Attribute Index (Using the GNU Compiler Collection (GCC))

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A.2 Attribute Index ¶

This index lists GNU extension attributes only, e.g. those that should use the ‘gnu::’ namespace prefix in the standard C and C++ attribute syntax.

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A
	Index Entry	Section

	`abi_tag`	C++ Attributes
	`absdata`, AVR	AVR Attributes
	`access`	Common Attributes
	`address`, AVR	AVR Attributes
	`alias`	Common Attributes
	`aligned`	Common Attributes
	`alloc_align`	Common Attributes
	`alloc_size`	Common Attributes
	`altivec`, PowerPC	PowerPC Attributes
	`always_inline`	Common Attributes
	`amdgpu_hsa_kernel`, AMD GCN	AMD GCN Attributes
	`arch=`, ARM	ARM Attributes
	`artificial`	Common Attributes
	`assume`	Common Attributes
	`assume_aligned`	Common Attributes
	`aux`, ARC	ARC Attributes

B
	`bank_switch`, M32C	M32C Attributes
	`below100`, Xstormy16	Xstormy16 Attributes
	`break_handler`, MicroBlaze	MicroBlaze Attributes
	`brk_interrupt`, RL78	RL78 Attributes
	`btf_decl_tag`	Common Attributes
	`btf_type_tag`	Common Attributes

C
	`callee_pop_aggregate_return`, x86	x86 Attributes
	`cdecl`, x86-32	x86 Attributes
	`cf_check`, x86	x86 Attributes
	`cleanup`	Common Attributes
	`code_readable`, MIPS	MIPS Attributes
	`cold`	Common Attributes
	`cold`	C++ Attributes
	`common`	Common Attributes
	`const`	Common Attributes
	`constructor`	Common Attributes
	`copy`	Common Attributes
	`counted_by`	Common Attributes
	`critical`, MSP430	MSP430 Attributes

D
	`deprecated`	Common Attributes
	`designated_init`	Common Attributes
	`destructor`	Common Attributes
	`disinterrupt`, Epiphany	Epiphany Attributes
	`dllexport`, Microsoft Windows	Microsoft Windows Attributes
	`dllimport`, Microsoft Windows	Microsoft Windows Attributes

E
	`eightbit_data`, H8/300	H8/300 Attributes
	`either`, MSP430	MSP430 Attributes
	`error`	Common Attributes
	`exception_handler`, Blackfin	Blackfin Attributes
	`exception`, NDS32	NDS32 Attributes
	`expected_throw`	Common Attributes
	`externally_visible`	Common Attributes

F
	`fallthrough`	Common Attributes
	`far`, MIPS	MIPS Attributes
	`fast_interrupt`, M32C	M32C Attributes
	`fast_interrupt`, MicroBlaze	MicroBlaze Attributes
	`fast_interrupt`, RX	RX Attributes
	`fastcall`, x86-32	x86 Attributes
	`fd_arg`	Common Attributes
	`fd_arg_read`	Common Attributes
	`fd_arg_write`	Common Attributes
	`fentry_name`, x86	x86 Attributes
	`fentry_section`, x86	x86 Attributes
	`flatten`	Common Attributes
	`force_align_arg_pointer`, x86	x86 Attributes
	`format`	Common Attributes
	`format_arg`	Common Attributes
	`forwarder_section`, Epiphany	Epiphany Attributes
	`function_return`, x86	x86 Attributes
	`function_vector`, H8/300	H8/300 Attributes
	`function_vector`, M16C/M32C	M32C Attributes
	`function_vector`, SH	SH Attributes

G
	`gcc_struct`, PowerPC	PowerPC Attributes
	`gcc_struct`, x86	x86 Attributes
	`general-regs-only`, ARM	ARM Attributes
	`gnu_inline`	Common Attributes

H
	`hardbool`	Common Attributes
	`hot`	Common Attributes
	`hot`	C++ Attributes
	`hotpatch`, S/390	S/390 Attributes

