mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-23 03:10:05 +00:00
Remove pre GCC3.2 optimizations from string/bits/string2.h.
* string/string.h: Use __GNUC_PREREQ(3,4) for bits/string2.h.
* string/bits/string2.h (__STRING2_SMALL_GET16): Remove.
(__STRING2_SMALL_GET32): Remove.
(memset): Remove.
(__memset_1): Remove.
(__memset_gc): Remove.
(__mempcpy): Remove.
(mempcpy): Remove.
(__mempcpy_args): Remove.
(strchr): Remove.
(strcpy): Remove.
(strcpy_args): Remove.
(__stpcpy_args): Remove.
(__strcmp_cc): Remove.
(__strcmp_gc): Remove.
(strstr): Remove.
This commit is contained in:
Wilco Dijkstra
parent
df1cf48777
commit
155bc2a502
19
ChangeLog
19
ChangeLog
@ -1,3 +1,22 @@
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2016-04-15 Wilco Dijkstra <wdijkstr@arm.com>
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* string/string.h: Use __GNUC_PREREQ(3,4) for bits/string2.h.
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* string/bits/string2.h (__STRING2_SMALL_GET16): Remove.
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(__STRING2_SMALL_GET32): Remove.
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(memset): Remove.
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(__memset_1): Remove.
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(__memset_gc): Remove.
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(__mempcpy): Remove.
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(mempcpy): Remove.
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(__mempcpy_args): Remove.
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(strchr): Remove.
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(strcpy): Remove.
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(strcpy_args): Remove.
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(__stpcpy_args): Remove.
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(__strcmp_cc): Remove.
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(__strcmp_gc): Remove.
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(strstr): Remove.
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2016-04-15 Yvan Roux <yvan.roux@linaro.org>
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* stdlib/setenv.c (unsetenv): Fix ambiguous 'else'.
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@ -47,29 +47,7 @@
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#endif
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#if _STRING_INLINE_unaligned
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/* If we can do unaligned memory accesses we must know the endianess. */
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# include <endian.h>
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# include <bits/types.h>
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# if __BYTE_ORDER == __LITTLE_ENDIAN
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# define __STRING2_SMALL_GET16(src, idx) \
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(((const unsigned char *) (const char *) (src))[idx + 1] << 8 \
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| ((const unsigned char *) (const char *) (src))[idx])
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# define __STRING2_SMALL_GET32(src, idx) \
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(((((const unsigned char *) (const char *) (src))[idx + 3] << 8 \
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| ((const unsigned char *) (const char *) (src))[idx + 2]) << 8 \
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| ((const unsigned char *) (const char *) (src))[idx + 1]) << 8 \
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| ((const unsigned char *) (const char *) (src))[idx])
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# else
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# define __STRING2_SMALL_GET16(src, idx) \
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(((const unsigned char *) (const char *) (src))[idx] << 8 \
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| ((const unsigned char *) (const char *) (src))[idx + 1])
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# define __STRING2_SMALL_GET32(src, idx) \
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(((((const unsigned char *) (const char *) (src))[idx] << 8 \
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| ((const unsigned char *) (const char *) (src))[idx + 1]) << 8 \
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| ((const unsigned char *) (const char *) (src))[idx + 2]) << 8 \
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| ((const unsigned char *) (const char *) (src))[idx + 3])
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# endif
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#else
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/* These are a few types we need for the optimizations if we cannot
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use unaligned memory accesses. */
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@ -94,148 +72,11 @@ __STRING2_COPY_TYPE (8);
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/* Set N bytes of S to C. */
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#if !defined _HAVE_STRING_ARCH_memset
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# if !__GNUC_PREREQ (3, 0)
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# if _STRING_INLINE_unaligned
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# define memset(s, c, n) \
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(__extension__ (__builtin_constant_p (n) && (n) <= 16 \
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? ((n) == 1 \
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? __memset_1 (s, c) \
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: __memset_gc (s, c, n)) \
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: (__builtin_constant_p (c) && (c) == '\0' \
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? ({ void *__s = (s); __bzero (__s, n); __s; }) \
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: memset (s, c, n))))
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# define __memset_1(s, c) ({ void *__s = (s); \
