[Bug target/15286] ICE cause by reload

[uweigand at gcc dot gnu dot org]

------- 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