[Bug middle-end/40815] redundant neg instruction caused by loop-invariant

[ramana at gcc dot gnu dot org]

------- Comment #5 from ramana at gcc dot gnu dot org  2009-09-18 23:46 -------
This should be a middle end bug rather than  a target bug. TER needs to
maintain state regarding the negate_expr (which is in a previous basic block
but only has a single use) and then we could query the def during expand. 


-- 

ramana at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|target                      |middle-end


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40815