On Monday 20 July 2009 16:36:36 Denys Vlasenko wrote:
> On Monday 20 July 2009 14:22, Mike Frysinger wrote:
> > On Friday 13 February 2009 07:37:52 Bernhard Reutner-Fischer wrote:
> > > On Tue, Dec 16, 2008 at 05:36:32PM -0800, [email protected] wrote:
> > > >Author: vda
> > > >Date: 2008-12-16 17:36:31 -0800 (Tue, 16 Dec 2008)
> > > >New Revision: 24435
> > > >+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.
>
> With attached config, and i486-linux-uclibc-XXX
> toolchain, it works for me.
>
> Can you send me your .config, preprocessed source
> and gcc command line which gives you trouble?
>
> What does your gcc -v say?

defconfig i386, then enable DODEBUG and DODEBUG_PT.  using gcc-4.1.1.
-mike

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