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*((__uint8_t *) __s) = (__uint8_t) c; __s; })
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# define __memset_gc(s, c, n) \
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({ void *__s = (s); \
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union { \
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unsigned int __ui; \
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unsigned short int __usi; \
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unsigned char __uc; \
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} *__u = __s; \
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__uint8_t __c = (__uint8_t) (c); \
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\
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/* This `switch' statement will be removed at compile-time. */ \
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switch ((unsigned int) (n)) \
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{ \
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case 15: \
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__u->__ui = __c * 0x01010101; \
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__u = __extension__ ((void *) __u + 4); \
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case 11: \
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__u->__ui = __c * 0x01010101; \
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__u = __extension__ ((void *) __u + 4); \
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case 7: \
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__u->__ui = __c * 0x01010101; \
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__u = __extension__ ((void *) __u + 4); \
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case 3: \
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__u->__usi = (unsigned short int) __c * 0x0101; \
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__u = __extension__ ((void *) __u + 2); \
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__u->__uc = (unsigned char) __c; \
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break; \
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\
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case 14: \
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__u->__ui = __c * 0x01010101; \
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__u = __extension__ ((void *) __u + 4); \
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case 10: \
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__u->__ui = __c * 0x01010101; \
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__u = __extension__ ((void *) __u + 4); \
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case 6: \
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__u->__ui = __c * 0x01010101; \
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__u = __extension__ ((void *) __u + 4); \
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case 2: \
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__u->__usi = (unsigned short int) __c * 0x0101; \
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break; \
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\
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case 13: \
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__u->__ui = __c * 0x01010101; \
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__u = __extension__ ((void *) __u + 4); \
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case 9: \
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__u->__ui = __c * 0x01010101; \
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__u = __extension__ ((void *) __u + 4); \
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case 5: \
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__u->__ui = __c * 0x01010101; \
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__u = __extension__ ((void *) __u + 4); \
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case 1: \
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__u->__uc = (unsigned char) __c; \
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break; \
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\
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case 16: \
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__u->__ui = __c * 0x01010101; \
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__u = __extension__ ((void *) __u + 4); \
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case 12: \
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__u->__ui = __c * 0x01010101; \
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__u = __extension__ ((void *) __u + 4); \
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case 8: \
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__u->__ui = __c * 0x01010101; \
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__u = __extension__ ((void *) __u + 4); \
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case 4: \
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__u->__ui = __c * 0x01010101; \
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case 0: \
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break; \
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} \
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\
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__s; })
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# else
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# define memset(s, c, n) \
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(__extension__ (__builtin_constant_p (c) && (c) == '\0' \
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? ({ void *__s = (s); __bzero (__s, n); __s; }) \
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: memset (s, c, n)))
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# endif
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# endif
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/* GCC < 3.0 optimizes memset(s, 0, n) but not bzero(s, n).
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The optimization is broken before EGCS 1.1.
