[Ffmpeg-devel] gcc4 support & MMX fixups (from Debian)
Thu Feb 2 01:39:08 CET 2006
On Wed, 1 Feb 2006 18:03:26 +0100
Pawe? Sikora <pluto at pld-linux.org> wrote:
> Dnia Wednesday, 1 of February 2006 01:39, Aurelien Jacobs napisa?:
> > > hmmm, the 4.1/4.0 fixed_transpose4x4 are equal but benchmarks differs.
> > > maybe orig_transpose4x4 has different prologue?
> > seems so.
> > [ 4.0 / -O2 ]
> > orig_transpose4x4:
> > leal (%rdx,%rdx), %r8d
> > movslq %edx,%r10
> > leaq (%rcx,%rcx,2), %rax
> > movslq %r8d,%r9
> > addl %edx, %r8d
> > movslq %r8d,%r8
> > #APP
> it's strange. pure 4.0.[2,3] gives the same prologue as 4.1.
> do you have a custom patches for 4.0.2?
$ gcc --version
gcc (GCC) 4.0.3 20060115 (prerelease) (Debian 4.0.2-7)
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