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From: Chris Lattner <clattner@apple.com>
To: dberlin@dberlin.org
Cc: giovannibajo@libero.it, mark@codesourcery.com,
	GCC Development <gcc@gcc.gnu.org>
Subject: Re: Link-time optimzation
Date: Thu, 17 Nov 2005 00:52:00 -0000	[thread overview]
Message-ID: <6BF10211-4A56-46B3-8771-D691217961D7@apple.com> (raw)

Daniel Berlin Wrote:

 > > It [LLVM] is proven to be stable, high-level enough to
 > > perform any kind of needed optimization,

 > This is not true, unfortunately. That's why it is called "low  
level virtual machine".
 > It doesn't have things we'd like to do high level optimizations  
on, like
 > dynamic_cast removal, etc.

For the record, this isn't really true at all.  LLVM does already  
capture some high-level program properties, and is constantly being  
extended over time.  I will note that it would be far easier to  
extend LLVM with the functionality you desire than to reinvent a  
whole new way of doing things.

That said, wanting to stay as close as possible to gimple is a  
reasonable design point, and LLVM certainly isn't that.

-Chris

             reply	other threads:[~2005-11-17  0:52 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-11-17  0:52 Chris Lattner [this message]
  -- strict thread matches above, loose matches on Subject: below --
2005-11-16 22:26 Mark Mitchell
2005-11-16 22:41 ` Andrew Pinski
2005-11-16 22:58 ` Andrew Pinski
2005-11-17  0:02 ` Andrew Pinski
2005-11-17  0:25 ` Andrew Pinski
2005-11-17  0:52   ` Tom Tromey
2005-11-17  0:26 ` Giovanni Bajo
2005-11-17  0:32   ` Daniel Berlin
2005-11-17  9:04     ` Giovanni Bajo
2005-11-17 16:25       ` Kenneth Zadeck
2005-11-17  1:20 ` Richard Henderson
2005-11-17  1:28   ` Mark Mitchell
2005-11-17  1:31     ` Daniel Jacobowitz
2005-11-17  3:35     ` Jeffrey A Law
2005-11-17 14:09       ` Daniel Berlin
2005-11-17 14:48         ` mathieu lacage
2005-11-17 11:41     ` Richard Earnshaw
2005-11-17 21:40       ` Ian Lance Taylor
2005-11-17 23:10         ` Robert Dewar
2005-11-17 23:42           ` Ian Lance Taylor
2005-11-18  2:13             ` Daniel Jacobowitz
2005-11-18  9:29               ` Bernd Schmidt
2005-11-18 11:19                 ` Robert Dewar
2005-11-18 11:29                 ` Richard Earnshaw
2005-11-18 18:35               ` Mike Stump
2005-11-18  2:33           ` Dale Johannesen
2005-11-18  3:11             ` Geert Bosch
2005-11-18 18:43             ` Mike Stump
2005-11-18 18:30           ` Mike Stump
2005-11-17 15:54   ` Kenneth Zadeck
2005-11-17 16:41     ` Jan Hubicka
2005-11-18 16:31     ` Michael Matz
2005-11-18 17:04       ` Steven Bosscher
2005-11-18 17:29         ` Michael Matz
2005-11-18 17:24     ` Nathan Sidwell
2005-11-17  1:43 ` Gabriel Dos Reis
2005-11-17  1:53 ` Andrew Pinski
2005-11-17  2:39 ` Kean Johnston
2005-11-17  5:53 ` Ian Lance Taylor
2005-11-17 13:08   ` Ulrich Weigand
2005-11-17 21:42     ` Ian Lance Taylor
2005-11-17 16:17   ` Kenneth Zadeck

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