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| author | Jeff Johnston <jjohnstn@redhat.com> | 2013-12-10 18:57:30 +0000 |
|---|---|---|
| committer | Jeff Johnston <jjohnstn@redhat.com> | 2013-12-10 18:57:30 +0000 |
| commit | 10e4d79a191f07999bc94b21535fba5d7c04f419 (patch) | |
| tree | dd9f0587036281f112a92162f6d39684c511c89b /newlib/libc/string/local.h | |
| parent | a6a307d8c2983656ac207bba6c59b44e13ad377d (diff) | |
| download | cygnal-10e4d79a191f07999bc94b21535fba5d7c04f419.tar.gz cygnal-10e4d79a191f07999bc94b21535fba5d7c04f419.tar.bz2 cygnal-10e4d79a191f07999bc94b21535fba5d7c04f419.zip | |
2013-12-10 Jeff Johnston <jjohnstn@redhat.com>
* acconfig.h: Add _HAVE_CC_INHIBIT_LOOP_TO_LIBCALL.
* newlib.hin: Ditto.
* configure: Regenerate.
* configure.in: Add setting of _HAVE_CC_INHIBIT_LOOP_TO_LIBCALL.
* libc/string/local.h: Add check for _HAVE_CC_INHIBIT_LOOP_TO_LIBCALL
and set __inhibit_loop_to_libcall macro appropriately.
* libc/string/memmove.c: Use __inhibit_loop_to_libcall macro in
function declaration.
* libc/string/memset.c: Ditto.
Diffstat (limited to 'newlib/libc/string/local.h')
| -rw-r--r-- | newlib/libc/string/local.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/newlib/libc/string/local.h b/newlib/libc/string/local.h index 5d17dccc4..dfe01d70b 100644 --- a/newlib/libc/string/local.h +++ b/newlib/libc/string/local.h @@ -7,3 +7,18 @@ int _EXFUN (__wcwidth, (wint_t)); /* Defined in locale/locale.c. Returns a value != 0 if the current language is assumed to use CJK fonts. */ int __locale_cjk_lang (); + +/* + Taken from glibc: + Add the compiler optimization to inhibit loop transformation to library + calls. This is used to avoid recursive calls in memset and memmove + default implementations. +*/ +#ifdef _HAVE_CC_INHIBIT_LOOP_TO_LIBCALL +# define __inhibit_loop_to_libcall \ + __attribute__ ((__optimize__ ("-fno-tree-loop-distribute-patterns"))) +#else +# define __inhibit_loop_to_libcall +#endif + + |