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GCC 3.0+ has __builtin_bzero as well, but at least till GCC 3.4
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if it decides to call the library function, it calls memset
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and not bzero. */
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# if __GNUC_PREREQ (2, 91)
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# define __bzero(s, n) __builtin_memset (s, '\0', n)
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# endif
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# define __bzero(s, n) __builtin_memset (s, '\0', n)
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#endif
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/* Copy N bytes from SRC to DEST, returning pointer to byte following the
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last copied. */
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#ifdef __USE_GNU
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# if !defined _HAVE_STRING_ARCH_mempcpy || defined _FORCE_INLINES
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# ifndef _HAVE_STRING_ARCH_mempcpy
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# if __GNUC_PREREQ (3, 4)
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# define __mempcpy(dest, src, n) __builtin_mempcpy (dest, src, n)
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# elif __GNUC_PREREQ (3, 0)
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# define __mempcpy(dest, src, n) \
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(__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n) \
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&& __string2_1bptr_p (src) && n <= 8 \
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? __builtin_memcpy (dest, src, n) + (n) \
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: __mempcpy (dest, src, n)))
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# else
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# define __mempcpy(dest, src, n) \
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(__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n) \
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&& __string2_1bptr_p (src) && n <= 8 \
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? __mempcpy_small (dest, __mempcpy_args (src), n) \
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: __mempcpy (dest, src, n)))
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# endif
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/* In glibc we use this function frequently but for namespace reasons
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we have to use the name `__mempcpy'. */
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# define mempcpy(dest, src, n) __mempcpy (dest, src, n)
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# endif
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# if !__GNUC_PREREQ (3, 0) || defined _FORCE_INLINES
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# if _STRING_INLINE_unaligned
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# ifndef _FORCE_INLINES
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# define __mempcpy_args(src) \
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((const char *) (src))[0], ((const char *) (src))[2], \
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((const char *) (src))[4], ((const char *) (src))[6], \
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__extension__ __STRING2_SMALL_GET16 (src, 0), \
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__extension__ __STRING2_SMALL_GET16 (src, 4), \
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__extension__ __STRING2_SMALL_GET32 (src, 0), \
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__extension__ __STRING2_SMALL_GET32 (src, 4)
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# endif
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__STRING_INLINE void *__mempcpy_small (void *, char, char, char, char,
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__uint16_t, __uint16_t, __uint32_t,
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__uint32_t, size_t);
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# if defined _FORCE_INLINES
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# if _STRING_INLINE_unaligned
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__STRING_INLINE void *
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__mempcpy_small (void *__dest1,
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char __src0_1, char __src2_1, char __src4_1, char __src6_1,
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@ -298,44 +139,7 @@ __mempcpy_small (void *__dest1,
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}