I
	`ifunc`	Common Attributes
	`indirect_branch`, x86	x86 Attributes
	`indirect_return`, x86	x86 Attributes
	`init_priority`	C++ Attributes
	`interrupt`	Common Attributes
	`interrupt_handler`	Common Attributes
	`interrupt_handler`, Blackfin	Blackfin Attributes
	`interrupt_handler`, H8/300	H8/300 Attributes
	`interrupt_handler`, m68k	m68k Attributes
	`interrupt_handler`, MicroBlaze	MicroBlaze Attributes
	`interrupt_handler`, SH	SH Attributes
	`interrupt_handler`, V850	V850 Attributes
	`interrupt_thread`, fido	m68k Attributes
	`interrupt`, ARC	ARC Attributes
	`interrupt`, ARM	ARM Attributes
	`interrupt`, AVR	AVR Attributes
	`interrupt`, C-SKY	C-SKY Attributes
	`interrupt`, Epiphany	Epiphany Attributes
	`interrupt`, M32C	M32C Attributes
	`interrupt`, M32R/D	M32R/D Attributes
	`interrupt`, m68k	m68k Attributes
	`interrupt`, MIPS	MIPS Attributes
	`interrupt`, MSP430	MSP430 Attributes
	`interrupt`, NDS32	NDS32 Attributes
	`interrupt`, RISC-V	RISC-V Attributes
	`interrupt`, RL78	RL78 Attributes
	`interrupt`, RX	RX Attributes
	`interrupt`, V850	V850 Attributes
	`interrupt`, Visium	Visium Attributes
	`interrupt`, x86	x86 Attributes
	`interrupt`, Xstormy16	Xstormy16 Attributes
	`interrupt(num)`, AVR	AVR Attributes
	`io_low`, AVR	AVR Attributes
	`io`, AVR	AVR Attributes
	`isr`, ARM	ARM Attributes
	`isr`, C-SKY	C-SKY Attributes

J
	`jli_always`, ARC	ARC Attributes
	`jli_fixed`, ARC	ARC Attributes

K
	`keep_interrupts_masked`, MIPS	MIPS Attributes
	`kernel helper`, BPF	BPF Attributes
	`kernel`, Nvidia PTX	Nvidia PTX Attributes
	`kspisusp`, Blackfin	Blackfin Attributes

L
	`l1_data_A`, Blackfin	Blackfin Attributes
	`l1_data_B`, Blackfin	Blackfin Attributes
	`l1_data`, Blackfin	Blackfin Attributes
	`l1_text`, Blackfin	Blackfin Attributes
	`l2`, Blackfin	Blackfin Attributes
	`leaf`	Common Attributes
	`long_call`, ARC	ARC Attributes
	`long_call`, ARM	ARM Attributes
	`long_call`, Epiphany	Epiphany Attributes
	`long_call`, MIPS	MIPS Attributes
	`longcall`, Blackfin	Blackfin Attributes
	`longcall`, PowerPC	PowerPC Attributes
	`lower`, MSP430	MSP430 Attributes

M
	`malloc`	Common Attributes
	`may_alias`	Common Attributes
	`medium_call`, ARC	ARC Attributes
	`micromips`, MIPS	MIPS Attributes
	`mips16`, MIPS	MIPS Attributes
	`mode`	Common Attributes
	`model`, IA-64	IA-64 Attributes
	`model`, LoongArch	LoongArch Attributes
	`model`, M32R/D	M32R/D Attributes
	`monitor`, H8/300	H8/300 Attributes
	`ms_abi`, x86	x86 Attributes
	`ms_hook_prologue`, x86	x86 Attributes
	`ms_struct`, PowerPC	PowerPC Attributes
	`ms_struct`, x86	x86 Attributes
	`musttail`	Common Attributes

