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compiler-gcc.h: Introduce __optimize function attribute 

Create a new function attribute __optimize, which allows to specify an
optimization level on a per-function basis.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
hifive-unleashed-5.1
Geert Uytterhoeven 2018-02-01 11:21:58 +01:00 committed by Herbert Xu
parent 4767b9ad7d
commit df5d45aa08
2 changed files with 8 additions and 0 deletions
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4
include/linux/compiler-gcc.h
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@ -196,6 +196,10 @@
#endif /* __CHECKER__ */
#endif /* GCC_VERSION >= 40300 */
#if GCC_VERSION >= 40400
#define __optimize(level) __attribute__((__optimize__(level)))
#endif /* GCC_VERSION >= 40400 */
#if GCC_VERSION >= 40500
#ifndef __CHECKER__

4
include/linux/compiler.h
View File

@ -271,6 +271,10 @@ static __always_inline void __write_once_size(volatile void *p, void *res, int s
#endif /* __ASSEMBLY__ */
#ifndef __optimize
# define __optimize(level)
#endif
/* Compile time object size, -1 for unknown */
#ifndef __compiletime_object_size
# define __compiletime_object_size(obj) -1