[Bug tree-optimization/51117] [4.7 regression] rev.181172 causes glibc build failure

[rth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51117

Richard Henderson <rth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
   Last reconfirmed|                            |2011-11-29
                 CC|                            |rth at gcc dot gnu.org
         Resolution|MOVED                       |
     Ever Confirmed|0                           |1

--- Comment #3 from Richard Henderson <rth at gcc dot gnu.org> 2011-11-29 18:06:55 UTC ---
I think this is a gcc bug.  In particular, one of two things ought to happen:

(1) Use the form of try_finally that ignores EH.  This would lose clobber
    information on EH paths; dunno if this really turns out to be important.

(2) Remove EH cleanup handlers that only involve clobbers which lead to 
    function exit via REX.  This would wait until pass_lower_eh_dispatch,
    as that's the first point at which we know whether we actually exit
    the function, post-inlining.