[Bug debug/41353] VTA missed-debug issues

[jakub at gcc dot gnu dot org]

------- Comment #2 from jakub at gcc dot gnu dot org  2009-09-14 09:15 -------
Regarding the second testcase, the second i1 note (no real location) comes from
emit_notes_for_changes (insn, EMIT_NOTE_AFTER_INSN, set->vars); in MO_VAL_LOC
handling, the first one (with the correct location) is emitted later on from
MO_VAL_USE's emit_notes_for_changes (insn, EMIT_NOTE_BEFORE_INSN, set->vars);
(in both cases with the same VALUE, but in the first case
val_expand_loc_callback returns the VALUE unexpanded, in the second case
expanded).


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41353