From: David Edelsohn <dje@watson.ibm.com>
To: "David S. Miller" <davem@redhat.com>
Cc: dan@dberlin.org, austern@apple.com, gcc@gcc.gnu.org
Subject: Re: Faster compilation speed
Date: Tue, 13 Aug 2002 14:03:00 -0000 [thread overview]
Message-ID: <200208132103.RAA25968@makai.watson.ibm.com> (raw)
In-Reply-To: <200208131749.NAA14432@makai.watson.ibm.com>
Here's an interesting (aka depressing) data point. My previous
cache miss statistics were for GCC -O2. At -O0, GCC's cache miss
statistics stay the same or get up to 20% *worse*. In comparison, the
cache statistics for IBM's compiler without optimization enabled *improve*
up to 50 for the same reload.c and insn-recog.c input files compared to
optimized.
GCC has some sort of overhead, maybe the tree->RTL conversion as
Dan mentioned, which really hurts re-use at -O0.
David
next prev parent reply other threads:[~2002-08-13 14:03 UTC|newest]
Thread overview: 256+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-09 12:17 Mike Stump
2002-08-09 13:04 ` Noel Yap
2002-08-09 13:10 ` Matt Austern
2002-08-09 14:22 ` Neil Booth
2002-08-09 14:44 ` Noel Yap
2002-08-09 15:14 ` Neil Booth
2002-08-10 15:54 ` Noel Yap
2002-08-09 15:13 ` Stan Shebs
2002-08-09 15:18 ` Neil Booth
2002-08-10 16:12 ` Noel Yap
2002-08-10 18:00 ` Nix
2002-08-10 20:36 ` Noel Yap
2002-08-11 4:30 ` Nix
2002-08-12 15:08 ` Mike Stump
2002-08-09 15:19 ` Ziemowit Laski
2002-08-09 15:25 ` Neil Booth
2002-08-10 16:16 ` Noel Yap
2002-08-10 16:07 ` Noel Yap
2002-08-10 16:18 ` Neil Booth
2002-08-10 20:27 ` Noel Yap
2002-08-11 0:11 ` Neil Booth
2002-08-12 12:04 ` Devang Patel
2002-08-09 18:57 ` Linus Torvalds
2002-08-09 19:12 ` Phil Edwards
2002-08-09 19:34 ` Kevin Atkinson
2002-08-09 20:28 ` Linus Torvalds
2002-08-09 21:12 ` Daniel Berlin
2002-08-09 21:52 ` Linus Torvalds
2002-08-10 6:32 ` Robert Lipe
2002-08-10 14:26 ` Cyrille Chepelov
2002-08-10 17:33 ` Daniel Berlin
2002-08-10 18:21 ` Linus Torvalds
2002-08-10 18:38 ` Daniel Berlin
2002-08-10 18:39 ` Cyrille Chepelov
2002-08-10 18:28 ` Cyrille Chepelov
2002-08-10 18:30 ` John Levon
2002-08-11 1:03 ` Florian Weimer
2002-08-10 19:20 ` Noel Yap
2002-08-09 13:10 ` Aldy Hernandez
2002-08-09 15:28 ` Mike Stump
2002-08-09 16:00 ` Aldy Hernandez
2002-08-09 16:26 ` Stan Shebs
2002-08-09 16:31 ` Aldy Hernandez
2002-08-09 16:51 ` Stan Shebs
2002-08-09 16:54 ` Aldy Hernandez
2002-08-09 17:44 ` Daniel Berlin
2002-08-09 18:35 ` David S. Miller
2002-08-09 18:39 ` Aldy Hernandez
2002-08-09 18:59 ` David S. Miller
2002-08-09 20:01 ` Per Bothner
2002-08-09 18:25 ` David S. Miller
2002-08-13 0:50 ` Loren James Rittle
2002-08-13 21:46 ` Fergus Henderson
2002-08-13 22:40 ` David S. Miller
2002-08-13 23:44 ` Fergus Henderson
2002-08-14 7:58 ` Jeff Sturm
2002-08-14 9:52 ` Richard Henderson
2002-08-14 10:00 ` David Edelsohn
2002-08-14 12:01 ` Andreas Schwab
2002-08-14 12:07 ` David Edelsohn
2002-08-14 13:20 ` Jamie Lokier
2002-08-14 16:01 ` Nix
2002-08-14 13:20 ` Michael Matz
2002-08-14 16:31 ` Faster compilation speed [zone allocation] Per Bothner
2002-08-15 11:34 ` Aldy Hernandez
2002-08-15 11:39 ` David Edelsohn
2002-08-15 12:01 ` Lynn Winebarger
2002-08-15 12:11 ` David Edelsohn
