* config/rs6000/rs6000.md (bunordered): New expander.

* config/rs6000/rs6000.md (bunordered): New expander.
(bordered): New expander.
(buneq): New expander.
(bunge): New expander.
(bungt): New expander.
(bunle): New expander.
(bunlt): New expander.
(bltgt): New expander.

* config/rs6000/rs6000.c (ccr_bit): Handle unordered comparisons.
(ccr_bit_negated_p): New function.
(print_operand): For %C, generate appropriate cror for UNEQ,
UNLT, UNGT, and LTGT.  For %T and %t, use ccr_bit_negated_p.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@32657 138bc75d-0d04-0410-961f-82ee72b054a4