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compiler_attributes.h: drop __has_attribute() support for gcc4

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Now that GCC 5.1 is the minimally supported default, the manual
workaround for older gcc versions not having __has_attribute() are no
longer relevant and can be removed.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds 2021-09-13 10:20:01 -07:00
parent 6f20fa2dfa
commit 6d2ef226f2
1 changed files with 0 additions and 20 deletions
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20
include/linux/compiler_attributes.h
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@ -20,26 +20,6 @@
* Provide links to the documentation of each supported compiler, if it exists.
*/
/*
* __has_attribute is supported on gcc >= 5, clang >= 2.9 and icc >= 17.
* In the meantime, to support gcc < 5, we implement __has_attribute
* by hand.
*/
#ifndef __has_attribute
# define __has_attribute(x) __GCC4_has_attribute_##x
# define __GCC4_has_attribute___assume_aligned__ 1
# define __GCC4_has_attribute___copy__ 0
# define __GCC4_has_attribute___designated_init__ 0
# define __GCC4_has_attribute___externally_visible__ 1
# define __GCC4_has_attribute___no_caller_saved_registers__ 0
# define __GCC4_has_attribute___noclone__ 1
# define __GCC4_has_attribute___no_profile_instrument_function__ 0
# define __GCC4_has_attribute___nonstring__ 0
# define __GCC4_has_attribute___no_sanitize_address__ 1
# define __GCC4_has_attribute___no_sanitize_undefined__ 1
# define __GCC4_has_attribute___fallthrough__ 0
#endif
/*
* gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-alias-function-attribute
*/