optimization/3967: gcc30 on Sparc, generates bad code causing SIGBUS

[rth@gcc.gnu.org]

Synopsis: gcc30 on Sparc, generates bad code causing SIGBUS

Responsible-Changed-From-To: unassigned->rth
Responsible-Changed-By: rth
Responsible-Changed-When: Tue Apr  2 03:43:16 2002
Responsible-Changed-Why:
    .
State-Changed-From-To: open->analyzed
State-Changed-By: rth
State-Changed-When: Tue Apr  2 03:43:16 2002
State-Changed-Why:
    local-alloc is creating some weird reg_equiv notes,
    which confuses reload into using a lo_sum without a
    corresponding high.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=3967