------- Additional Comments From uweigand at gcc dot gnu dot org 2004-10-15 10:46
-------
As I understand it, generation of subregs the hardware does not support
should be prevented by the CANNOT_CHANGE_MODE_CLASS mechanism. Reload
would reload the full inner reg into a register that allows the desired
mode change instead.
Could you try to find out why this doesn't work? Does reload fail to call
CANNOT_CHANGE_MODE_CLASS somewhere? Or is the rs6000 definition of that
macro incorrect?
--
What |Removed |Added
----------------------------------------------------------------------------
Known to fail|3.3.3 3.4.0 4.0 |3.3.3 3.4.0 4.0.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15286