N
	`naked`	Common Attributes
	`near`, MIPS	MIPS Attributes
	`nested_ready`, NDS32	NDS32 Attributes
	`nested`, NDS32	NDS32 Attributes
	`nesting`, Blackfin	Blackfin Attributes
	`nmi_handler`, Blackfin	Blackfin Attributes
	`nmi`, NDS32	NDS32 Attributes
	`no_callee_saved_registers`, x86	x86 Attributes
	`no_caller_saved_registers`, x86	x86 Attributes
	`no_dangling`	C++ Attributes
	`no_gccisr`, AVR	AVR Attributes
	`no_icf`	Common Attributes
	`no_instrument_function`	Common Attributes
	`no_reorder`	Common Attributes
	`no_sanitize_address`	Common Attributes
	`no_sanitize_thread`	Common Attributes
	`no_sanitize_undefined`	Common Attributes
	`no_split_stack`	Common Attributes
	`no_stack_limit`	Common Attributes
	`no_stack_protector`	Common Attributes
	`noblock`, AVR	AVR Attributes
	`nocf_check`, x86	x86 Attributes
	`noclone`	Common Attributes
	`nocommon`	Common Attributes
	`nocompression`, MIPS	MIPS Attributes
	`nodirect_extern_access`, x86	x86 Attributes
	`noinit`	Common Attributes
	`noinline`	Common Attributes
	`noipa`	Common Attributes
	`nomicromips`, MIPS	MIPS Attributes
	`nomips16`, MIPS	MIPS Attributes
	`nonnull`	Common Attributes
	`nonnull_if_nonzero`	Common Attributes
	`nonstring`	Common Attributes
	`noplt`	Common Attributes
	`noreturn`	Common Attributes
	`nosave_low_regs`, SH	SH Attributes
	`not_nested`, NDS32	NDS32 Attributes
	`nothrow`	Common Attributes
	`notshared`, ARM	ARM Attributes
	`null_terminated_string_arg`	Common Attributes

O
	`objc_nullability`	Common Attributes
	`objc_root_class`	Common Attributes
	`optimize`	Common Attributes
	`OS_main`, AVR	AVR Attributes
	`OS_task`, AVR	AVR Attributes
	`OS_Task`, H8/300	H8/300 Attributes

P
	`packed`	Common Attributes
	`partial_save`, NDS32	NDS32 Attributes
	`patchable_function_entry`	Common Attributes
	`pcs`, ARM	ARM Attributes
	`persistent`	Common Attributes
	`prefer-vector-width`, x86	x86 Attributes
	`preserve_access_index`, BPF	BPF Attributes
	`preserve_none`, x86	x86 Attributes
	`progmem`, AVR	AVR Attributes
	`pure`	Common Attributes

R
	`reentrant`, MSP430	MSP430 Attributes
	`regparm`, x86	x86 Attributes
	`renesas`, SH	SH Attributes
	`reproducible`	Common Attributes
	`resbank`, SH	SH Attributes
	`reset`, NDS32	NDS32 Attributes
	`retain`	Common Attributes
	`returns_nonnull`	Common Attributes
	`returns_twice`	Common Attributes
	`riscv_vector_cc`, RISC-V	RISC-V Attributes

S
	`saddr`, RL78	RL78 Attributes
	`save_all`, NDS32	NDS32 Attributes
	`save_volatiles`, MicroBlaze	MicroBlaze Attributes
	`saveall`, Blackfin	Blackfin Attributes
	`saveall`, H8/300	H8/300 Attributes
	`scalar_storage_order`	Common Attributes
	`sda`, V850	V850 Attributes
	`section`	Common Attributes
	`secure_call`, ARC	ARC Attributes
	`selectany`, Microsoft Windows	Microsoft Windows Attributes
	`sentinel`	Common Attributes
	`shared`, Microsoft Windows	Microsoft Windows Attributes
	`shared`, Nvidia PTX	Nvidia PTX Attributes
	`short_call`, ARC	ARC Attributes
	`short_call`, ARM	ARM Attributes
	`short_call`, Epiphany	Epiphany Attributes
	`short_call`, MIPS	MIPS Attributes
	`shortcall`, Blackfin	Blackfin Attributes
	`shortcall`, PowerPC	PowerPC Attributes
	`signal`, AVR	AVR Attributes
	`signal(num)`, AVR	AVR Attributes
	`simd`	Common Attributes
	`sp_switch`, SH	SH Attributes
	`sseregparm`, x86	x86 Attributes
	`stack_protect`	Common Attributes
	`stdcall`, x86-32	x86 Attributes
	`strict_flex_array`	Common Attributes
	`strub`	Common Attributes
	`symver`	Common Attributes
	`syscall_linkage`, IA-64	IA-64 Attributes
	`sysv_abi`, x86	x86 Attributes

