On Wed, Feb 8, 2012 at 8:32 PM, Jakub Jelinek <ja...@redhat.com> wrote: > Hi! > > emit_note_insn_var_location already had code to ensure that > non-NOTE_DURING_CALL_P notes emitted EMIT_NOTE_BEFORE_INSN > with NEXT_INSN (call_insn) are put after all the NOTE_DURING_CALL_P > notes after the call, but if there is NOTE_INSN_CALL_ARG_LOCATION > note there too, this code doesn't trigger and we would emit > a non-NOTE_DURING_CALL_P note before NOTE_INSN_CALL_ARG_LOCATION > note possibly followed by NOTE_DURING_CALL_P notes. That then may > trigger ICEs in dwarf2out, which assumes that the LVL labels change > monotonically, and that for calls first come all .LVLXXX-1 labels (if any) > and then .LVLXXX (if any). > > Fixed thusly, bootstrapped/regtested on x86_64-linux and i686-linux and > with go cross to s390x-linux. Ok for trunk?
Ok. Thanks, Richard. > 2012-02-08 Jakub Jelinek <ja...@redhat.com> > > PR debug/52165 > * var-tracking.c (emit_note_insn_var_location): If > EMIT_NOTE_BEFORE_INSN and insn is NOTE_INSN_CALL_ARG_LOCATION, > emit it before next non-NOTE_INSN_CALL_ARG_LOCATION > non-NOTE_DURING_CALL_P insn. > > --- gcc/var-tracking.c.jj 2012-01-30 00:10:01.000000000 +0100 > +++ gcc/var-tracking.c 2012-02-08 16:20:54.808523330 +0100 > @@ -8225,9 +8225,14 @@ emit_note_insn_var_location (void **varp > /* Make sure that the call related notes come first. */ > while (NEXT_INSN (insn) > && NOTE_P (insn) > - && NOTE_DURING_CALL_P (insn)) > + && ((NOTE_KIND (insn) == NOTE_INSN_VAR_LOCATION > + && NOTE_DURING_CALL_P (insn)) > + || NOTE_KIND (insn) == NOTE_INSN_CALL_ARG_LOCATION)) > insn = NEXT_INSN (insn); > - if (NOTE_P (insn) && NOTE_DURING_CALL_P (insn)) > + if (NOTE_P (insn) > + && ((NOTE_KIND (insn) == NOTE_INSN_VAR_LOCATION > + && NOTE_DURING_CALL_P (insn)) > + || NOTE_KIND (insn) == NOTE_INSN_CALL_ARG_LOCATION)) > note = emit_note_after (NOTE_INSN_VAR_LOCATION, insn); > else > note = emit_note_before (NOTE_INSN_VAR_LOCATION, insn); > > Jakub