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return (void *) __u;
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}
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# else
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# ifndef _FORCE_INLINES
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# define __mempcpy_args(src) \
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((const char *) (src))[0], \
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__extension__ ((__STRING2_COPY_ARR2) \
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{ { ((const char *) (src))[0], ((const char *) (src))[1] } }), \
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__extension__ ((__STRING2_COPY_ARR3) \
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{ { ((const char *) (src))[0], ((const char *) (src))[1], \
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((const char *) (src))[2] } }), \
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__extension__ ((__STRING2_COPY_ARR4) \
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{ { ((const char *) (src))[0], ((const char *) (src))[1], \
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((const char *) (src))[2], ((const char *) (src))[3] } }), \
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__extension__ ((__STRING2_COPY_ARR5) \
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{ { ((const char *) (src))[0], ((const char *) (src))[1], \
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((const char *) (src))[2], ((const char *) (src))[3], \
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((const char *) (src))[4] } }), \
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__extension__ ((__STRING2_COPY_ARR6) \
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{ { ((const char *) (src))[0], ((const char *) (src))[1], \
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((const char *) (src))[2], ((const char *) (src))[3], \
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((const char *) (src))[4], ((const char *) (src))[5] } }), \
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__extension__ ((__STRING2_COPY_ARR7) \
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{ { ((const char *) (src))[0], ((const char *) (src))[1], \
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((const char *) (src))[2], ((const char *) (src))[3], \
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((const char *) (src))[4], ((const char *) (src))[5], \
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((const char *) (src))[6] } }), \
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__extension__ ((__STRING2_COPY_ARR8) \
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{ { ((const char *) (src))[0], ((const char *) (src))[1], \
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((const char *) (src))[2], ((const char *) (src))[3], \
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((const char *) (src))[4], ((const char *) (src))[5], \
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((const char *) (src))[6], ((const char *) (src))[7] } })
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# endif
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__STRING_INLINE void *__mempcpy_small (void *, char, __STRING2_COPY_ARR2,
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__STRING2_COPY_ARR3,
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__STRING2_COPY_ARR4,
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__STRING2_COPY_ARR5,
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__STRING2_COPY_ARR6,
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__STRING2_COPY_ARR7,
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__STRING2_COPY_ARR8, size_t);
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# else
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__STRING_INLINE void *
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__mempcpy_small (void *__dest, char __src1,
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__STRING2_COPY_ARR2 __src2, __STRING2_COPY_ARR3 __src3,
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@ -382,8 +186,6 @@ __mempcpy_small (void *__dest, char __src1,
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}
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return __extension__ ((void *) __u + __srclen);
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}
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# endif
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# endif
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# endif
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#endif
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@ -391,44 +193,17 @@ __mempcpy_small (void *__dest, char __src1,