T
	`tainted_args`	Common Attributes
	`target`	Common Attributes
	`target_clones`	Common Attributes
	`target_clones`, LoongArch	LoongArch Attributes
	`target_version`	Common Attributes
	`target_version`, LoongArch	LoongArch Attributes
	`target`, AArch64	AArch64 Attributes
	`target`, ARM	ARM Attributes
	`target`, LoongArch	LoongArch Attributes
	`target`, PowerPC	PowerPC Attributes
	`target`, RISC-V	RISC-V Attributes
	`target`, S/390	S/390 Attributes
	`target`, x86	x86 Attributes
	`target("3dnow")`, x86	x86 Attributes
	`target("3dnowa")`, x86	x86 Attributes
	`target("80387")`, x86	x86 Attributes
	`target("abm")`, x86	x86 Attributes
	`target("adx")`, x86	x86 Attributes
	`target("aes")`, x86	x86 Attributes
	`target("align-stringops")`, x86	x86 Attributes
	`target("altivec")`, PowerPC	PowerPC Attributes
	`target("amx-avx512")`, x86	x86 Attributes
	`target("amx-bf16")`, x86	x86 Attributes
	`target("amx-complex")`, x86	x86 Attributes
	`target("amx-fp16")`, x86	x86 Attributes
	`target("amx-fp8")`, x86	x86 Attributes
	`target("amx-int8")`, x86	x86 Attributes
	`target("amx-movrs")`, x86	x86 Attributes
	`target("amx-tf32")`, x86	x86 Attributes
	`target("amx-tile")`, x86	x86 Attributes
	`target("apxf")`, x86	x86 Attributes
	`target("arch=")`, AArch64	AArch64 Attributes
	`target("arch=")`, LoongArch	LoongArch Attributes
	`target("arch=")`, RISC-V	RISC-V Attributes
	`target("arch=ARCH")`, x86	x86 Attributes
	`target("arm")`, ARM	ARM Attributes
	`target("avoid-indexed-addresses")`, PowerPC	PowerPC Attributes
	`target("avx")`, x86	x86 Attributes
	`target("avx10.1")`, x86	x86 Attributes
	`target("avx10.2")`, x86	x86 Attributes
	`target("avx2")`, x86	x86 Attributes
	`target("avx512bitalg")`, x86	x86 Attributes
	`target("avx512bw")`, x86	x86 Attributes
	`target("avx512cd")`, x86	x86 Attributes
	`target("avx512dq")`, x86	x86 Attributes
	`target("avx512er")`, x86	x86 Attributes
	`target("avx512f")`, x86	x86 Attributes
	`target("avx512ifma")`, x86	x86 Attributes
	`target("avx512vbmi")`, x86	x86 Attributes
	`target("avx512vbmi2")`, x86	x86 Attributes
	`target("avx512vl")`, x86	x86 Attributes
	`target("avx512vnni")`, x86	x86 Attributes
	`target("avx512vpopcntdq")`, x86	x86 Attributes
	`target("avxifma")`, x86	x86 Attributes
	`target("avxneconvert")`, x86	x86 Attributes
	`target("avxvnni")`, x86	x86 Attributes
	`target("avxvnniint16")`, x86	x86 Attributes
	`target("avxvnniint8")`, x86	x86 Attributes
	`target("bmi")`, x86	x86 Attributes
	`target("bmi2")`, x86	x86 Attributes
	`target("branch-protection")`, AArch64	AArch64 Attributes
	`target("cld")`, x86	x86 Attributes
	`target("cldemote")`, x86	x86 Attributes
	`target("clflushopt")`, x86	x86 Attributes
	`target("clwb")`, x86	x86 Attributes
	`target("clzero")`, x86	x86 Attributes
	`target("cmodel=")`, AArch64	AArch64 Attributes
	`target("cmodel=")`, LoongArch	LoongArch Attributes
	`target("cmpb")`, PowerPC	PowerPC Attributes
	`target("cmpccxadd")`, x86	x86 Attributes
	`target("cpu=")`, AArch64	AArch64 Attributes
	`target("cpu=")`, RISC-V	RISC-V Attributes
