diff options
author | David S. Miller <davem@davemloft.net> | 2012-05-11 19:53:29 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2012-05-11 19:53:29 -0700 |
commit | b55e81b9f8cf0256bcfc548360aef642630c2919 (patch) | |
tree | 6a4374703f104ddc4cbc3b5f599fd52937000bc5 /arch/sparc/include/asm/string_32.h | |
parent | afaedde7c9bcbae4ea9ece34990da72da9c360af (diff) |
sparc32: Remove inline strncmp "optimization" for constant counts.
Let the compiler do stuff like this.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/include/asm/string_32.h')
-rw-r--r-- | arch/sparc/include/asm/string_32.h | 63 |
1 files changed, 1 insertions, 62 deletions
diff --git a/arch/sparc/include/asm/string_32.h b/arch/sparc/include/asm/string_32.h index edf196ee4ef..12f67857152 100644 --- a/arch/sparc/include/asm/string_32.h +++ b/arch/sparc/include/asm/string_32.h @@ -61,68 +61,7 @@ extern int memcmp(const void *,const void *,__kernel_size_t); extern __kernel_size_t strlen(const char *); #define __HAVE_ARCH_STRNCMP - -extern int __strncmp(const char *, const char *, __kernel_size_t); - -static inline int __constant_strncmp(const char *src, const char *dest, __kernel_size_t count) -{ - register int retval; - switch(count) { - case 0: return 0; - case 1: return (src[0] - dest[0]); - case 2: retval = (src[0] - dest[0]); - if(!retval && src[0]) - retval = (src[1] - dest[1]); - return retval; - case 3: retval = (src[0] - dest[0]); - if(!retval && src[0]) { - retval = (src[1] - dest[1]); - if(!retval && src[1]) - retval = (src[2] - dest[2]); - } - return retval; - case 4: retval = (src[0] - dest[0]); - if(!retval && src[0]) { - retval = (src[1] - dest[1]); - if(!retval && src[1]) { - retval = (src[2] - dest[2]); - if (!retval && src[2]) - retval = (src[3] - dest[3]); - } - } - return retval; - case 5: retval = (src[0] - dest[0]); - if(!retval && src[0]) { - retval = (src[1] - dest[1]); - if(!retval && src[1]) { - retval = (src[2] - dest[2]); - if (!retval && src[2]) { - retval = (src[3] - dest[3]); - if (!retval && src[3]) - retval = (src[4] - dest[4]); - } - } - } - return retval; - default: - retval = (src[0] - dest[0]); - if(!retval && src[0]) { - retval = (src[1] - dest[1]); - if(!retval && src[1]) { - retval = (src[2] - dest[2]); - if(!retval && src[2]) - retval = __strncmp(src+3,dest+3,count-3); - } - } - return retval; - } -} - -#undef strncmp -#define strncmp(__arg0, __arg1, __arg2) \ -(__builtin_constant_p(__arg2) ? \ - __constant_strncmp(__arg0, __arg1, __arg2) : \ - __strncmp(__arg0, __arg1, __arg2)) +extern int strncmp(const char *, const char *, __kernel_size_t); #endif /* !EXPORT_SYMTAB_STROPS */ |