From: Geert Bosch <bosch@gnat.com>
To: Diego Novillo <dnovillo@redhat.com>
Cc: Jan Hubicka <hubicka@ucw.cz>, "gcc@gcc.gnu.org" <gcc@gcc.gnu.org>,
Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
Subject: Re: [RFC] Contributing tree-ssa to mainline
Date: Mon, 19 Jan 2004 18:09:00 -0000 [thread overview]
Message-ID: <A5815FCA-4AAA-11D8-AE43-000A959A128E@gnat.com> (raw)
In-Reply-To: <1074534670.25137.101.camel@frodo.toronto.redhat.com>
On Jan 19, 2004, at 12:51, Diego Novillo wrote:
> Instead of emitting runtime calls, would it be possible to emit tree
> codes with well defined semantics? On finding them, the optimizers
> would know that it's not just an arbitrary function call for instance
> (perhaps adding attributes to the libcall).
>
> But I'm oversimplifying. We would have to talk about specific cases.
There are definitely cases where we should do this. For example,
for overflow checks in integer addition and multiplication, we now
use a wider type for the arithmetic (or library routines for wide types)
and check the result against bounds. Having tree codes with
language-defined overflow semantics would allow the back end to
expand to proper instructions with trap-on-overflow or jump on
condition code. How does Java deal with this issue?
-Geert
next prev parent reply other threads:[~2004-01-19 18:09 UTC|newest]
Thread overview: 192+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-19 12:24 Richard Kenner
2004-01-19 12:31 ` Andrew Haley
2004-01-19 12:36 ` Paul Brook
2004-01-19 12:39 ` Paul Brook
2004-01-19 12:38 ` Andrew Haley
2004-01-19 12:49 ` Diego Novillo
2004-01-19 17:42 ` Geert Bosch
2004-01-19 17:51 ` Diego Novillo
2004-01-19 17:56 ` John R. Shannon
2004-01-19 18:02 ` Diego Novillo
2004-01-19 18:09 ` Geert Bosch [this message]
2004-01-19 18:27 ` Robert Dewar
2004-01-19 12:51 ` Jan Hubicka
2004-01-19 15:51 ` law
2004-01-19 17:30 ` Robert Dewar
2004-01-19 17:48 ` law
2004-01-19 17:57 ` Diego Novillo
2004-01-19 13:26 ` Theodore Papadopoulo
2004-01-19 14:23 ` Robert Dewar
2004-01-19 18:00 ` Tom Tromey
2004-01-19 18:11 ` Andrew Haley
2004-01-19 18:39 ` Jeff Sturm
-- strict thread matches above, loose matches on Subject: below --
2004-01-20 12:36 Richard Kenner
2004-01-20 15:06 ` Daniel Jacobowitz
2004-01-20 15:14 ` Steven Bosscher
2004-01-20 16:14 ` Diego Novillo
2004-01-20 11:46 Richard Kenner
2004-01-20 11:57 ` Steven Bosscher
2004-01-20 4:35 Robert Dewar
2004-01-20 4:23 Richard Kenner
2004-01-20 4:28 ` Andrew Pinski
2004-01-20 11:15 ` Diego Novillo
2004-01-19 23:40 Richard Kenner
2004-01-19 23:15 Richard Kenner