	`target("cpu=CPU")`, PowerPC	PowerPC Attributes
	`target("crc32")`, x86	x86 Attributes
	`target("cx16")`, x86	x86 Attributes
	`target("default")`, x86	x86 Attributes
	`target("div32")`, LoongArch	LoongArch Attributes
	`target("dlmzb")`, PowerPC	PowerPC Attributes
	`target("f16c")`, x86	x86 Attributes
	`target("fancy-math-387")`, x86	x86 Attributes
	`target("fix-cortex-a53-835769")`, AArch64	AArch64 Attributes
	`target("fma")`, x86	x86 Attributes
	`target("fma4")`, x86	x86 Attributes
	`target("fpmath=FPMATH")`, x86	x86 Attributes
	`target("fprnd")`, PowerPC	PowerPC Attributes
	`target("fpu=")`, ARM	ARM Attributes
	`target("friz")`, PowerPC	PowerPC Attributes
	`target("fsgsbase")`, x86	x86 Attributes
	`target("fxsr")`, x86	x86 Attributes
	`target("general-regs-only")`, AArch64	AArch64 Attributes
	`target("general-regs-only")`, x86	x86 Attributes
	`target("gfni")`, x86	x86 Attributes
	`target("hard-dfp")`, PowerPC	PowerPC Attributes
	`target("hle")`, x86	x86 Attributes
	`target("hreset")`, x86	x86 Attributes
	`target("ieee-fp")`, x86	x86 Attributes
	`target("indirect_return")`, AArch64	AArch64 Attributes
	`target("inline-all-stringops")`, x86	x86 Attributes
	`target("inline-stringops-dynamically")`, x86	x86 Attributes
	`target("isel")`, PowerPC	PowerPC Attributes
	`target("kl")`, x86	x86 Attributes
	`target("lam-bh")`, LoongArch	LoongArch Attributes
	`target("lamcas")`, LoongArch	LoongArch Attributes
	`target("lasx")`, LoongArch	LoongArch Attributes
	`target("ld-seq-sa")`, LoongArch	LoongArch Attributes
	`target("longcall")`, PowerPC	PowerPC Attributes
	`target("lsx")`, LoongArch	LoongArch Attributes
	`target("lwp")`, x86	x86 Attributes
	`target("lzcnt")`, x86	x86 Attributes
	`target("max-vectorization")`, AArch64	AArch64 Attributes
	`target("max-vectorization")`, RISC-V	RISC-V Attributes
	`target("mfcrf")`, PowerPC	PowerPC Attributes
	`target("mmx")`, x86	x86 Attributes
	`target("movbe")`, x86	x86 Attributes
	`target("movdir64b")`, x86	x86 Attributes
	`target("movdiri")`, x86	x86 Attributes
	`target("movrs")`, x86	x86 Attributes
	`target("mulhw")`, PowerPC	PowerPC Attributes
	`target("multiple")`, PowerPC	PowerPC Attributes
	`target("mwait")`, x86	x86 Attributes
	`target("mwaitx")`, x86	x86 Attributes
	`target("omit-leaf-frame-pointer")`, AArch64	AArch64 Attributes
	`target("outline-atomics")`, AArch64	AArch64 Attributes
	`target("paired")`, PowerPC	PowerPC Attributes
	`target("pclmul")`, x86	x86 Attributes
	`target("pconfig")`, x86	x86 Attributes
	`target("pku")`, x86	x86 Attributes
	`target("popcnt")`, x86	x86 Attributes
	`target("popcntb")`, PowerPC	PowerPC Attributes
	`target("popcntd")`, PowerPC	PowerPC Attributes
	`target("powerpc-gfxopt")`, PowerPC	PowerPC Attributes
	`target("powerpc-gpopt")`, PowerPC	PowerPC Attributes
	`target("prefetchi")`, x86	x86 Attributes
	`target("preserve_none")`, AArch64	AArch64 Attributes
	`target("prfchw")`, x86	x86 Attributes
	`target("ptwrite")`, x86	x86 Attributes
	`target("raoint")`, x86	x86 Attributes
	`target("rdpid")`, x86	x86 Attributes
	`target("rdrnd")`, x86	x86 Attributes
