[Bug rtl-optimization/53595] Code size increase of +10% between two 4.7.1 snapshot

[gjl at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53595

--- Comment #9 from Georg-Johann Lay <gjl at gcc dot gnu.org> 2012-06-07 
13:27:33 UTC ---
Created attachment 27576
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27576
pr53595.diff

And here is a tentative patch:

Let HARD_REGNO_CALL_PART_CLOBBERED return false if HARD_REGNO_MODE_OK is false.