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/* Return pointer to C in S. */
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#ifndef _HAVE_STRING_ARCH_strchr
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extern void *__rawmemchr (const void *__s, int __c);
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# if __GNUC_PREREQ (3, 2)
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# define strchr(s, c) \
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(__extension__ (__builtin_constant_p (c) && !__builtin_constant_p (s) \
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&& (c) == '\0' \
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? (char *) __rawmemchr (s, c) \
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: __builtin_strchr (s, c)))
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# else
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# define strchr(s, c) \
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(__extension__ (__builtin_constant_p (c) && (c) == '\0' \
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? (char *) __rawmemchr (s, c) \
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: strchr (s, c)))
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# endif
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#endif
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/* Copy SRC to DEST. */
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#if (!defined _HAVE_STRING_ARCH_strcpy && !__GNUC_PREREQ (3, 0)) \
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|| defined _FORCE_INLINES
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# if !defined _HAVE_STRING_ARCH_strcpy && !__GNUC_PREREQ (3, 0)
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# define strcpy(dest, src) \
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(__extension__ (__builtin_constant_p (src) \
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? (__string2_1bptr_p (src) && strlen (src) + 1 <= 8 \
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? __strcpy_small (dest, __strcpy_args (src), \
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strlen (src) + 1) \
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: (char *) memcpy (dest, src, strlen (src) + 1)) \
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: strcpy (dest, src)))
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# endif
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#if defined _FORCE_INLINES
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# if _STRING_INLINE_unaligned
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# ifndef _FORCE_INLINES
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# define __strcpy_args(src) \
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__extension__ __STRING2_SMALL_GET16 (src, 0), \
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__extension__ __STRING2_SMALL_GET16 (src, 4), \
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__extension__ __STRING2_SMALL_GET32 (src, 0), \
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__extension__ __STRING2_SMALL_GET32 (src, 4)
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# endif
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__STRING_INLINE char *__strcpy_small (char *, __uint16_t, __uint16_t,
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__uint32_t, __uint32_t, size_t);
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__STRING_INLINE char *
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__strcpy_small (char *__dest,
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__uint16_t __src0_2, __uint16_t __src4_2,
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@ -482,42 +257,6 @@ __strcpy_small (char *__dest,
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return __dest;
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}
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# else
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# ifndef _FORCE_INLINES
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# define __strcpy_args(src) \
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__extension__ ((__STRING2_COPY_ARR2) \
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{ { ((const char *) (src))[0], '\0' } }), \
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__extension__ ((__STRING2_COPY_ARR3) \
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{ { ((const char *) (src))[0], ((const char *) (src))[1], \
|
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'\0' } }), \
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__extension__ ((__STRING2_COPY_ARR4) \
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{ { ((const char *) (src))[0], ((const char *) (src))[1], \
|