2004-01-19 23:31 ` tm_gccmail
2004-01-19 19:13 Richard Kenner
2004-01-19 18:06 Richard Kenner
2004-01-19 16:12 Richard Kenner
2004-01-19 15:05 Richard Kenner
2004-01-19 15:56 ` law
2004-01-19 22:41 ` Andrew Pinski
2004-01-19 14:17 Richard Kenner
2004-01-19 14:46 ` Diego Novillo
2004-01-19 17:58 ` Dan Nicolaescu
2004-01-19 14:02 Richard Kenner
2004-01-19 12:29 Richard Kenner
2004-01-19 11:44 Richard Kenner
2004-01-19 12:00 ` Jan Hubicka
2004-01-19 12:13 ` Andrew Pinski
2004-01-19 12:12 ` Richard Henderson
2004-01-18 13:09 Richard Kenner
2004-01-17 17:17 Dara Hazeghi
2004-01-19 17:23 ` law
2004-01-17 13:35 Richard Kenner
2004-01-17 14:05 ` Steven Bosscher
2004-01-17 15:26 ` Andreas Jaeger
2004-01-17 13:33 Richard Kenner
2004-01-17 13:29 Richard Kenner
2004-01-17 17:58 ` Diego Novillo
2004-01-17 13:20 Richard Kenner
2004-01-17 3:26 Richard Kenner
2004-01-17 14:49 ` Scott Robert Ladd
2004-01-17 3:21 Richard Kenner
2004-01-17 3:26 ` Diego Novillo
2004-01-17 5:52 ` Per Bothner
2004-01-17 6:09 ` Andrew Pinski
2004-01-18 2:46 ` Scott A Crosby
2004-01-17 8:00 ` Diego Novillo
2004-01-17 13:47 ` Florian Weimer
2004-01-17 14:48 ` Daniel Berlin
2004-01-17 14:53 ` Florian Weimer
2004-01-17 15:14 ` Daniel Berlin
2004-01-17 17:07 ` Joseph S. Myers
2004-01-17 17:14 ` Diego Novillo
2004-01-17 17:40 ` Daniel Berlin
2004-01-17 18:34 ` Mark Mitchell
2004-01-17 14:57 ` Diego Novillo
2004-01-19 23:30 ` Joe Buck
2004-01-19 23:43 ` Daniel Berlin
2004-01-20 0:20 ` Dale Johannesen
2004-01-20 3:12 ` Geert Bosch
2004-01-20 3:27 ` Diego Novillo
2004-01-17 3:15 Robert Dewar
2004-01-17 2:56 Richard Kenner
2004-01-17 3:14 ` Steven Bosscher
2004-01-17 3:20 ` Diego Novillo
2004-01-17 2:52 Richard Kenner
2004-01-17 3:12 ` Steven Bosscher
2004-01-17 2:39 Richard Kenner
2004-01-17 3:04 ` Robert Dewar
2004-01-17 16:55 ` Gerald Pfeifer
2004-01-19 14:48 ` Lars Segerlund
2004-01-19 23:37 ` Joe Buck
2004-01-17 2:28 Richard Kenner
2004-01-17 3:09 ` Steven Bosscher
2004-01-17 5:04 ` Roger Sayle
2004-01-17 5:31 ` Diego Novillo
2004-01-17 6:04 ` Roger Sayle
2004-01-17 6:19 ` David Edelsohn
2004-01-17 14:54 ` Scott Robert Ladd
2004-01-17 14:01 ` Jan Hubicka
2004-01-17 14:20 ` Roger Sayle
2004-01-17 14:29 ` Roger Sayle
2004-01-17 14:44 ` Jan Hubicka
2004-01-17 15:07 ` Jan Hubicka
2004-01-17 14:37 ` Jan Hubicka
2004-01-17 21:32 ` Richard Henderson
2004-01-17 21:45 ` Diego Novillo
2004-01-17 5:06 ` Diego Novillo
2004-01-17 6:13 ` law
2004-01-17 12:07 ` Robert Dewar
2004-01-17 12:15 ` John R. Shannon
2004-01-19 23:46 ` Joe Buck
2004-01-17 0:19 Diego Novillo
