Richard Henderson wrote:
I do not see the point why you should discourage the register allocator
from using mmx registers, move through memory is clearly inefficent and
enlarges resulting code (if the function containing moves is inlined in
several places, even more so).
First, what you
I filed a bug #23660:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23660
Regards,
Vahur
Richard Guenther wrote:
On 8/31/05, Vahur Sinijärv <[EMAIL PROTECTED]> wrote> Hi,
No, the problem I wrote about is not fixed. I used GCC from CVS head
30.08.2005.
I think you found a different bug, you s
On Wed, Aug 31, 2005 at 02:23:03PM +0300, Vahur Sinijärv wrote:
> So, my question is: Should this requirement of using secondary memory to
> move MMX registers between general regs be relaxed ?
No.
> I do not see the point why you should discourage the register allocator
> from using mmx regist
On 8/31/05, Vahur Sinijärv <[EMAIL PROTECTED]> wrote> Hi,
>
> No, the problem I wrote about is not fixed. I used GCC from CVS head
> 30.08.2005.
> I think you found a different bug, you seem to have many unneccessary
> uses of secondary memory between moves from MMX reg to MMX reg. The code
> I wr
Hi,
No, the problem I wrote about is not fixed. I used GCC from CVS head
30.08.2005.
I think you found a different bug, you seem to have many unneccessary
uses of secondary memory between moves from MMX reg to MMX reg. The code
I wrote about (in i386.c) allows direct moves between MMX regs, but
p
Hi,
Vahur Sinijärv schrieb:
> I've found that latest GCC versions (past 4.0.0 and up to latest in CVS
> head) never use 'movd %genreg, %mmxreg' to load mmx registers and always
> insists doing it through memory eq.
> 'mov %genreg, (mem)'
> 'movd (mem), %mmxreg'
I haven't read entirely through you
Hi !
I've found that latest GCC versions (past 4.0.0 and up to latest in CVS
head) never use 'movd %genreg, %mmxreg' to load mmx registers and always
insists doing it through memory eq.
'mov %genreg, (mem)'
'movd (mem), %mmxreg'
Older GCC versions do the same thing directly, without involving