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((const char *) (src))[2], '\0' } }), \
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__extension__ ((__STRING2_COPY_ARR5) \
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{ { ((const char *) (src))[0], ((const char *) (src))[1], \
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((const char *) (src))[2], ((const char *) (src))[3], \
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'\0' } }), \
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__extension__ ((__STRING2_COPY_ARR6) \
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{ { ((const char *) (src))[0], ((const char *) (src))[1], \
|
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((const char *) (src))[2], ((const char *) (src))[3], \
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((const char *) (src))[4], '\0' } }), \
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__extension__ ((__STRING2_COPY_ARR7) \
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{ { ((const char *) (src))[0], ((const char *) (src))[1], \
|
||||
((const char *) (src))[2], ((const char *) (src))[3], \
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((const char *) (src))[4], ((const char *) (src))[5], \
|
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'\0' } }), \
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__extension__ ((__STRING2_COPY_ARR8) \
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{ { ((const char *) (src))[0], ((const char *) (src))[1], \
|
||||
((const char *) (src))[2], ((const char *) (src))[3], \
|
||||
((const char *) (src))[4], ((const char *) (src))[5], \
|
||||
((const char *) (src))[6], '\0' } })
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||||
# endif
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||||
__STRING_INLINE char *__strcpy_small (char *, __STRING2_COPY_ARR2,
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__STRING2_COPY_ARR3,
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__STRING2_COPY_ARR4,
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__STRING2_COPY_ARR5,
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__STRING2_COPY_ARR6,
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||||
__STRING2_COPY_ARR7,
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||||
__STRING2_COPY_ARR8, size_t);
|
||||
__STRING_INLINE char *
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||||
__strcpy_small (char *__dest,
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__STRING2_COPY_ARR2 __src2, __STRING2_COPY_ARR3 __src3,
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@ -570,44 +309,15 @@ __strcpy_small (char *__dest,
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||||
/* Copy SRC to DEST, returning pointer to final NUL byte. */
|
||||
#ifdef __USE_GNU
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||||
# if !defined _HAVE_STRING_ARCH_stpcpy || defined _FORCE_INLINES
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||||
# ifndef _HAVE_STRING_ARCH_stpcpy
|
||||
# if __GNUC_PREREQ (3, 4)
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# define __stpcpy(dest, src) __builtin_stpcpy (dest, src)
|
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# elif __GNUC_PREREQ (3, 0)
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||||
# define __stpcpy(dest, src) \
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(__extension__ (__builtin_constant_p (src) \
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? (__string2_1bptr_p (src) && strlen (src) + 1 <= 8 \
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||||
? __builtin_strcpy (dest, src) + strlen (src) \
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: ((char *) (__mempcpy) (dest, src, strlen (src) + 1) \
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- 1)) \
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: __stpcpy (dest, src)))
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# else
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# define __stpcpy(dest, src) \
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(__extension__ (__builtin_constant_p (src) \
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||||
? (__string2_1bptr_p (src) && strlen (src) + 1 <= 8 \
|
||||
? __stpcpy_small (dest, __stpcpy_args (src), \
|
||||
strlen (src) + 1) \
|
||||
: ((char *) (__mempcpy) (dest, src, strlen (src) + 1) \
|
||||
- 1)) \
|
||||
: __stpcpy (dest, src)))
|
||||
# endif
|
||||
# ifndef _HAVE_STRING_ARCH_stpcpy
|
||||
# define __stpcpy(dest, src) __builtin_stpcpy (dest, src)
|
||||
/* In glibc we use this function frequently but for namespace reasons
|
||||
we have to use the name `__stpcpy'. */
|
||||
# define stpcpy(dest, src) __stpcpy (dest, src)
|
||||
# endif
|
||||
# define stpcpy(dest, src) __stpcpy (dest, src)
|
