weird optimization in sin+cos, x86 backend

[Andrew Haley]

On 02/09/2012 06:00 PM, Joseph S. Myers wrote:
> On Thu, 9 Feb 2012, Andrew Haley wrote:
> 
>> On 02/09/2012 04:53 PM, Joseph S. Myers wrote:
>>> My view is that we should have a "GNU libm" project whose purpose is not 
>>> to install a library directly but to provide functions for use in other 
>>> projects (much like gnulib, but the functions could presume that they were 
>>> being built with recent GCC).
>>
>> But why, exactly?  Simply because we could never get an improved
>> libm into glibc with Ulrich Drepper and Richard Stallman as
>> gatekeepers?
> 
> No, the point of the separate project would be to be used by both glibc 
> and GCC (and possibly other GNU projects such as GSL) - because 
> cooperation among the various projects wanting such functions is the right 
> way to do things.

Well, yes, but I don't quite understand why libm isn't obviously a
sub-project of libc.

Andrew.