[Bug debug/54971] SRA pessimizes debug info by not creating debug stmts for fields without replacements

[jamborm at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54971

--- Comment #2 from Martin Jambor <jamborm at gcc dot gnu.org> 2012-10-18 17:37:25 UTC ---
I already have a work-in-progress patch based on your suggestions that
works for the testcase but need to think a bit more about less obvious
cases that might happen.  However, I have to leave the office now and
so will continue tomorrow.  I will probably have some questions about
what I can put to the debug statements.

To answer your question, apart from the change in
analyze_access_subtree you described, all code checking the
grp_to_be_replaced flag that might be looking at a LHS has to be
extended to look at this flag too.  But as I said, I already have a
WIP patch.

Thanks.