||||
# endif
|
||||
|
||||
# if !__GNUC_PREREQ (3, 0) || defined _FORCE_INLINES
|
||||
# if _STRING_INLINE_unaligned
|
||||
# ifndef _FORCE_INLINES
|
||||
# define __stpcpy_args(src) \
|
||||
__extension__ __STRING2_SMALL_GET16 (src, 0), \
|
||||
__extension__ __STRING2_SMALL_GET16 (src, 4), \
|
||||
__extension__ __STRING2_SMALL_GET32 (src, 0), \
|
||||
__extension__ __STRING2_SMALL_GET32 (src, 4)
|
||||
# endif
|
||||
__STRING_INLINE char *__stpcpy_small (char *, __uint16_t, __uint16_t,
|
||||
__uint32_t, __uint32_t, size_t);
|
||||
# if defined _FORCE_INLINES
|
||||
# if _STRING_INLINE_unaligned
|
||||
__STRING_INLINE char *
|
||||
__stpcpy_small (char *__dest,
|
||||
__uint16_t __src0_2, __uint16_t __src4_2,
|
||||
@ -665,43 +375,7 @@ __stpcpy_small (char *__dest,
|
||||
}
|
||||
return &__u->__c;
|
||||
}
|
||||
# else
|
||||
# ifndef _FORCE_INLINES
|
||||
# define __stpcpy_args(src) \
|
||||
__extension__ ((__STRING2_COPY_ARR2) \
|
||||
{ { ((const char *) (src))[0], '\0' } }), \
|
||||
__extension__ ((__STRING2_COPY_ARR3) \
|
||||
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
|
||||
'\0' } }), \
|
||||
__extension__ ((__STRING2_COPY_ARR4) \
|
||||
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
|
||||
((const char *) (src))[2], '\0' } }), \
|
||||
__extension__ ((__STRING2_COPY_ARR5) \
|
||||
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
|
||||
((const char *) (src))[2], ((const char *) (src))[3], \
|
||||
'\0' } }), \
|
||||
__extension__ ((__STRING2_COPY_ARR6) \
|
||||
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
|
||||
((const char *) (src))[2], ((const char *) (src))[3], \
|
||||
((const char *) (src))[4], '\0' } }), \
|
||||
__extension__ ((__STRING2_COPY_ARR7) \
|
||||
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
|
||||
((const char *) (src))[2], ((const char *) (src))[3], \
|
||||
((const char *) (src))[4], ((const char *) (src))[5], \
|
||||
'\0' } }), \
|
||||
__extension__ ((__STRING2_COPY_ARR8) \
|
||||
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
|
||||
((const char *) (src))[2], ((const char *) (src))[3], \
|
||||
((const char *) (src))[4], ((const char *) (src))[5], \
|
||||
((const char *) (src))[6], '\0' } })
|
||||
# endif
|
||||
__STRING_INLINE char *__stpcpy_small (char *, __STRING2_COPY_ARR2,
|
||||
__STRING2_COPY_ARR3,
|
||||
__STRING2_COPY_ARR4,
|
||||
__STRING2_COPY_ARR5,
|
||||
__STRING2_COPY_ARR6,
|
||||
__STRING2_COPY_ARR7,
|
||||
__STRING2_COPY_ARR8, size_t);
|
||||
# else
|
||||
__STRING_INLINE char *
|
||||
__stpcpy_small (char *__dest,
|
||||
__STRING2_COPY_ARR2 __src2, __STRING2_COPY_ARR3 __src3,
|
||||
@ -748,7 +422,6 @@ __stpcpy_small (char *__dest,
|
||||
}
|
||||
return __dest + __srclen - 1;
|
||||
}
|
||||
# endif
|
||||
# endif
|
||||
# endif
|
||||
#endif
|
||||
@ -756,16 +429,7 @@ __stpcpy_small (char *__dest,
|
||||
|
||||
/* Copy no more than N characters of SRC to DEST. */
|
||||
#ifndef _HAVE_STRING_ARCH_strncpy
|
||||
# if __GNUC_PREREQ (3, 2)
|
||||
# define strncpy(dest, src, n) __builtin_strncpy (dest, src, n)
|
||||
# else
|
||||
# define strncpy(dest, src, n) \
|
||||
(__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n) \
|
||||
? (strlen (src) + 1 >= ((size_t) (n)) \
|
||||
? (char *) memcpy (dest, src, n) \
|
||||
: strncpy (dest, src, n)) \
|
||||
: strncpy (dest, src, n)))
|
||||
# endif
|
||||
# define strncpy(dest, src, n) __builtin_strncpy (dest, src, n)
|
||||
#endif
|
||||
|
||||
|
||||
@ -780,23 +444,15 @@ __stpcpy_small (char *__dest,
|
||||
: (*((char *) __mempcpy (strchr (__dest, '\0'), \
|
||||
src, n)) = '\0', __dest)) \
|
||||
: strncat (dest, src, n); }))
|
||||
# elif __GNUC_PREREQ (3, 2)
|
||||
# define strncat(dest, src, n) __builtin_strncat (dest, src, n)
|
||||
# else
|
||||
# define strncat(dest, src, n) \
|
||||
(__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n) \
|
||||
? (strlen (src) < ((size_t) (n)) \
|
||||
? strcat (dest, src) \
|
||||
: strncat (dest, src, n)) \
|
||||
: strncat (dest, src, n)))
|
||||
# define strncat(dest, src, n) __builtin_strncat (dest, src, n)
|
||||
# endif
|
||||
#endif
|
||||
|
||||
|
||||
/* Compare characters of S1 and S2. */
|
||||
#ifndef _HAVE_STRING_ARCH_strcmp
|
||||
# if __GNUC_PREREQ (3, 2)
|
||||
# define strcmp(s1, s2) \
|
||||
# define strcmp(s1, s2) \
|
||||
__extension__ \
|
||||
({ size_t __s1_len, __s2_len; \
|
||||
(__builtin_constant_p (s1) && __builtin_constant_p (s2) \
|
||||
@ -813,57 +469,8 @@ __stpcpy_small (char *__dest,
|
||||
&& (__s2_len = strlen (s2), __s2_len < 4) \
|
||||
? (__builtin_constant_p (s1) && __string2_1bptr_p (s1) \
|
||||
? __builtin_strcmp (s1, s2) \
|
||||
: __strcmp_gc (s1, s2, __s2_len)) \
|
||||
: __builtin_strcmp (s1, s2)))); })
|
||||
# else
|
||||
# define strcmp(s1, s2) \
|
||||
__extension__ \
|
||||
