Commit d991bb1c authored by Luc Van Oostenryck's avatar Luc Van Oostenryck Committed by Linus Torvalds
Browse files

include/linux/compiler-gcc.h: sparse can do constant folding of __builtin_bswap*() 

Sparse can do constant folding of __builtin_bswap*() since 2017.  Also, a
much recent version of Sparse is needed anyway, see commit 6ec4476a
("Raise gcc version requirement to 4.9").

So, remove the comment about sparse not being yet able to constant fold
__builtin_bswap*() and remove the corresponding test of __CHECKER__.

Link: https://lkml.kernel.org/r/20210226092236.99369-1-luc.vanoostenryck@gmail.com


Signed-off-by: default avatarLuc Van Oostenryck <luc.vanoostenryck@gmail.com>
Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
Acked-by: default avatarMiguel Ojeda <ojeda@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 99e729bd

include/linux/compiler-gcc.h

+2 −6
Original line number Diff line number Diff line
@@ -90,15 +90,11 @@ 
 */

#define asm_volatile_goto(x...)	do { asm goto(x); asm (""); } while (0)



/*

 * sparse (__CHECKER__) pretends to be gcc, but can't do constant

 * folding in __builtin_bswap*() (yet), so don't set these for it.

 */

#if defined(CONFIG_ARCH_USE_BUILTIN_BSWAP) && !defined(__CHECKER__)

#if defined(CONFIG_ARCH_USE_BUILTIN_BSWAP)

#define __HAVE_BUILTIN_BSWAP32__

#define __HAVE_BUILTIN_BSWAP64__

#define __HAVE_BUILTIN_BSWAP16__

#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP && !__CHECKER__ */

#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP */



#if GCC_VERSION >= 70000

#define KASAN_ABI_VERSION 5