[Bug middle-end/43631] var-tracking inserts notes with non-NULL BLOCK_FOR_INSN in between basic blocks

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43631

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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             Status|REOPENED                    |ASSIGNED
         AssignedTo|unassigned at gcc dot       |jakub at gcc dot gnu.org
                   |gnu.org                     |

--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-12-07 12:11:24 UTC ---
Created attachment 28890
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28890
gcc48-pr43631.patch

No, initially I've fixed this up in cleanup_barriers, to allow
NOTE_INSN_CALL_ARG_LOCATION in between noreturn CALL_INSN and following
BARRIER, which is what var-tracking was emitting.
But, double checking dwarf2out.c reveals that we could indeed emit the notes
after BARRIER instead if there is any.  So I'm leaning towards this patch.