--- Comment #4 from rguenth at gcc dot gnu dot org 2010-02-27 21:33 ---
This is because
p = 0;
is not detected as dead store by tree DSE as in
p = 0;
r = *q;
p = (T *) t[0];
*q may load from p because with LTO TBAA rules for pointers have been
relaxed (for a reason but also i
--- Comment #3 from d dot g dot gorbachev at gmail dot com 2010-02-27
21:06 ---
Created an attachment (id=19980)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19980&action=view)
C source
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43201
--- Comment #2 from d dot g dot gorbachev at gmail dot com 2010-02-27
21:05 ---
Created an attachment (id=19979)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19979&action=view)
Code compiled without `-flto'
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43201
--- Comment #1 from d dot g dot gorbachev at gmail dot com 2010-02-27
21:04 ---
Created an attachment (id=19978)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19978&action=view)
Code produced by lto1
Compiled with `-O2 -flto'
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43
