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Re: RFC: Variables in blocks of registers

From: Daniel Berlin <dberlin at dberlin dot org>
To: Daniel Jacobowitz <drow at mvista dot com>
Cc: Andrew Cagney <ac131313 at redhat dot com>, Mark Kettenis <kettenis at chello dot nl>, "" <gdb at sources dot redhat dot com>
Date: Sun, 2 Feb 2003 10:33:29 -0500 (EST)
Subject: Re: RFC: Variables in blocks of registers
References: <200302011448.h11EmCkP001176@elgar.kettenis.dyndns.org><3E3BEC50.9040104@redhat.com> <20030201171001.GB29662@nevyn.them.org>

>
> 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.

--Dan

References:
- RFC: Variables in blocks of registers
  - From: Mark Kettenis
- Re: RFC: Variables in blocks of registers
  - From: Andrew Cagney
- Re: RFC: Variables in blocks of registers
  - From: Daniel Jacobowitz

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