> Regarding sincos(), a patch was submitted to gcc-patches 
> (http://gcc.gnu.org/ml/gcc-patches/2004-04/msg00555.html). It used 
> soon-to-be-obsoleted ADDRESSOF optimization in sincos expander 
> (http://gcc.gnu.org/ml/gcc-patches/2004-04/msg00653.html), so it was not 
> commited to CVS. As fsincos is generated automatically, it was somehow 
> put on hold...

Just FYI (I don't think this is appropriate for stage3, and I haven't 
bootstrapped/regtested it yet), here is a patch that does what I 
suggested in the message Uros cited above.

Some magic is needed to avoid bad interaction with the cos (-x) => cos 
(x) optimization, but the patch is quite simple.

Paolo

2004-09-24  Paolo Bonzini  <bonzini@gnu.org>

	* builtins.c (fold_builtin_sincos): New.
	(fold_builtin): Call it.

2004-09-24  Paolo Bonzini  <bonzini@gnu.org>

	* gcc.dg/i386-387-9.c, gcc.dg/builtins-47.c: New testcases.