	`target("rdseed")`, x86	x86 Attributes
	`target("recip-precision")`, PowerPC	PowerPC Attributes
	`target("recip")`, x86	x86 Attributes
	`target("recipe")`, LoongArch	LoongArch Attributes
	`target("rtm")`, x86	x86 Attributes
	`target("sahf")`, x86	x86 Attributes
	`target("scq")`, LoongArch	LoongArch Attributes
	`target("sgx")`, x86	x86 Attributes
	`target("sha")`, x86	x86 Attributes
	`target("sha512")`, x86	x86 Attributes
	`target("shstk")`, x86	x86 Attributes
	`target("sign-return-address")`, AArch64	AArch64 Attributes
	`target("sm3")`, x86	x86 Attributes
	`target("sm4")`, x86	x86 Attributes
	`target("sse")`, x86	x86 Attributes
	`target("sse2")`, x86	x86 Attributes
	`target("sse3")`, x86	x86 Attributes
	`target("sse4.1")`, x86	x86 Attributes
	`target("sse4.2")`, x86	x86 Attributes
	`target("sse4")`, x86	x86 Attributes
	`target("sse4a")`, x86	x86 Attributes
	`target("ssse3")`, x86	x86 Attributes
	`target("strict-align")`, AArch64	AArch64 Attributes
	`target("strict-align")`, LoongArch	LoongArch Attributes
	`target("string")`, PowerPC	PowerPC Attributes
	`target("tbm")`, x86	x86 Attributes
	`target("thumb")`, ARM	ARM Attributes
	`target("tls-dialect=")`, AArch64	AArch64 Attributes
	`target("tune=")`, AArch64	AArch64 Attributes
	`target("tune=")`, LoongArch	LoongArch Attributes
	`target("tune=")`, RISC-V	RISC-V Attributes
	`target("tune=TUNE")`, PowerPC	PowerPC Attributes
	`target("tune=TUNE")`, x86	x86 Attributes
	`target("uintr")`, x86	x86 Attributes
	`target("update")`, PowerPC	PowerPC Attributes
	`target("usermsr")`, x86	x86 Attributes
	`target("vaes")`, x86	x86 Attributes
	`target("vpclmulqdq")`, x86	x86 Attributes
	`target("vsx")`, PowerPC	PowerPC Attributes
	`target("waitpkg")`, x86	x86 Attributes
	`target("wbnoinvd")`, x86	x86 Attributes
	`target("widekl")`, x86	x86 Attributes
	`target("xop")`, x86	x86 Attributes
	`target("xsave")`, x86	x86 Attributes
	`target("xsavec")`, x86	x86 Attributes
	`target("xsaveopt")`, x86	x86 Attributes
	`target("xsaves")`, x86	x86 Attributes
	`tda`, V850	V850 Attributes
	`thiscall`, x86-32	x86 Attributes
	`tiny_data`, H8/300	H8/300 Attributes
	`tls_model`	Common Attributes
	`transparent_union`	Common Attributes
	`trap_exit`, SH	SH Attributes
	`trapa_handler`, SH	SH Attributes

U
	`unavailable`	Common Attributes
	`uncached`, ARC	ARC Attributes
	`uninitialized`	Common Attributes
	`unsequenced`	Common Attributes
	`unused`	Common Attributes
	`upper`, MSP430	MSP430 Attributes
	`use_debug_exception_return`, MIPS	MIPS Attributes
	`use_hazard_barrier_return`, MIPS	MIPS Attributes
	`use_shadow_register_set`, MIPS	MIPS Attributes
	`used`	Common Attributes

V
	`vector_size`	Common Attributes
	`vector`, RX	RX Attributes
	`version_id`, IA-64	IA-64 Attributes
	`visibility`	Common Attributes

W
	`wakeup`, MSP430	MSP430 Attributes
	`warm`, NDS32	NDS32 Attributes
	`warn_unused`	C++ Attributes
	`warn_unused_result`	Common Attributes
	`warning`	Common Attributes
	`weak`	Common Attributes
	`weakref`	Common Attributes

Z
	`zda`, V850	V850 Attributes
	`zero_call_used_regs`	Common Attributes