[Bug lto/60404] [4.9 Regression] wrong code by LTO on x86_64-linux-gnu

[su at cs dot ucdavis.edu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60404

--- Comment #6 from Zhendong Su <su at cs dot ucdavis.edu> ---
(In reply to Jakub Jelinek from comment #5)
> Fixed, thanks for reporting this.

Jakub, thanks for the quick fix! 

I'm intrigued by Eric's earlier comment.  Is it one of the purposes of LTO so
that one could link object files (and shared libraries) compiled separately,
and possibly by others?  In that case, I could certainly imagine linking at
-O0, say for debugging, etc., correct?