[FFmpeg-devel] [PATCH] Fix compilation with 64-bit MinGW

[Reimar Döffinger]

On Sun, Oct 19, 2008 at 05:52:58PM +0100, M?ns Rullg?rd wrote:
> Reimar D?ffinger <Reimar.Doeffinger at stud.uni-karlsruhe.de> writes:
> > Index: libavcodec/i386/dsputil_mmx.c
> > ===================================================================
> > --- libavcodec/i386/dsputil_mmx.c	(revision 15647)
> > +++ libavcodec/i386/dsputil_mmx.c	(working copy)
> > @@ -2239,6 +2239,7 @@
> >  }
> >
> >  static void float_to_int16_3dnow(int16_t *dst, const float *src, long len){
> > +    x86_reg reglen = len;
> >      // not bit-exact: pf2id uses different rounding than C and SSE
> >      __asm__ volatile(
> >          "add        %0          , %0        \n\t"
> > @@ -2257,10 +2258,11 @@
> >          "add        $16         , %0        \n\t"
> >          " js 1b                             \n\t"
> >          "femms                              \n\t"
> > -        :"+r"(len), "+r"(dst), "+r"(src)
> > +        :"+r"(reglen), "+r"(dst), "+r"(src)
> 
> Why not "+r"((x86_reg)len)?

Because it does not compile, +r needs an lvalue.