From e8c44319c691dfb4a0b039b095204c040df9b01a Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Thu, 18 Oct 2007 03:07:07 -0700 Subject: Replace __attribute_pure__ with __pure To be consistent with the use of attributes in the rest of the kernel replace all use of __attribute_pure__ with __pure and delete the definition of __attribute_pure__. Signed-off-by: Ralf Baechle Cc: Russell King Acked-by: Mauro Carvalho Chehab Cc: Bryan Wu Cc: Paul Mackerras Cc: Benjamin Herrenschmidt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/compiler-gcc.h | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'include/linux/compiler-gcc.h') diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h index acd583384bd9..fe23792f05c1 100644 --- a/include/linux/compiler-gcc.h +++ b/include/linux/compiler-gcc.h @@ -36,10 +36,20 @@ #define __weak __attribute__((weak)) #define __naked __attribute__((naked)) #define __noreturn __attribute__((noreturn)) + +/* + * From the GCC manual: + * + * Many functions have no effects except the return value and their + * return value depends only on the parameters and/or global + * variables. Such a function can be subject to common subexpression + * elimination and loop optimization just as an arithmetic operator + * would be. + * [...] + */ #define __pure __attribute__((pure)) #define __aligned(x) __attribute__((aligned(x))) #define __printf(a,b) __attribute__((format(printf,a,b))) #define noinline __attribute__((noinline)) -#define __attribute_pure__ __attribute__((pure)) #define __attribute_const__ __attribute__((__const__)) #define __maybe_unused __attribute__((unused)) -- cgit v1.2.3-59-g8ed1b