egcs-1.1 status

[Andi Kleen]

On Fri, Aug 21, 1998 at 09:57:02PM +0200, Jeffrey A Law wrote:
> 
>   In message < 19980821210907.A29470@kali.lrz-muenchen.de >you write:
>   > The problem was discussed around egcs 1.0.0 release on the egcs mailing
>   > lists.  You should find it including test cases if you search the archives.
>   > 
>   > It was decided that these assembler functions a) use wrong constraints
>   > and b) use too many registers. The problem is still there, as shown by
>   > regular bug reports on linux-kernel that go away after switching to 
>   > gcc 2.7.x. 
> I was informed that the bugs asms were not going to be fixed in the
> 2.0.xx kernels.  Thus any code which sucks in those bogus asms is 
> probably going to have problems.  There's nothing we can/should do
> about this.

I was refering to 2.1 kernels. There were some fixes in 2.1, but it seems they 
were not enough to make it work in all cases. If you look at 
include/asm-i386/string.h in a Linux installation you'll see that it is 
rather hairy asm code, that is why I suggested to replace the non speed
critical things with C functions.

A new problem that just has appeared today is that Linux 2.1 uses 
__attribute__((regparm)) for some critical functions, and at least egcs 1.0
seems to have problems to generate correct code with this in all cases.

-Andi