From: Michael Matz <matz@suse.de>
To: "S. Bosscher" <S.Bosscher@student.tudelft.nl>
Cc: "'kenner@vlsi1.ultra.nyu.edu '" <kenner@vlsi1.ultra.nyu.edu>,
"'paolo.bonzini@polimi.it '" <paolo.bonzini@polimi.it>,
"'gcc@gcc.gnu.org '" <gcc@gcc.gnu.org>
Subject: RE: What to remove after tree-ssa is merged?
Date: Wed, 04 Feb 2004 14:04:00 -0000 [thread overview]
Message-ID: <Pine.LNX.4.58.0402041453321.29200@wotan.suse.de> (raw)
In-Reply-To: <4195D82C2DB1D211B9910008C7C9B06F01F3741E@lr0nt3.lr.tudelft.nl>
Hi,
On Wed, 4 Feb 2004, S. Bosscher wrote:
> But since Ada is lagging, like, three years on the rest of GCC,
> and nobody so far has explained what PLACEHOLDER_EXPR is for
It's not that Kenner is totally wrong with documentation ;-)
PLACEHOLDER_EXPR is described in tree.def and is used for types whose
layout/content changes with values of members in such type. Like
pseudo-type:
type T {
switch enum BLA discriminator {
VARIANT_1 : int i; char c;
VARIANT_2 : char d; long l;
}
}
Here the offset of T.c (or even it's existance) depends on the value of
T.discriminator.
Ciao,
Michael.
next prev parent reply other threads:[~2004-02-04 14:04 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-04 13:29 S. Bosscher
2004-02-04 13:49 ` Paul Brook
2004-02-04 14:04 ` Michael Matz [this message]
2004-02-04 14:19 ` Robert Dewar
2004-02-04 14:31 ` Andrew Pinski
2004-02-04 14:53 ` Robert Dewar
-- strict thread matches above, loose matches on Subject: below --
2004-02-04 21:55 Richard Kenner
2004-02-04 21:25 Richard Kenner
2004-02-04 21:51 ` Paul Brook
2004-02-04 21:09 Richard Kenner
2004-02-05 5:32 ` Richard Henderson
2004-02-05 5:50 ` Geert Bosch
2004-02-04 20:55 Richard Kenner
2004-02-04 21:21 ` Paul Brook
2004-02-04 18:43 Richard Kenner
2004-02-04 19:49 ` Paul Brook
2004-02-04 20:15 ` Richard Henderson
2004-02-04 17:54 Richard Kenner
2004-02-04 18:39 ` Paul Brook
2004-02-04 16:14 Richard Kenner
2004-02-04 16:39 ` Michael Matz
2004-02-04 15:49 Richard Kenner
2004-02-04 16:10 ` Michael Matz
2004-02-04 17:25 ` Robert Dewar
2004-02-04 15:21 Richard Kenner
2004-02-04 15:19 Richard Kenner
2004-02-04 15:31 ` Michael Matz
2004-02-04 15:16 S. Bosscher
2004-02-04 14:48 Richard Kenner
2004-02-04 14:36 Richard Kenner
2004-02-04 14:44 ` Andrew Pinski
2004-02-04 15:15 ` Michael Matz
2004-02-04 13:52 Richard Kenner
2004-02-04 12:30 Richard Kenner
2004-02-03 16:20 "Documentation by paper" Richard Kenner
2004-02-03 16:54 ` Jan Hubicka
2004-02-03 16:58 ` What to remove after tree-ssa is merged? Paolo Bonzini
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