[Bug c++/49519] [4.7 Regression] Revision 175272 miscompiled 447.dealII in SPEC CPU 2006

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49519

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ebotcazou at gcc dot
                   |                            |gnu.org

--- Comment #12 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-07-06 08:38:56 UTC ---
If it happens that the MEM_REF case (supposedly with the adjusted base pointer)
does not work while the non-MEM_REF case works then this looks like a
latent problem in the tailcall code to me.  I see nothing wrong with the
GIMPLE itself.  Eventually we can adjust code-gen for the MEM_REF case to
match that of the pure component-ref one, but that would again just paper
over the issue.