http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51505
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |bonzini at gnu dot org
--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-12-13
11:02:32 UTC ---
> IMHO the problem is that we have a REG_EQUAL note that refers to dead pseudos,
> perhaps DF should just remove such notes?
I'd think so. When DF adds REG_DEAD/REG_UNUSED notes, it knowingly ignores
REG_EQUAL/REG_EQUIV notes (even if you do df_set_flags (DF_EQ_NOTES) before
df_note_add_problem). That's a reasonable choice, but then it should remove
the latter notes that have become invalid because of the former.
Paolo, would this be easily doable?
