[Bug lto/44992] ld -r breaks LTO

[rguenth at gcc dot gnu dot org]

------- Comment #5 from rguenth at gcc dot gnu dot org  2010-07-20 09:00 -------
I was refering to a situation like

 gcc -c -flto t1.c
 gcc -c t2.c
 gcc -o t.o -r -nostdlib t1.o t2.o [-flto]
 gcc -o t t.o -flto

which would break with your solution (it's broken right now as well, of
course).

We could make it work by not emitting code but only LTO sections for t1.o.
Then the partial link would cause us to have both LTO sections and regular
sections, so at link-time we'd pick up the LTO parts for re-optimization
and link the code parts without re-optimization.  We'd still need a way
to merge LTO sections (or mangle them like you do), of course.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44992