------- Comment #8 from rguenth at gcc dot gnu dot org 2006-08-10 07:41 ------- I implemented the expander to allow the x87 backend using fsincos for it. The problems (TREE_ADDRESSABLE, no real folding, no CSE with previous sin/cos) still exist. I had/have (I don't remember if I submitted them) patches to canonicalize sin/cos/sincos to cexp and expand cexp to sin/cos/sincos dependent on arguments.
If this PR was only about x87 using fsincos for sincos this is fixed now. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17687
