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Re: head: MIPS: A workaround for the R4000 divide/shift errata

On Sat, 28 Feb 2004, Richard Sandiford wrote:

> I hope you don't mind, but I decided to change the name of the option to
> -mfix-r4000 (and changed the names of the internal macros accordingly).
> -march=r4000 is the canonical option for selecting R4000 code and it
> would be confusing to have a different convention for -mfix-*.

 It's OK, I've wondered about it, too.

> [ I know this isn't really consistent with the existing -mfix4300
>   option, but then again, neither was -mfix-4000.  -mfix4300 should
>   probably have been named -mfix-vr4300 (to make the family explicit)
>   but it's too late do anything about that now.
>   Also, gas does have a -mfix-7000 option, but the negative of that
>   is -mno-fix7000 (no extra dash), so I don't see that as a good
>   example to follow.  There's also -mfix-vr4122-bugs, which is a bit
>   more consistent with the new name, except for the extra "-bugs".
>   -mfix-r4000 seems more in the spirit of -mfix-sb1 though.
>   All anal stuff, but I had a feeling someone would point this out
>   to me unless I proved I'd done my homework. ;) ]

 Hmm, how about adding consistent aliases and deprecating old options?  

> I was going to add a comment about why the nop was needed even for
> -mcheck-zero-division.  In the end, I figured it was easier just to
> force the division into the delay slot as previously discussed.
> Working on that now.

 Please wait for a while.  I have two more patches for this area to 
reflect events that happened meanwhile.


+  Maciej W. Rozycki, Technical University of Gdansk, Poland   +
+        e-mail:, PGP key available        +

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