[patch] Fixed-point patch 9/10

Mark Mitchell mark@codesourcery.com
Wed Sep 12 07:00:00 GMT 2007


Fu, Chao-Ying wrote:

>   Is there any status update for this patch (9/10)?
> http://gcc.gnu.org/ml/gcc-patches/2007-08/msg00099.html

Wow, that's a lot of routines. :-)  I'm going to trust you that the
implementations of the various routines are OK.  How many of those
routines are actually necessary on a MIPS processor that supports
fixed-point?  Do almost all of them get eliminated from libgcc?

I'm a little worried about how much bigger this will make libgcc, but if
it only affects targets configured with fixed-point emulation, then I'm
not so worried.  (I suspect that most people will either used a
fixed-point processor, or will not even turn on the emulation.)

>   One issue that we want to mention is that
> building this fixed-point libgcc library requires GNU make 3.81,
> due to code in Makefile.in:

Thank you for pointing this out.  The make code you've written looks
very tidy.  However, I don't think we can require GNU make 3.81 at this
point.  I think it would be reasonable to require that for GCC 4.4, but
I think it's a bit late in the game to require that for 4.3.  In any
case, it's not a decision I can make unilaterally.  Is it possible to do
what you need to do with an older version of GNU make?  (I can't
remember what the oldest supported version of GNU make is for GCC.)

Thanks,

-- 
Mark Mitchell
CodeSourcery
mark@codesourcery.com
(650) 331-3385 x713



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