[Bug rtl-optimization/66790] Invalid uninitialized register handling in REE

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66790

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2015-07-29
     Ever confirmed|0                           |1

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
So what is the issue with replacing zero-extending an uninitialized %ebp
with a random other value?  Both are essentially undefined when reached via
the somlabel bypass.

Is the real issue happening in a downstream pass?  I don't think REE does
anything wrong here.