({ size_t __s1_len, __s2_len; \
|
||||
(__builtin_constant_p (s1) && __builtin_constant_p (s2) \
|
||||
&& (__s1_len = strlen (s1), __s2_len = strlen (s2), \
|
||||
(!__string2_1bptr_p (s1) || __s1_len >= 4) \
|
||||
&& (!__string2_1bptr_p (s2) || __s2_len >= 4)) \
|
||||
? memcmp ((const char *) (s1), (const char *) (s2), \
|
||||
(__s1_len < __s2_len ? __s1_len : __s2_len) + 1) \
|
||||
: (__builtin_constant_p (s1) && __string2_1bptr_p (s1) \
|
||||
&& (__s1_len = strlen (s1), __s1_len < 4) \
|
||||
? (__builtin_constant_p (s2) && __string2_1bptr_p (s2) \
|
||||
? __strcmp_cc (s1, s2, __s1_len) \
|
||||
: __strcmp_cg (s1, s2, __s1_len)) \
|
||||
: (__builtin_constant_p (s2) && __string2_1bptr_p (s2) \
|
||||
&& (__s2_len = strlen (s2), __s2_len < 4) \
|
||||
? (__builtin_constant_p (s1) && __string2_1bptr_p (s1) \
|
||||
? __strcmp_cc (s1, s2, __s2_len) \
|
||||
: __strcmp_gc (s1, s2, __s2_len)) \
|
||||
: strcmp (s1, s2)))); })
|
||||
# endif
|
||||
|
||||
# define __strcmp_cc(s1, s2, l) \
|
||||
(__extension__ ({ int __result = \
|
||||
(((const unsigned char *) (const char *) (s1))[0] \
|
||||
- ((const unsigned char *) (const char *)(s2))[0]); \
|
||||
if (l > 0 && __result == 0) \
|
||||
{ \
|
||||
__result = (((const unsigned char *) \
|
||||
(const char *) (s1))[1] \
|
||||
- ((const unsigned char *) \
|
||||
(const char *) (s2))[1]); \
|
||||
if (l > 1 && __result == 0) \
|
||||
{ \
|
||||
__result = \
|
||||
(((const unsigned char *) \
|
||||
(const char *) (s1))[2] \
|
||||
- ((const unsigned char *) \
|
||||
(const char *) (s2))[2]); \
|
||||
if (l > 2 && __result == 0) \
|
||||
__result = \
|
||||
(((const unsigned char *) \
|
||||
(const char *) (s1))[3] \
|
||||
- ((const unsigned char *) \
|
||||
(const char *) (s2))[3]); \
|
||||
} \
|
||||
} \
|
||||
__result; }))
|
||||
: -__strcmp_cg (s2, s1, __s2_len)) \
|
||||
: __builtin_strcmp (s1, s2)))); })
|
||||
|
||||
# define __strcmp_cg(s1, s2, l1) \
|
||||
(__extension__ ({ const unsigned char *__s2 = \
|
||||
@ -886,8 +493,6 @@ __stpcpy_small (char *__dest,
|
||||
} \
|
||||
} \
|
||||
__result; }))
|
||||
|
||||
# define __strcmp_gc(s1, s2, l2) (- __strcmp_cg (s2, s1, l2))
|
||||
#endif
|
||||
|
||||
|
||||
@ -906,41 +511,20 @@ __stpcpy_small (char *__dest,
|
||||
/* Return the length of the initial segment of S which
|
||||
consists entirely of characters not in REJECT. */
|
||||
#ifndef _HAVE_STRING_ARCH_strcspn
|
||||
# if __GNUC_PREREQ (3, 2)
|
||||
# define strcspn(s, reject) __builtin_strcspn (s, reject)
|
||||
# endif
|
||||
# define strcspn(s, reject) __builtin_strcspn (s, reject)
|
||||
#endif
|
||||
|
||||
|
||||
/* Return the length of the initial segment of S which
|
||||
consists entirely of characters in ACCEPT. */
|
||||
#ifndef _HAVE_STRING_ARCH_strspn
|
||||
# if __GNUC_PREREQ (3, 2)
|
||||
# define strspn(s, accept) __builtin_strspn (s, accept)
|
||||
# endif
|
||||
# define strspn(s, accept) __builtin_strspn (s, accept)
|
||||
#endif
|
||||
|
||||
|
||||
/* Find the first occurrence in S of any character in ACCEPT. */
|
||||
#ifndef _HAVE_STRING_ARCH_strpbrk
|
||||
# if __GNUC_PREREQ (3, 2)
|
||||
# define strpbrk(s, accept) __builtin_strpbrk (s, accept)
|
||||
# endif
|
||||
#endif
|
||||
|
||||
|
||||
/* Find the first occurrence of NEEDLE in HAYSTACK. Newer gcc versions
|
||||
do this itself. */
|
||||
#if !defined _HAVE_STRING_ARCH_strstr && !__GNUC_PREREQ (2, 97)
|
||||
# define strstr(haystack, needle) \
|
||||
(__extension__ (__builtin_constant_p (needle) && __string2_1bptr_p (needle) \
|
||||
? (((const char *) (needle))[0] == '\0' \
|
||||
? (char *) (size_t) (haystack) \
|
||||
: (((const char *) (needle))[1] == '\0' \
|
||||
? strchr (haystack, \
|
||||
((const char *) (needle))[0]) \
|
||||
: strstr (haystack, needle))) \
|
||||
: strstr (haystack, needle)))
|
||||
# define strpbrk(s, accept) __builtin_strpbrk (s, accept)
|
||||
#endif
|
||||
|
||||
|
||||
|
||||
@ -602,7 +602,7 @@ extern char *basename (const char *__filename) __THROW __nonnull ((1));
|
||||
#endif
|
||||
|
||||
|
||||
#if defined __GNUC__ && __GNUC__ >= 2
|
||||
#if __GNUC_PREREQ (3,4)
|
||||
# if defined __OPTIMIZE__ && !defined __OPTIMIZE_SIZE__ \
|
||||
&& !defined __NO_INLINE__ && !defined __cplusplus
|
||||
/* When using GNU CC we provide some optimized versions of selected
|
||||
@ -640,8 +640,6 @@ extern char *basename (const char *__filename) __THROW __nonnull ((1));
|
||||
&& defined __extern_always_inline && __GNUC_PREREQ (3,2)
|
||||
# if !defined _FORCE_INLINES && !defined _HAVE_STRING_ARCH_mempcpy
|
||||
|
||||
#undef mempcpy
|
||||
#undef __mempcpy
|
||||
#define mempcpy(dest, src, n) __mempcpy_inline (dest, src, n)
|
||||
#define __mempcpy(dest, src, n) __mempcpy_inline (dest, src, n)
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user