[MPlayer-dev-eng] [PATCH] fixes for gcc4

[Michael Niedermayer]

Hi

On Sunday 27 February 2005 11:00, Gianluigi Tiesi wrote:
> On Sat, Feb 26, 2005 at 10:56:50PM +0100, Michael Niedermayer wrote:
[...]
> > furthermore theres the fundamental question why exactly every project
> > which uses asm should rewrite their code for gcc 4, this is not about
> > correct or incorrect code, its practically just a syntax change
> > the changes gcc 4 needs makes the code much harder to read, harder to
> > optimize for the compiler and much longer
> >
> > is there some bugreport on gccs bugtracker about this? its breaking code
> > which was valid in the past
>
> There is no sense at all to assign a memory operand to a bit & binary
> operation, 

diagree


> since there is no memory for this value unless you don't use a 
> variable, 

yes, but neither is there a register to such a operation, the compiler can 
build the value in memory so it is never in a register, its the exact same 
situation, the compiler must put the value in a place which matches the 
constraint, not the user, later just cant, you could also consider a 
constraint with a specific register, its the compiler which must ensure that 
it ends in that register, the user has no control over this


[...]

> There is no advantage to retain a broken code even if it's more
> readable.

please elaborate about why it is broken in your oppinion

-- 
Michael

"nothing is evil in the beginning. Even Sauron was not so." -- Elrond