On Friday 13 February 2009 07:37:52 Bernhard Reutner-Fischer wrote:
> On Tue, Dec 16, 2008 at 05:36:32PM -0800, v...@uclibc.org wrote:
> >Author: vda
> >Date: 2008-12-16 17:36:31 -0800 (Tue, 16 Dec 2008)
> >New Revision: 24435
> >
> >Log:
> >since gcc -Os hates us and does not inline string ops,
>
> I don't remember offhand if we deliberately turned them off.
>
> >implement inline versions of some of them.
> >Enable only those which result roughly in the same
> >code size as using out-or-line versions.
> >
> >None of this affects users, installed headers won't have
> >any trace of it.
> >
> >+static __always_inline
> >+void *inlined_memchr_const_c(const void *s, int c, size_t count)
> >+{
> >+ void *edi;
> >+ int ecx, eax;
> >+ __asm__ __volatile__(
> >+ " jecxz 1f\n"
> >+ " movb %4, %%al\n" /* const c to %%al */
> >+ " repne; scasb\n"
> >+ " leal -1(%%edi), %%edi\n"
> >+ " je 2f\n"
> >+ "1:\n"
> >+ " xorl %%edi, %%edi\n"
> >+ "2:\n"
> >+ : "=&D" (edi), "=&c" (ecx), "=&a" (eax)
> >+ : "0" (s), "i" (c), "1" (count)
> >+ /* : no clobbers */
> >+ );
>
> Are you sure? Sounds like there is a bug somewhere for it works with any
> optimization level on gcc 4.4 as opposed to anything earlier:
>
> ./include/libc-string_i386.h: In function '__stdio_fwrite':
> ./include/libc-string_i386.h:293: warning: asm operand 4 probably doesn't
> match constraints
> ./include/libc-string_i386.h:293: error: impossible constraint in 'asm'and now i'm hitting this too. if a fix isnt coming soon, then i say we just disable it until it's actually usable. -mike
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