http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51207
Tobias Burnus <burnus at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |janus at gcc dot gnu.org
--- Comment #1 from Tobias Burnus <burnus at gcc dot gnu.org> 2011-11-18
09:50:39 UTC ---
Hit enter too early. The problem is that the __def_init_... is not marked as
FL_PARAMETER and hence not as TREE_READONLY.
However, even if one manually sets attr.flavor == FL_PARAMETER, the call does
not seem to get optimized away. I assume that's because one has:
__builtin_memcpy (D.1947_18, &__def_init_m_T, D.1957_16);
which makes the analysis more difficult. Nevertheless, the default
initialization should be marked as TREE_READONLY.
