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Re: Speculative prefetching: report

From: Zdenek Dvorak <rakdver at atrey dot karlin dot mff dot cuni dot cz>
To: Jan Hubicka <hubicka at ucw dot cz>
Cc: Dale Johannesen <dalej at apple dot com>,"gcc at gcc dot gnu dot org List" <gcc at gcc dot gnu dot org>
Date: Fri, 15 Oct 2004 23:30:06 +0200
Subject: Re: Speculative prefetching: report
References: <4C13D718-1C83-11D9-BA32-000A95D7CD40@apple.com> <20041015201924.GA9490@atrey.karlin.mff.cuni.cz> <4AB8AEE8-1EEA-11D9-BA32-000A95D7CD40@apple.com> <20041015205601.GA13379@atrey.karlin.mff.cuni.cz> <BCDD9B82-1EED-11D9-BA32-000A95D7CD40@apple.com> <20041015212509.GC14689@atrey.karlin.mff.cuni.cz>

Hello,

> Before pushing it to mainline I would like see the
> quadratic bottlenect of bsi_for_stmt resolved.  I don't know where the
> discussion surrounding Zdenek's patch went but I guess without that we
> can fix it by keeping around BSIs instead of direct statement pointers
> in the interface that is straightforward change.

this does not work (or at least it is likely to cause problems), since
BSI's may get invalidated when basic blocks are split.

Zdenek

References:
- Speculative prefetching: report
  - From: Dale Johannesen
- Re: Speculative prefetching: report
  - From: Zdenek Dvorak
- Re: Speculative prefetching: report
  - From: Dale Johannesen
- Re: Speculative prefetching: report
  - From: Zdenek Dvorak
- Re: Speculative prefetching: report
  - From: Dale Johannesen
- Re: Speculative prefetching: report
  - From: Jan Hubicka

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