2002-08-15 11:41 ` Michael Matz
2002-08-16 8:44 ` Kai Henningsen
2002-08-15 11:43 ` Per Bothner
2002-08-15 11:57 ` Kevin Handy
2002-08-14 10:15 ` Faster compilation speed David Edelsohn
2002-08-14 16:35 ` Richard Henderson
2002-08-14 17:02 ` David Edelsohn
2002-08-20 4:15 ` Richard Earnshaw
2002-08-20 5:38 ` Jeff Sturm
2002-08-20 5:53 ` Richard Earnshaw
2002-08-20 13:42 ` Jeff Sturm
2002-08-22 1:55 ` Richard Earnshaw
2002-08-22 2:03 ` David S. Miller
2002-08-23 15:39 ` Jeff Sturm
2002-08-20 8:00 ` David Edelsohn
2002-08-14 7:36 ` Jeff Sturm
2002-08-10 10:02 ` Neil Booth
2002-08-09 17:36 ` Daniel Berlin
2002-08-12 16:23 ` Mike Stump
2002-08-12 16:05 ` Mike Stump
2002-08-09 19:07 ` David Edelsohn
2002-08-09 14:29 ` Neil Booth
2002-08-09 15:02 ` Nathan Sidwell
2002-08-09 17:05 ` Stan Shebs
2002-08-10 2:21 ` Gabriel Dos Reis
2002-08-12 12:11 ` Mike Stump
2002-08-12 12:41 ` David Edelsohn
2002-08-12 12:47 ` Matt Austern
2002-08-12 12:56 ` David S. Miller
2002-08-12 13:56 ` Matt Austern
2002-08-12 14:27 ` Daniel Berlin
2002-08-12 15:26 ` David Edelsohn
2002-08-13 10:49 ` David Edelsohn
2002-08-13 10:52 ` David S. Miller
2002-08-13 14:03 ` David Edelsohn [this message]
2002-08-13 14:46 ` Geoff Keating
2002-08-13 15:10 ` David Edelsohn
2002-08-13 15:26 ` Neil Booth
2002-08-14 9:25 ` Kevin Handy
2002-08-18 12:58 ` Jeff Sturm
2002-08-19 12:55 ` Mike Stump
2002-08-20 11:22 ` Will Cohen
2002-08-13 15:32 ` Daniel Berlin
2002-08-13 15:58 ` David Edelsohn
2002-08-13 16:49 ` David S. Miller
2002-08-12 14:59 ` David S. Miller
2002-08-12 16:00 ` Geoff Keating
2002-08-13 2:58 ` Nick Ing-Simmons
2002-08-13 10:47 ` Richard Henderson
2002-08-12 14:28 ` Stan Shebs
2002-08-12 15:05 ` David S. Miller
2002-08-12 19:17 ` Mike Stump
2002-08-12 23:28 ` Neil Booth
2002-08-09 14:51 ` Stan Shebs
2002-08-09 15:03 ` David Edelsohn
2002-08-09 15:43 ` Stan Shebs
2002-08-09 16:43 ` Alan Lehotsky
2002-08-09 16:49 ` Matt Austern
2002-08-10 2:24 ` Gabriel Dos Reis
2002-08-09 15:26 ` Geoff Keating
2002-08-09 16:06 ` Stan Shebs
2002-08-09 16:14 ` Terry Flannery
2002-08-09 16:29 ` Neil Booth
2002-08-09 16:29 ` Phil Edwards
2002-08-12 16:24 ` Mike Stump
2002-08-12 18:38 ` Phil Edwards
2002-08-13 5:27 ` Theodore Papadopoulo
2002-08-13 10:03 ` Mike Stump
2002-08-12 15:55 ` Mike Stump
2002-08-09 14:59 ` Timothy J. Wood
2002-08-16 13:31 ` Problem with PFE approach [Was: Faster compilation speed] Timothy J. Wood
2002-08-16 13:44 ` Devang Patel
2002-08-16 14:31 ` Timothy J. Wood
2002-08-16 14:39 ` Neil Booth
2002-08-16 14:46 ` Devang Patel
2002-08-16 13:54 ` Devang Patel
2002-08-16 14:42 ` Neil Booth
2002-08-16 14:57 ` Devang Patel
2002-08-17 15:31 ` Timothy J. Wood
2002-08-17 20:04 ` Daniel Berlin
2002-08-17 20:07 ` Andrew Pinski
2002-08-17 20:14 ` Timothy J. Wood
2002-08-17 20:21 ` Daniel Berlin
2002-08-18 3:17 ` Kai Henningsen
2002-08-18 7:36 ` Daniel Berlin
2002-08-18 11:20 ` jepler
2002-08-18 13:20 ` Daniel Berlin
2002-08-18 14:31 ` Timothy J. Wood
2002-08-18 14:35 ` Andrew Pinski
2002-08-18 14:55 ` Timothy J. Wood
2002-08-19 2:41 ` Michael Matz
2002-08-19 6:26 ` jepler
2002-08-19 6:40 ` Daniel Berlin
2002-08-19 11:50 ` Devang Patel
2002-08-19 12:55 ` Jeff Epler
