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Re: RFC: Variables in blocks of registers
> However, right now GCC doesn't generate this. Probably because it
> would kill us. If I have any mental energy left after location lists,
> I may implement support for DW_OP_piece.
Err, the location list patch does.
Even without it, you can get them in one specific case (If you have
CONCAT's in RTL).
So GCC *does* generate it, right now.
CONCATS only pop up when we are using complex numbers, as far as a quick
grep of the gcc code shows.