middle-end/6679: wrong code generated for dead code

[reichelt@igpm.rwth-aachen.de]

Synopsis: wrong code generated for dead code

State-Changed-From-To: analyzed->closed
State-Changed-By: reichelt
State-Changed-When: Fri Nov  8 03:22:43 2002
State-Changed-Why:
    Because this PR is quite large and slightly corrupted,
    I created a new one - PR 8502 - with a reduced testcase
    to make bug-fixing easier ;-)

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6679