2002-08-19 13:03 ` Ziemowit Laski
2002-08-19 11:53 ` Devang Patel
2002-08-19 11:59 ` Devang Patel
2002-08-17 20:15 ` Daniel Berlin
2002-08-19 7:07 ` Stan Shebs
2002-08-19 8:52 ` Timothy J. Wood
2002-08-16 14:45 ` Timothy J. Wood
2002-08-09 16:01 ` Faster compilation speed Richard Henderson
2002-08-10 17:48 ` Aaron Lehmann
2002-08-12 10:36 ` Dale Johannesen
2002-08-09 19:45 Robert Dewar
2002-08-09 20:24 ` Daniel Berlin
2002-08-10 4:35 Robert Dewar
2002-08-10 9:45 ` Linus Torvalds
2002-08-10 10:24 ` David Edelsohn
2002-08-10 4:38 Robert Dewar
2002-08-10 9:47 ` Linus Torvalds
2002-08-10 9:52 Richard Kenner
2002-08-10 10:41 ` Linus Torvalds
2002-08-10 10:43 Robert Dewar
2002-08-10 11:02 ` Linus Torvalds
2002-08-10 10:45 Robert Dewar
2002-08-10 13:26 ` Gianni Mariani
2002-08-10 10:47 Richard Kenner
2002-08-10 11:17 ` Linus Torvalds
2002-08-12 23:33 ` Kai Henningsen
2002-08-10 10:52 Richard Kenner
2002-08-10 10:55 Robert Dewar
2002-08-10 10:56 Robert Dewar
2002-08-10 11:51 Robert Dewar
2002-08-10 13:47 Robert Dewar
2002-08-12 14:10 Morten Welinder
2002-08-12 15:01 ` David S. Miller
2002-08-12 15:21 Robert Dewar
2002-08-12 15:25 ` David S. Miller
2002-08-13 13:46 ` Kai Henningsen
2002-08-12 23:39 Tim Josling
2002-08-13 8:07 Robert Dewar
2002-08-13 8:40 ` Daniel Jacobowitz
2002-08-13 9:10 Robert Dewar
2002-08-13 10:20 ` Theodore Papadopoulo
2002-08-13 21:44 ` Fergus Henderson
2002-08-14 4:00 ` Noel Yap
2002-08-14 4:36 ` Michael Matz
2002-08-14 4:45 ` Noel Yap
2002-08-14 10:06 ` Janis Johnson
2002-08-19 4:58 ` Nick Ing-Simmons
2002-08-13 10:50 ` Matt Austern
2002-08-13 11:53 ` Stan Shebs
2002-08-13 14:53 ` Joe Buck
2002-08-13 10:08 Robert Dewar
2002-08-13 10:36 Robert Dewar
2002-08-13 13:46 ` Kai Henningsen
2002-08-13 16:53 ` Joe Buck
2002-08-13 17:24 ` Paul Koning
2002-08-13 12:02 Robert Dewar
2002-08-13 12:32 ` Robert Lipe
2002-08-13 12:45 ` Gabriel Dos Reis
2002-08-14 2:55 ` Daniel Egger
2002-08-13 12:49 Robert Dewar
2002-08-14 10:17 ` Dale Johannesen
2002-08-14 10:56 ` David S. Miller
2002-08-14 11:04 ` Dale Johannesen
2002-08-14 11:08 ` David S. Miller
2002-08-19 5:15 ` Nick Ing-Simmons
2002-08-19 7:06 ` David S. Miller
2002-08-19 10:29 ` Richard Henderson
2002-08-19 11:33 ` David S. Miller
2002-08-19 9:20 ` Daniel Egger
2002-08-14 11:27 ` Timothy J. Wood
2002-08-14 11:42 ` David S. Miller
2002-08-14 13:13 ` Jamie Lokier
2002-08-19 5:20 ` Nick Ing-Simmons
2002-08-14 13:16 ` Jamie Lokier
2002-08-14 13:29 ` Timothy J. Wood
2002-08-14 13:35 ` Jamie Lokier
2002-08-14 13:43 ` Tim Hollebeek
2002-08-14 13:57 ` Jamie Lokier
2002-08-13 15:00 Tim Josling
2002-08-13 15:48 ` Russ Allbery
2002-08-14 19:11 Tim Josling
[not found] <1029475232.9572.ezmlm@gcc.gnu.org>
2002-08-16 1:28 ` Mat Hounsell
2002-08-16 5:08 Joe Wilson
2002-08-16 5:51 ` Noel Yap
2002-08-16 11:04 ` Mike Stump
[not found] <1029519609.8400.ezmlm@gcc.gnu.org>
2002-08-17 22:23 ` Mat Hounsell
2002-08-18 6:27 ` Michael S. Zick
2002-08-20 14:11 Tim Josling
2002-08-20 14:13 ` David S. Miller
2002-08-20 14:43 ` Stan Shebs
2002-08-21 6:59 Richard Kenner
2002-08-21 15:04 ` David S. Miller
2002-08-21 15:35 Tim Josling
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