2004-01-17 0:31 ` Daniel Berlin
2004-01-17 0:35 ` Andrew Pinski
2004-01-17 0:44 ` Gerald Pfeifer
2004-01-17 0:53 ` law
2004-01-17 0:54 ` law
2004-01-17 1:37 ` Gerald Pfeifer
2004-01-17 1:46 ` Diego Novillo
2004-01-17 0:55 ` Eric Christopher
2004-01-17 2:48 ` Robert Dewar
2004-01-17 22:08 ` Eric Christopher
2004-01-17 1:02 ` Joseph S. Myers
2004-01-17 1:51 ` Kaveh R. Ghazi
2004-01-17 2:01 ` Gabriel Dos Reis
2004-01-17 2:17 ` Kaveh R. Ghazi
2004-01-17 3:01 ` Daniel Berlin
2004-01-17 2:19 ` Steven Bosscher
2004-01-17 3:02 ` Robert Dewar
2004-01-17 3:55 ` Andrew Pinski
2004-01-17 3:36 ` Diego Novillo
2004-01-17 13:06 ` Giovanni Bajo
2004-01-17 13:53 ` Jan Hubicka
2004-01-18 7:01 ` law
2004-01-17 17:04 ` Kaveh R. Ghazi
2004-01-17 17:16 ` Scott Robert Ladd
2004-01-17 17:30 ` Kaveh R. Ghazi
2004-01-17 17:50 ` Scott Robert Ladd
2004-01-17 17:37 ` Robert Dewar
2004-01-17 17:46 ` Joseph S. Myers
2004-01-17 17:51 ` Robert Dewar
2004-01-17 18:11 ` Joseph S. Myers
2004-01-17 19:12 ` Arnaud Charlet
2004-01-29 0:36 ` Robert Dewar
2004-01-29 0:00 ` Robert Dewar
2004-01-17 17:58 ` Scott Robert Ladd
2004-01-17 18:09 ` Joseph S. Myers
2004-01-17 18:06 ` Mark Mitchell
2004-01-18 7:15 ` law
2004-01-18 15:50 ` Daniel Berlin
2004-01-17 17:12 ` Kaveh R. Ghazi
2004-01-17 17:26 ` Diego Novillo
2004-01-17 5:31 ` Diego Novillo
2004-01-17 6:15 ` law
2004-01-17 6:22 ` Andrew Pinski
2004-01-17 6:38 ` Diego Novillo
2004-01-17 14:45 ` Daniel Berlin
2004-01-17 21:23 ` law
2004-01-17 21:33 ` Steven Bosscher
2004-01-18 2:34 ` Zack Weinberg
2004-01-17 11:16 ` Joseph S. Myers
2004-01-17 17:50 ` Diego Novillo
2004-01-17 18:06 ` Joseph S. Myers
2004-01-17 20:14 ` Steven Bosscher
2004-01-17 23:38 ` Toon Moene
2004-01-18 1:06 ` Phil Edwards
2004-01-17 2:15 ` Steven Bosscher
2004-01-17 3:01 ` Robert Dewar
2004-01-17 11:08 ` Andrew Walrond
2004-01-17 23:33 ` Toon Moene
2004-01-17 14:30 ` Scott Robert Ladd
2004-01-17 14:57 ` Paul Brook
2004-01-17 15:28 ` Scott Robert Ladd
2004-01-17 21:24 ` law
2004-01-17 21:47 ` Diego Novillo
2004-01-17 19:01 ` Mark Mitchell
2004-01-17 19:23 ` Andrew Pinski
2004-01-18 0:14 ` Toon Moene
2004-01-20 1:39 ` Kaveh R. Ghazi
2004-01-20 2:00 ` Gabriel Dos Reis
2004-01-20 2:08 ` Mark Mitchell
2004-01-20 2:31 ` Gabriel Dos Reis
2004-01-20 15:19 ` Scott Robert Ladd
2004-01-20 15:27 ` Andrew Haley
2004-01-20 2:09 ` Diego Novillo
2004-01-22 8:49 ` Gerald Pfeifer
2004-01-17 19:22 ` Daniel Jacobowitz
2004-01-17 19:34 ` Richard Guenther
2004-01-17 20:21 ` Steven Bosscher
2004-01-18 1:24 ` David Edelsohn
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