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Re: PR21982

From: Diego Novillo <dnovillo at redhat dot com>
To: Andrew Pinski <pinskia at physics dot uc dot edu>
Cc: "Joseph S. Myers" <joseph at codesourcery dot com>, gcc-patches at gcc dot gnu dot org, "Kaveh R. Ghazi" <ghazi at caip dot rutgers dot edu>
Date: Thu, 9 Jun 2005 16:18:49 -0400
Subject: Re: PR21982
References: <20050609195332.GA20693@topo.toronto.redhat.com> <Pine.LNX.4.61.0506091958140.1367@digraph.polyomino.org.uk> <f790f76636d08b256485f3184bc07ac1@physics.uc.edu>

On Thu, Jun 09, 2005 at 04:11:26PM -0400, Andrew Pinski wrote:

> And the return value of printf is ignored too, which most people forget 
> about.
> 
Yes, but that's not important.  We only merge built-ins that
discard their return value.

So far, the only real issues seem to be with printf.
merge_builtins will need to analyze the format strings and
arguments.

We may also need to block merging if we find a statement writing
into global storage, but that seems too conservative.

Diego.

References:
- PR21982
  - From: Diego Novillo
- Re: PR21982
  - From: Joseph S. Myers
- Re: PR21982
  - From: Andrew Pinski

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