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Re: [lno] [RFC] if-conversion and auto vectorizer

From: "Joseph S. Myers" <jsm at polyomino dot org dot uk>
To: Toon Moene <toon at moene dot indiv dot nluug dot nl>
Cc: Richard Henderson <rth at redhat dot com>, Robert Dewar <dewar at gnat dot com>, alexr at spies dot com, gcc at gcc dot gnu dot org
Date: Tue, 16 Mar 2004 23:10:27 +0000 (UTC)
Subject: Re: [lno] [RFC] if-conversion and auto vectorizer
References: <20040316122702.393DEF2DC2@nile.gnat.com> <20040316183250.GA12315@redhat.com><405785FF.8040009@moene.indiv.nluug.nl>

On Tue, 16 Mar 2004, Toon Moene wrote:

> Can I have an option (to be set by default to "yes" by the various 
> Fortran front ends) that says:
> 
> No valid (Fortran) program can cause the generation of floating point 
> exceptions or memory access violations ?

We have -fno-math-errno, -funsafe-math-optimizations, -ffinite-math-only,
-fno-trapping-math, -frounding-math, -fsignaling-nans (the defaults in all
cases being the opposites of these options).  I see no reason why Fortran
shouldn't change the defaults of some of these flags to values more
appropriate for Fortran (documenting this appropriately).

-- 
Joseph S. Myers
jsm@polyomino.org.uk

Follow-Ups:
- Re: [lno] [RFC] if-conversion and auto vectorizer
  - From: Toon Moene

References:
- Re: [lno] [RFC] if-conversion and auto vectorizer
  - From: Robert Dewar
- Re: [lno] [RFC] if-conversion and auto vectorizer
  - From: Richard Henderson
- Re: [lno] [RFC] if-conversion and auto vectorizer
  - From: Toon Moene

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