optimization/7056: [ARM] zero extend code worse in 3.1 than 3.0

[rearnsha@gcc.gnu.org]

Synopsis: [ARM] zero extend code worse in 3.1 than 3.0

State-Changed-From-To: open->analyzed
State-Changed-By: rearnsha
State-Changed-When: Mon Jun 17 09:37:22 2002
State-Changed-Why:
    This was introduced as a result of trying to fix pr 6086.  However,
    I think it is just hiding the real problem, which is in reload.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7056