Flush Cache Line Optimized)
	instruction is enabled at compile time. On GCC/Clang it's `-mclflushopt`, MSVC
	doesn't have a direct option.
*/
#define DEATH_TARGET_CLFLUSHOPT
#undef DEATH_TARGET_CLFLUSHOPT

/**
	@brief AVX target

	Defined on @ref DEATH_TARGET_X86 "x86" if
	[Advanced Vector Extensions](https://en.wikipedia.org/wiki/Advanced_Vector_Extensions)
	are enabled at compile time (`-mavx` and higher on GCC/Clang, `/arch:AVX` on
	MSVC). Superset of @ref DEATH_TARGET_SSE42, implied by @ref DEATH_TARGET_AVX2.
*/
#define DEATH_TARGET_AVX
#undef DEATH_TARGET_AVX

/**
	@brief AVX target with F16C

	Defined on @ref DEATH_TARGET_X86 "x86" if the
	[F16C instruction set](https://en.wikipedia.org/wiki/F16C) is enabled at
	compile time. On GCC/Clang it's `-mf16c`, MSVC doesn't have a direct option but
	it's assumed to be implied by `/arch:AVX2`. To avoid failures at runtime,
	prefer to detect its presence with @relativeref{Death,Cpu::runtimeFeatures()}.
*/
#define DEATH_TARGET_AVX_F16C
#undef DEATH_TARGET_AVX_F16C

/**
	@brief AVX target with FMA

	Defined on @ref DEATH_TARGET_X86 "x86" if the
	[FMA3 instruction set](https://en.wikipedia.org/wiki/FMA_instruction_set) is
	enabled at compile time. On GCC/Clang it's `-mfma`, MSVC doesn't have a direct
	option but it's assumes to be implied by `/arch:AVX2`. To avoid failures at
	runtime, prefer to detect its presence with
	@relativeref{Death,Cpu::runtimeFeatures()}.

	The FMA4 instruction set, which used to be supported only in certain range of
	AMD processors and isn't anymore, is not detected, and AMD switched to FMA3
	since.
*/
#define DEATH_TARGET_AVX_FMA
#undef DEATH_TARGET_AVX_FMA

/**
	@brief AVX2 target

	Defined on @ref DEATH_TARGET_X86 "x86" if
	[Advanced Vector Extensions 2](https://en.wikipedia.org/wiki/Advanced_Vector_Extensions#Advanced_Vector_Extensions_2)
	are enabled at compile time (`-mavx2` and higher on GCC/Clang, `/arch:AVX2` on
	MSVC). Superset of @ref DEATH_TARGET_AVX, implied by @ref DEATH_TARGET_AVX512F.
*/
#define DEATH_TARGET_AVX2
#undef DEATH_TARGET_AVX2

/**
	@brief AVX-512 Foundation target

	Defined on @ref DEATH_TARGET_X86 "x86" if [AVX-512](https://en.wikipedia.org/wiki/AVX-512)
	Foundation instructions are enabled at compile time (`-mavx512f` and higher on
	GCC/Clang, `/arch:AVX512` on MSVC). Superset of @ref DEATH_TARGET_AVX2.
*/
#define DEATH_TARGET_AVX512F
#undef DEATH_TARGET_AVX512F

/**
	@brief NEON target

	Defined on @ref DEATH_TARGET_ARM "ARM" if
	[ARM NEON](https://en.wikipedia.org/wiki/ARM_architecture#Advanced_SIMD_(Neon))
	instructions are enabled at compile time (`-mfpu=neon` on GCC/Clang, implicitly
	supported on ARM64). Implied by @ref DEATH_TARGET_NEON_FMA.

	Apart from NEON, there's several other mutually incompatible ARM instruction
	sets. Detection for these will be added when the platforms become more
	widespread:

	-   Helium, which is a low-power alternative to NEON
	-   SVE, which is a HPC-focused alternative to NEON, in 2021 found mostly just
		on [AWS Graviton](https://aws.amazon.com/ec2/graviton/)
	-   SVE2, which is a next-generation vector instruction set designed to be a
		successor to both NEON and SVE, scheduled to appear in production in around
		2022
	-   AMX, which is Apple's proprietary and patented instruction set available
		only on their own hardware
*/
#define DEATH_TARGET_NEON
#undef DEATH_TARGET_NEON

/**
	@brief NEON target with FMA

	Defined on @ref DEATH_TARGET_ARM "ARM" if NEON FMA instructions are enabled
	at compile time (`-mfpu=neon-vfpv4` on GCC/Clang on 32-bit ARM, implicitly
	supported on ARM64). Not defined if FMA is only available for scalar code and
	not for NEON. Superset of @ref DEATH_TARGET_NEON, implied by
	@ref DEATH_TARGET_NEON_FP16.
*/
#define DEATH_TARGET_NEON_FMA
#undef DEATH_TARGET_NEON_FMA

/**
	@brief NEON target with FP16 vector arithmetic

	Defined on @ref DEATH_TARGET_ARM "ARM" if ARMv8.2-a NEON FP16 vector
	arithmetic support is enabled at compile time (`-march=armv8.2-a+fp16` on
	GCC/Clang). Superset of @ref DEATH_TARGET_NEON_FMA.
*/
#define DEATH_TARGET_NEON_FP16
#undef DEATH_TARGET_NEON_FP16

/**
	@brief SIMD128 target

	Defined on @ref DEATH_TARGET_WASM "WebAssembly" if
	[128-bit SIMD](https://github.com/webassembly/simd) instructions are enabled at
	compile time (`-msimd128` passed to Clang), and the compiler supports the
	finalized version of the intrinsics, which is since Clang 13 and Emscripten
	2.0.18. Emscripten SDK 2.0.13 to 2.0.17 ship with a Clang that reports as 13
	but isn't actually the final version.
*/
#define DEATH_TARGET_SIMD128
#undef DEATH_TARGET_SIMD128

}