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Re: basic_block index negative?

To: Diego Novillo <dnovillo at redhat dot com>
Subject: Re: basic_block index negative?
From: Daniel Egger <degger at fhm dot edu>
Date: 17 Oct 2001 17:37:33 +0200
Cc: GCC Mailinglist <gcc at gcc dot gnu dot org>
References: <1003321482.21926.4.camel@sonja> <20011017111155.E15568@tornado.cygnus.com>

Am Mit, 2001-10-17 um 17.11 schrieb 1003331515:

> ENTRY_BLOCK_PTR and EXIT_BLOCK_PTR have negative index numbers
> (-1 and -2 respectively).

Thanks. Is there a special reason why those blocks have negative
indices?
 
> It's also important to keep the index as a signed int to allow
> reverse traversals of the bb array.

Sorry, I can't follow you here...

-- 
Servus,
       Daniel

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